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7.3L IDI Diesels (Not Power Strokes) Technical discussion of topics related to vehicles powered by the 7.3 Liter In-Direct Injection Navistar engines.

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Old 02-29-2008, 07:34 AM   #1 (permalink)
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94 IDIT upgrades

Good morning folks, Have been looking into upgrades for my 94 IDIT. Some say that an intercooler is not needed for our low pressure turbos. I would like some input into if this is entirely true. Also how does the "collective" feel about water/meth injection? BTW the reason for the upgrades is towing my Bronco for 4wheeling. The truck(bronco), trailer & spares weigh out @ 9900lbs. I already have a performance inj pump installed. It flows enough fuel to put my EGT's way high. I have seen 1200 F on some hills & backed out of the fuel to keep her safe. The upgrades are for towing performance only. THX in advance Rick
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Old 02-29-2008, 05:12 PM   #2 (permalink)
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From posts around your entry time on TDS there were posts by travis re water/meth injection and home made..... well 1 motor later the cat was out of the bag....... if you want to do it use a tried and true KIT....... Propane is another KIT you can get to increase power....... powershot 2000.
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Old 03-01-2008, 11:41 AM   #3 (permalink)
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Good morning folks, Have been looking into upgrades for my 94 IDIT. Some say that an intercooler is not needed for our low pressure turbos. I would like some input into if this is entirely true. Also how does the "collective" feel about water/meth injection? BTW the reason for the upgrades is towing my Bronco for 4wheeling. The truck(bronco), trailer & spares weigh out @ 9900lbs. I already have a performance inj pump installed. It flows enough fuel to put my EGT's way high. I have seen 1200 F on some hills & backed out of the fuel to keep her safe. The upgrades are for towing performance only. THX in advance Rick
Hi, I'm a new member. Recently I started putting an intercooler setup on my truck. Intercoolers are a good thing to have no matter the boost level. There is a loss of boost if you intercool because it takes the boost you have and cools it. The cooler the boost, the denser the oxygen particles are. Having a cooler intake tep also lowers the exhaust temp too. Also, you can make up for the loss in boost by turning up the turbo a little. Therefore making more power.

As for water methanol injection, I am putting the Snow Performance kit on my truck. That would be good to lower your exhaust temperature. Not only does it lower your exhaust temperature but it also cools your boost and adds methanol which is an additional fuel. That also increases the power. The water/ methanol kit would also be perfect for towing.
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Old 03-01-2008, 02:24 PM   #4 (permalink)
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pete--that was because travis admitted to running TWICE as much water as russ had originally----i seen the original setup of russ's---russ never had any problems-----russ said later he thought that travis was putting out the fire--and the water was lightly hydroing the engine---hence the cracked pistons he experienced-----
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Old 03-02-2008, 11:42 AM   #5 (permalink)
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Hey there Pete , Your post confused me. I think you mentioned a home made water /meth kit. I would go factory made. Also the question remains about the effectiveness of an intercooler on our low boost engines. Yes the truck was bought to have most of it's time with 10K on her butt. This is where I would like to improve upon. THX much Rick
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94 F250 7.3Turbo IDI, 5spd, 4X4, Extcab, 242km. New International motor @ 239km, Champion Diesel turbo injection pump, Jacobs brake, Powershot 2000 propane kit, new injectors, glows & return line kit, coolant filter & AC / heater mod.
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Old 03-04-2008, 09:27 AM   #6 (permalink)
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Does Pete still live here?
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94 F250 7.3Turbo IDI, 5spd, 4X4, Extcab, 242km. New International motor @ 239km, Champion Diesel turbo injection pump, Jacobs brake, Powershot 2000 propane kit, new injectors, glows & return line kit, coolant filter & AC / heater mod.
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Old 11-27-2008, 09:43 AM   #7 (permalink)
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Good morning folks, Have been looking into upgrades for my 94 IDIT. Some say that an intercooler is not needed for our low pressure turbos. I would like some input into if this is entirely true. Also how does the "collective" feel about water/meth injection? BTW the reason for the upgrades is towing my Bronco for 4wheeling. The truck(bronco), trailer & spares weigh out @ 9900lbs. I already have a performance inj pump installed. It flows enough fuel to put my EGT's way high. I have seen 1200 F on some hills & backed out of the fuel to keep her safe. The upgrades are for towing performance only. THX in advance Rick

Hey, seems like this therad is kinda old but that what I found in google.

My qeustion is about the insurance of IDIT. I checked the site and and I don't get the connection 7.3 Liter?
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Old 11-27-2008, 11:08 AM   #8 (permalink)
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What? Insurance?
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Old 11-27-2008, 11:38 AM   #9 (permalink)
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Intercooler do work well on our motors. Look at the science side of compressing air (a gas). The molecules of the gas or air in this case bounce off each other creating heat as a by product. When the air charge is heated you loose power. Anything above around 12 lbs of boost is wasted because the air temp is up around 300 degrees. The intercoolers will cut the temp in half and the charge is denser so more air is jamed into each stroke. Add propane or water-methonel or both and you will see great gains but... Don't go overboard on any. The motor must be in great shape. Head studs are a must. As posted, Travis went outside the envelope and found out what happens but give the guy credit for trying. I like somebody like that ... Somebody thats in the game and will take a calculated risk to show results. The first landing on the Moon only had around a 23% chance the engines would fire and they could lift off... Now thats courage....
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