KX Riders

Maintenance & Technical => KX500 Original => Topic started by: Abbott on March 10, 2016, 02:23:14 AM

Title: 1985 KX500 questions
Post by: Abbott on March 10, 2016, 02:23:14 AM
Hey everyone. I just picked up an '85 KX500 from a friend who just dumped a ton of money into this thing. He recoated the cylinder, replaced the pistons and rings, new crank main bearings and seals, transmission gears, transmission forks and so on. he got it all back together and the bike would fire up no problem but the bike will not shift. Thinking he got the transmission forks in the wrong grooves or something. I won't know until I get here and am not too concerned with that.

I am going to purchase a manual soon for this but in the meanwhile, I wanted to pick some brains. Do the case halves and engine covers have their own gaskets (and where can I find these?) or does everyone use gasket maker to seal up the lower end of the motor?
Title: Re: 1985 KX500 questions
Post by: sandblaster on March 10, 2016, 05:24:22 PM
Never done a 85, only back to 86.
I did find a gasket kit..

http://www.ebay.com/itm/Winderosa-808473-Complete-Gasket-Set-Kawasaki-Dirtbike-For-Kx500-1985-/361412154250?hash=item5425d7d38a:g:2woAAOSwl9BWJSI0&vxp=mtr (http://www.ebay.com/itm/Winderosa-808473-Complete-Gasket-Set-Kawasaki-Dirtbike-For-Kx500-1985-/361412154250?hash=item5425d7d38a:g:2woAAOSwl9BWJSI0&vxp=mtr)
Title: Re: 1985 KX500 questions
Post by: Abbott on March 10, 2016, 11:14:16 PM
thanks for the reply. i'll probably end up ordering a kit. it looks like the guy who was in there before me used some kind of gasket maker. I wasn't sure if the gaskets provided required "shimming" for the motor when being re-assembled.
Title: Re: 1985 KX500 questions
Post by: sandblaster on March 11, 2016, 02:07:23 AM
Ok, I went to partzilla to look at a exploded diagram of your cases.
There is no main case gasket which is consistent with the 86-04 engines.
You will need a case sealant like Yamabond or similar.

http://www.partzilla.com/parts/search/Kawasaki/Motorcycle/1985/KX500-B1+KX500/CRANKCASE/parts.html (http://www.partzilla.com/parts/search/Kawasaki/Motorcycle/1985/KX500-B1+KX500/CRANKCASE/parts.html)

Before you do any assembly, wait for your service manual...

For a nice starter I have condensed a build on this site down to it's most informative parts here:

http://www.oem-cycle.com/forum/viewtopic.php?f=41&t=824 (http://www.oem-cycle.com/forum/viewtopic.php?f=41&t=824)

Basically I removed a lot of the banter (Which is fun reading) And kept just the info..

Same thing here;

http://www.oem-cycle.com/forum/viewtopic.php?f=41&t=878 (http://www.oem-cycle.com/forum/viewtopic.php?f=41&t=878)

Post pics when you can
Title: Re: 1985 KX500 questions
Post by: Abbott on March 11, 2016, 05:37:43 AM
Thanks Sandman. really valuable information there! i'll post pictures when I can. looks like I cannot upload them directly here? I'm guessing I have to use photo bucket or some sort of image uploading site.
Title: Re: 1985 KX500 questions
Post by: umberto on March 11, 2016, 06:58:18 AM
Here's a handy guide on how to post pictures. 

http://www.kxriders.com/forums/index.php/topic,10040.0.html (http://www.kxriders.com/forums/index.php/topic,10040.0.html)
Title: Re: 1985 KX500 questions
Post by: Abbott on March 13, 2016, 01:27:13 PM
(http://i98.photobucket.com/albums/l271/dakota318st/Mobile%20Uploads/20160307_194015.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/Mobile%20Uploads/20160307_194015.jpg.html)

