Maintenance & Technical > KX500 Original

Bad coil or cdi?

<< < (3/5) > >>

95formula847:
Ya I may send the motor to someone like Stewart and have it done for real. Bottom and top. Well see when its apart.

I rebuilt it myself.

Friar-Tuck:
95,
  Good call On the pressure/vac test.  Not unusual that several things slowly start affecting your performance.
    If you do decide to send off your engine to Stewart-San or one of the other builders here they may also check out your electrical system.  The re-builders have several of just about everything and will be able to troubleshoot what's going on by swapping out verified operating items quickly.   
  Just a thought.
  Tuck\o/
 

95formula847:
Well I may just replace the base gasket with a better one from Cometic. I had just the standard Cometic gasket on it but I am going to call them and ask about one i read about on here. A metal gasket surrounded by silicon or something like that.

Ill check the base of the jug and case surface for warped or uneven areas also. If it blows after that then ill have it checked for real. Id rather not put a lot of money in it right now if I don't have to.

95formula847:
I pulled the top end off. Im a dumb dumb. I put the base gasket on upside down and the cutout for the power valve rod was on the wrong side so it pushed up through the gasket and bent/tore it.

How far does the rod go in and out? The gasket only bent in a quarter inch so the rod wasnt moving any further than that. Do you think I was losing any power because of this?

I ordered a new gasket from Cometic. Its a steel coated in some type of rubber. Guy there says it should work great.

Goat:
It's possible that with the rod hitting the gasket the valves wouldn't open completely or at least create a little drag. You would only lose a little power on top end if it can't open all the way. Glad it's nothing major.

Don't feel bad everyone at some point puts a gasket on upside down. I sometimes forget the ring on the head gasket has a skinny side and a fat side and the fat side goes down. You just get excited and lose track of what you're doing. Just have to slow down and double check what you're doing sometimes.

The rod that opens and closes the valves only moves about half an inch.

If you could get a pic of the gasket when you get it that would be sweet. Also is it factory thickness or is it thicker/thinner? I've always used the fiber gaskets but the metal one has me interested.

Navigation

[0] Message Index

[#] Next page

[*] Previous page