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03-09-2009
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#1 |
 
Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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Compression Test
Anyone have normal specs for LT-5 compression or tested their car?
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
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03-09-2009
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#2 | |
Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,169
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Re: Compression Test
Quote:
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1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978 |
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03-09-2009
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#3 |
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Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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Re: Compression Test
checking condition of the engine.
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
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03-09-2009
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#4 | |
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Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,169
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Re: Compression Test
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Ah, is there something that has you questioning it?
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1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Flowmaster Cats - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978 |
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03-09-2009
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#5 |
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Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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Re: Compression Test
Engine not at temp, will retest,
210 on left side 240 on right side went back after testing right side to validate # and restested left and got 210.
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
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03-09-2009
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#6 |
Join Date: Sep 2006
Location: lone pine and mammoth lakes
Posts: 1,407
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Re: Compression Test
dont know if altitude plays a part in testing compression. my black car tested at 175 -180 cold my altitude is 4000 ft . did they all test 210 on the left side / did you have the plenum and inj housings off? if not was the throttle held open all the way?i wonder if the cam s on tthat one side are timed different. dont know if that is possible ,just sharing thoughts .hope it helps
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03-10-2009
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#7 | |
 
Join Date: Aug 2006
Location: Edmonton, Alberta or Phoenix, Arizona
Posts: 2,741
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Re: Compression Test
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There are no limit's mans ingenuity, just as mans ingenuity will never conquer the forces & behavior of this planet...Smokey Y. |
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03-10-2009
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#8 |
 
Join Date: Dec 2003
Location: Chicagoland,IL
Posts: 2,679
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Re: Compression Test
Lee,i have done compression test with almost every cam timing i have tried.
It's been a while i can't rememmber. I have to find the paper work. If i find the paperwork i can almost tell you where your cams are timed at. Pete
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'91 #1635 PoloGreen 350 LT5 11.09 @ 129.27 11.04 @ 128.86 474RWHP 400RWTQ http://www.youtube.com/watch?v=SFNFOhGGlR4 http://www.youtube.com/watch?v=ZlRIOMwaDYY https://sites.google.com/site/peteszr1garage |
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03-10-2009
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#9 | |
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Join Date: Jul 2005
Location: Auburn, Washington
Posts: 586
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Re: Compression Test
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#1: 220 #2: 220 #3: 215 #4: 210 #5: 215 #6: 210 #7: 215 #8: 215 I'm not so sure the numbers themselves are that important. What is important, at least to my mind, is the consistency between the cylinders. But, Ryan, you would know more than I! 
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Nick ZR-1 Net Registry Founding Member #32 - lapsed... |
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03-10-2009
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#10 |
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Join Date: Dec 2003
Location: Chicagoland,IL
Posts: 2,679
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Re: Compression Test
I also remember 210's - 220.
Pete
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'91 #1635 PoloGreen 350 LT5 11.09 @ 129.27 11.04 @ 128.86 474RWHP 400RWTQ http://www.youtube.com/watch?v=SFNFOhGGlR4 http://www.youtube.com/watch?v=ZlRIOMwaDYY https://sites.google.com/site/peteszr1garage |
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