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RB25 run 9.0:1 static compression standard and have slightly higher compression figures because of that. Of a healthy engine you should be looking for 160-170psi. As long as they are all within 10-12psi it should be fine but with 90 psi you will be down a fair bit on power.

EDIT!!

Here's the figures from my manuals;

RBCompressionFigures.jpg

1.20 MPa = 12 BAR = 176.4 psi

1BAR = 14.7 psi

Standard: 176.4 psi

Limit : 132.3 psi

Difference between cylinders: 14.7 psi

Edited by D_Stirls
RB25 run 9.0:1 static compression standard and have slightly higher compression figures because of that. Of a healthy engine you should be looking for 160-170psi. As long as they are all within 10-12psi it should be fine but with 90 psi you will be down a fair bit on power.

EDIT!!

Here's the figures from my manuals;

<snip>

1.20 MPa = 12 BAR = 176.4 psi

1BAR = 14.7 psi

Standard: 176.4 psi

Limit : 132.3 psi

Difference between cylinders: 14.7 psi

Ive got between 80 - 92 psi on all 6 lol

need some advise,

the fan that sits onfront of the rad has the mesh around it..

does that need to be connected? mine is running consistanly and is pissing me off..

can i disconnect it?

thats the aircon fan mate, confirming you're talkin about the one thats in front (and by front we'd mean closest to the front of the car) of the radiator?

if so, definitely a/c fan, and its probably still sitting in front of the aircon radiator anyways (have you gone that extensive when the actual radiator was out, and get the other radiator (which tucks in under the rad support panel) out?

i still have all the air con connected.. but i NEVER turn it on...

just in the last week the fan has been on everytime i start the car..

wont turn off so i was wondering if i can unplug it?

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