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Question K27 Exhaust Side Stud Bolts Part # 90008105102 Pitch 1.25 or 1.50 ?????

Can somebody tell me what the pitch is for the K27 exhaust side M10 studs?

The stud part number is: 90008105102

I know they're M10 but it doesn't say what the pitch is?

They're either 1.25 or 1.50


Thanx

Old 11-21-2014, 02:22 PM
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Crotchety Old Bastard
 
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Old 11-21-2014, 02:47 PM
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Thank you =)
Old 11-21-2014, 02:53 PM
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When I was using K27 turbos I went to a local bolt supply place and bought five 4" or 5" long stainless steel 10x1,5mm bolts with 17mm wrench size heads. They were cheaper when buying 5 or more.
I cut off enough of the bolt shank to make 4 studs for the turbo with a die grinder with a cut off wheel and then beveled the sharp edge.
Worked great on the turbo with high temp antiseize on the threads, they cost less than plain steel studs, and they never rusted into the turbo housing.
Then I used the remaining stainless bolts that were now around 2" or 3" long on the motor mount and some other places.
Old 11-21-2014, 03:00 PM
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Hi Jfairman,

The reason why I asked was cause I'm updating the muffler with a stainless muffler and since I'm updating that I mind as well update the nuts to "Stage 8," locking nuts so that the heat cycles won't affect the muffler sealing to the turbo.
Old 11-21-2014, 03:07 PM
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Ok... mine never leaked and I had a stainless B&B muffler bolted to the turbo.
Have fun getting grade 8.8 or 12.9 plain steel studs out of the turbo after they Tijuana weld themselves in.
Old 11-21-2014, 03:21 PM
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I get what you're saying. Sounds like a great fix

Old 11-21-2014, 04:16 PM
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