Thread: sr16 piston compression test

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2012-10-02 20:04:41

SRK-SER

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sr16 piston compression test

what reading is everyone getting running these pistons??

i got 275psi across the board just trying to make sure its in the right range

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2012-10-02 20:07:07

Payu

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I have seen 320psi on a 228whp motor!!

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2012-10-02 20:07:13

blackb13se-r Online/offline status of blackb13se-r is unknown

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i'll be checking mine this week. i think it's normal for 250psi-broken guage pressures. lol.

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92 Sr20ve "high comp" b13!! Gave up its soul for the 94!http://www.sr20-forum.com/members-rides/49144-my-sr20ve-b13.html
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2012-10-02 20:10:29

SRK-SER

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The motor is fresh though, should I wait for the rings to seal properly and try again?

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2012-10-02 20:14:47

Payu

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It should be 300psi or over!!
Did you did a valve job or checked for bent valves, piston ring end gap clearance??

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2012-10-02 20:22:42

SRK-SER

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Haven't checked for bent valves and the rings were checked when I installed them

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2012-10-02 20:52:09

B15NEOVVL

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Pegging a 300 PSI comp. tester seems to be the norm. You have the right idea though, with giving the fresh build a bit of time to improve the ring seal. How many miles on the engine?

Plus, it's even across the board so that is a good sign.

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2012-10-02 21:00:50

SRK-SER

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Not even a mile lol drove like crap and my wideband decided to stop working so I parked it

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2012-10-02 21:24:10

B15NEOVVL

B15 rebuild underway!!

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^ Good decision on parking it. If you are worried, you can pop the valve cover and verify the cam timing. You could also check the valves with a bore scope if you are really worried but I'm guessing you are probably fine if the cam timing is good.

Last edited by B15NEOVVL on 2012-10-02 at 21-25-04.

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2012-10-02 22:19:36

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happyharrysco1 Online/offline status of happyharrysco1 is unknown

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what procedure are you using to check the comp ratio? also is your cam timing 100% right?

....phone....

Last edited by happyharrysco1 on 2012-10-02 at 22-20-23.

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