Title: Re: 1985 KX500 questions
Post by: Abbott on March 13, 2016, 01:27:45 PM
(http://i98.photobucket.com/albums/l271/dakota318st/Mobile%20Uploads/20160307_194006.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/Mobile%20Uploads/20160307_194006.jpg.html)
Title: Re: 1985 KX500 questions
Post by: Abbott on March 13, 2016, 01:28:37 PM
(http://i98.photobucket.com/albums/l271/dakota318st/Mobile%20Uploads/20160307_193853.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/Mobile%20Uploads/20160307_193853.jpg.html)
Title: Re: 1985 KX500 questions
Post by: sandblaster on March 13, 2016, 02:31:12 PM
Lookin sweet... I'd ride it  8-)
Title: Re: 1985 KX500 questions
Post by: Foxx4Beaver on March 13, 2016, 08:42:04 PM
that pipe's lookin legit. :mrgreen:
Title: Re: 1985 KX500 questions
Post by: Abbott on March 13, 2016, 11:48:41 PM
Thanks for the comments guys. Looking forward to hearing it run with that exhaust combination. That pipe has very minor dings on the bottom of it and is in overall good shape. It'll clean up real nice with some Mothers and aluminum foil

Started diving into the motor a bit this weekend. Took off the right side engine cover and removed the clutch to get at the kick start assembly was that sheared. was able to get a replacement off ebay for a good price.

the engine cover took quite a hit. broke off the boss that the kick start shaft rides in. I brought it into work with me today to try and glue the pieces back together so I can get a couple measurements. Going to mill a diameter into the cover where it broke and machine a new slug with clearance hole to be welded in. hopefully i'll be able to make it stronger that stock. i'll post pics when I can later
Title: Re: 1985 KX500 questions
Post by: Foxx4Beaver on March 14, 2016, 06:19:53 AM
sounds good....keep the progress pics comin!
Title: Re: 1985 KX500 questions
Post by: Speedway73 on March 14, 2016, 07:36:00 PM
I've got a hand coned pipe for an '85 if you're interested. Been hanging from the rafters for YEARS. Not sure on manufacturer but it's solid non-the-less. Clean it up and give it a fresh coat of chrome or Hi-Temp...

Can post pics if you're interested.
Title: Re: 1985 KX500 questions
Post by: Abbott on March 14, 2016, 11:54:05 PM
PM sent.

complete gasket kit is on its way, along with a new kick start shaft seal since that break ruined the other one.

How important are these resonator boxes? found that the one on this bike is all cracked. previous owner stuffed the cracks with gasket maker. I plan on mixing some MEK with black ABS plastic for some plastic welding. I've done it in the past and had good results.
Title: Re: 1985 KX500 questions
Post by: sandblaster on March 15, 2016, 02:26:57 AM
Post a pic of your resonator box.
Title: Re: 1985 KX500 questions
Post by: Abbott on March 15, 2016, 11:35:28 PM
The cracked box

(http://i98.photobucket.com/albums/l271/dakota318st/20160315_185436.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160315_185436.jpg.html)

Was able to get a lot done yesterday...
-made the new sleeve from 6061 aluminum for the kick start assembly. I glued the broken pieces together to get a couple rough measurements. just need to machine the engine cover flat so I can have some guys at work weld it together. made a tool that will guide through the kick start shaft seal counter bore so I know the new sleeve will stay nice and straight.
(http://i98.photobucket.com/albums/l271/dakota318st/20160315_164316.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160315_164316.jpg.html)
(http://i98.photobucket.com/albums/l271/dakota318st/20160314_100716.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160314_100716.jpg.html)
(http://i98.photobucket.com/albums/l271/dakota318st/20160314_080955.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160314_080955.jpg.html)
Title: Re: 1985 KX500 questions
Post by: Abbott on March 15, 2016, 11:49:39 PM
Got the bike apart and motor out of the frame. A lot of work to do and not impressed at all with what the previous owner has done so far.

