Maintenance & Technical > KX500 Steel Frame Conversion (SFC)
my 2001 KX 250/500 conversion
KXer:
Latest Update:
- Drilled out the engine to the 17mm (much harder than I thought, what is that a hardened steel sleeve?)
- Cut down the new swingarm and spacers
- built a new front engine mount, and fabricated a 1 piece head stay. (we had to build it out of thinner metal than I wanted, but we will see how long it lasts)
- With the use of a heat gun I was able to fit my desert tank (waiting on my shorty plugs to complete fitment)
- Made a exhaust "sleeve" so I can use all of the 250 silencers that I already have (spark arrestor, shorty, and some other one)
Tomorrow I will be putting the bike back together, still waiting on my pipe from service honda and a new spring from Fineline to complete the bike. I will take some pictures tomorrow as well.
doordie:
--- Quote from: KXer on December 27, 2008, 02:58:39 PM ---Latest Update:
- Drilled out the engine to the 17mm (much harder than I thought, what is that a hardened steel sleeve?)
- Cut down the new swingarm and spacers
- built a new front engine mount, and fabricated a 1 piece head stay. (we had to build it out of thinner metal than I wanted, but we will see how long it lasts)
- With the use of a heat gun I was able to fit my desert tank (waiting on my shorty plugs to complete fitment)
- Made a exhaust "sleeve" so I can use all of the 250 silencers that I already have (spark arrestor, shorty, and some other one)
Tomorrow I will be putting the bike back together, still waiting on my pipe from service honda and a new spring from Fineline to complete the bike. I will take some pictures tomorrow as well.
--- End quote ---
Be sure you got enough of ID(innerdia) for your silencer of a 250cc,easy to blow a hole in piston,better safe and sorry! :cry:
KXer:
Doordie,
It really makes that much of a difference? The 250 silencer ID is the same as the ID on the 500 pipe. But if it is that much of an issue I'll buy a new silencer for sure.
doordie:
--- Quote from: KXer on December 29, 2008, 01:44:35 AM ---Doordie,
It really makes that much of a difference? The 250 silencer ID is the same as the ID on the 500 pipe. But if it is that much of an issue I'll buy a new silencer for sure.
--- End quote ---
Is it same ID,no problem! 8-)
KXer:
So the SH pipe came in on Wednesday last week. As noted, to get it to fit I had to dent it in a bit around the water pump hose, and I cut off the rear of the pipe all together. and for mounting I used my KX250 head stay triangle plate and bolted it to the pipe and then hose clamped the mount to the frame (ran out of time, to get this pig to the desert, I will be welding it to the frame). Hope that makes sense.
Finally fired her up on Thursday, and she sounds healthy. Headed out to Glamis on Friday where apparantly I didn't dent the pipe enough around that hose, and it finally burnt a hole through it and I started dripping coolant. Headed back to camp where I pulled the pipe off, dented it some more, then used a 90 degree elbow piece of radiator hose and fit it back in to place (with the bend going towards the cylinder, not the pipe). Then I added high temp silicone, and wrapped it in tin foil. And finally, as I put the pipe back on I can see where I need to add a new rear mount.
Bike ran great after that until Sunday where I either blew the water pump seal or my base gasket as I have coolant in my transoil. So I will be tearing in to the engine in the next week or 2, but man is this bike fast now. Pulls like a freight train. I think I am going to go down a tooth in the front and run a 15/48 combo and see how she likes that.
Plans now for the bike are:
new chain and sprockets,
new carb spring (seemed too loose for me)
10 cup rear paddle
possibly a new piston and rings as I don't know how hard this engine was run before I bought it)
More loctite for ALL of the bolts hahaha
rear view mirror so I don't have to turn around to see my friends on 250 2T's and 450's haha (just kidding)
I have pics that I will try to upload later.
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