an update,
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Posting Guru
Joined: Apr 2008
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, the reason why i see the psd turbo performing the same if not better is cause it has the same size exaust housing that the ats turbo kade for the idi's has
Senior User
Joined: Mar 2004
Posts: 358
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i have talked to that other guy and looked at his pictures, and i think there is a comprimise in his design, he used a non wastegated turbo which has the 1.15 a/r exaust housing im using the wastegated one which has the .84 exaust housing, the factory ford turbo has a .82 exaust housing, that other guy also has an intercooler and some wierd intake hat thats bound to leak and lots of up pipe, im trying to make my up pipes as short as i can, and im also going to try to rap them in header rap if i get the money, i think this turbo will work rather well, and i think with the huge compressor housing it will make plenty of low end boost but i gues we will all find out when i get the system hooked up to were i like it, but i just want to get things perfect the first time that way i dont have to go back and change it later
I'm looking at swapping back to the sidewinder.
Good Luck with it. Your engineering may be better than my local 'genius' who did the exhaust work.
Post Fiend
Joined: Nov 2003
Posts: 21,285
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From: Nutter Fort, WV
Actually the smaller A/R on the wastegated turbo will work much better I do believe.
As far as the Power Stroke and IDI differences, a motor with 7.3 liters of displacement is an engine with 7.3 liters of displacement, IDI or Power Stroke makes no difference.
7.3 = 444 C.I.
6.9 = 420 C.I.
So the 7.3 to 6.9 is 24 C.I. different in displacement, no big deal and the higher compression ratio of the IDI will more than make up for that.
How well it works is going to depend on how well it flows from the manifolds to the turbo and how much heat the exhaust looses before the turbo.
The next thing is how well you can get the exhaust from the turbo out with as little restriction as possible.
As far as the Power Stroke and IDI differences, a motor with 7.3 liters of displacement is an engine with 7.3 liters of displacement, IDI or Power Stroke makes no difference.
7.3 = 444 C.I.
6.9 = 420 C.I.
So the 7.3 to 6.9 is 24 C.I. different in displacement, no big deal and the higher compression ratio of the IDI will more than make up for that.
How well it works is going to depend on how well it flows from the manifolds to the turbo and how much heat the exhaust looses before the turbo.
The next thing is how well you can get the exhaust from the turbo out with as little restriction as possible.
Senior User
Joined: Oct 2003
Posts: 247
Likes: 1
From: KY
I agree, the truck should spool that turbo just fine. The .84 exhaust housing will really let it spool it fairly well. I am running a Garret Turbo off of a DT466 on my truck and I can get over 5 psi in the driveway by just revving the engine, and Mine has a .82 AR exhaust housing and is very similar to the power stroke turbo. If you want a turbo with a lot of low end look for a Holset HY35 but you might want to run a large external wastegate to make sure that you vent enough exhaust gas to keep the EGT's down. An HE351cw would even be a good turbo for a lot of low end boost, but I would reccomend that you have a well functioning wastegate to go with either of these turbos unless you like blowing headgaskets.
