Starting my build
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Starting my build
Here's my situation. I currently own a 1989 7.3 with a banks kit, 4" exhaust, cranked stock pump, home made cai and a few other things. The way it sits it will pull pretty hard on a stock 7.3, and I've already pissed a few cummins guys off, but I still want more.I have began to accumulate parts. And will start when I have more time this winter. Here is what I'm throwing into the mix:
Dps head studs (already have)
2001 super duty intercooler (already have)
Fass lift pump (already have)
R&d 110cc ip
R&d stage 1 camshaft
Here's my question, when will my turbo become a limiting factor? Any guesses on what hp I could expect from this build? I'm guessing I'm 230 ish the way I am right now. Any other suggestions?
Dps head studs (already have)
2001 super duty intercooler (already have)
Fass lift pump (already have)
R&d 110cc ip
R&d stage 1 camshaft
Here's my question, when will my turbo become a limiting factor? Any guesses on what hp I could expect from this build? I'm guessing I'm 230 ish the way I am right now. Any other suggestions?
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Joined: Aug 2010
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From: Northern Arizona
Your turbo will definitely be the limiting factor with the 110cc if it isn't already with the turned up 7.3L pump. Depending on the efficiency of your turbo, exhaust, and driveline loss you can expect to see anywhere from 2.3 to 2.7 hp at the wheels for each cc of fuel delivered. With an efficient turbo you should be very close to 300 hp at the wheels. Looking at your list that is the one component that is inadequate compared to everything else. I am starting a very similar build to yours, and went with a Borg Warner S360 hybrid .85 A/R T3 S200 frame hot side. I am pretty excited to see how that combination works out. But yeah. You are definitely going to want a better turbo. 
Postmaster
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From: Northern Arizona
https://www.ford-trucks.com/forums/1...1ve-turbo.html
Lead Driver
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Ive looked into a vgt as well, without a controller it would be a pita to drive imo. Will be interesting to see what that turbo will do, anderson thinks it still has some more in it with a 90cc. My revised build is much the same as yours, except for a better IC slightly lower compression (was already milled .015" when it was rebuilt" R&D pipes and something like a S360.
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Hmmm the one I have is from a 6leaker. I doubt I'll take that road just throwing it around haha. What about a stock 7.3psd turbo with a few upgrades? I don't know a ton about turbos but I know I'll need to learn for this build
Lead Driver
Joined: Apr 2008
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You would be way money ahead to just buy a turbo rather than trying to make one work from a 7.3 PSD. You can get a BW box turbo for like $600 brand new.
Would be really neat to use one, If you could control it even with springs or a wastgate, i would try it.
Would be really neat to use one, If you could control it even with springs or a wastgate, i would try it.
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Okay I'm thinking along the lines of a bw s400. I can handle the exhaust side of things, however never doing any turbo swapping, how would I adapt the oil system?
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Lead Driver
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400 is way too big a 366 is already too big. Unless youre running 200+cc of fuel and turning 4500 and only looking for top end, a 400 will be all but useless. A 366 would work decent with your stock turbo in a compound setup however. if you are looking at BW, a S360 or S362 are going to be close to ideal.
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Joined: Aug 2010
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From: Northern Arizona
That's a pretty good price, but it really depends on the A/R of the hot side. That will make the difference between spooling and not. Also the S300 frame hot side is not T3 iirc, and won't be a bolt on to your banks kit pipes if that was your plan. That's why I dropped the coin to have an S200 hot side with a .85 A/R and a T3 flange machined to fit the S360. I am thinking it will move plenty of air for the 110 plus have decent response. Read through Justin's thread, I believe he was running a 362 for a while...
Lead Driver
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362 would be a good turbo for 110, might be a little laggy, but will have plenty of top end. Thats what im debating currently... S360, or S362/363. Probably has the .88 or .91 T4 housing but you might get lucky and it has a T3 on it. You would want the .91 T4 housing if possible. An 093 hotside can be machined for the S300, justin has / can get them new, he also has my outlet, which is for sale, but thats up to him, whether he still has it or not and/ or wants to get rid of it. That way you will be wastegated and will bolt to your up-pipe.