# Informative compression test info from my own car.

**URL:** https://forums.speedlife.net/t/informative-compression-test-info-from-my-own-car/259128
**Category:** Shift518 Automotive
**Created:** [June 27, 2011, 4:50pm UTC](https://forums.speedlife.net/t/informative-compression-test-info-from-my-own-car/259128 "2011-06-27T16:50:00Z")
**Posts on this page:** 20
**Page:** 2

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### Author: ![6SPD\_S4](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/6spd_s4/32/6326_2.png) [@6SPD\_S4](https://forums.speedlife.net/u/6SPD_S4)
#### Post date: [June 27, 2011, 6:07pm UTC](https://forums.speedlife.net/t/informative-compression-test-info-from-my-own-car/259128/21 "2011-06-27T18:07:23Z")

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No exaggeration anywhere. Numbers are numbers breh. Do a leakdown and post results.

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### Author: ![88slowmarro](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/88slowmarro/32/6339_2.png) [@88slowmarro](https://forums.speedlife.net/u/88slowmarro)
#### Post date: [June 27, 2011, 6:07pm UTC](https://forums.speedlife.net/t/informative-compression-test-info-from-my-own-car/259128/22 "2011-06-27T18:07:42Z")

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no , they dont . so if comp is low and a cyl has a slight missfire at idle and throws a code for it . its not a problem ? i have seen it before and it does cause problems .

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### Author: ![LS\_WS.6](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ls_ws.6/32/6563_2.png) [@LS\_WS.6](https://forums.speedlife.net/u/LS_WS.6)
#### Post date: [June 27, 2011, 6:07pm UTC](https://forums.speedlife.net/t/informative-compression-test-info-from-my-own-car/259128/23 "2011-06-27T18:07:54Z")

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i did a compression test on my trans am yesterday, the outcome were both the same cold, and well, hot…:dunno

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### Author: ![88slowmarro](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/88slowmarro/32/6339_2.png) [@88slowmarro](https://forums.speedlife.net/u/88slowmarro)
#### Post date: [June 27, 2011, 6:10pm UTC](https://forums.speedlife.net/t/informative-compression-test-info-from-my-own-car/259128/24 "2011-06-27T18:10:00Z")

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that thing hasnt seen running temps in yrs …

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### Author: ![SSmokinn\_SS](https://avatars.discourse-cdn.com/v4/letter/s/ec9cab/32.png) [@SSmokinn\_SS](https://forums.speedlife.net/u/SSmokinn_SS)
#### Post date: [June 27, 2011, 6:11pm UTC](https://forums.speedlife.net/t/informative-compression-test-info-from-my-own-car/259128/25 "2011-06-27T18:11:04Z")

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> [@FS: desk top pc complete $250 with dvd burner](https://forums.speedlife.net/t/fs-desk-top-pc-complete-250-with-dvd-burner/43277/9):
>
> no , they dont . so if comp is low and a cyl has a slight missfire at idle and throws a code for it . its not a problem ? i have seen it before and it does cause problems .

my SS with the original motor did that. Idled normal and drove fine but on slight acceleration it would misfire and the SES would blink…then it would go off…

that resulted in 20psi with a tea spoon of oil LOL

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### Author: ![6SPD\_S4](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/6spd_s4/32/6326_2.png) [@6SPD\_S4](https://forums.speedlife.net/u/6SPD_S4)
#### Post date: [June 27, 2011, 6:11pm UTC](https://forums.speedlife.net/t/informative-compression-test-info-from-my-own-car/259128/26 "2011-06-27T18:11:20Z")

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In all honesty, just keep beating the piss out of it. Who really cares LOL

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### Author: ![LS\_WS.6](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ls_ws.6/32/6563_2.png) [@LS\_WS.6](https://forums.speedlife.net/u/LS_WS.6)
#### Post date: [June 27, 2011, 6:11pm UTC](https://forums.speedlife.net/t/informative-compression-test-info-from-my-own-car/259128/27 "2011-06-27T18:11:22Z")

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> [@Trader feedback: 3sny.](https://forums.speedlife.net/t/trader-feedback-3sny/43396/150):
>
> that thing hasnt seen running temps in yrs …