-tail section cross member needs to be re-welded
-exhaust mount broken (header), needs to be re-welded
-master link was on backwards and almost ground down to nothing
-completely missing the output shaft (front sprocket) retaining nut.
-one motor mount was stripped really bad (easy replacement)
-cylinder looks pretty beat up around the ports. it definitely needs to be stripped and replated
-none of the washers were beaten over against the nuts for any of the gears
-the clutch nut, primary gear nut and flywheel nut were hardly tight...clearly not to spec.
-the flywheel woodruff key was sheared
-piston is still in good shape...need to clean it up and file some rough edges but I can use it
-couple of transmission dogs look a little rounded to me (i'll get pictures up another time and get your opinions)
-still a lot to go through and inspect once I get the manual in. she's going to need some work!!

Oh, and the last picture I just thought was cool because the piston is bigger than my fist...and I don't have small hands LOL


(http://i98.photobucket.com/albums/l271/dakota318st/20160315_213104.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160315_213104.jpg.html)
(http://i98.photobucket.com/albums/l271/dakota318st/20160315_213513.jpg) (http://s98.photobucket.com/user/dakota318st/media/20160315_213513.jpg.html)
(http://i98.photobucket.com/albums/l271/dakota318st/20160315_201038.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160315_201038.jpg.html)
(http://i98.photobucket.com/albums/l271/dakota318st/20160315_201048.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160315_201048.jpg.html)
(http://i98.photobucket.com/albums/l271/dakota318st/20160315_204111.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160315_204111.jpg.html)
(http://i98.photobucket.com/albums/l271/dakota318st/20160315_211516.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160315_211516.jpg.html)

Title: Re: 1985 KX500 questions
Post by: tobys 2 strokes on March 16, 2016, 01:01:40 AM
I would dump the resonator they are fine with out it.
I think I have a good clutch cover for a 85 if your repair proves to be to much of a pain.
Title: Re: 1985 KX500 questions
Post by: Abbott on March 16, 2016, 02:15:44 AM
Hey Toby. Thank for letting me know! hoping to mill out the engine cover today and then take it to the welding department. If it doesn't work, i'll be sure to let you know.
Title: Re: 1985 KX500 questions
Post by: Abbott on March 16, 2016, 02:18:05 PM
On the mill this afternoon. Forgot to take an after picture. Will get one tomorrow

(http://i98.photobucket.com/albums/l271/dakota318st/20160316_160632.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160316_160632.jpg.html)
 
Center piece was broken. Couple tacks back on it. Polished the pipe up while I was at it.
(http://i98.photobucket.com/albums/l271/dakota318st/20160316_211304.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160316_211304.jpg.html)

Title: Re: 1985 KX500 questions
Post by: Abbott on March 20, 2016, 11:22:46 PM
Another shot of the polished "DG" pipe.
(http://i98.photobucket.com/albums/l271/dakota318st/20160316_211613_1.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160316_211613_1.jpg.html)

Finished maching. That little cavity will also be filled in.
(http://i98.photobucket.com/albums/l271/dakota318st/20160317_122603.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160317_122603.jpg.html)

New beefed up billet T6061 aluminum sleeve that has been TIG welded. This one shouldn't snap!
(http://i98.photobucket.com/albums/l271/dakota318st/20160321_071229.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160321_071229.jpg.html)
Title: Re: 1985 KX500 questions
Post by: Abbott on March 20, 2016, 11:25:13 PM
I need to send the cylinder out for a strip and re-plate...who do you guys recommend?
Title: Re: 1985 KX500 questions
Post by: Foxx4Beaver on March 21, 2016, 01:15:04 AM
I need to send the cylinder out for a strip and re-plate...who do you guys recommend?

PowerSeal or Millennium....

http://www.powersealusa.com/
http://mt-llc.com/

PowerSeal's in Pennsylvania, and Millennium's in Wisconsin...which ever you're closer to would be the one you want...they're both good.
Title: Re: 1985 KX500 questions
Post by: sandblaster on March 21, 2016, 03:41:02 AM
Nice job on the repair...
Title: Re: 1985 KX500 questions
Post by: Abbott on March 22, 2016, 02:07:08 PM
Well, I was prepping the cylinder to send out and managed to get every head stud off the cylinder except for the last one!! Ugh. So, does anyone have a head stud laying around? I am also looking for a washer and nut for the front sprocket.
Title: Re: 1985 KX500 questions
Post by: Foxx4Beaver on March 23, 2016, 08:30:59 AM
here's a list of some NOS items....not sure what you'll find, I didn't look through all of them...

