89notchcrustang

Hello all, toying around with the idea of going to the dark side of boost. Now, I want to do a low buck build using as much junkyard parts as possible, I have access to all the welding and fab tools I need at my place of work. I am thinking a turbo from a 7.3 powerstroke or a Dodge cummins. Anyone know what size those are?? I am only shooting for around maybe 350 horse at the wheels, if that, real mild. I would try to use as much piping, couplers and whatnot from the junkyard trucks as I could.

Help me out with some ideas everyone, we'll see where this goes, I'm just brainstorming for now.


Also, would an FMU and a tweecer get me by on a setup like this?? I'm thinking front mount turbo on the driver's side, maybe a PSD intercooler?? or one of the cheaper e-bay ones.

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5point8LiterImportEater

Starting in 94 I believe all the cummins turbos until 02 or 04 are Holset HX35's. A very decent turbo that could be used to make the power you want. It is a T4 flange turbo so once you want to step up further it wouldn't be hard.

As far as junkyard tubing you are just going to have to find some IC pipes and see what comes of it, and if you flip your headers they should be usable as part of the hotside. I don't know how cheap you could go, but pretty cheap, as that Holset turbo is pretty cheap normally. Like 100-300 normally.

Chris

89notchcrustang

Nice, a t4 flange is a bonus, I think the powerstrokes used a smaller one. that way when I did want to step up to an aftermarket unit, the new one would bolt right in. Do know what size that Cummins turbo is??? This is a Daily driven street truck, so I wanna make the boost low & midrange, make it fun on the street.

Right now, I'm thinking = BBK mustang shorty headers 1-5/8", Powerstroke intercooler, or the ebay smaller unit, JY turbo, single 3" downpipe, dynomax bullet muffler, 3" rear exit tailpipe on the driver's side?

The mustang shorties exit at more of a 45* angle instead of 90* like the "L" headers, which I think would help mount the turbo lower and more forward.

5point8LiterImportEater

HX35 I believe is a 57mm wheel. I don't know for sure, but I am thinking that. I will do some investigating later today and get back to you. Yeah, don't use the PSD's, they suck.

The HX35 makes boost at 1000 rpm's on a 360ci diesel. It can't be very far off on yours.

Chris

5point8LiterImportEater

Found something. here is a map of the HX35, what you need to understand is that this map is short for a reason, the 5.9 only revs to 2500 stock and about 3k with upgrades. My mother's reaches 35psi by the 2100 rpm so honestly to use this you should probably take a stock HX35 from a cummins and at the least spend a few bucks and get what they call the 16cm housing. They come stock with a 12cm housing and that is way too small for a gasoline 351. You can get the housing lots of places and it will extend your usable RPM range by a lot.

ANOTHER OPTION. is a HX35/40 hybrid. They put the compressor of the HX35, but get a wheel and exhaust housing from a 40, and they are pretty cheap. I heard it gets cummins guys to around 450 hp and you should be very close to that.



Here is a link to a PDF with a couple of garrett upgrades and the pink one at the bottom of the chart is the HX35. http://www.turbobygarrett.com/turbob...mapCummins.pdf

89notchcrustang

Hmm, I was worried about that, getting a turbo off a straight- six diesel that doesn't rev, that's why I was initially leaning towards a powerstroke one, they are a V8, and rev higher than the cummins.

brainbypass mod

i am using a holset hx60 on my gen 2 build, but that is way too big for what you are looking for.

i would look for an hx40, or you could try twin hx35's...

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03 black turbo lightning - holset hx60 powered

"And another thing.....when I gun the motor, I want the whole world to think it's coming to an end"
-Homer Simpson

lightningkylej

Look on the evo forums. You can pick up EVO VIII turbos for under a $150 each shipped. I have a pair of them for my Gen 2 that will be going on late this summer. The Evo guys make 350-400 at the wheels on the little turbo. A pair of them is perfect for a 5.8, probably have very little lag and give you enough room for improvement when your ready.

89notchcrustang

I prolly already know the answer, but do you NEED an intercooler with lower boost levels?? I am thinking yes for the street, I know guys running superchargers with 15+ psi no intercooler, but I think the turbo heats the air so much more because it is exhaust driven, I saw a mustang with a no I/C turbo setup, man that would make it much easier!

I think we could build an intercooler at my shop, tho, we have built smaller aluminum coolers for little diesels.

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lightningkylej

I would do an air-to-air if I were you. A very nice piece can be found on ebay for about $170 (last time I checked). They are universal ones from XS Power. The local performance shop here in OK uses them extremely frequently with excellent success; i.e. 700 whp of a 2.4L turbo 4 cyl through one of them.


Edit: here is the one that the referenced shop uses frequently.
http://www.xs-power.com/nissan-singl...rcoolers-5.htm

madramper

No, you don't need an intercooler. The intercooler just allows you to run more timing without using better gas. If you do want to get an intercooler, the ebay ones are really cheap and seem to work very well.

89notchcrustang

On a turbo tho chip?? seems like a turbo would heat the air charge waaaay more than an SC, being exhaust driven. It seems like the computer would be pulling a lot of timing on something that's not a dragstrip queen.

I'm still looking for more info on the 7.3 powerstroke Garrett turbos, there is a big diesel performance place here that might even have stock turbos laying around for cheap.

lightningDan

the super chargers make just as much heat i believe, intercooling is a nice SAFE bonus, but look at dennis, hes been running his little blower HARD with no cooler...

ever persons different, if ur gonna break the money to go turbo, might as well intercool it, that way u can use its potential

Guitarbuddy

I don't recomend the junkyard diesel turbo route. I did a rear mount with one from a diesel tractor. Turned out to be an T04E. It would build boost but didn't make much power. The compressor side was way too small for a 5.8.

I bit the bullet and bought a new Turbonetics 62-1 for $900. It is a great size for a stock Lightning engine. Save the money by building the pipes yourself, but get a properly sized turbo.

For me, tuning was the hard part. I used an FMU and it worked ok, but I you have to be careful because a turbo can build boost at less than full throttle while computer is in closed loop. You can get a severe lean situation and blow a hole in a piston. You can change this with Tweecer. I was careful to stay out of boost unless at full throttle but this kind of took some of the fun away.

I would like to try again with the turbo mounted up front on pass side like you're planning. This time I will budget more $ to get it tuned.

Guitarbuddy

BTW, I didn't use an intercooler, but mine was a rear mount and had long tubing that cooled the air some. Also, I kept mine at 8 lb boost.

If I try it again with engine mounted turbo, I will use an intercooler or water injection because I will turn boost up higher.