Any chance on getting help selecting a turbo upgrade for a diesel?
 

I'm wondering if anyone here could help me in picking out an upgraded turbo for my truck.

It's a 1994 Ford F250 7.3L IDI turbo diesel, not a powerstroke.

There are limits to what you can do with the turbo due to the 21.5:1 stock compression, and 15 psi is the max boost you really want to run.

I can't remember what redline is...I think it's somewhere around 3500 RPM.

The stock turbo on the truck is a T3/T04B hybrid with an H trim compressor, .70 AR housing and T3 Stage III turbine wheel in a .82 wastegated housing, and it's non intercooled. I'm currently running 10 psi. Top end on the engine sucks. My tach is broken at the moment so I don't actually know what RPM's I'm getting boost at.

The stock turbo is not too bad but I personally would like to upgrade to something with a slightly larger compressor and a larger turbine wheel.

I've looked at some compressor maps and although I'm kinda having a hard time getting a very accurate lbs/min figure (I have no idea what the VE of the engine is, or intake temp), it looks like something around a 60 trim T04E would be ideal for mid to top end power, and probably either an O or P trim turbine.

Just a couple questions to start out with and will add more later I guess. First off, any turbo suggestions? Second, is a Holset H1C or HX40 a viable equivalent? Does anyone know what AR a 16cm holset turbine housing is roughly equivalent to?

Depending on what turbo I use, I may have to find a way to incorporate an external wastegate, I dunno.

Re: Any chance on getting help selecting a turbo upgrade for a diesel?
 

hx50

Re: Any chance on getting help selecting a turbo upgrade for a diesel?
 

I'm pretty sure an HX50 is too big, from what I've seen...I can't run a huge turbo on this thing like Powerstroke guys do.

Re: Any chance on getting help selecting a turbo upgrade for a diesel?
 

he was talking compound

Re: Any chance on getting help selecting a turbo upgrade for a diesel?
 

hmm hx50 is good for my 1.8l honda, but not for the 7.xl ford... comon... run that big bitch and keep the boost at 13psi..

Re: Any chance on getting help selecting a turbo upgrade for a diesel?
 

i heard 14bs go well on diesels

Re: Any chance on getting help selecting a turbo upgrade for a diesel?
 

That tends to be the case when you don't have ignition timing to play with...
Don't get a turbo that takes forever to spool, your top end will still suck, and your low end will too

Re: Any chance on getting help selecting a turbo upgrade for a diesel?
 

That idi, is kinda fragile. I would just leave it as is. It seems to me someone does a compressor upgrade, but in the idi it is hardly worth it. Even the early powerstrokes, I would be leary to add much power to.

The cheapest way to get power, is to pull it and drop a 12v cummins in.

Re: Any chance on getting help selecting a turbo upgrade for a diesel?
 

there was a nog back in the day way before the modded diesel fad with a 6.9 ford diesel with big boost and twin turbos putting out 1500 hp and the block flexed so bad it couldn't have frost plugs because it ---- them out. He had big rubber stopers in it, the 6.9 is just a early 7.3. Are you sure they are that fragile?

Re: Any chance on getting help selecting a turbo upgrade for a diesel?
 

Ford made, right?