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Old 11-09-2002, 02:02 PM   #1
latinskllz
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Estoril Bleau

Default EJ25 Compression Test Results

Hello Guys,

I just did a compression test on my stock EJ25 before I go turbo. I'd like to see how healthy the engine is before I go through a series of mods.

Here are the results:

1) 215 psi
2) 220 psi
3) 225 psi
4) 230 psi

I did the test this morning. Any comments? Based on my research here on i-club, those numbers are signs of a healthy engine.

What's funny is that some people made fun of me when I warm up the car every morning before taking off.

What do you think guys? Should I do a second for comparison? I need a laptop to install my TEC-II.

I'm debating if I should just install the Vishnu Fuel Rails right now and the Walbro 255lph fuel pump and RC 550's so I can run in parallel now.

I don't know.....Please comment, I'd like to get insight on the experts.

Thank you,
Kevin
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Last edited by latinskllz; 06-06-2003 at 04:24 PM.
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Old 11-11-2002, 11:44 AM   #2
m750
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results seem quite positive...
I wouldn't worry about them. As for the laptop, I wouldn't install a tech II unless I knew what I was doing... that's just me. It's the tuning stages where people end up blowing up their motors and I'd hate to see yet another victim, maybe the guys in the aftermarket forced induction forum would have a better idea,
AO
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Old 11-11-2002, 11:51 AM   #3
8Complex

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Woah... now those are some impressive compression test results. The books call for 165-180psi during testing. I wonder what mine is... I know nothing is broken in there yet....
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Old 11-11-2002, 02:40 PM   #4
HndaTch627
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Quote:
Originally posted by 8Complex
Woah... now those are some impressive compression test results. The books call for 165-180psi during testing. I wonder what mine is... I know nothing is broken in there yet....
yeah, that's a pretty high draw, did you do this with the ignitor disconnected??
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Old 11-11-2002, 02:46 PM   #5
latinskllz
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Default Hmmm....

Quote:
Originally posted by HndaTch627
yeah, that's a pretty high draw, did you do this with the ignitor disconnected??
What I did was this:

1) Warmed up the car to normal operating temp.
2) Released Fuel Pressure (disconnected fuel pump harness, turned the car on until it stalled)
3) removed all spark plugs and disconnected the harness connecting to the coilpack on top of the intake manifold to prevent spark.
4) opened the throttle all the way
5) turned the key to start the car, waiting 7 compression strokes till the pressure was steady. Repeated step 4/5 for every cylinder.

That was it....so did I do it with the ignitor disconnected, I think so.

Thanks,
kevin

Last edited by latinskllz; 11-11-2002 at 02:55 PM.
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