Holset WH1C NPT Source Nipple in Compressor Cover

[95GSTowner]

Yes I searched and was shocked I couldn't find what I need. I picked up a Holset WH1C and it has been tapped for a boost source but the fitting is missing. I will measure the hole for size but my problem is finding the nipple adapters online. I think the reason I'm having a hard time find these is because I don't know the correct term. Thanks for your help

 

[snowborder714]

Search for "hose barb". You can get them in straight or 90° versions and a variety of sizes.

 

[Awd-laser]

I would honestly just remove the compressor cover and take it with you to your nearest hardware store.

 

[95GSTowner]

Search for "hose barb". You can get them in straight or 90° versions and a variety of sizes.

Hose Barb FTW ! Thanks

 

[Archer Fabrications]

Get a 90* it's what comes oem

 

[95GSTowner]

Get a 90* it's what comes oem

Will do, thanks.

 

[JusMX141]

Edelmann #831240 / Weatherhead #1582. I go through them by the boxfull.

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[95GSTowner]

Edelmann #831240 / Weatherhead #1582. I go through them by the boxfull.

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That should work. BTW, it's going to be interesting to see how this turbo performs. The previous owner had this WH1C mounted into an SBR GT-12 exhaust housing. Of course he claims it worked great but I have my doubts. I'll give it a shot and worse case I'll pick up a BEP housing.

 

[JusMX141]

That should work. BTW, it's going to be interesting to see how this turbo performs. The previous owner had this WH1C mounted into an SBR GT-12 exhaust housing. Of course he claims it worked great but I have my doubts. I'll give it a shot and worse case I'll pick up a BEP housing.

Ball bearing GT housings are POOR candidates to be machined to HX turbines because there is a much greater distance between the backside of the inducer tip to the center housing mounting flange on a HX than on a GT. This means that the GT CHRA already sits further into the turbine housing than a HX....so by the time you machine deep enough that the center housing flange fits and seats, the turbine wheel is well beyond the area where the exhaust flow contacts the inducer tips.

A few months back I had a guy send me a H1E for rebuild which kept failing by burning the backside of the inducer tips off and nearly melting a hole in the heat shield. Upon further inspection, the housing had to be machined in such a way that when the turbine was fully seated, the nozzle area of the exhaust flow was completely missing the turbine wheel...aiming right into the heat shield. Basically, it was junk.

Definitely plan on throwing that housing away and getting the correct Bullseye housing at some point.

 

[95GSTowner]

Ball bearing GT housings are POOR candidates to be machined to HX turbines because there is a much greater distance between the backside of the inducer tip to the center housing mounting flange on a HX than on a GT. This means that the GT CHRA already sits further into the turbine housing than a HX....so by the time you machine deep enough that the center housing flange fits and seats, the turbine wheel is well beyond the area where the exhaust flow contacts the inducer tips.

A few months back I had a guy send me a H1E for rebuild which kept failing by burning the backside of the inducer tips off and nearly melting a hole in the heat shield. Upon further inspection, the housing had to be machined in such a way that when the turbine was fully seated, the nozzle area of the exhaust flow was completely missing the turbine wheel...aiming right into the heat shield. Basically, it was junk.

Definitely plan on throwing that housing away and getting the correct Bullseye housing at some point.

I was afraid to hear this but I'm glad I brought it up. I'll post pics of it shortly so you can see how it looks.

Ball bearing GT housings are POOR candidates to be machined to HX turbines because there is a much greater distance between the backside of the inducer tip to the center housing mounting flange on a HX than on a GT. This means that the GT CHRA already sits further into the turbine housing than a HX....so by the time you machine deep enough that the center housing flange fits and seats, the turbine wheel is well beyond the area where the exhaust flow contacts the inducer tips.

A few months back I had a guy send me a H1E for rebuild which kept failing by burning the backside of the inducer tips off and nearly melting a hole in the heat shield. Upon further inspection, the housing had to be machined in such a way that when the turbine was fully seated, the nozzle area of the exhaust flow was completely missing the turbine wheel...aiming right into the heat shield. Basically, it was junk.

Definitely plan on throwing that housing away and getting the correct Bullseye housing at some point.

