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Rattle Noise After Installing Turbo

chzz

By chzz,
in Engines & Forced Induction

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chzz

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Recently i sold a HKS gt2540 Turbo that came off my friends R33. It was in good condition without any shaft play and was driving very well before taken off the car...I was driving my friends car for abut 3 months because my friend is away and it never had any rattle noises...So about 3 weeks ago i sold the turbo for $800 on skyline forum to one of the members....he got it fitted to his car after 3 days of the sale....

The guy who bought it phoned me today and complaints that there is a rattle noise coming from the engine and its the turbo.......He recon's that the noise goes away after the car warms up n still the car runs good.. and he says turbo is no good and asking for his money back....

Before fitting the turbo he even got it checked from ATP...........

What could be the problem causing the rattle ??????????????..............

I want to help him to find what exacly the problem and direct him to the correct place instead pointing out at me...so guys please help............

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turboedsloth Grand Master

turboedsloth

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he's had it for 3 weeks an its now making a noise. sounds like he hasnt installed it right or something has come loose. has he had a mechanic check it out and diagnose it properly

chzz Collaborator

chzz

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he's had it for 3 weeks an its now making a noise. sounds like he hasnt installed it right or something has come loose. has he had a mechanic check it out and diagnose it properly

Thats what im guessing because when the turbo was in my car it was not making any rattles and looks like the mechanic has not installed it properly and he said he got it fitted in place in hallam..somewhere i never heard of .for 300bucks...His Car is runing stock ecu and stock injectors..

He doesn't know fitting a turbo is a complicated thing he thinks its like fitting a pod filter your self...You have to use correct bolts and proper gaskets and run the oil water lines properly throught a qulified mechanic...

chzz Collaborator

chzz

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$10 says the rattle is the wastegate. Tell him bend the actuator rod so the wastegate is flat up against the housing.

im pretty sure its not the turbo it can should be a small thing.......... is there any good place with a gooh mechanic in melbourne who knows what he's doing, i can send this guy to....I don't even think if i tell himto bend the actuator rod he will understand and i don't wanna go there n mukaround with it either...

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chzz Collaborator

chzz

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Second vote for the wastegate being the source of the rattle. I've had it happen to me as well.

But still does the rattle goes away when the car warms up....He recons it happens only when he starts up the car and goes away in a while and his mechanic said turbo's blades expand when the car heats up thats why the rattlegoes away after heating up....

JimX Grand Master

JimX

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It was on my old car and so a few years ago now and I can't fully remember, I think it only did it when cold but not 100% sure. It would make more sense to do it when cold anyway, because all the metal will expand as it heats up including the actuator rod, thus tightening everything up a little. Turbo blades won't rattle when running if they are hitting the housing, they spin too fast. But that is what I thought was wrong with mine as well until others in this forum told me that. I took my turbo to Garrett who found a problem with the wastegate and repaired it, then no more rattle.

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