Going f!ix my turbo to manifold joint for good!
#21
I will get new mf gasget and nuts for mf and dp. Should I replace the studs in head and turbo too or should they be fine? There are all quite new (sept 08). Im leaning towards leaving them alone and shortening them where they are excessively long.
#22
Removed the turbo and manifolde earlier this week and took them to the race shop to have the broken stud removed.
Discussed the various options and they strongly advised against welding them. Welding injects a lot of heat and would alter the material and it would probably crack right next to the weld...
They will source some incredibly strong studs and meanwhile I got the manifold and turbo back with the 'regular' studs so I can put together the car for street use at least...
So while I can drive again once I get it back together, I am still at a loss at the solution to this never ending issue...
During dis assembly I noticed the hex nuts on the oil return flange where not fully tight, so that probably caused some oil loss there I noticed a while back.
Discussed the various options and they strongly advised against welding them. Welding injects a lot of heat and would alter the material and it would probably crack right next to the weld...
They will source some incredibly strong studs and meanwhile I got the manifold and turbo back with the 'regular' studs so I can put together the car for street use at least...
So while I can drive again once I get it back together, I am still at a loss at the solution to this never ending issue...
During dis assembly I noticed the hex nuts on the oil return flange where not fully tight, so that probably caused some oil loss there I noticed a while back.
#23
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I'm going to safety wire bolts with large diameter safety wire. If that fails, one time, I'm going with a begi s4 with v-bands on everything and a tial wastegate. There's a reason racecars use v-bands.
#32
The race shop suggested we source some Inconel (space material) studs.
Others also go that route:
Inconel studs - where to get em Syd? - PerformanceForums
Others also go that route:
Inconel studs - where to get em Syd? - PerformanceForums
#33
There are several threads about this problem and I am a bit confused. if it is the studs stretching due to thermal expansion would you want to use a material for the stud that had a lower COE like titanium or if it is stretch of the stud caused by expansion of the flanges do you want something more resistant to stretch(is titanium more resistant to tension than steel?), just larger diameter studs, somehow add additional studs to the flanges?
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AnotherDamnMiata
DIY Turbo Discussion
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11-19-2015 11:34 PM