http://www.ebay.com/sch/i.html?_from=R40&_trksid=p2057872.m570.l1313.TR0.TRC0.H0.X1985+kawasaki+kx500+nos.TRS0&_nkw=1985+kawasaki+kx500+nos&_sacat=0
Title: Re: 1985 KX500 questions
Post by: Abbott on March 23, 2016, 11:29:16 PM
Thanks Fox. unfortunately, couldn't find anything on ebay, bikebandit or partzilla. will have to keep searching....


Tried welding on a nut to the stud first and soaked the b@stard in kroil and applied heat...then broke the nut off the stud! ha! So, last night I was able to machine out the old stud and prepped it for an M10x1.25 helicoil. going to box it up tonight and send it to US Chrome for re-plate and piston skirt coating
Title: Re: 1985 KX500 questions
Post by: Foxx4Beaver on March 24, 2016, 11:30:54 AM
Thanks Fox. unfortunately, couldn't find anything on ebay, bikebandit or partzilla. will have to keep searching....

that sucks...if I see something, I'll let you know...unfortunately finding parts for the early ones are getting slimmer and slimmer.
Title: Re: 1985 KX500 questions
Post by: Abbott on March 24, 2016, 11:20:33 PM
Thanks Fox. unfortunately, couldn't find anything on ebay, bikebandit or partzilla. will have to keep searching....

that sucks...if I see something, I'll let you know...unfortunately finding parts for the early ones are getting slimmer and slimmer.

Searched for the actual Kawasaki part number for the studs and found a set of 3 on ebay for $16 shipped! also found the washer I need for the front sprocket using the same method. Still no sprocket nut so if anyone comes across one, please let me know!!
Title: Re: 1985 KX500 questions
Post by: tobys 2 strokes on March 25, 2016, 05:27:38 AM
I converted my 86 to take a snap ring like the later ones its easy and works good
Title: Re: 1985 KX500 questions
Post by: Abbott on March 25, 2016, 05:43:58 AM
I converted my 86 to take a snap ring like the later ones its easy and works good

I like where this is going! What did it take to convert it? I have the bottom end completely disassembled so now is the time for modifications. Did you have to replace the entire output shaft?
Title: Re: 1985 KX500 questions
Post by: tobys 2 strokes on March 25, 2016, 07:18:46 AM
It will be harder when disasembled. I did mine when it was together I installed  a old sprocket and carefully with a cut off wheel cut a grove up against the sprocket . The Oring behind the sprocket coller needs to have some pressure on it for it to not leak so get the grove as close to the sprocket as you can or you will have to shim up the space. Tecates are horrible for leaking at the counter shaft due to thinner after market sprockets I always fight to get them shimmed correctly  The nut on your 85 actually worked real good for keeping the leaks down if only they were available new.
Title: Re: 1985 KX500 questions
Post by: Abbott on March 25, 2016, 01:54:18 PM
Found that a 2003 CR85 steering stem nut is the same size thread as the front sprocket nut, got one for $10 shipped. M24x1.0. Honda pn 90304-425-000
Title: Re: 1985 KX500 questions
Post by: Abbott on March 28, 2016, 02:43:20 PM
Starting to clean/inspect the lower end. Ran across this monstrosity. The guy butchered the drain plug hole threads. Might have to weld up some material and machine a new hole and sealing surface.

(http://i98.photobucket.com/albums/l271/dakota318st/20160328_202633.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160328_202633.jpg.html)

Pic of the weld for the header
(http://i98.photobucket.com/albums/l271/dakota318st/20160328_182944.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160328_182944.jpg.html)
Title: Re: 1985 KX500 questions
Post by: Motorrad on March 28, 2016, 04:27:33 PM
Nice work so far.    I'm watching
Title: Re: 1985 KX500 questions
Post by: Abbott on March 29, 2016, 11:36:48 AM
Hey guys. Have the transmission apart now. Looking for some guidance to deem these gears okay to use or not. Some of the dogs are fairly rounded along with the mating grooves. I expect there to be some but Im not familiar with the service limit.