:dunno

😢

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### Author: ![SSmokinn\_SS](https://avatars.discourse-cdn.com/v4/letter/s/ec9cab/32.png) [@SSmokinn\_SS](https://forums.speedlife.net/u/SSmokinn_SS)
#### Post date: [June 27, 2011, 6:11pm UTC](https://forums.speedlife.net/t/informative-compression-test-info-from-my-own-car/259128/28 "2011-06-27T18:11:59Z")

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> [@12" Subwoofer, 1000rms, Dual 1ohm voicecoils](https://forums.speedlife.net/t/12-subwoofer-1000rms-dual-1ohm-voicecoils/43382/4):
>
> i did a compression test on my trans am yesterday, the outcome were both the same cold, and well, hot…:dunno

dude we dont need to hear about how you stuck a thermometer in your ass

geesh

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### Author: ![SSmokinn\_SS](https://avatars.discourse-cdn.com/v4/letter/s/ec9cab/32.png) [@SSmokinn\_SS](https://forums.speedlife.net/u/SSmokinn_SS)
#### Post date: [June 27, 2011, 6:12pm UTC](https://forums.speedlife.net/t/informative-compression-test-info-from-my-own-car/259128/29 "2011-06-27T18:12:40Z")

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> [@6SPD S4"](#):
>
> In all honesty, just keep beating the piss out of it. Who really cares LOL

true!

low compression for boosted cars is good anyways! LOL

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### Author: ![LS\_WS.6](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ls_ws.6/32/6563_2.png) [@LS\_WS.6](https://forums.speedlife.net/u/LS_WS.6)
#### Post date: [June 27, 2011, 6:12pm UTC](https://forums.speedlife.net/t/informative-compression-test-info-from-my-own-car/259128/30 "2011-06-27T18:12:59Z")

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> [@GIAC or APR?!](https://forums.speedlife.net/t/giac-or-apr/43398/11):
>
> dude we dont need to hear about how you stuck a thermometer in your ass
> 
> geesh

no need to wait for my asshole to heat up, bitch hold compression like a motherfucker 24/7, just ask paws

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### Author: ![TurboTravis](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/turbotravis/32/6406_2.png) [@TurboTravis](https://forums.speedlife.net/u/TurboTravis)
#### Post date: [June 27, 2011, 6:14pm UTC](https://forums.speedlife.net/t/informative-compression-test-info-from-my-own-car/259128/31 "2011-06-27T18:14:13Z")

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> [@Nice looking truck on Craigslist](https://forums.speedlife.net/t/nice-looking-truck-on-craigslist/43379/8):
>
> Why do you disagree Travis. Please do explain as I believe John stands correct here. SRS. every time I have done and seen it done was not at all normal operating temps. If it’s to help you sleep at night then so be it. Again not trying to be a dick just interested.

In general, any kind of operational checkout on a piece of equipment is done with the piece being tested at as close to operating conditions as possible. Specifically, in this case, an internal combustion engine does not ‘seal’ up (PTWC, etc) until it’s at full operating temp, and that is when any kind of check should be completed.

I do agree with the lumberjack that something is slightly different with that cylinder when it’s not up to full temp (keep it mind it’s read from 10-15psi lower than the others, not 50 or anything), but I’m not concerned at all. I’ll continue to beat the shit out of the car and check the compression every plug change and update the thread if anything changes.

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### Author: ![SSmokinn\_SS](https://avatars.discourse-cdn.com/v4/letter/s/ec9cab/32.png) [@SSmokinn\_SS](https://forums.speedlife.net/u/SSmokinn_SS)
#### Post date: [June 27, 2011, 6:14pm UTC](https://forums.speedlife.net/t/informative-compression-test-info-from-my-own-car/259128/32 "2011-06-27T18:14:16Z")

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lolll

so I take it you have a 427 in that bitch?

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### Author: ![88slowmarro](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/88slowmarro/32/6339_2.png) [@88slowmarro](https://forums.speedlife.net/u/88slowmarro)
#### Post date: [June 27, 2011, 6:15pm UTC](https://forums.speedlife.net/t/informative-compression-test-info-from-my-own-car/259128/33 "2011-06-27T18:15:01Z")

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> [@WTB: 1G DSM parts](https://forums.speedlife.net/t/wtb-1g-dsm-parts/43137/3):
>
> no need to wait for my asshole to heat up, bitch hold compression like a motherfucker 24/7, just ask paws

have ya seen him walk ??? fucker always has heat goin on in there from the drildo thats permanantly in there . that and friction causes heat sooooooo he has a small fire all the time between those thighs . he is like peelin open a freshly grilled , grilled cheese smamich

