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Oh no ... knocking....HELP ME


ManwithSupra

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Hi Yeah i am going to check tomorrow, i am not using the car since i heard this sound so whatever damage has been done i am not adding to it.

 

When i checked on the night i heard the sound i could not see the pully wobbling at all but then i was using a torch and it was dark but i didnt check for play in the unit - going to have a fun bank holiday weekend eh ! lol

 

If the worst comes to the worst and i have to buy another engine i would rather buy a low mileage engine for ££££'s one than pay for ££££'s of repairs to a engine which may not be in the best of condition....

 

But fair play this is the only "possibly" major thing that has gone wrong with the supe, over the 3 years i have had her - and they are not getting any younger.

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I had this with a car where the harmonic damper was loose. It had chewed up the key way in the crank and worn the crank nose, because the owner left it hoping the noise would fix itself :) I'd have a good look in that area, and check the torque on the crank pulley bolt. If it's loose re torquing is NOT a satisfactory fix!

 

Crikey.

 

Must have been a loose front crank bolt, then. Every good designer knows that you never, ever put drive loads through a keyway.

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Do you think it a major failure? i.e new engine time ??

 

You'll need to remove the pulley and check the condition of the end of the crank, if it has damaged the crank like the example CW posted earlier this will be costly.

 

Hopefully the crank is okay and you can get away with fitting a new pulley and oil seal. It would be worth taking the opportunity to fit a new oil pump at the same time.

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You'll need to remove the pulley and check the condition of the end of the crank, if it has damaged the crank like the example CW posted earlier this will be costly.

 

Hopefully the crank is okay and you can get away with fitting a new pulley and oil seal. It would be worth taking the opportunity to fit a new oil pump at the same time.

 

Not wanting to be a scare mongerer

But he also needs to investigate the cause of the damper coming loose...

If it is due to not being torqued correctly during a replacement for example, and there is no damage to the crank (unlikely), all tolerances are ok...(end play for example)

It may be ok. But if a failing thrust bearing has caused the damper wobble, then a new damper will not fix it IMHO

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I have never seen a failed thrust washer on any MKIV engine. Maybe if an aftermarket clutch was VERY wrongly adjusted you might see it, but otherwise thrust washers see negligible load. The damper needs to come off and the crank snout properly examined next.

 

Interesting..

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I have never seen a failed thrust washer on any MKIV engine. Maybe if an aftermarket clutch was VERY wrongly adjusted you might see it, but otherwise thrust washers see negligible load. The damper needs to come off and the crank snout properly examined next.

 

Was going to attempt to do this today but the weather is to bad, so if the snout is not damaged is it a case of putting on a new oil seal and pully?

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You'll need to remove the pulley and check the condition of the end of the crank, if it has damaged the crank like the example CW posted earlier this will be costly.

 

Hopefully the crank is okay and you can get away with fitting a new pulley and oil seal. It would be worth taking the opportunity to fit a new oil pump at the same time.

 

 

Looking on toyota EPC i cannot see an oil seal for the front of the engine do you mean the thrust washers??

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Hi Mate, i am in chandlers ford next to eastligh

 

ah bit of a trek

 

Was going to attempt to do this today but the weather is to bad

 

and yes the weather is harsh.............

 

let em know if you get really stuck, i have the tools and a used crank pulley we could try etc.

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yep! have a look for marksupras guide

 

Cheers that is a good guide - looks like i am going to have to attempt this tomoz due to sideways sleet and rain :(

 

Just for some info what size is the nut on the Crank pully, and in the event that all that is needed to sort the problem is to change the pully what is the lbs of Torque needed to tighten the bolt back up (also will i need a new bolt?)

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