(http://i98.photobucket.com/albums/l271/dakota318st/20160329_185651.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160329_185651.jpg.html)

(http://i98.photobucket.com/albums/l271/dakota318st/20160329_185656.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160329_185656.jpg.html)

(http://i98.photobucket.com/albums/l271/dakota318st/20160329_185728.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160329_185728.jpg.html)

(http://i98.photobucket.com/albums/l271/dakota318st/20160329_185747.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160329_185747.jpg.html)

(http://i98.photobucket.com/albums/l271/dakota318st/20160329_190335.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160329_190335.jpg.html)

(http://i98.photobucket.com/albums/l271/dakota318st/20160329_191244.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160329_191244.jpg.html)

(http://i98.photobucket.com/albums/l271/dakota318st/20160329_191534.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160329_191534.jpg.html)
Title: Re: 1985 KX500 questions
Post by: Abbott on March 29, 2016, 11:40:03 AM
Brought the crank into work today and got it nice and true. First time doing it. Wasn't too bad really. It was running .007" wider 180° from the pin. Got the run out at .001" by the time I was done. It was a little over .004" before I started

(http://i98.photobucket.com/albums/l271/dakota318st/20160329_174227.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160329_174227.jpg.html)
Title: Re: 1985 KX500 questions
Post by: Abbott on March 30, 2016, 01:52:57 PM
Rear wheel for the supermono conversion. Plan on doing a full build over the winter..
(http://i98.photobucket.com/albums/l271/dakota318st/20160330_202436.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160330_202436.jpg.html)
Title: Re: 1985 KX500 questions
Post by: Foxx4Beaver on March 30, 2016, 08:33:09 PM
nice wheel. 8-)
Title: Re: 1985 KX500 questions
Post by: Abbott on March 31, 2016, 05:20:19 AM
Just got the oil drain hole finished up...much better!!

(http://i98.photobucket.com/albums/l271/dakota318st/20160331_130029.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160331_130029.jpg.html)
Title: Re: 1985 KX500 questions
Post by: sandblaster on March 31, 2016, 06:42:20 AM
Nice job!
Title: Re: 1985 KX500 questions
Post by: sandblaster on March 31, 2016, 06:42:57 AM
Just curious... How much does that rear wheel weigh?
Title: Re: 1985 KX500 questions
Post by: Foxx4Beaver on March 31, 2016, 07:08:15 AM
Just curious... How much does that rear wheel weigh?

why...your wallet gettin a little heavy? :lol:
Title: Re: 1985 KX500 questions
Post by: Abbott on March 31, 2016, 07:39:44 AM
Just curious... How much does that rear wheel weigh?

If i can find a scale, i'll let you know! we don't even have one in our house. i'm curious to see how much it weighs myself.
Title: Re: 1985 KX500 questions
Post by: sandblaster on March 31, 2016, 07:42:12 AM
Just curious... How much does that rear wheel weigh?

why...your wallet gettin a little heavy? :lol:

I wish....
No, I was just wondering if that sort of wheel is heavier or lighter then the KX wheel or SM wheel..
Title: Re: 1985 KX500 questions
Post by: Abbott on March 31, 2016, 08:13:39 AM
Just curious... How much does that rear wheel weigh?

why...your wallet gettin a little heavy? :lol:

I wish....
No, I was just wondering if that sort of wheel is heavier or lighter then the KX wheel or SM wheel..

