Rb26 Compression Results

[WhO]

Hi All

Recently i picked up a r32gtr and after replacing the turbo that had a blown oil seal its been driving really well. Out of interest i decided i'd do a compression test on it and these were the results

120

130

130

130

125

130

Now i know these are a bit low for the motor but they seem relatively consistent and adding oil to the cylinders only upped compression by about 10-15psi. The car drives well and feels to have a reasonable amount of power. Any ideas why the low compression and will it cause me any major problems? It doesnt worry me too much as down the track if the motor starts to die i'll rebuild it but for now im more curious what the causes would be of the lower compression (just worn rings etc?) Maybe dodgy tester?

Cheers,

Rob

[WhO]

Just tried it again, realised that although my batteries new being in the boot it must have a fair voltage drop or something as its only turning over at about 140-150rpm. Possibly why the low compression?

[SiR_RB]

sounds like the engine is abit tired....most proberbly a high kilometer engine/ worn piston rings

if its not giving u any probs, just keep driving it and enjoy it

[R31Nismoid]

If the results are near enough to each other with minimal variance, then the motor is fine.

The results are a little low, but its a 15-20yr old motor. Its not going to be 160 across all cylinders and silly to realistically think they would be.

So basically the same as all the other compression test threads -

You didnt search, i can tell as this has been answered so so so many times now, with the same answer each time.

Here are some such threads going into the variance factor and the fact that your results are normal so there is no valid reason to question the results

http://www.skylinesaustralia.com/forums/He...mp;hl=comp+test

http://www.skylinesaustralia.com/forums/Co...mp;hl=comp+test

http://www.skylinesaustralia.com/forums/Co...mp;hl=comp+test

http://www.skylinesaustralia.com/forums/Wa...mp;hl=comp+test

http://www.skylinesaustralia.com/forums/Co...mp;hl=comp+test

There are plenty more threads on comp tests - have a search if your still feeling like the above are not enough

Thanks!