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A small question for the wise and experienced of you out there.

It looks as if I have finally found a tidy Skyline to be my new wheels.

As I am new to turbo engines, I have tried to listen to all of the wise words spoken on here. :P

I am going to arrange a compression test before parting with my cash. Can anyone tell me what sort of compression numbers a stock R33 GTS-T engine from 94 should produce??

I realise they should all ideally be the same or very close to each other, but as a guide can anyone tell me what values I should see??

Cheers.

D.

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Units = MPa/rpm

RB25DE

Standard Value - 1.26/300

Limit Value - 0.96/300

RB25DET

Standard Value - 1.20/300

Limit Value- 0.90/300

RB26DETT

Standard Value - 1.18/300

Limit Value - 0.88/300

Varience limit between cylinders - 0.10/300 all above angines.

* Values from the Nissan Service Manual.

Get a cylinder leakage test.

Will give a better indication of engine cond.

Have had an engine recently that had acceptable compression variance but the leakage was up to 70% on 2 cylinders.

cheers

ken

As far as i understand it, it involves pumping compressed air into each cylinder at TDC and measuring the amount of air thats bled off as a result of leakage through either piston rings, valves or head gasket. This provides a true full load compression test and can more accurately guage ring wear in particular.

Red17

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