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Join Date: Jun 2018
Location: Nm 87510
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Quote:
Originally Posted by Zuffenwerker View Post
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 .

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Last edited by icarp; 09-03-2023 at 01:51 PM..
Old 09-02-2023, 08:07 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #21 (permalink)
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Join Date: Feb 2006
Location: Scottsdale, AZ
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Quote:
Originally Posted by icarp View Post
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.

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78’ SC 911 Targa - 3.2SS, PMO 46, M&K 2/2 1 5/8” HEADERS, 123 DIST, PORTERFIELD R4-S PADS, KR75 CAMS, REBEL RACING BUSHINGS, KONI CLASSICS
Old 09-03-2023, 06:15 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #22 (permalink)
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