Piston Dome Volume

[icarp]

Originally Posted by Zuffenwerker

I like it! Will try, have some to measure come Monday - some euro 95mm Mahles

Another point to this task , is that it is an exercise in understanding the components that make up the compression ratio.

There are often many ways to skin a cat , this is just one .

I think there is a missed point from Shane's description.

I also smear a very light coating of grease, with my finger , just above where the ring will seat. This ensures that the ring will have a build up of grease all around the bottom edge of the ring as the piston is pushed down , and satisfies all grease needs for a proper seal.

This kind of ratio check keeps you on your toes regarding all details ,
.1cc or even .01cc matters .

You really do have control as to how your engine turns out .

P.S. make sure your spark plug fills all the threads in the plug boss , round all sharp edges , weigh all the rotating masses , make sure the wrist pin lock is secure , piston to wall,
Check deck height - get 1mm for sure +.05 -.05mm

Just my thoughts
Well done Shane
this engine is going to rip........

Ian

P.S.
The new cam will be a KnightRace 75 , new valve springs and Ti retainers,
A little less lift , more duration, softer installed pressure as well as over the nose .

[snbush67]

Originally Posted by icarp

The new cam will be a KnightRace 75, new valve springs and Ti retainers, A little less lift , more duration, softer installed pressure as well as over the nose .

I’m a believer, I know this motor is gonna rip. I never imagined that the performance levels you have opened my mind to even existed. It’s great to know what excellence is, and what it takes to get there.