Anyone else tried this ?

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BertR said:
It will run OK as a backup but surely not a powerhouse.. I may put some JB weld in the port to build up the low spot before I put it back on the old case.
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JB Weld will expand and contract at a different rate than aluminum. It probably will come loose eventually
 
zaleski281977 said:
Lol guess i wasted my money lol
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Not totally. Some of the other parts in the set are decent. The piston is actually pretty nice, and there,s nothing wrong with the cc. You can always try adding an extra gasket to raise the jug and decrease the gap. It will loose compression though but it will also advance your port timing a smidge. Would be intersting to try for kicks. Too bad about the defect cause that cylinder has got some huge ports. The first reply I got from Km dealer about it was he would pass it on to the mfg people. When I followed up he told me they have always been like that. Thats when i decided he wasn,t getting any more of my dough:mad:
 
What if you drop the crank size to a 28mm an use three bond as a cylinder gasket i know it drop the cc displacement down to a 28.5cc but it might rip who knows
 
zaleski281977 said:
The squish might not be where it needs to be though now i think about it
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ya that is the issue with both methods. You loose your squish and compression. Only testing would tell if that would be even worse than the original problem.The only real solution is a taller piston but sadly they only come with 9mm pins and thus create a lot of work to use one.
 
To add more to this i checjed the squish with out a gasket on the km cylinder to km crankcase i got a reading of .022 if you even dealt with the exhaust port issue using the supplied gasket in the kit it put u at .042 squish. Thats way over correct im suprised it even move out of its own way
 
zaleski281977 said:
So i emailed dan from km an hiscwords was it was a strange problem an that he would get with the manufactor
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Ha what a load of B.S. He already knows about it because I sent him pics of it months ago. First he said the same thing he told you, then when I followed up a couple weeks later he said it has always been that way and they still run fine The only thing he was willing to do was to sell me a piston to see if it fixed it. Thats why he no longer gets my business.
 
I'm experimenting with my head!! I put liquid steel in to fill the void for a base to see if it's worth using alumiweld as a final solution and re surface the port to what it needs to be. Ran it last night on the stand and seem to help tons... I'm going to drop it in one of the baja's tonight to get a better idea on power.
 
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