put in head gaskets now turbo sounds funny

[master1973]

well finally finished my ARP studs, and egr delete, put everything back together and started right up. only thing is a small exaust leak and my turbo makes a buzzing sound when vgt valve closes for boost. I did go to T6 5-40 motor oil but that's the only thing changed as far as the turbo is concerned. Could that be affecting my vgt valve and closing the vaines to far? turbo was working great when i started the project.

Thanks

Ben

[southend]

Exhaust leak, misaligned exhaust pipe. Common.

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[master1973]

so you think exhaust leak would make turbo make a light grinding sound? i hope that is it!! was thinking of loostening the exhaust back up and giving it a shake and re-tightning. It was a battle getting y pipe hooked up to turbo and i don't think it is alligned right. Any suggestions on best way to get y pipe alligned? thanks

[southend]

Originally Posted by master1973

so you think exhaust leak would make turbo make a light grinding sound? i hope that is it!! was thinking of loostening the exhaust back up and giving it a shake and re-tightning. It was a battle getting y pipe hooked up to turbo and i don't think it is alligned right. Any suggestions on best way to get y pipe alligned? thanks

I'm suggesting your exhaust system is making noise from misalignment. Not that your turbo is grinding. Loosen all the turbo mounting bolts and remove the clamp. The clamp will not align the pipe. Make sure the pipe is aligned, then tighten the clamp, once the clamp is tight, tighten the turbo mounting bolts.

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[kinnisoj]

Just went throught this after doing head gaskets as well. The only way I could finnally get the leaks to stop was to loosen all the bolts on the exhaust from the y pipes to the turbo clamps to the exhaust itself. Start at the turbo clamps, when ervything is just sloppy bangin around start with the turbo. Tighten that up then to the next. Drove me nuts gettin this done but "TINA" sure did sing once it was right...

[master1973]

Finally got it sealed up, what a difference truck runs better then ever!!!

[southend]

Great! Thanks for the update.

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