gt4294/stock compounds? - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 28 (permalink) Old 12-07-2010, 09:08 PM Thread Starter
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gt4294/stock compounds?

I recently bought a wastegated GT4294 journal bearing turbo with a 1.28ar turbine housing and a t6 flange. I am pretty sure i'll have to get a 1.01 ar housing but hey, it was only $350! Anyway, I have done a lot of research and have found people using 38r's but im going the poor man's route. Id like to use my stocker in my late 99. I am going to go with 250/100% sticks to hopefully run it. Im even going the poor man's route there too! I am getting salvaged B code barrels and plungers and will try to get the rest of the parts from rosewood. I thought I could maybe get some helpful advise from you guys and maybe some constructive criticism, which im sure i'll get! Haha! I know its all a big undertaking but I have the equipment and skills to confidently do it myself.

Other mods include- custom tuned ts 6 pos chip, 4in exhaust, napa6637 intake, 140v idm, head studs, springs, full set of guages, diy fuel system, traction bars, and a built 4r100.



Pics of similar setups would be awesome!
Thanks guys in advance.
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post #2 of 28 (permalink) Old 12-07-2010, 11:50 PM
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Re: gt4294/stock compounds?

I feel like a compound setup with a 42 as the big guy might be a waste. Few guys on here seem to have figured out how to get it to spool with proper tuning. Unless you are planning to use this setup in the future with a charles like setup.
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post #3 of 28 (permalink) Old 12-08-2010, 12:02 AM
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Re: gt4294/stock compounds?

Everything I have gone through the 42 is no where near big enough for a atmosphere turbo in compounds. need like 80mm+ turbo. Just run the 42 with the small housing by itself.

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post #4 of 28 (permalink) Old 12-08-2010, 12:39 AM Thread Starter
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Re: gt4294/stock compounds?

Hmm. Ok. I was just thinking it might be too laggy without it. I want it to be a good dd too.

Chris
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1987 Mazda B2600 rclb with 2.3l 4D55T turbo diesel 4x4 5 speed manual trans. Being worked over with Irate magic. Nick named The Beast.

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post #5 of 28 (permalink) Old 12-08-2010, 12:50 AM
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Re: gt4294/stock compounds?

That stock turbo will grenade itself anyway, they arent really made to handle that kind of flow or be force fed just run the 42 alone, or run it as the smaller one and get like and s480 to feed it.

Renegade Diesel
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post #6 of 28 (permalink) Old 12-08-2010, 01:03 AM Thread Starter
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Re: gt4294/stock compounds?

Hmm. Ok. Well, I could just run it single with the small housing. Anybody got any ideas on how to mount this thing? Its huge! I was thinking a remote mount where the battery is. Its better than beating in the firewall or cowl. That and easier to work on.



...... Hahahahahaha! Too small.... That thing is huge! Hahahahahaha!!

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post #7 of 28 (permalink) Old 12-08-2010, 01:12 AM
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Re: gt4294/stock compounds?

when you get the smaller exhaust housing just get one with a t4 flange and get a mount kit from carson

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post #8 of 28 (permalink) Old 12-08-2010, 01:47 AM Thread Starter
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Re: gt4294/stock compounds?

Yeah, if Im going single then i'll get a T4(which is harder to find than I thought). I think ill build my own mount though. If I have the ability to build something myself I would rather do that.

Chris
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08 Kawasaki Brute Force camo 4x4- AMR 730xx big bore kit and bunch of other stuff. Nick named Excessive Force!!
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post #9 of 28 (permalink) Old 12-08-2010, 01:52 AM
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Re: gt4294/stock compounds?

Quote:
Originally Posted by vanderchevy18 View Post
Yeah, if Im going single then i'll get a T4(which is harder to find than I thought). I think ill build my own mount though. If I have the ability to build something myself I would rather do that.
Much cheaper if you can.

Renegade Diesel
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post #10 of 28 (permalink) Old 12-08-2010, 01:53 AM
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Re: gt4294/stock compounds?

IMO no way I would think it's worth all the fab work plus wastegates etc. The stocker will not last any time without being gated to keep under control.


While the journal bearing small 42 may not spool as fast as a ball bearing version a few guys are running them and state they spool plenty fast with a proper housing and tuning. The 42r version are quite popular turbos to running as singles. I would see about getting the opinions from these guys and their advise or other with hands on experience.

I would think your best bet would be to sell off the 1.28 T6 and replace it with a 1.01 or maybe a 1.15 T4 divided housing. Then you will need to fab up or buy a mounting and hook up kit. Oil feed and return lines. With good tuning I woudl bet it will spool up and lit much better then you think it will. Again hopefully the guys that are running this turbo will chime in.
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