Need help with high EGT - Ford Powerstroke Diesel Forum
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post #1 of 8 Old 07-04-2014, 04:58 PM Thread Starter
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Need help with high EGT

I have a 1997 F350 crew cab 4X4 auto Tran with gauges, replaced down pipe, 4" exhaust, intercooler, shift kit, baby swamped injectors, upgraded intake, 6 position chip from swamps, large Tran cooler and pan. When I changed the injectors the bearing was ou of turbo so I replaced with a dominator from little power shop.I only get 5-7 pounds of boost and get are 1200 degrees at 60 pulling 5 wheel 15000 lbs. Any ideas how to fix. No leaks or plugged in exhaust.
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post #2 of 8 Old 07-04-2014, 07:05 PM
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post #3 of 8 Old 07-13-2014, 11:16 AM
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assuming your D66 still has the 1.15 housing, swap it out for a 1.0 housing. the usable RPM range is better, boost is built sooner, and EGTs are cooler. you may need to work with you turner as well

also check for exhaust and boost leaks

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post #4 of 8 Old 08-15-2014, 04:30 AM
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EGT's

What's a D66 ? I have an F350, dually. Improved intake, DB tuner, Improved exhaust. My EGT's also run high, although not quite as high as Bearhunter's. I'm looking at a Water/Meth injection from Snow. It's kinda pricey at $850. Do you think there's enough bang for my bucks ? I tow a big 5th wheel camper of about 13-14,000lbs. I'm gonna be spending a couple of months in and around the rocky's this summer and I want to deal with this stuff prior. What's your advise ?
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post #5 of 8 Old 08-15-2014, 04:54 AM
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Jim, the D66 is a modified l99-03 stock turbo.
Check all areas for boost leaks whether it be on the hot side or cold side. I wouldn't mess with the water meth system. One thing to do to lower your EGT's is gut your turbo exhaust housing by removing the butterfly valve in there. Known as the exhaust back pressure valve. It'll lower about 100-200*

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post #6 of 8 Old 08-15-2014, 06:18 AM
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The d66 is also a modded 94.5-97 turbo isn't it?

What year is your truck the jimS

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post #7 of 8 Old 08-15-2014, 08:38 AM
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The d66 is also a modded 94.5-97 turbo isn't it?

What year is your truck the jimS
yes it is, the 94-e99 is more common to find on the interwebs, but shops modify both the obs and late 7.3 turbos. I shouldve been more specific. Its a modified stock compressor housing to accept a stock 38R compressor wheel.

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post #8 of 8 Old 09-02-2014, 03:05 AM
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Your boost might be a bit low.

However, you did not say what axle you have and the rpm's at 60 mph you are at.

A 15000 pound trailer will create lots of stress, especially at too low an engine speed. You probably are well over the maximum gross weight specified for your truck.

I considered the water/meth, but found it would take a lot of the mix to do much good when towing heavy.

Last edited by Airstreamer67; 09-02-2014 at 03:18 AM.
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