Don't laugh at me, but I'm looking at diesel truck intercoolers to use as an upgrade to my 1st generation DSM.

I was wondering if anyone has tested a duramax intercooler, and has numbers such as pressure drop and airflow. I realize that it's size helps it become efficient, but It's only 1.5" thin, and that makes me worry about airflow.

My goal for my dsm is to achieve 400whp. The motor is built to handle it, and I'm going to run a Holset H1C turbo off of a cummins dodge, so I'm going to need a good intercooler that cools enough to let the holset give me 400 horsies.

Any help is appreciated.

Whats a DSM? Motorhome?

Whats a DSM? Motorhome?Mitsubishi.
Looks like hes going to use the intercooler for a eclipse/talon. I miss my DSM sometimes :)

1.5 PSIG pressure drop@ 28 PSIG post CAC @ 25C

BTW stay away from the HY or H1
Go for the HX series 35 or dodgezilla hx53/40 combo

1.5 PSIG pressure drop@ 28 PSIG post CAC @ 25C
Ya what he said...:confused: lol

got juice... Thanks!!!!! that's almost perfect for what I need..

for those who aren't familiar with a "dsm", it's a 1990-1993 Eclipse/Talon/Laser, a 1994-1997 Talon, and 1994-1999 Eclipse. The name means "Diamond Star Motors", which was a joint venture between chrysler and mitsubishi. It started in 1990, and ended in 1993, but the cars after '93 shared a similar platform and the same engine, so they are 'considered' to be a dsm also.
I've got a 1990 talon that I'm building up.

I'm goin' with the H1c because it's a tame version of the hx35, and I only have 2 litres of displacement to spool it. There's a company that makes a bolt on mitsubishi style turbine housing that fits the holset hx35 turbine wheel. Since the h1c has the same turbine as the 35, I'm gonna get it instead. There have been a few guys who put down over 500 whp with a hx35 at 20 psi, and that's more than I want.. a h1c running at 15-17 psi is gonna do me good. Plus, those with an hx35 in the mitsu housing start to spool at about 3500, and get full boost at about 4800 rpm.. :) :)

I gotcha.... mind you , you will have to mod the BEHR intercooler a bit. Too high for a Mits 3G engine compartment

BTW, i had a friend decide his timing belt was good for 30K Mi.... lol... did you know they are a 'contact' engine

yeah.. That's the only downside to the engine.. It would be near perfect if it had a chain instead of belt, or if it was a non-interference engine. I put 1mm Oversize stainless valves and high compression pistons in mine, so that makes my valve-to-piston clearance insanely unsafe. I have another car to drive, so if my talon busts up the valves, i'll still be ok.. :)

yeah, no matter what intercooelr I get (whether from a cummins, powerstroke, or duramax), i'm going to have to cut it down to make it shorter. I can get away with 15", but anything more just won't fit. I'm also going to have to modify the endtanks to where the outlets come out paralell to the core, as opposed to perpendicular.

This is sort of what I'm wanting my car to look like with the intercooler in. The guy in the picture used an intercooler off of a 2nd gen cummins dodge, only he cut it down to 15" in height, modified his endtanks to fit his piping, and cut away the center part of his bumper cover so more of the ic would be exposed.
http://www.dsmtuners.com/gallery/data/501/184goodfront.JPG

I miss my DSM..had a 90 GSX, ran a 13.8 with a slipping clutch with a horible 60 foot time due to that, would have been pretty quick with a new clutch, blew it up. Didn't have enough in college to fix it, so I sold it. I think a DMAX intercooler is way to large for your DSM and too much of a pain to make it work, just get a spearco unit or something that already fits with no fuss and is cheap. As far as turbos go, if you are not in the low 12's, you are not at the limits of the stock 14B, although I am a HUGE fan of the 20G for those cars, one of our guys had run around an 11 flat with a 20G in a very streetable car..stock longblock...all fuel mods and good driving.

^ I'm in college right now, and I can't afford a spearco or 20G. I'm fixing to buy a holset h1c for 75 dollars from a local, and a mits turbine housing for it for 170. The same guy who i'm buying my holset from said he has a duramax intercooler in perfect shape for 50$.
I have a tig welder, so I can cut it down and make the endtanks myself. Plus, my 14B is blowing oil so it needs to go.

hehe, if I could afford spearco intercoolers and 20g's right now, I wouldn't be on here asking about duramax intercoolers. :) :) So far, I've spent about 1700$ including the cost of the car, and I'm gonna see if I can make it work for under 2k. Who says you can't be fast for cheap? :) hehe

good luck with that, I assume you know the trick to read your O2 voltage through the wire under the dash...using a voltmeter, one more thing to save you some money and make sure you are not lean, those engines have noisy lifters that sometimes cause the knock sensor to retard the timing..and produce egts that seem hotter than they are since the flame front is actually touching the temp probe.

yeah.. I've got a datalogger that tells me everything like o2 voltage and tps and all that cool stuff. When I rebuilt my head, I put in lifters from a 3G that have larger oil holes.
My knock sensor is leaking goo, so I'm gonna have to replace that soon. :(

I have a spare Dmax intercooler if you are interested in trying out. E-mail me at yaomlin@yahoo.com. Was going to try on my Eclipse, but changed my mind and stayed with a small Spearco unit, so far it's at 418whp at 22psi.

The car looks like it has a hairlip. Like one of those bottom feeding whale sharks.

Got Juice, I was guessing that it was more like 3 psi. That is phenomemememallly efficient.

Where do you get numbers like this?

The car looks like it has a hairlip. Like one of those bottom feeding whale sharks.

Got Juice, I was guessing that it was more like 3 psi. That is phenomemememallly efficient.

Where do you get numbers like this?
Measured using an autometer sport comp gauge, one on CAC inlet and one on CAC outlet

Granted, at speed there is a difference in pressure vs density comp air in vs Cac'd air out.
Both gauges were accurate to each other by 1/2 PSIG on a bench.
So as far as accurate to total pressure drop across the core the results are consistent.
BUT if you take into account the tubing bends from turbolader discharge elbow---->CAC-----> to Intake manifold,,, the pressure frop across the system as a whole is more like 6 PSIG at that range.
On forced induction a good rule of thumb is pressure drop of .35PSIG for every bend in the tubing in the system.