.12 tz

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mtruex

Well-Known Member
Joined
Jun 3, 2007
Messages
884
for the guys who have shimmed up the liner on the os .12 tz. im pretty sure i know the answer to this but did you open up the exhaust port on the crankcase to match the sleeve after raising it ?
 
you know,.. I can't remember exactly. I don't have it anymore. Rod G. gave me the initial start point on what thickness to add.

For some reason .020 comes to mind. Remember, you have to take whatever you put under the sleeve off of the head button to get keep the compression where you want it.

That engine will run very well after you do this. Run 50%, I didn't have luck running higher,.. too tough to needle.

On mine it wasn't needed. The exhaust port in the case was already larger than the one in the sleeve.

if im not mistaken you did go up .030 right ? and thank you for the uick reply..
 
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