38r vs h2e vs ???????? - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 87 (permalink) Old 01-02-2010, 02:48 AM Thread Starter
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38r vs h2e vs ????????

i'm looking for a turbo for my 03 ford crew cab, 238 hybrids, matt's tuning, straight pipe 4 inch turbo back, 6637 intake, stock auto trans, 38 toyo's on 18's, 4.56 gears, i talked to a guy that builds turbo's for a living and said that the 38r was a waste of money, the h2e was better but not that much better, i need your guys advice so that i can spend the money right the first time and not be throwing money in the toilet, my truck is a daily driver/ weekend warrior, any input is greatly appreciated thanks
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post #2 of 87 (permalink) Old 01-02-2010, 02:56 AM
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Re: 38r vs h2e vs ????????

The 38R will drop in without a problem, the H2E is a great turbo but its going to be a different setup and a lot of changing in the engine compartment.

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post #3 of 87 (permalink) Old 01-02-2010, 03:00 AM Thread Starter
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Re: 38r vs h2e vs ????????

so which one is better???? or should i have a custom one made???
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post #4 of 87 (permalink) Old 01-02-2010, 03:04 AM
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Re: 38r vs h2e vs ????????

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so which one is better???? or should i have a custom one made???
What is your budget? that will tell all and be real with what you intend to use the truck for.

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post #5 of 87 (permalink) Old 01-02-2010, 03:08 AM
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Re: 38r vs h2e vs ????????

Do you still have PMR's in your truck? I would worry about those before getting carried away with a charger!
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post #6 of 87 (permalink) Old 01-02-2010, 03:09 AM
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Re: 38r vs h2e vs ????????

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Originally Posted by addison View Post
i'm looking for a turbo for my 03 ford crew cab, 238 hybrids, matt's tuning, straight pipe 4 inch turbo back, 6637 intake, stock auto trans, 38 toyo's on 18's, 4.56 gears, i talked to a guy that builds turbo's for a living and said that the 38r was a waste of money, the h2e was better but not that much better, i need your guys advice so that i can spend the money right the first time and not be throwing money in the toilet, my truck is a daily driver/ weekend warrior, any input is greatly appreciated thanks
The 38r is definetly NOT a waste of money... It is probably the most proven turbo for performance under 500 hp. The h2e is also a great turbo, though more costly to covert to. I have NO IDEA what that guy was talking about as far as what a good turbo is for a 7.3, maybe something he is rebuilding and selling??? Can't go wrong wither either the 38r or h2e, depends on your funds and really what you goals are. BTW, your going to need trans attention with running those injectors with either turbo. Good luck

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post #7 of 87 (permalink) Old 01-02-2010, 03:25 AM
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Re: 38r vs h2e vs ????????

You have another issue you need to consider which will greatly effect which turbo you use and your ultimate power level:


You have a 2003 7.3 L powerstroke which means your engine uses PMR connecting rods. They will not handle the power like the old forged rods will. They are perfectly fine for their intended stock use but not so much when you want to start added tons of power. Most consider 400 RWHP the max they can handle. Given that the 38R can easily push enough air and clean up enough fuel to surpass those power numbers I can;t see you needing anything more, that is, unless you do plan pulling your engine to swap out your rods. Go with a bigger turbo and fuel and chances are at some point you will end up dumping your bottom end all over the road. Or you will have to keep it tuned down and thus are wasting money on potential you can not use. We are lucky to some great guys doing tuning now that understand the PMRs and know how to create tunes that greatly reduce the pressure on these rods and still get good amounts of power at he same time: Matt, Johnathan @ Swamps, Beans, Bill etc....

Given that 238 80s with a 38R with supporting mods can get you to knocking at the door of 500 HP I can not see the value in spending a good sum of extra money going to a Hypermax type kit setup to be able to use the various other turbos out there, again, UNLESS you have plans to eventually pull the engine and swap out he rods. If you plan to do that the engine can be kept tuned down so you don't loose your bottom end until you do the upgrades. Even with the 38R 238 80s you will have to keep it down some as it has the potential to add power beyond what the PMRS can handle.

Looking at Turbos of even greater perf is overkill given the PMRs. The 38R and 238 80s seem to be a proven combo. The 238's can be tuned all the way down to stock and also cranked way up to 500hp levels. They also can be tuned to give better mileage than stock and very smooth idle and great streetabilty for a DD.

I am sure others that have tons more experience than I with real hands on time with the various combos can steer you to the best setup to achieve your goals.
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post #8 of 87 (permalink) Old 01-02-2010, 03:34 AM
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Re: 38r vs h2e vs ????????

I've ran both...... I went faster with a 38r than with the h2e. (1-2mph) But the h2e platform is very nice and there is room to upgrade later. Plus drive pressure are a lot better. H2e's are cheaper to rebuild then a 38r !!!!


FWIW, I dynoed 448hp with a set of 230cc a codes and a stock h2e.......along with a gen3 oil pump

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post #9 of 87 (permalink) Old 01-02-2010, 03:47 AM
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Re: 38r vs h2e vs ????????

Both the 38R and H2E are good turbo's. The 38R is a really fun, fast spooling charger for daily driving and towing. H2E will pull harder up top but is a little laggy down low. I dyno'ed 464 with a 38R, & DI Mini Me's
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post #10 of 87 (permalink) Old 01-02-2010, 05:38 AM
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Re: 38r vs h2e vs ????????

Fwiw I love my 38r its been a great turbo and puts up with all the stuff I throw at it, and I have dyno'd 485 with it and my cass b codes and the truck was only runnin on 7 cyl lol

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