Rebuilding question part 2

[Power_Man]

Cylinders are off being re-plated.

 

Before i order new parts/gaskets i need to know how to attack this.

 

The previous work order states that it had a .012 cub gasket with a .047 squish.

 

Here are the details on it.

421 cub

24CC domes

wiesco 573M06800 pistons

39 PWK

shearer in-frames

 

i guess what i need to know is, is that squish good?

if i use a .012 gasket again will i get same squish.

 

i want to get most out of this engine on 94OCT Pump gas, while still being safe.

 

 

[possum]

If your builder used .012 and it ran good and you were happy with it. Yea just get a .012 to put back in.

[Power_Man]

If your builder used .012 and it ran good and you were happy with it. Yea just get a .012 to put back in.

If it ran good, i probably would not be rebuilding it. lol

 

I think it had detonation. The reason i think it had that is because the motor vibrated at certain RPM/loads and it backed out on a WOT plug chop and started to seize the left cylinder.

The timing was at +4 and i was running 94 octane fuel.

[possum]

Who built it? Why dont you ask him? I rebuild,and or inspect even when my bike runs great.

 

Could be lean for all we know causing the symptoms

Edited December 9, 2015 by possum