What does the stock wheel and SM wheel weigh? im sure those spoke SM wheels are pretty light!
Title: Re: 1985 KX500 questions
Post by: Abbott on April 01, 2016, 01:29:13 PM
Welded the edges of the dogs and machined them in. Shaped the edges with a dremmel and followed the contour. They turned out much better than what they were

(http://i98.photobucket.com/albums/l271/dakota318st/20160401_131849.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160401_131849.jpg.html) :-D
Title: Re: 1985 KX500 questions
Post by: umberto on April 01, 2016, 03:07:48 PM
Nice looking work!
Title: Re: 1985 KX500 questions
Post by: sandblaster on April 01, 2016, 05:07:50 PM
Looks great... That is where I was thinking of going on gears that you can't get anymore.
It will be interesting to see what the longevity will be.
Title: Re: 1985 KX500 questions
Post by: Foxx4Beaver on April 01, 2016, 08:39:58 PM
my only concern is, aren't they hardened from the factory?...and was that taken into consideration when you welded them.?
other than that, that's great...much cheaper than buying a new set! 8-)
Title: Re: 1985 KX500 questions
Post by: sandblaster on April 02, 2016, 02:33:55 AM
I'm not sure but I believe you need to pre heat and then use something like a heat blanket to cool slowly.
I would also imagine that rod choice would be important.
I'll bet Larry knows.
Title: Re: 1985 KX500 questions
Post by: Abbott on April 02, 2016, 06:08:54 AM
my only concern is, aren't they hardened from the factory?...and was that taken into consideration when you welded them.?
other than that, that's great...much cheaper than buying a new set! 8-)

I was worried about the hardness as well. Whatever rod he used though is very hard. The mill was squawking when it hit that rod material. It never made a sound when it was was facing the gear material itself. I'm curious to see the longevity as well. Hopefully I won't find out too soon!! LOL
Title: Re: 1985 KX500 questions
Post by: Abbott on April 06, 2016, 12:26:47 PM
Question: How do you set timing for the '85? I have a Clymer manual that shows a 3 line adjustable style and 1 line fixed style. The plate on mine shows only 2 lines next to  the timing mark. Where should I be lining up?(http://i98.photobucket.com/albums/l271/dakota318st/20160406_193014.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160406_193014.jpg.html)(http://i98.photobucket.com/albums/l271/dakota318st/20160406_193023.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160406_193023.jpg.html)

Made a sleeve for my silencer core. The core was too gone to reweld further. Stuffed it with Bristol Core packing, nice stuff to work with.
(http://i98.photobucket.com/albums/l271/dakota318st/20160406_184650.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160406_184650.jpg.html)(http://i98.photobucket.com/albums/l271/dakota318st/20160406_184805.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160406_184805.jpg.html)(http://i98.photobucket.com/albums/l271/dakota318st/20160406_193350.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160406_193350.jpg.html)
Title: Re: 1985 KX500 questions
Post by: Abbott on April 07, 2016, 02:18:43 AM
Sandblaster: I did a Google search and found a link to one of your projects. your ignition is set up much different then mine. the coil and everything is mounted in a different spot and shows the 3 adjustable positions...

scroll down to the picture of the plate for your thread...

http://www.kxriders.com/forums/index.php?topic=10863.0
Title: Re: 1985 KX500 questions
Post by: sandblaster on April 07, 2016, 04:59:35 AM
Your right...
It's why I have not replied as I have not done a 85..
86 and up have 3 marks as shown in my pic.
That's easy... Middle mark...
Yours?
If I had to guess, just like you have it in the pic... Right in the middle... But it's only a guess...
Title: Re: 1985 KX500 questions
Post by: Abbott on April 07, 2016, 05:08:23 AM
Your right...
It's why I have not replied as I have not done a 85..
86 and up have 3 marks as shown in my pic.
That's easy... Middle mark...
Yours?
If I had to guess, just like you have it in the pic... Right in the middle... But it's only a guess...

