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Engine Problems, What Do You Think ?

manko

By manko,
in Engines & Forced Induction

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manko Enthusiast

manko

Posted
Posted

I've just had an engine built from scratch with all new high quality parts by a very reputable mechanic. It produced nearly 700 rwhp and has only travelled 3,000 km ( 1,500 km of which was limited to 4,000 rpm ).

Recently The clutch started to make a squeling\grinding sound that would not go away .. I removed the transmission as i thought it may be a throw out bearing or a clutch plated has bound up on the centre boss. When the trans was removed i turned the engine and found a scraping noise coming from behind the flywheel, Removed the clutch and flywheel assembly to find the clutch lug nuts on the engine side of the flywheel to be rubbing on the shim plate on the rear of the engine. I checked the crank float and found the float to be 1.2mm obviously way out of spec and causing this noise.

When I contacted the mechanic he said it was the 4 plate clutch I supplied him ( it was a brand new ORC ) that caused the damage .

What I would like to know is how much damage do you think it has caused and if the clutch could be responsible for the damage .

Thanks guys

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The Dan Grand Master

The Dan

Posted
Posted

I've just had an engine built from scratch with all new high quality parts by a very reputable mechanic. It produced nearly 700 rwhp and has only travelled 3,000 km ( 1,500 km of which was limited to 4,000 rpm ).

Recently The clutch started to make a squeling\grinding sound that would not go away .. I removed the transmission as i thought it may be a throw out bearing or a clutch plated has bound up on the centre boss. When the trans was removed i turned the engine and found a scraping noise coming from behind the flywheel, Removed the clutch and flywheel assembly to find the clutch lug nuts on the engine side of the flywheel to be rubbing on the shim plate on the rear of the engine. I checked the crank float and found the float to be 1.2mm obviously way out of spec and causing this noise.

When I contacted the mechanic he said it was the 4 plate clutch I supplied him ( it was a brand new ORC ) that caused the damage .

What I would like to know is how much damage do you think it has caused and if the clutch could be responsible for the damage .

Thanks guys

I don't think it's possible to have the gearbox removed and NOT have a scraping noise. That shim plate doesn't sit level when there is no gearbox to hold it up against the block.

Also what do you mean by 'clutch lug nuts on the engine side of the flywheel'?

There shouldn't be any nuts there?

Have you tried talking to the guy who built the engine and actually give him the opportunity to have a look at the clutch etc?

Why isn't that guy pulling it apart?

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