Wits End Turbo Owners (9 Viewers)
- Thread starter spyduh
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- #442
I personally just used new OEM studs. I know a lot of people do overkill and I'm one to do that most of the times. OEM just works, we're only boosting at 6psi so its not crazy numbers. If you're planning on replacing the ECU and go standalone, more boost, intercooled, and do bottom end and top end work. Then I could see getting ARPs worthwhile for waiting.
Otherwise, a lot of people just reuse the original studs as long as they are within spec and not stretched. I didn't bother while measuring and just bought an entire set of new from the dealer. Not cheap, but cheaper than ARP and cheaper than me tearing it apart for a used weak stud I might have measured wrong that's out of spec.
I had envisioned new or rebuilt bottom end in the future. Only reason why...
NLXTACY
Wits' End
Look up the Opel Manta V6 part number. Same hardware but different part number.
NLXTACY
Wits' End
Installing another turbo at the shop
I was just talking to @OutlawMike about my heat issue and I realized that I never mounted the downpipe to the bell housing because I was unsure if the clamp can be installed over the blanket. It was freefloating off the turbo while I waited to get the downpipe mounted to the cats, but I forgot to install so all that force is being loaded onto the v-band at turbo and wastegate, which likely sounds like the culprit for this issue. Mike mentioned that Joey had this exact issue cause by this, so the morale of the story is...Don't Forget a Step! 
I will adjust v-bands and waste gate, tighten them back to seal, then mount the clamp to the bellhousing then report back!
I will adjust v-bands and waste gate, tighten them back to seal, then mount the clamp to the bellhousing then report back!
NLXTACY
Wits' End
My mechanic skillz are...@CJK yup that is literally the same dumbs*** thing I did and it melted the hood liner
you’re in good company
Question about Turbo and External Wastegates that I just couldn't find a clear answer on because I can't say I fully understand all the mechanics...
I understand that air pressure varies at elevations. In addition, I know turbo can help engines perform better at elevation due to turbo normalization.
My question is about external wastegate "opening" at absolute or relative pressure in manifold. Does this mean it opens actually at ~23psi (14.7 sea level + 7.25psi boost) or when the boost pressure reaches +7.25psi relative to atmospheric pressure?
I would think the later but not completely sure.
I understand that air pressure varies at elevations. In addition, I know turbo can help engines perform better at elevation due to turbo normalization.
My question is about external wastegate "opening" at absolute or relative pressure in manifold. Does this mean it opens actually at ~23psi (14.7 sea level + 7.25psi boost) or when the boost pressure reaches +7.25psi relative to atmospheric pressure?
I would think the later but not completely sure.
AussieHJCruza
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From my conversation with @OutlawMike, there should be no issue with putting the clamp over the blanket (someone please correct me if I'm wrong)
mehbohdi
SILVER Star
I would have never been able to install clamp over blanket pretty sure it fits pipe snug, the fitting of that clamp was 1 of the most time consuming parts of install. I fitted it to system first then marked with sharpie then installed blanket (twice). The blanket just has to positioned right. I did have a advantage in that I can do my own exhaust work. Good luck I would say getting attached either way is a priority before driving it much.
Damn, I was really hoping to hear it was a simple process
Maybe it would be simpler to purchase the next size up clamp so it fits over the blanket easily?
NLXTACY
Wits' End
Wait a minute…what are we talking about? A clamp OVER a blanket?!?!? Umm, no
…I can’t tell — is that sarcasm or a serious warning?
NLXTACY
Wits' End
No, that’s very clear, thank you.
That’s what I thought but there was a miscommunication. In post#452, I mentioned I was not sure but hoped someone would correct me
NLXTACY
Wits' End
As a shortcut to secure downpipe to bell housing (instead of removing the blanket, installing clamp, reinstalling blanket, remounting downpipe)I still don’t get where a clamp on the blanket *could* be needed
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