Thanks for the reply sandblaster. I am going to try and center it, then and see what happens. I can't find anything else online on how to set it. really wish the manual covered it.
Title: Re: 1985 KX500 questions
Post by: Foxx4Beaver on April 07, 2016, 05:21:15 AM
have you tried calling a Kawie dealer and talking with one of the service techs?...you might not get an accurate answer, but it's worth a shot...even if you call a few different ones from different areas.
I've even e-mailed Kawie and Honda directly before in the past, to get answers that not even my local dealers could find.
Title: Re: 1985 KX500 questions
Post by: tobys 2 strokes on April 07, 2016, 08:59:38 AM
A more accurate way would be to put it in the middle which will make it run then put a timing light on it when its running and adjust it from there. nice thing about the smaller flywheels on the earlier models is you can adjust the stater timing with out removing the flywheel each time.
Title: Re: 1985 KX500 questions
Post by: Abbott on April 07, 2016, 12:15:56 PM
A more accurate way would be to put it in the middle which will make it run then put a timing light on it when its running and adjust it from there. nice thing about the smaller flywheels on the earlier models is you can adjust the stater timing with out removing the flywheel each time.

I wish that last part was true, but it is still not adjustable with the flywheel installed. Covers the entire plate behind it. Called the kawi dealer, he said to adjust it in the center like sandblaster said to do and go from there
Title: Re: 1985 KX500 questions
Post by: sandblaster on April 07, 2016, 04:31:50 PM
I wish I had a two stroke timing light  :-o
Title: Re: 1985 KX500 questions
Post by: tobys 2 strokes on April 08, 2016, 01:56:19 AM
both of my Mac lights have 2 stroke mode. you have to hook them up to a battery to work .

Did the 85s have a heavier flywheel? my 86 had the smaller lighter flywheel you can get to the stater bolts with it installed
Title: Re: 1985 KX500 questions
Post by: Abbott on April 08, 2016, 03:12:46 AM
i'll take a picture of the flywheel and ignition assembly and post it up later. it seems pretty large. i plan on using this bike for more high speed and RPMs...maybe some lightening is in order? thoughts?   :-D
Title: Re: 1985 KX500 questions
Post by: Abbott on April 19, 2016, 01:19:00 AM
man, for some reason or another I couldn't get on the forum for a couple weeks...I was starting to go thru withdrawl! LOL

not a whole lot has happened since last time. I just got my piston and cylinder back last night from US chrome. very pleased with their work! will certainly do business with them again. not only was the product good, but their customer service was always quick to get back to me. here are some shots of the piston with the low friction skirt coating and cylinder all taped up ready for paint.

(http://i98.photobucket.com/albums/l271/dakota318st/20160418_200024.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160418_200024.jpg.html)

(http://i98.photobucket.com/albums/l271/dakota318st/20160418_203802.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160418_203802.jpg.html)

clutch cover just needs a bit more detail work and then I can start re-installing the seals and water pump layshaft bearings
(http://i98.photobucket.com/albums/l271/dakota318st/20160418_211233.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160418_211233.jpg.html)
Title: Re: 1985 KX500 questions
Post by: sandblaster on April 19, 2016, 01:53:08 AM
Again, looks great..
There were many freaking out about the site...
I saw your question about the rear wheel weight.
I'll see if I can get that for you.
Title: Re: 1985 KX500 questions
Post by: motojason on April 19, 2016, 05:19:30 AM
man, for some reason or another I couldn't get on the forum for a couple weeks...I was starting to go thru withdrawl! LOL

not a whole lot has happened since last time. I just got my piston and cylinder back last night from US chrome. very pleased with their work! will certainly do business with them again. not only was the product good, but their customer service was always quick to get back to me. here are some shots of the piston with the low friction skirt coating and cylinder all taped up ready for paint.

(http://i98.photobucket.com/albums/l271/dakota318st/20160418_200024.jpg) (http://s98.photobucket.com/user/dakota318st/media/20160418_200024.jpg.html)


That looks like a later piston with a flat top. The 85 piston had a dome. What is the compression with the flat piston? Did you modify the head? 
Title: Re: 1985 KX500 questions
Post by: motojason on April 19, 2016, 05:24:50 AM
I built an 85 last year. nice bike.

http://www.kxriders.com/forums/index.php/topic,12749.msg114143.html#msg114143
Title: Re: 1985 KX500 questions
Post by: Abbott on April 19, 2016, 08:56:04 AM
man, for some reason or another I couldn't get on the forum for a couple weeks...I was starting to go thru withdrawl! LOL

not a whole lot has happened since last time. I just got my piston and cylinder back last night from US chrome. very pleased with their work! will certainly do business with them again. not only was the product good, but their customer service was always quick to get back to me. here are some shots of the piston with the low friction skirt coating and cylinder all taped up ready for paint.

