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| Engine Tech Technical discussion related to all relevant engines such as KA, SR, RB, CA, 2JZ , L24/26/28, VG, VQ, and LSx series. |
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01-08-2009, 10:17 AM
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#1 |
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Leaky Injector
Join Date: Jan 2008
Location: Lemoore,Ca
Age: 33
Posts: 76
Trader Rating: (0)
 Feedback Score: 0 reviews
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compression test...
hey guys. im currently blowing a crap ton of white/blue smoke on deccel. i had th turbo off the other day and there was some shaft play in and out, but not up and down. did the compression test last night(and wow starter is about to go out) and here are the results.
1 cyl- 145 psi 2 cyl- 140 psi 3 cyl- 140 psi 4 cyl- 145 psi i tried reading googling around and got that numbers are supposed to be around 160?? so if you'all could tell me weather my numbers up there mean that i have bad rings?? or just a bad test? any help will be appreciated. thanks |
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01-08-2009, 10:23 AM
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#2 |
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Post Whore!
 
Join Date: Dec 2006
Location: Misawa, Japan
Posts: 6,815
Trader Rating: (8)
 Feedback Score: 8 reviews
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Thats not too bad
A brand new SR according to the FSM is 157psi Adverage is about 150 I got a friend whos is around 130-135 still runs and pulls hard More than likely is the turbos oil seals are shot Im sure if you pull the turbo off and check the exhaust side it would be oily. How does the Compressor side look? Clean or oily?
__________________
 後輪駆動車１番1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit |
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01-08-2009, 09:58 PM
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#3 |
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Leaky Injector
Join Date: Jan 2008
Location: Lemoore,Ca
Age: 33
Posts: 76
Trader Rating: (0)
Feedback Score: 0 reviews
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thanks man, oil is all in the piping, even some that just barely come out by the blow off valve. how about shaft play with it going in and out considerbly more, alot, way more, then up and down
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01-09-2009, 12:45 AM
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#4 |
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Post Whore!
Join Date: Dec 2006
Location: Misawa, Japan
Posts: 6,815
Trader Rating: (8)
Feedback Score: 8 reviews
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that turbo's toast, time for a rebuild or perhaps an upgrade?
 Be sure to clean all that oil out of th IC system too
__________________
後輪駆動車１番1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit |
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01-09-2009, 04:06 AM
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#5 |
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Post Whore!
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Yup, /thread, it's your turbo. Your motor's not too happy either, but it's aiight. It's not so much the number, as the variance between the cylinders, that'll kill ya - you want <10% variance (you've got much more than that, but that could just be how you measured).
__________________
Jordan Innovations has a new web site! www.JordanInnovations.com -- All your favorite FD Pro Drifters love it, trust me -- www.JordanInnovations.com |
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01-09-2009, 07:16 AM
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#6 |
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Man w/ CTSV & a Car Seat
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Some up and down is acceptable, lots of in and out is bad. Thats how you know the bearings are done and with the oil in your compressor side, seals are done too.
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01-11-2009, 12:39 PM
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#11 | |
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Post Whore!
Join Date: Dec 2006
Location: Misawa, Japan
Posts: 6,815
Trader Rating: (8)
Feedback Score: 8 reviews
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Quote:
__________________
後輪駆動車１番1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit |
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