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Just Installed Adjustable Ex Cam Gear

BAMR33

By BAMR33,
in Engines & Forced Induction

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BAMR33 Mentor

BAMR33

Posted
Posted

Hi guys,

Very worried at the moment, I have just installed an exhaust side adjustable cam gear and on starting the car I can now hear a tapping sound that wasn't there before. Would this be the sound of valves coming in contact with the pistons?

I made sure the crank angle sensor was marked in position before removing, I marked the belt and gear to make sure the new gear went back into the correct position. Is there any thing else that I could have moved that would have caused this?

My only thought is maybe it dropped a tooth on the harmonic balancer, which would put everything out???

HELP!!

LTHLRB Grand Master

LTHLRB

Posted
Posted

if it dropped a tooth on any of the teeth be it harmonic balancer or inlet or exhaust it will be out reguardless. Check it over, check all the notches on the crank and all that. Or get a mechanic who is good with rb25s to check it over.

Guilt-Toy Grand Master

Guilt-Toy

Posted
Posted

if it was hitting a valve then the engine wouldnt run because it would be too far out.

how loud is this sound ? your better off taking off the top & bottom covers and checking the timing properly before shittin yourself about head damage.

is it missing or backfireing at all?

BAMR33 Mentor

BAMR33

Posted
  • Author
Posted

Not that loud, but the noise does sound like its coming from the general direction of the head. Would anything else like timing make this noise?

No missing, no backfiring. It doesn't make sense I didn't think it would run either if it bent valves.

BAMR33 Mentor

BAMR33

Posted
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Posted

OMG, I checked over the cam gear today and it was in the full retard position. I must have been a bit ambitious to get the gear in and forgot to tighten the keys. I got lucky and I don't think I did any damage judging by a test drive.

Lesson to be learn't for idiots like me, take your time and check everything.

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