(http://i98.photobucket.com/albums/l271/dakota318st/20160418_200024.jpg) (http://s98.photobucket.com/user/dakota318st/media/20160418_200024.jpg.html)


That looks like a later piston with a flat top. The 85 piston had a dome. What is the compression with the flat piston? Did you modify the head? 

although it looks very flat in the picture, it does have a slight "dome" to it. unsure of the compression yet. I will post the numbers once it is back in the bike and checked. knowing the work that has been done to the bike so far, I am sure the previous owner did not modify the head. that would be my luck
Title: Re: 1985 KX500 questions
Post by: motojason on April 19, 2016, 10:04:08 AM
It is definately a different or aftermarket piston. The OEM 83-85 KX500 pistons have only one ring. Probably a better seal with two rings, even if a little more friction.
Title: Re: 1985 KX500 questions
Post by: Abbott on April 19, 2016, 01:37:15 PM
I believe it is just a newer style 500 piston. Probably aftermarket as well. I saw in your 85 build thread that you went to the Unadilla rewind...where are you from? I live up in the fingerlakes area of NY.

finished painting the cylinder tonight

(http://i98.photobucket.com/albums/l271/dakota318st/20160419_203754.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160419_203754.jpg.html)
Title: Re: 1985 KX500 questions
Post by: Abbott on April 24, 2016, 11:48:40 PM
head has been painted to match the cylinder. just need to get myself an M10x1.25 helicoil and tap for one of the cylinder head studs and I can start re-assembling the top end.

(http://i98.photobucket.com/albums/l271/dakota318st/20160424_184816_1.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160424_184816_1.jpg.html)
Title: Re: 1985 KX500 questions
Post by: motojason on April 25, 2016, 02:51:59 AM
I believe it is just a newer style 500 piston. Probably aftermarket as well. I saw in your 85 build thread that you went to the Unadilla rewind...where are you from? I live up in the fingerlakes area of NY.

I am from NY originally, but I live in MI now. I still have family in the Downsville, NY area. I will be at the Rewind again this year. It is one of the best vintage race events of the season. Definately one to attend. Your bike is eligable for the promoter's Retro class, but not AHRMA (yet). Hopefully, the Ultima  rules will change for 2017 and allow the non-powervalve, front disk brake KXs.

Cylinder and head are looking good!

Consider the compression release mod for the head. It's a good idea, even if you can kick it over with out it. Having the release puts much less stress on the kick start mechanism.   
Title: Re: 1985 KX500 questions
Post by: Abbott on May 04, 2016, 02:01:52 PM
front wheel is here. helicoil tap is finally on its way so I can finish the motor.

still need to buy a scale so I can weigh these sandblaster. the front feels so light without the rotors

(http://i98.photobucket.com/albums/l271/dakota318st/20160504_203023.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160504_203023.jpg.html)
Title: Re: 1985 KX500 questions
Post by: Abbott on May 13, 2016, 12:14:53 PM
Finally found some time to get this motor back together. Spring time keeps me busy on the Ducati's. I work on them for a side gig.

(http://i98.photobucket.com/albums/l271/dakota318st/20160513_193014.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160513_193014.jpg.html)
(http://i98.photobucket.com/albums/l271/dakota318st/20160513_192955.jpg~original) (http://s98.photobucket.com/user/dakota318st/media/20160513_192955.jpg.html)
Title: Re: 1985 KX500 questions
Post by: Abbott on August 22, 2016, 02:58:54 PM
finally got it back together enough to fire it up. third kick!  been a busy summer. still lots of work to do.

what do you recommend for jets and carb baseline settings? want to make sure this isn't running lean...

http://s98.photobucket.com/user/dakota318st/media/XiaoYing_Video_1471918039026_1.mp4.html