Wits End Turbo Owners

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Anyone have a line on ARP 203-4205 studs?

Summit was to ship 6-21 now expected 9-17.

My headgasket kit is BO as well, so I suppose not end-all.
 
Anyone have a line on ARP 203-4205 studs?

Summit was to ship 6-21 now expected 9-17.

My headgasket kit is BO as well, so I suppose not end-all.
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 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...
 
Installing another turbo at the shop

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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!
 
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 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.
I did the same thing and need to fix it stat. Does the clamp go over the blanket or no?
 
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.
With an 'atmospheric' wastegate, (No idea if this is the correct term but as opposed to electronically controlled by an ECU) and provided the turbo can sustain the higher shaft speed, the MAP will be constant as elevation increases/air density decreases.
 
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.
 
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?
 
…I can’t tell — is that sarcasm or a serious warning?
No v-band nor worn clamp band should go over any blanket. All blankets (turbo, downpipe, wastegate) are held by either springs or stainless safety wire. There is no ambiguity.

Please post pic of what you are trying to do.
 
No v-band nor worn clamp band should go over any blanket. All blankets (turbo, downpipe, wastegate) are held by either springs or stainless safety wire. There is no ambiguity.

Please post pic of what you are trying to do.
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
 
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
I still don’t get where a clamp on the blanket *could* be needed 😳
 
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