Compression test

osiris19 · Apr 23, 2014

DonJulio said:
If you have no smoke, and your cars getting 180 dry.

I'm pretty sure your where you want to be.

You also stated you have a b20, assuming its a USDM b20 with 8.8:1 CPR

It reassures me your oil rings are holding up.

The 9.2:1 CPR in the USDM b18b/a is suppose to get 200 psi dry is it not?

No. 180 like I stated before.

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zack11122 · Apr 23, 2014

Maybe it is my couple leaks. I'll check them out

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osiris19 · Apr 23, 2014

Do a leakage test. It requires putting compressed air into the cylinders. This will tell you if there are leaks.

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DonJulio · Apr 23, 2014

osiris19 said:
No. 180 like I stated before.

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That's what I said. He said he has the b20. So 180 psi dry.

If He HAD the b18 it would be 200 dry.

osiris19 · Apr 23, 2014

DonJulio said:
That's what I said. He said he has the b20. So 180 psi dry.

If He HAD the b18 it would be 200 dry.

No, b18 is 180 dry. I did it my engines class on my LS. 199 max, 135 min.

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DonJulio · Apr 23, 2014

Ah well I assumed the b18 had higher psi because of the slightly higher compression.

zack11122 · Apr 23, 2014

osiris19 said:
Do a leakage test. It requires putting compressed air into the cylinders. This will tell you if there are leaks.

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Thanks. I will have to do this soon and let you know.

osiris19 · Apr 23, 2014

DonJulio said:
Ah well I assumed the b18 had higher psi because of the slightly higher compression.

Nah. Most 4 cylinder engines range the same.

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dopematic · Apr 23, 2014

Minimum compression is 130.
For compression test, you're really only looking for consistency between the cylinders with the max variance of 35psi.

Accel.speed · Apr 23, 2014

Haaaa last time I did mine they were like 90, 85, 95, 105.

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osiris19 · Apr 24, 2014

Accel.speed said:
Haaaa last time I did mine they were like 90, 85, 95, 105.

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Wtf lol

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DCiFound · Apr 24, 2014

I heard u want to go by the third result on a 3 consecutive starts. Resetting to zero each time. Try that if u haven't done it yet. Other than that, 180 is stock

zack11122 · Apr 24, 2014

Eh I guess I'm not really worried. I'll do my oil pan this oil change and see what happens.

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Compression test

osiris19

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zack11122

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DonJulio

Reppin' tha NW

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DonJulio

Reppin' tha NW

zack11122

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dopematic

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Accel.speed

basically, i like fast!

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DCiFound

SEAHAWKS!!

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