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Old 06-16-2017, 01:53 PM
lariat 7.3 lariat 7.3 is offline
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Default wanting to dump 38r

wanting to dump this 38r and jump on the T4 route. Main concern is i want something i wont have to keep my eyes glued to the EGT gauge when i have a trailer hooked up like i do with the 38r. Just always feels like its under the turbo if i let it drop into overdrive if im not doing 70+. See a couple SXE's for sale in the classifieds.

What would you go with based on my sig? 90% a DD 8% hauling 10k+ when a trailer is hooked up, and 2% letting her eat, which is almost never as im afraid to blow up the DD
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2000 F250 ccsb 4x4. 297k miles, Leveled 05 coil spring swap on 20x12 35's, 38r 1.0 housing with turbo master, 238/80% FFD hybrids,T500, Full sinister RR stainless with bowl removed and Dual Bosch pumps. GH tunes on Hydra, BTS DIESELSITE Boots, Autometer C2 series gauges, DIY tymar, remote start. 08 mirrors. dual Fox Resi Shocks
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Old 06-16-2017, 03:04 PM
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PSD POWER007 PSD POWER007 is offline
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364.5 (I have a basb which is close to the same) is a towing beast with 180/80's. I'm considering 238/80's when mine get tired which should be even better I'd think.
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Old 06-16-2017, 03:12 PM
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co04cobra co04cobra is offline
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Price on 38r?
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Old 06-16-2017, 03:33 PM
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An s369 would be perfect for 238/80's

If you plan on jumping up to large hybrids later you could go with an s467.7 with a .90 housing and swap to a 1.10 housing when you move up in injector size.
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Retired - 99 ccsb, s468, 238/200, BTS, Twin Terminator, ARP, 910, RR, Trutrac, 573rwhp
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Old 06-16-2017, 05:26 PM
JDelaney JDelaney is offline
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I think any S300 SX-E is going to be a significant upgrade over your 38R. My 364.5 begins to spool at 1500RPM with 160s and I never have to look at the pyro (towing 12K 5er on DP 80 econo). Has anyone done back to back testing between a 366 & 369?
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Old 06-16-2017, 05:40 PM
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Quote:
Originally Posted by JDelaney View Post
I think any S300 SX-E is going to be a significant upgrade over your 38R. My 364.5 begins to spool at 1500RPM with 160s and I never have to look at the pyro (towing 12K 5er on DP 80 econo). Has anyone done back to back testing between a 366 & 369?
Not a s366sxe vs a s369sxe, just the old box 366 vs an s369sxe, which spools better and flows more. The 66 and 69 sxe's will spool very very close, the 69 will just flow more up top.

That 64.5 is a perfect tow turbo for stock up to 205/30's
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Retired - 99 ccsb, s468, 238/200, BTS, Twin Terminator, ARP, 910, RR, Trutrac, 573rwhp
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Old 06-17-2017, 04:46 PM
Addicted4 Addicted4 is offline
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I'm surprised you even have to look at your egt gauge with small hybrids and a 38r. Matts tuning in a tow tune never breaks 1200* no matter what load I've put behind my truck. Might look at/for boost leaks and what tune are you running in? What gear ratio are you running in the axles?
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Old 06-17-2017, 07:27 PM
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I agree, sounds like the op has a bad boost leak or something else going on.
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Old 06-18-2017, 08:19 AM
lariat 7.3 lariat 7.3 is offline
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Boost leaks have been ruled out, resealed plenums, upgraded boots, international bellowed uppipes etc. 3.73 on the rear end. Unless I'm 2100 rpm or more it'll start falling under the turbo with a load
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2000 F250 ccsb 4x4. 297k miles, Leveled 05 coil spring swap on 20x12 35's, 38r 1.0 housing with turbo master, 238/80% FFD hybrids,T500, Full sinister RR stainless with bowl removed and Dual Bosch pumps. GH tunes on Hydra, BTS DIESELSITE Boots, Autometer C2 series gauges, DIY tymar, remote start. 08 mirrors. dual Fox Resi Shocks
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Old 06-18-2017, 10:33 AM
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Quote:
Originally Posted by lariat 7.3 View Post
Boost leaks have been ruled out, resealed plenums, upgraded boots, international bellowed uppipes etc. 3.73 on the rear end. Unless I'm 2100 rpm or more it'll start falling under the turbo with a load
there's no reason to get rid of the 38r.. you need better tunes or a tow tune..

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