Great Compression!!!!<<.... - SRT Forums

Killasrt444 · 10-29-2009, 03:13 PM

well today i gave my 05 srt4 with 59k a compression test..motor was at operating temp..held the throttle open aswell..i got 168 across all 4!!..and 160 across all 4 with throttle closed..im real happy with the results..

Killasrt444 · 10-29-2009, 07:55 PM

what kinda compression r u guys getting when ur cars were at 59k?

conroy9940 · 10-29-2009, 08:03 PM

last i checked i was at around 145 around 60k, im at 85k now and replacing the motor soon (not that i need to jsut don't feel like ruining a block)

Killasrt444 · 10-29-2009, 08:28 PM

Quote: Originally Posted by conroy9940

last i checked i was at around 145 around 60k, im at 85k now and replacing the motor soon (not that i need to jsut don't feel like ruining a block)

really only 145 across at 60k??..my car has always been stock turbo,and now im running 19psi with the fm wga the last 5 k..were u runnign alot of power for a long time?

**04blusrt_4** · 10-30-2009, 09:49 AM

I have beat the living shit out of my car with stock, stage 3, and now D55 power and had 165 across all 4 about a month ago at 55k miles.

Stock turbo (290/330) at 24psi spike down to 16 - 15k miles
Stage 3 (377/425) at 27psi spike down to 22 - 13k miles
D55 (447/446) at 27psi - 10k miles

Tuning owns compression

Killasrt444 · 10-30-2009, 02:00 PM

Quote: Originally Posted by 04blusrt_4

I have beat the living shit out of my car with stock, stage 3, and now D55 power and had 165 across all 4 about a month ago at 55k miles.

Stock turbo (290/330) at 24psi spike down to 16 - 15k miles
Stage 3 (377/425) at 27psi spike down to 22 - 13k miles
D55 (447/446) at 27psi - 10k miles

Tuning owns compression

nice man!!..these motors r really built well!

Killasrt444 · 10-30-2009, 02:08 PM

Quote: Originally Posted by 04blusrt_4

I have beat the living shit out of my car with stock, stage 3, and now D55 power and had 165 across all 4 about a month ago at 55k miles.

Stock turbo (290/330) at 24psi spike down to 16 - 15k miles
Stage 3 (377/425) at 27psi spike down to 22 - 13k miles
D55 (447/446) at 27psi - 10k miles

Tuning owns compression

true..im guessing u keep up real good with the matience like i do..

Xx_R/T_xX · 10-31-2009, 02:47 AM

50k on mine..167 all 4..like 04blue said,if ur tune is solid and isnt all over the place,ur motor will last u

amdguy · 10-31-2009, 02:49 AM

i was getting 165 until the day the head gasket went :-D

Fast420A · 11-05-2009, 09:46 AM

I replaced my rings and HG at 45k since I had to pull the pistons to change the bearings and am currently running 170 across all four with 62k on the motor (17k on the rings).

LinkLow · 11-05-2009, 04:52 PM

Ok so my srt-4 that I just bought about a month ago showed 140 across the board. Car has 53k on it. Am I losing compression or do I have low compression aftermarket pistons that I dont even know about?

**04blusrt_4** · 11-06-2009, 08:23 AM

Quote: Originally Posted by LinkLow

Ok so my srt-4 that I just bought about a month ago showed 140 across the board. Car has 53k on it. Am I losing compression or do I have low compression aftermarket pistons that I dont even know about?

Gas pedal to the floor when you did that? Motor somewhat warm?

LinkLow · 11-06-2009, 10:28 AM

yes and yes...my guess is rings...I'm sure the car saw abuse from the previous owner

Killasrt444 · 11-06-2009, 11:49 AM

Quote: Originally Posted by LinkLow

yes and yes...my guess is rings...I'm sure the car saw abuse from the previous owner

well bad commpression can be bad intake/exhaust valve's or piston rings..and the last thing would be the head gasket..but thats rare

LinkLow · 11-06-2009, 12:00 PM

I will start with a leakdown test and go from there. Might as well replace everything that could be a possible problem while I have it torn apart. I appreciate the help