Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Go Back   Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum > General > Tech Talk

Tech Talk Technical Discussion About The Nissan 240SX and Nissan Z Cars


 
 
Thread Tools Display Modes
Prev Previous Post   Next Post Next
Old 01-15-2017, 12:55 PM   #1
Jerseyzillest
 
Join Date: Nov 2012
Location: North Jersey
Age: 32
Posts: 8
Trader Rating: (0)
Jerseyzillest is an unknown quantity at this point
Feedback Score: 0 reviews
Compression test help

I have a blacktop sr20 (I believe it's stock as that's what I was told) the car never gets driven as it's a project car.
Anyways i live in jersey and its been sub 30 degree weather lately. I decided to do a compression test to have an idea of how healthy the engine is. Well I'm a bit thrown off and confused.

Compression test cold

1 - 124 psi
2 - 119 psi
3 - 125 psi
4 - 125 psi

Now I also decided to do a warm test (this is where I'm confused) the compression numbers are very similar to the cold test. So I decided to put some oil in each cylinder to see if the numbers jump.

1 - 150 psi
2 - 145 psi
3 - 150 psi
4 - 150 psi

Now I know that when the compression numbers jump it usually means bad rings, however I'm confused as to why the compression remained the same between cold and warm. 🤔 Maybe I didn't wait long enough for the engine to warm up?

no prior symptoms no lack of power or anything to have me question the compression I did it just so I know where I'm at.

Any input is appreciated 😬
Jerseyzillest is offline   Reply With Quote
Sponsored Links
 

Bookmarks

Tags
compression, low, piston rings, s13, sr20



Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -6. The time now is 12:41 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
vB.Sponsors
Copyright ? 1998 - 2022, Zilvia.net