I took some pics but it was hard to get a clear view of the turbine. All I can say is there is absolutely no shaft play and it spins freely so hopefully it will be fine once i swap it into a BEP housing. I know it's hard to tell by the pics but does it appear that they (TurboLab) somehow made everything line up or is this a recipe for disaster? Thanks again for your help

 

[JusMX141]

Looks like something was welded to the turbo flange of the housing to make it "deeper" than a standard 30R-based housing....the welding to block off the wastegate hole is also pretty interesting.

It appears the machining was done fairly well- the only issue now would be this housing is a copy of a 7cm2 (.49 a/r) DSM housing....so any concern about the .55 a/r centered-volute BEP housing causing surge or not flowing well enough would be an even greater concern with this housing.

 

[Archer Fabrications]

The weld in the flapper hole looks more than just interesting. Looks like bird shit

 

[95GSTowner]

I didnt realize it's a .49 ar so im on the search for a used BEP housing. If i cant find one in soon then i'll buy it new. Thanks again for your help

 

[Macspsi]

This thread makes me want to send my turbo lab 20g to Justin for inspection. That wastegate plug is horrible if they have that detail on what the eyes can see imagine how things could be in the inner workings of the turbo.

 

[JusMX141]

The weld in the flapper hole looks more than just interesting. Looks like bird shit

My welds aren't much better- I just meant that it would've been easier to find something to plug the hole first (an old flapper, perhaps) then weld around that instead of literally piling weld into the hole.

Although I'd try to get rid of some of the slag from inside the housing visible in this photo before using the turbo:

 

[95GSTowner]

My welds aren't much better- I just meant that it would've been easier to find something to plug the hole first (an old flapper, perhaps) then weld around that instead of literally piling weld into the hole.

Although I'd try to get rid of some of the slag from inside the housing visible in this photo before using the turbo:

Yeah after you chimed in i decided to not use it in the current housing and will swap in a BEP housing

 

[Archer Fabrications]

I got my .55 bep from BEP WITH crap mig welds with pieces of wire sticking out of the end of each bead. Had to fix it myself with the TIG

 

[JusMX141]

You bought it from Bullseye like that, no middleman?

Bullseye definitely has a tig...I've bought housings which came direct from BEP and had the wastegate actuator lever hole welded shut by obvious-tig.

 

[Archer Fabrications]

Maybe it was from extreme psi

 

[95GSTowner]

Just ordered a brand new .55a/r BEP housing. I'm still curious how well this frankenstein gt12 housing would have worked on a manual trans but I'm not going to risk it. When I met the previous owner he told me the reason he stopped using the turbo was because he couldn't build boost on launch. He said it's because he has an auto and is on the stock converter. That sounds like a legit possibility but I believe it's also because of this crappy housing. If anyone wants to test it out I'll let them have it for free, just paying shipping.

 

[Seamus]

Not that I'm some turbo lab lackey, but he said it was rebuilt by them, he didn't spwcify they did the wastegate or machine the housing.

And to jusmx, what are some of these guys thinking. I can see overlooking the turbines position when you are cutting you first housing on your first attempt, but you'd think if you have enough senses to physically build a custom turbo like this, than you'd realize the is sure when you seat the chra to the housing.

 

[95GSTowner]

Not that I'm some turbo lab lackey, but he said it was rebuilt by them, he didn't spwcify they did the wastegate or machine the housing.

And to jusmx, what are some of these guys thinking. I can see overlooking the turbines position when you are cutting you first housing on your first attempt, but you'd think if you have enough senses to physically build a custom turbo like this, than you'd realize the is sure when you seat the chra to the housing.

As I stated earlier in the thread, I bought it used so I'm going from what the previous owner said. With that said, I don't know if they rebuilt the turbo but I was told Turbo Lab did machine the housing. I don't know who welded the wastegate but by the looks of it my guess would be the previous owner. All-in-all I gotta say I'm impressed that Turbo Lab was able to pull it off. He told me he had a spare GT12 housing plus a WH1C and he called them up, asked if it was possible to make it work and they did. He claims he boosted it to 18 PSI fine and that it spooled quickly. I have never tested it myself and I just swapped the turbo into a brand new BEP housing.