Duramax Diesels Forum Truck of the Week
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Old 06-11-2018, 07:10 AM
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Default Ball bearing turbos?

Time to upgrade my s366 and I'm wanting a ball bearing Garrett turbo. Anyone on here running one? Or have one for sale? The gt4294r is what I was looking at. I have dual pumps and 75 percent overs.

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Old 06-12-2018, 01:53 PM
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Found a PPE 40942 kit for a good price. If I can sell my S366 kit I'm gonna try it out

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Old 06-13-2018, 09:44 AM
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The only thing BB turbos hate is shitty, dirty oil. Keep them fed with clean good lube and the durability should be great.
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Old 06-13-2018, 07:08 PM
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I have been impressed with how fast a ball bearing turbo spool. I am looking at going ball bearing in the near future.
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Old 06-13-2018, 07:14 PM
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Quote:
Originally Posted by WisconsinHick1 View Post
I have been impressed with how fast a ball bearing turbo spool. I am looking at going ball bearing in the near future.
I want a gtx4088r but my wallet is opposed the the idea. Gonna give this 4094r a try.

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Old 06-13-2018, 07:19 PM
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I'd offer my GT4088R but that's a step back in HP potential..

I did kill one with coolant in the oil..
Definitely like them alot
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Old 06-13-2018, 07:25 PM
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4094 runs hotttttt...
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Old 06-13-2018, 07:53 PM
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Quote:
Originally Posted by WisconsinHick1 View Post
I have been impressed with how fast a ball bearing turbo spool. I am looking at going ball bearing in the near future.
X2. My gtx4508r 80mm valley turbo spools way nicer then my old s472. But it also sucks when a turbo grenades and sends pieces into the Garrett. Could not buy just the compressor wheel.
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Old 06-13-2018, 08:02 PM
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Quote:
Originally Posted by NC-smokinlmm View Post
4094 runs hotttttt...
Hot as in egt wise or hot as in good? It only flows a couple lbs per minute more than my 366 and way less than a S369sxe. Not sure if I'm making a wise choice but then again I have dual pumps and 75% overs on a stock bottom end lb7 so wise choices is not my forte

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Old 06-14-2018, 03:55 AM
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Quote:
Originally Posted by Bustedknuckles View Post
Hot as in egt wise or hot as in good? It only flows a couple lbs per minute more than my 366 and way less than a S369sxe. Not sure if I'm making a wise choice but then again I have dual pumps and 75% overs on a stock bottom end lb7 so wise choices is not my forte

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Old 06-14-2018, 04:34 AM
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Ran a 4094R for a few years with +50 sticks and stock pump. Spools quick, but as mentioned, it's a bit tight on AR and runs hotter than a stock VNT.

In my application it was holding things back at 3600r and 700hp. I'd rate it at arround 600hp max. Shaft end play is substantially greater on thee roller bearing units, but never effected anything that I could tell.
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Old 06-14-2018, 04:54 AM
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Quote:
Originally Posted by kidturbo View Post
Ran a 4094R for a few years with +50 sticks and stock pump. Spools quick, but as mentioned, it's a bit tight on AR and runs hotter than a stock VNT.

In my application it was holding things back at 3600r and 700hp. I'd rate it at arround 600hp max. Shaft end play is substantially greater on thee roller bearing units, but never effected anything that I could tell.
This one has a .95 AR exhaust housing, my 366 has a. 91?

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Old 06-14-2018, 07:01 PM
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Quote:
Originally Posted by Ne-max View Post
X2. My gtx4508r 80mm valley turbo spools way nicer then my old s472. But it also sucks when a turbo grenades and sends pieces into the Garrett. Could not buy just the compressor wheel.
Yeah that is the bad part is you can't get parts and no one else but Garrett can work on them.
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Old 06-14-2018, 07:11 PM
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Quote:
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This one has a .95 AR exhaust housing, my 366 has a. 91?

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Something to do with compressor map if I remember, you have to push the shit out of them. 1600 plus at the end of a 1/4 mile run is totally normal with one.
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Old 06-14-2018, 07:47 PM
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A stocker with max effort tuning will be hotter then that. Can't be scared. Lol
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