Subject	Also, it could be from the piston design. Ash did my motor
Posted by	racer2fst on November 11, 2006 at 9:53 PM
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In Reply To	why is built engine has lower compression??? posted by hawaii2z on November 11, 2006 at 09:26 PM
Message	install and even had a big say in the design of the Weisco pistons that are in the motor. When we checked my compression..(mine and The devils Z at the same time/same engine builder/pistons,etc) both of our engines were reading 122-127 for the compression test. I was under the impression that this was a piston design for "LOWER COMPRESSION" to run higher boost levels w/ the trade off being the off boost grunt compensated by the displacement. Nonetheless,I have'nt checked my compression lately and the motor was still pretty new at the time..(under 2K miles) but I would like to get a definite answer to what the compression should be on a built motor that was bored out to .040 over stock. That being said...I have no issues with my motor and it runs like a top from day to day....(excellent job Ash!) and it seems bulletproof...knock on wood... but getting back to the topic....what should my compression be??....lol Rob D.
Follow Ups	why is built engine has lower compression??? - hawaii2z 21:26:44 11/11/06 pending milage, the rings my not be fully seated yet. - SpecNATT (Houston) 21:34:12 11/11/06 Also, it could be from the piston design. Ash did my motor - racer2fst 21:53:39 11/11/06 122-127, seems kinda low, but then again i dunno much abuot - Eishozzzz 22:48:47 11/11/06 I had my engine done by SGP winter/spring 2004 - RHulme 22:53:59 11/11/06 my old SGP engine w/ wisecos did 150-160 psi after 12k mi (n/m) - SpecNATT (Houston) 23:31:02 11/11/06 do you have cams? you may have overlap!!! (n/m) - octavian-z 23:06:43 11/11/06 I have stock cams....one of the few things that was'nt - racer2fst 23:46:07 11/11/06 yea with my stock cams I'm in the 176-178psi range for my TT (n/m) - SkiFly01 01:57:10 11/12/06 Mine are JWT 400 cams and springs, (n/m) - RHulme 23:53:43 11/11/06 with cams you will see a little less compression... - octavian-z 00:33:10 11/12/06 I have never seen the test turned over @"full throttle" ... (n/m) - The Devils Z 06:32:33 11/12/06 susposed to do it with throttle open on all cars or on the - SpecNATT (Houston) 10:20:27 11/12/06 gotcha .. .balance tube is always off (n/m) - The Devils Z 17:50:42 11/12/06 Test was done with balance tube off, - RHulme 11:57:58 11/12/06 My original motor from SGP was consistently around - The Devils Z 06:31:08 11/12/06 also keep in mind... - tyler@boostpro.net 20:41:24 11/12/06
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