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Rb25 No Compression

nardocrew
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nardocrew Apprentice

nardocrew

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I just recently did a rb25 swap into my r32, I cannot get the car to start, turns out there's no compression in any of the cylinders, I purchased the motor from a reliable seller who says they tested the compression and replaced the timing belt and all was good.

I didn't mess around with the timing or remove the cams so I don't believe there is any possible way I could have bent the valves, let alone all of them. the only thing I did mess around with while trying to get it started is the cas, is it possible that's the cause of no compression? and if not does anyone have an idea what else could be causing the problem? I have yet to pull the head off to check the valves.... Also its a series 2 rb25 and it has hydraulic valves

Any help would be greatly appreciated

Thanks

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nardocrew Apprentice

nardocrew

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Does the engine at least spin?

Might want to check the battery and starter :/

Ya, sorry i didnt mention that, the starter goes engine spins everything is as it should be except the no compression part....

nardocrew Apprentice

nardocrew

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  • Author
Posted
I just recently did a rb25 swap into my r32, I cannot get the car to start, turns out there's no compression in any of the cylinders, I purchased the motor from a reliable seller who says they tested the compression and replaced the timing belt and all was good.

I didn't mess around with the timing or remove the cams so I don't believe there is any possible way I could have bent the valves, let alone all of them. the only thing I did mess around with while trying to get it started is the cas, is it possible that's the cause of no compression? and if not does anyone have an idea what else could be causing the problem? I have yet to pull the head off to check the valves.... Also its a series 2 rb25 and it has hydraulic valves

Any help would be greatly appreciated

Thanks

. needed 10 posts for pm...

nardocrew Apprentice

nardocrew

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I tried it throttle open and closed, i have yet to pull the head off but I pulled the valve covers off and the exhaust valves are all stuck open slightly and all the intake valves are closed and in perfect condition, all the valves move, cams spin and its all timed correctly. Is it a common thing for an engine thats been sitting for 6 months or w.e it is to have valves stick for any possible reason, I want to leave pulling the head as my last resort assuming the exhaust valves are bent...

Thanks alot for your help :P

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