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### Author: ![TurboTravis](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/turbotravis/32/6406_2.png) [@TurboTravis](https://forums.speedlife.net/u/TurboTravis)
#### Post date: [June 27, 2011, 6:15pm UTC](https://forums.speedlife.net/t/informative-compression-test-info-from-my-own-car/259128/34 "2011-06-27T18:15:49Z")

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> [@Rebate Plan](https://forums.speedlife.net/t/rebate-plan/43344/45):
>
> lolll
> 
> so I take it you have a 427 in that bitch?

?

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### Author: ![SSmokinn\_SS](https://avatars.discourse-cdn.com/v4/letter/s/ec9cab/32.png) [@SSmokinn\_SS](https://forums.speedlife.net/u/SSmokinn_SS)
#### Post date: [June 27, 2011, 6:17pm UTC](https://forums.speedlife.net/t/informative-compression-test-info-from-my-own-car/259128/35 "2011-06-27T18:17:08Z")

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> [@WTB: 1G DSM parts](https://forums.speedlife.net/t/wtb-1g-dsm-parts/43137/5):
>
> ?

I was talking about richies asshole in relation to the new corvette photo thread…

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### Author: ![LS\_WS.6](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ls_ws.6/32/6563_2.png) [@LS\_WS.6](https://forums.speedlife.net/u/LS_WS.6)
#### Post date: [June 27, 2011, 6:18pm UTC](https://forums.speedlife.net/t/informative-compression-test-info-from-my-own-car/259128/36 "2011-06-27T18:18:46Z")

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> [@Is tonawanda court "First come, first serve"?](https://forums.speedlife.net/t/is-tonawanda-court-first-come-first-serve/43391/28):
>
> I was talking about richies asshole in relation to the new corvette photo thread…

actually i put a ls9 in it:wow

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### Author: ![TurboTravis](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/turbotravis/32/6406_2.png) [@TurboTravis](https://forums.speedlife.net/u/TurboTravis)
#### Post date: [June 27, 2011, 6:23pm UTC](https://forums.speedlife.net/t/informative-compression-test-info-from-my-own-car/259128/37 "2011-06-27T18:23:43Z")

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> [@Is tonawanda court "First come, first serve"?](https://forums.speedlife.net/t/is-tonawanda-court-first-come-first-serve/43391/28):
>
> I was talking about richies asshole in relation to the new corvette photo thread…

Gotcha. Sorry. I was having phone secks with John…again

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### Author: ![SSmokinn\_SS](https://avatars.discourse-cdn.com/v4/letter/s/ec9cab/32.png) [@SSmokinn\_SS](https://forums.speedlife.net/u/SSmokinn_SS)
#### Post date: [June 27, 2011, 6:24pm UTC](https://forums.speedlife.net/t/informative-compression-test-info-from-my-own-car/259128/38 "2011-06-27T18:24:36Z")

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> [@Audi A9](https://forums.speedlife.net/t/audi-a9/43363/11):
>
> actually i put a ls9 in it:wow

baller.

blue rim?

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### Author: ![Wayne64SS](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/wayne64ss/32/6365_2.png) [@Wayne64SS](https://forums.speedlife.net/u/Wayne64SS)
#### Post date: [June 27, 2011, 6:25pm UTC](https://forums.speedlife.net/t/informative-compression-test-info-from-my-own-car/259128/39 "2011-06-27T18:25:15Z")

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Every service manual ever says to do it at op temp? The Shift518 manual says different??

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### Author: ![jdaniels](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jdaniels/32/6399_2.png) [@jdaniels](https://forums.speedlife.net/u/jdaniels)
#### Post date: [June 27, 2011, 6:26pm UTC](https://forums.speedlife.net/t/informative-compression-test-info-from-my-own-car/259128/40 "2011-06-27T18:26:25Z")

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> [@FS: desk top pc complete $250 with dvd burner](https://forums.speedlife.net/t/fs-desk-top-pc-complete-250-with-dvd-burner/43277/9):
>
> no , they dont . so if comp is low and a cyl has a slight missfire at idle and throws a code for it . its not a problem ? i have seen it before and it does cause problems .

We’re talking less than 10% variation when cold, you aren’t going to get a misfire for that.

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