Ok I didnt see much searching on this, So on a gas turbo'd car, the better the IC the more power, better meaning less press drop, and better heat exchange characteristics. Would an IC upgrade work on our trucks? Not sure where a bigger, freer flowing IC would fit, but? On some High horse cars and the old Syclones they use a water to air IC. Any benefit of these for our trucks. Just thinking at work at 6am.

 

hi,
I have a nissan 300zx turbo (1988) and don't have an intercooler. reasoning, the car handles the pressure up to about 10 psi or so with out causing a problem. above this you would need an intercooler but you would have to crank the boost up even higher because of the pressure drop. There are significant increases in adding an intercooler. I have noticed that on our trucks the intercooler is very large but haven't noticed the placement of it, front of radiator or behind it, in front of it would be the best location obviously. I'm thinking that a better flowing less restrictive intercooler would be nice to have on our trucks, it would definately help as far as raising boost and keep the detonation down to a minimum. i was told once by a guy at the shop, with the cummins engine, just open her up and let her breathe and you can achieve any horsepower rating you want. lol.

 

I have often wondered if anyone had tried designing an inter/aftercooler thermally connected to an a/c evaporator. Would the loss of power to the a/c compressor override the benefits?

 

I believe the IC is behind all the aux coolers, but in front of the rad. Cant believe I cant say fer sure though. Just got off a 12 hour shift.

 

Correct. in front of radiator & behind aux coolers.

Don't think bigger is as important as better. Factory IC is spec'ed for 30 psi only. Anyone adding HP runs the risk of exceeding pressure capability of factory unit and getting leaks.

Insulation and maybe H2O cooler on air tube from IC to Engine Air Intake might be an idea??

The sled pullers have a 100 psi IC that is slick! More air tubes (extruded honed) and stronger welds at IC inlet & outlet tubes.
Not cheap but less than factory replacement cost and lowers inlet air temps 20-30 degrees.
http://www.haisleymachine.com/PERFOR...20PRODUCTS.htm
RJ

 

I was recently talking to the techs at Cummins about the 4bt's and the 4bta's. On the 4bta, there were actually two different kinds of aftercoolers that were used. Air-to-water (using engine coolant) and air-to-air (aka charge-air cooler.... what we have our trucks). According to the tech, the air-to-water aftercooler was capable of cooling the 450° compressed air leaving the turbo down about 250°. The charge-air aftercooler is capable to cooling the 450° air down to about 200°.

 

I have wondered the same thing myself. That would be an interesting design, a intercooler with the evap lines going though it. If you could get it to work that would be a nice dense cool air.

 

I'm pretty sure Rip at Source Automotive (1 (866) 211-1533 ) offers an aftermarket intercooler

 

I think if you'd would put a temp sender in the air horn you would see the stock intercooler does an excellent job. I have one and it is consistently only 20° higher than the outside temp even at high boost and egts. Having the A/C on makes a difference though.
I have a switch to toggle between pre and post cooler temps and have seen drops of over 250° though the cooler.
Remember air is very easy to cool compared to a liquid.

 

Just a little fun fact but an intercooler is NOT what we have on the Cummins even though thats what everyone, including DC, calls it. Its really an aftercooler. Why, because its after the turbo. An intercooler is also what it name says. A cooler that was placed in between two seperate compressors (turbo or blower) not after. This design was limited to, I believe marine use and or military. The ones who started misusing the term intercooler was Volvo a couple of decades ago. And if you all remember DC has followed in the foot steps of aftermarket modifications when guys where installing intercoolers (I mean aftercoolers) on the older Cummins in Dodges finding out the results were good. As for the intercooler (I mean aftercooler) upgrade, I would rather spend the money on a bigger turbo that puts out more air volume to lower EGT's.
I also remember around 15 years ago Banks trying to get a twin turboed Firebird to cross the 200 mph mark. He ran the intake through a camping cooler filled with ice to lower the intake charge. Kinda cheating there since no one is going to keep stopping at the local mini mart for an ice refill.

 

I finally took out my stock cooler and just in time to test the new PDR (Piers) cooler, testing should begin next week.

Jim

 

Yes, Rip at Sourceautomive.com has a tested a true afermarket intercooler. It has tested a 65 degree drop in temps in the manifold better than the stock unit. Im convinced this is part of his record run in the 11's on Diesel only with a full weight 24 valve.

The price is right and the unit has been tested to 500 PSI without failure at the manufacturer. It actually blew up at 550 PSI!!!!!

That is plenty strong IMO. With the other afermarket intercoolers going to the 100 PSI range and failing....

Don~

 

With a bigger/ better intercooler on a diesel you get some nice EGT drops but don't really gain much if anything in power. It seems like the CTD intercooler is rated to 30psi, but it seems like there are a lot of people with wild setups still running it so unless you have some pretty big BOMBs you probably won't notice much advantage with an aftermarket intercooler.

Remember that not all pressure drop is considered bad, air is more dense when cold so by the intercooler cooling the air there will be a certain amount of pressure drop.

I would think that the coolant would be to hot to cool down the aftercooler like that, unless it was coolant from the cold side of the radiator. As for using the A/C to cool the intercooler, yes I bet it'd work excellent at the drag strip waiting to make your run as it'd keep the intercooler from heat soaking. However for practical purposes I doubt it'd be very, if at all, beneficial.

550psi?!? Jeeze, you'd think after about 100psi they would just call it good, if somebody is running 500psi....

 

According to Cummins it's rated at 50 psi.

 

Oops, I guess that is what I get from trying to learn that on a ad on eBay.

Actually I see the same thing on Haisley's site. "STOCK INNERCOOLER'S ARE RATED FOR ONLY 30 PSI. "