Compression Test Results

[R33PWR]

167 across the board my mechanic said buy ,buy,buy. If you sell ,sell to me.

[khunjeng]

I got 165 - 160 in all 6. easy decission.

1 year later, running 270 rwkw and all the right mods, few track days, few DECA days and no dramas.

[str00th]

165ish on all 6

cold start.

[FordyR31]

When i bought my engine it had 160-150-150-150-150-150.. I tested a heap that were around 100 and then one piston dropped to 80 or as low as 50. Glad i kept the faith!

Liam

[dmr]

sorry to hijack an old thread..

135, 135, 135, 130, 135, 130 ..

opinions?

[Dose Pipe Sutututu]

RB20s run lower compression if you compare it to a RB25

so do not compare your RB20 results against RB25 owners... your going to have nightmares..

I recently did a compression test by myself and it read on average 145 across all cylinders

[GTAAAH]

i got 185 across all six in my GTR which makes no sense to me because that's too high even if they were taken when the engine was hot/cold.. plox explain sum1?

[Cubes]

Gauges differ. Cam timing.

[SilverECR33]

hi guys,

Well since I started this thread, I was retaining stock levels of boost at the time.

I have since been driving around on about 11psi, on the stock turbo via AVC-R controller.

New test results show, that in both wet and dry tests, compression and valve seals are wearing due to the extra psi. here ar the results from the dry test, (same test results Posted prior)

1. 152 2. 144 3. 140

4. 135 5. 140 6. 145

Interesting to see the differences from the extra boost that has been running. I think for Everyday driving it would be safer to retain as less booost. This test was preformed on a normally driven car, only given now and then rarely. Regular oil changes and services etc.

[SLY-25T]

My results-

148

147

149

148

149

150

on a rb25det with 201000kms, full exhaust, boosted to 12psi, cooler etc. im happy with it. but should i be? lol

[Flash89]

i did a compression test on my rb20 180sx

1. 132

2. 122

3. 130

4. 120

5. 125

6. 130

i did it with the throttle closed

what do yous think?

[Dorifta]

175 is excellent, mine were in the 150 to 160 range. Its not so much the amount of compression u have, but the relativitey between cylinders that matters