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Posted by: Shindog1961 Apr 13 2014, 07:53 PM

Put my first cylinder and piston on and the deck height looks really low. Measures out to .2mm. That's got to be too low! Right? Thoughts?

Posted by: Michael RD Apr 13 2014, 09:11 PM

Yes too low. General consensus is min. .035 to .040 (1mm). Thicker cyl. base shims required.

Posted by: malcolm2 Apr 14 2014, 06:59 AM

Seems to me your question should have included your compression ratio goal and actual with no shims vs a question about just the height. There is alot more to it than just the height. Use this link to get the CR result you want. You can work backwards to get the total thickness of shims and resulting height.

https://www.cbperformance.com/v/enginecalc.html

There are other calculators out there just google it.

Clark

Posted by: Vacca Rabite Apr 14 2014, 08:00 AM

Exactly.

What compression ratio are you targeting?

Posted by: Shindog1961 Apr 20 2014, 04:18 PM

Going for stock 8.2. Trying to keep the cost down, its mostly a learning experience. Domed pistons are above the cylinders with no shims, peripheral clearance .65 mm. Heads are stock heads, no machining just cleaned up new springs and valves.

Posted by: Woody Apr 20 2014, 04:38 PM

Domed pistons?

Posted by: rick 918-S Apr 20 2014, 06:37 PM

Are you building a 1.7? Domed? I have seen domed 1.7 pistons but not 2.0. Of course I can say I have not seen everything.

Posted by: wndsrfr Apr 20 2014, 06:39 PM

QUOTE(Shindog1961 @ Apr 13 2014, 05:53 PM)

Posted by: malcolm2 Apr 20 2014, 06:59 PM

QUOTE(wndsrfr @ Apr 20 2014, 07:39 PM)

Posted by: Shindog1961 Apr 21 2014, 12:29 PM

Thanks everyone for their input. Greg at Fat Performance got me set up with new shims for the proper height.

Posted by: 76-914 Apr 21 2014, 03:11 PM

Did you CC your heads, yet? It's simple and you'll need that info to go forth? I've got a home made set up I'll loan you for the cost of shipping if you need one.