7.3 turbo boost
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Freshman User
Joined: Jun 2004
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From: Columbus, TX
7.3 turbo boost
I've got a 1994 F250 w/ the 7.3L factory turbo and have read a few discussions on turning up the boost on the turbo unit. How is this done and how do you know how much boost the motor can take before you blow it up?
Also, does anyone have the ATS 3 inch exhaust that is made for this model truck? If so is it worth the money?
Also, does anyone have the ATS 3 inch exhaust that is made for this model truck? If so is it worth the money?
Posting Guru
Joined: Sep 2002
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From: Northeastern Pa - USA
If you dont have experience in the diesel field, leave the boost alone. Ford made the factory system with a default in it so the turbo will only produce so much boost, even is you stand on your head and scream at it. Call ATS and tell them what you want to do and they can fix you up with the upgrades to the factory system. MALCOLM what is your input to this scenario ?
Post Fiend
Joined: Nov 2003
Posts: 21,285
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From: Nutter Fort, WV
I have the ATS 3" downpipe on a 7.3 turbo, a see through muffler, and dual 3" stacks.
There is only about 6 feet of single 3" pipe on my exhaust.
Yes it is worth the money.
I installed a body lift to make room for the downpipe, but mine is an 86.
I get about 13 or 14 pounds of boost with factory settings.
There is only about 6 feet of single 3" pipe on my exhaust.
Yes it is worth the money.
I installed a body lift to make room for the downpipe, but mine is an 86.
I get about 13 or 14 pounds of boost with factory settings.
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Freshman User
Joined: Jun 2004
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From: Columbus, TX
Thanks for the info! This site is great.
Did you get your ATS downpipe from ATS or another dealer?
What would be the best place to order it from?
Where is a good place to get gage kits for boost, trans temp, etc. I know Banks offers a few and I wondering which were the best and available at a good price.
Anyone w/ info let me know. Thanks!
Did you get your ATS downpipe from ATS or another dealer?
What would be the best place to order it from?
Where is a good place to get gage kits for boost, trans temp, etc. I know Banks offers a few and I wondering which were the best and available at a good price.
Anyone w/ info let me know. Thanks!
Post Fiend
Joined: Nov 2003
Posts: 21,285
Likes: 15
From: Nutter Fort, WV
I bought a reman motor that had the ATS turbo on it. It came with a complete Walker 3" exhaust.
The stock turbo Ford used is an ATS turbo, the outlet flange was changed to a 2.5" elbowed thing that does not flow well. I understand ATS has the stuff you need to fix it back to what it was before Ford fixed it.
Do a search on the internet for pyrometers and boost guages. I have and like the Isspro color coded one. Mine is pre turbo, right in the back of the exhaust manifold.
The stock turbo Ford used is an ATS turbo, the outlet flange was changed to a 2.5" elbowed thing that does not flow well. I understand ATS has the stuff you need to fix it back to what it was before Ford fixed it.
Do a search on the internet for pyrometers and boost guages. I have and like the Isspro color coded one. Mine is pre turbo, right in the back of the exhaust manifold.
Posting Guru
Joined: Oct 2003
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From: Monroe, WA
You really need to upgrade the exhaust to do any turning up on that engine. ATS can hook you up with the exhaust and castings you need to fix it up right. They recomend you set it up to around 8 psi, that's the amount they say is just enough to burn the fuel without over boosting. Factory setting should be around 6 psi. You can go higher (like 10+), but they say it will actually slow you down some.
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Freshman User
Joined: Jun 2004
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From: Columbus, TX
Yes ATS makes the factory Ford turbo for my model and there is a 2 1/4" exhaust outlet installed on it by Ford. With ATS's full replacement exhaust you get a 3" exhaust outlet, 3" pipe, and a muffler. This setup runs around $300 and is supposed to provide a good power increase. ATS also makes a larger turbine housing for the turbo.
Banks makes a 3 1/2" exhaust system, but it doesn't replace the small Ford outlet and it costs $480.
If there are any other good exhaust systems out there let me know.
Also does anyone know how useful an intercooler would be and who makes one for 7.3 turbos?
Banks makes a 3 1/2" exhaust system, but it doesn't replace the small Ford outlet and it costs $480.
If there are any other good exhaust systems out there let me know.
Also does anyone know how useful an intercooler would be and who makes one for 7.3 turbos?
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Posting Guru
Joined: Oct 2003
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From: Monroe, WA
Sounds like you already have it all figured out. Call ATS and get the exhaust coming. Stay away from Banks. Then you can turn up the pump and wastegate and see what ATS designed it to do. Should gain you around 45 HP in all the right places.
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Freshman User
Joined: Jun 2004
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From: Columbus, TX
Thanks for all the great info. Now all I have to do is save the money to buy everything. Until then I'm thinking about takin off the muffler and running it straight piped. Do yall have any idea how this would effect performance or milage. I'm not touching the turbo until I get the ATS kit and guages.
Thanks again!
Thanks again!
Post Fiend
Joined: Nov 2003
Posts: 21,285
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From: Nutter Fort, WV
A muffler is just extra weight that holds you back.
My muffler is like a 14" piece of 5" pipe necked down to 3" on both ends, you can see right through the entire diameter of the pipe.
Sounds and breathes much better.
My muffler is like a 14" piece of 5" pipe necked down to 3" on both ends, you can see right through the entire diameter of the pipe.
Sounds and breathes much better.
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Freshman User
Joined: Jun 2004
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From: Columbus, TX
I finally got a chance to cut the muffler off and straight pipe my truck this weekend. It sounds good, not as loud as I expected, and seems to run a little better. I like the sound though, especially now that I can actually hear the turbo whisling.
Now I have to see if my milage improves.
Now I have to see if my milage improves.
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