Turbine size and housing - Ford Powerstroke Diesel Forum
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Old 06-10-2014, 08:13 AM
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Turbine size and housing

I have a 1.15 housing and a 69mm turbine wheel. I ordered a new 1.00housing and its the stock 67.7mm turbine size. Should I try and use the old stock wheel with the new housing, or can the new housing be machined to fit the bigger wheel?
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Old 06-10-2014, 09:38 AM
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how come you want to switch housings? just curious.

and if you want to use the 1.0 housing get it machined to fit the bigger wheel.
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Old 06-10-2014, 12:08 PM
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Quote:
Originally Posted by blue99stroker View Post
how come you want to switch housings? just curious.

and if you want to use the 1.0 housing get it machined to fit the bigger wheel.
Stage 2's and 66mm turbo
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Old 06-10-2014, 12:18 PM
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Originally Posted by blue99stroker View Post
how come you want to switch housings? just curious.

and if you want to use the 1.0 housing get it machined to fit the bigger wheel.
I forgot you were in on that long thread so no need to read it again.

I want boost to come on a little bit sooner than it does now. The only way I like driving the truck with the 1.15 is on 140 tune

If I pull something, the truck lags up hills and i have to make it downshift or it will continually lose speed, or black smoke if it doesnt downshift.
Even without a load it is doggy at cruising speed if I need to pass or speed up. 1500-1600 is my cruising speed and the 1.15 doesnt lite till around 2000-2200.
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Old 06-10-2014, 12:46 PM
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The van turbo has different trim on the ex turbine than the truck turbo. The easiest is to find a new or good used ex turbine shaft from a truck turbo.

Turbine shaft

or here:

Turbine shaft

It's a direct swap to the center rotating housing assembly of the van turbo. Do you have the stock GTP38 yet? If so, just pull it apart and use the turbine shaft from that.
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Old 06-10-2014, 01:04 PM
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Quote:
Originally Posted by Dan V View Post
The van turbo has different trim on the ex turbine than the truck turbo. The easiest is to find a new or good used ex turbine shaft from a truck turbo.

Turbine shaft

or here:

Turbine shaft

It's a direct swap to the center rotating housing assembly of the van turbo. Do you have the stock GTP38 yet? If so, just pull it apart and use the turbine shaft from that.
Thats what the stock 67.7mm assembly is. When I did the 66mm DIY kit, Barder said my .84 would cause bad drive pressure. He said he'd go with a 1.00 or a 1.15. So I went with 1.15. He then told me he was out of the 67.7mm housings in 1.15 and had a 69mm, in which he'd include a matching balanced rotating assembly.
After putting this all together, I am not satisfied with the spool up time. So now I bought a non wg 1.00 housing from Beans and it would likely be the 67.7mm wheel.
So do I put my old wheel back in, or can I utilize this new bigger wheel with some machine work. Is it even worth the hassle to machine it (is there much performance difference in 67.7mm to 69mm turbine)?
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Old 06-10-2014, 01:56 PM
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The 1.3mm difference is a tad over .050....almost a 1/16".

I'm having trouble figuring out what is what here. Are you saying that you have a truck turbine (67.7mm) in van housing (1.15 - 69mm)?

If I was you, and I had the 67.7mm turbine and a 67.7m 1.0 ex housing, I'd run that....In fact that's what I have....I like it WAY better than the 1.15 housing...drive pressure is 1:1....and it will make 33psi of boost with my 160/30's. I wouldn't go through the hassle of machining the 67.7mm housing to accept the 69mm turbine.
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Old 06-10-2014, 02:38 PM
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I have a truck that has the 69mm turbine and the 1.15 - 69mm housing. I have a 1.00 housing that is 67.7mm I want to put on and also have my stock 67.7 turbine out of my .84 housing.
I'll just put the old turbine back in with the new 1.00 housing.
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