61x cylinder height???

[cookerq62]

I have a 61x cylinder that I am going to get bored and honed but it already has some machining work done to it. Basicaly a cleanup port and the base where it meets the case has been milled. What is the deck height supposed to be and what problems would I run into if its too low? thanx
Ryan

 

[Matt_E]

If it's too low, you may run into issues with your squish clearance, especially if using a shaved stock head.

 

[cookerq62]

I'm going to be running a protec limited head thats o-ringed. If my squish is too tight can I add another base gasket?

 

[Matt_E]

That would be the way to fix it, yes.

 

[waxhead]

measure the totlal height of the cylinder it should be 119.2 mil

 

[Jr.]

Don't double gaskets!!!!!!!!

the conversion of wax's metric is 4.693"

here is what you do. Using a regular base gasket, assmble the top end. rotate #1 to TDC. check if it's coming thru the top of the cyl. if not. bolt on the head. taking a piece of soft .075 solder. do a squish test. measure your clearance. I would expect it to be in the neigherhood of .045-.055"
with a pro-tec rec head. if it tighter. then you need to correct the situation with thick base gasket.
base gaskets are avail in .010, .020, .030, .040 & .060. Never double base gaskets. An air leak is a quick way to loose a motor.

need more help? Let me know

ski ya, Paul

 

[Matt_E]

Thanks Paul...a thicker base gasket, not double, is what I meant, of course.:biggrin:

 

[Jr.]

Thanks Paul...a thicker base gasket, not double, is what I meant, of course.:biggrin:

Yes, were on the same page :wink:

 

[waxhead]

thats right you guys still use that funny way of measuring
haha

 

[h2odesperado]

:haha: made my afternoon. not sure why:1244:

 

[cookerq62]

thanx the height of the cylinder is 118.3mm on my vernier calipers