Stock Twin Turbo Hardware
#1
Stock Twin Turbo Hardware
Been scouring the internet and forums for somewhere to buy basic Iconel hardware. I believe that the factory bolts that hold the stock turbo center collectors together are, or should be, Iconel (See Picture).
I had one break while taking the assembly apart to port the wastegate and need to replace at least the one (m8 x 1.25 thread ~20mm long). Does anyone have a source for buying basic Iconel bolts? The only places I can find are industrial suppliers with like 20,000 piece minimum buys and everything else is either studs or shorter CHRA bolts for single turbos. Unless someone has had success other than Iconel but I don't think that is the best idea in this area, I don't want to blow one of these gaskets after stainless steel bolts stretch because they are not replaceable without buying another turbo assembly.
I had one break while taking the assembly apart to port the wastegate and need to replace at least the one (m8 x 1.25 thread ~20mm long). Does anyone have a source for buying basic Iconel bolts? The only places I can find are industrial suppliers with like 20,000 piece minimum buys and everything else is either studs or shorter CHRA bolts for single turbos. Unless someone has had success other than Iconel but I don't think that is the best idea in this area, I don't want to blow one of these gaskets after stainless steel bolts stretch because they are not replaceable without buying another turbo assembly.
#3
I think based on availability of this hardware I am going to roll the dice on a grade 10 black oxide bolt. I will report back if I have any issues.
I am hoping that since the turbo assembly is held by studs to the exhaust manifold that these bolts don't see much load.
But yes I think the stud / Nut idea would also work.
I am hoping that since the turbo assembly is held by studs to the exhaust manifold that these bolts don't see much load.
But yes I think the stud / Nut idea would also work.
Last edited by Ziggy; 01-14-20 at 03:50 PM.
#4
Senior Member
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I think based on availability of this hardware I am going to roll the dice on a grade 10 black oxide bolt. I will report back if I have any issues.
I am hoping that since the turbo assembly is held by studs to the exhaust manifold that these bolts don't see much load.
But yes I think the stud / Nut idea would also work.
I am hoping that since the turbo assembly is held by studs to the exhaust manifold that these bolts don't see much load.
But yes I think the stud / Nut idea would also work.
Last edited by quichedem; 01-14-20 at 07:05 PM.
#7
And right there is the issue, not something that can be purchased from Ray unfortunately.
Called around basically every distributor said the same thing "You won't find an Inconel metric hex head bolt in small quantities" at least not in the U.S. Nakd is probably right, only good option is to scavenge off broken twins. Risk of blowing the gasket is just too high to not get the correct bolt. I don't think one of the studs + nut would work as there isn't much room once all assembled.
Thanks for bouncing ideas here.
Called around basically every distributor said the same thing "You won't find an Inconel metric hex head bolt in small quantities" at least not in the U.S. Nakd is probably right, only good option is to scavenge off broken twins. Risk of blowing the gasket is just too high to not get the correct bolt. I don't think one of the studs + nut would work as there isn't much room once all assembled.
Thanks for bouncing ideas here.
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