Compression Test

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Jan 15, 2008 | 04:57 PM

JoshMO

Thread Starter

3.0 BAR

Joined: Jan 2007

Posts: 1,563

Compression Test

Did a compression test yesterday....

D16Z6

120-----90------90-------120

30 psi difference = not good? You think I should boost this bitch anyways?

Jan 15, 2008 | 05:00 PM

reactone

1.5 BAR

Joined: Jul 2005

Posts: 1,069

Re: Compression Test

Yeah, thats a 25% difference, I think you'd want the cylinders within 10% of each other. Do some preventative maintenance first.

Jan 15, 2008 | 05:18 PM

JoshMO

Thread Starter

3.0 BAR

Joined: Jan 2007

Posts: 1,563

Re: Compression Test

I was afraid someone would say that. I'll do a second test today...

Jan 15, 2008 | 05:27 PM

HMTguy

Guest

Posts: n/a

Re: Compression Test

You make too many threads. Half of them can be answered by downloading a shop manual stickied at the top of this forum.

Jan 15, 2008 | 06:23 PM

JoshMO

Thread Starter

3.0 BAR

Joined: Jan 2007

Posts: 1,563

Re: Compression Test

Quote:

Originally Posted by jagojon3

You make too many threads. Half of them can be answered by downloading a shop manual stickied at the top of this forum.

roger that

Jan 15, 2008 | 06:55 PM

Guy-Fast

0.0 BAR

Joined: Dec 2002

Posts: 0

Re: Compression Test

screw the percentage differences that motor is not in good shape at all. Normal for a d16z6 is 180-190 per cylinder

anything below 150 is a damaged motor somewhere

Jan 15, 2008 | 07:28 PM

JDMFantasy2K

3.0 BAR

Joined: Aug 2005

Posts: 1,654

Re: Compression Test

Quote:

Originally Posted by chris

screw the percentage differences that motor is not in good shape at all. Normal for a d16z6 is 180-190 per cylinder

anything below 150 is a damaged motor somewhere

+1 are you sure your gauge is somewhat reputable and you blocked the throttle open for 4-5 cranks? Also make sure all the plugs are out, lotta guys ---- this up.

Jan 15, 2008 | 08:32 PM

reactone

1.5 BAR

Joined: Jul 2005

Posts: 1,069

Re: Compression Test

Quote:

Originally Posted by chris

screw the percentage differences that motor is not in good shape at all. Normal for a d16z6 is 180-190 per cylinder

anything below 150 is a damaged motor somewhere

Wow yeah, I have an Ls/Vtec, I didn't know what a Z6 is supposed to have but I think I'm somewhere in the 210-220 range across all cylinders.
That sucks.

Jan 15, 2008 | 09:30 PM

Guy-Fast

0.0 BAR

Joined: Dec 2002

Posts: 0

Re: Compression Test

d series should be 180+
b vtec=200+
b non vtec=180+

those are healthy motors that wil enjoy raping and warming up off the rev.

Jan 15, 2008 | 10:08 PM

#10

ifly87

3.0 BAR

Joined: Dec 2005

Posts: 2,081

Re: Compression Test

Quote:

Originally Posted by JoshMO

Did a compression test yesterday....

D16Z6

120-----90------90-------120

You think I should boost this bitch anyways?

Ship Shape.....Boost that bitch hard

Goddamn last time I saw compression #'s that low I was pulling peices of the spark plugs out of the tops of the pistons.

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