Maintenance & Technical > KX500 Original
...on my big green tractor (91 KX500 Build)
Motorrad:
Finetunesquish with the head... not the base gaskets..
get it all assembled with the port time you want...
Measure measure measure..
THEN
cut the head.
jgturbo:
Good call. I'll wait to modify the head until I have the engine together. I'm waiting on an angle attachment for my dremel so I can get in there and modify my intake ports. Then it will be time to send it off for plating.
Motorrad, did you have the plating company weld up the roof of your kips ports or did you do it yourself?
Motorrad:
--- Quote from: jgturbo on April 28, 2012, 01:54:00 PM ---Good call. I'll wait to modify the head until I have the engine together. I'm waiting on an angle attachment for my dremel so I can get in there and modify my intake ports. Then it will be time to send it off for plating.
Motorrad, did you have the plating company weld up the roof of your kips ports or did you do it yourself?
--- End quote ---
company..
jgturbo:
Well, it's been a while since I've posted in this thread. I spent the summer and fall dumping all my money into my wife's 69 VW Bug. That project is finished, so now back to the KX!
I've got the bottom end back together. Transmission from a '98 ish bike. New bearings throughout. Crank from an '04 rebuilt and balanced.
I just finished the porting today. I'll try to get some pics up soon.
New numbers are:
195 deg Ex and 130 deg In with .040" base gasket.
197 deg Ex and 133 deg In with a .055" base gasket.
Deck is zero with a .050" base gasket.
Planning on cutting the combustion chamber this week. Does anyone have a head cc recommendation? I was thinking 36cc, but haven't crunched the numbers yet.
Anyway, it's good to be back!
jgturbo:
I apologize that it's not as pretty as some people's builds (coughmotorradcough) but I think it will get the job done. It had a new piston in a worn cylinder when I bought it. I'm thinking of riding it for a day to test my porting before I get the cylinder re plated and toss a fresh piston in.
Bottom end together. There's a component here that's positioned differently than stock. Let's see who can catch what it is.
Intake goodness
Exhaust
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