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04-24-2005, 01:54 PM
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#1 | |
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AF Enthusiast
 Join Date: Aug 2004
Location: beaumont, Texas
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Post Compresion numbers
I did a compression test like a week ago and it was 150,150,150,150 being even all across is good but are these numbers low, normal, (pretty sure not high) I'm just not sure. I was thinking 170 was factory for some reason I think I'm getting blow by but I don't know. Others please post compression Numbers
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04-24-2005, 04:20 PM
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#2 | |
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Banned
 
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Re: Post Compresion numbers
leakdown will tell you more than a compression...
im doing 1) 95+% 2) 90+% 3) 95+% 4) 95+% Fuck the SR20 intake manifold |
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04-24-2005, 04:21 PM
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#3 | |
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Banned
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Re: Post Compresion numbers
PS 150+ is excelent for any 15yr old motor.
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04-24-2005, 04:29 PM
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#4 | |
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240SX Guy
 Join Date: Feb 2004
Location: melrose, Florida
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Re: Post Compresion numbers
Not an SR, lol, but still.
1- 182psi 2- 182psi 3- 182psi 4- 180psi R.W. is correct. I'm gonna pick one up sometime. You can actually use the hose off your compression tester and just pressurize the cylinder via air compressor and listen for air leaking past. Very helpful finding headgasket leaks.
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-Cory 1992 Nissan 240sx KA24DE-Turbo: The Showcar Stock internals. Daily driven. 12.6@122mph 496whp/436wtq at 25psi |
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04-24-2005, 06:32 PM
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#5 | ||
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AF Enthusiast
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Re: Post Compresion numbers
mayday, it might have been the tool you were using that gave you lower than usual numbers. the chances of all four cylinders in a 4 year old engine being consistently 10% lower than what is considered normal seems like quite the coincidence
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Quote:
http://www.cardomain.com/id/dbo240  ***LOOKING FOR A COUPE, ENGINE IS NOT AN ISSUE*** |
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04-26-2005, 02:17 PM
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#6 | |
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AF Enthusiast
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Location: Somewhere in Iraq (Secret), West Virginia
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Re: Post Compresion numbers
the FSM states the compression should be 128-156psi with 14psi difference between each. This is straight out of the S14 FSM, an english S13 SR20DET FSM doesnt exsist. My numbers are about 145 for all.
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SR20DET RPS13 3" Trust Downpipe, Catco Cat, RS*R ExmagII Catback Z32 Brakes, Tomei Technical Traxx LSD Blitz BOV |
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04-28-2005, 12:36 PM
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#7 | |
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AF Newbie
Join Date: Nov 2004
Location: Oak Creek, Wisconsin
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Re: Post Compresion numbers
then, my #'s are way off for a 1991 DOCH at 170 across the board? and leakage it almost next to nothing with 111675 on my motor and the rest of my car
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04-28-2005, 02:19 PM
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#8 | |
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AF Enthusiast
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Re: Post Compresion numbers
The KA has much higher numbers because of higher compression. my numbers were for the SR
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SR20DET RPS13 3" Trust Downpipe, Catco Cat, RS*R ExmagII Catback Z32 Brakes, Tomei Technical Traxx LSD Blitz BOV |
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04-28-2005, 03:40 PM
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#9 | |
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Banned
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im pretty sure KA is
Im pretty sure KA is 179-152 with 14 PSI difference MAX...ill go check one sec...OK If someone can find me a Manual for the 240SX that has only the 240SX in it i will buy it off them with interest!!...my manual is for Stanza/200SX/Pulsar/Sentra(i think) So there are over 12 different ENGINES in there not to mention the Stanza also comes in 4WD so nice diagrams on Transfer cases when your trying to find the KA24 Trans...
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04-28-2005, 05:28 PM
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#10 | |
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240SX Guy
Join Date: Feb 2004
Location: melrose, Florida
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Re: Post Compresion numbers
Uh, www.zeroyon.com has downloadable FSM for pretty much all the 240sx versions. Except the redtop silvia as I don't think there is a manual avaliable in english for that car.
__________________
-Cory 1992 Nissan 240sx KA24DE-Turbo: The Showcar Stock internals. Daily driven. 12.6@122mph 496whp/436wtq at 25psi |
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04-28-2005, 07:06 PM
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#11 | |
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Banned
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Location: Broken Arrow, Oklahoma
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no...
I want the actual Physical Manual
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