will an after market intercooler really lower E.G.T. 150*?

 

Thats what the magazines say...LOL.

 

i know on a friends pulling truck a spearco it is hot enough to burn you if you touch the inlet. but you can lay your hand on the outlet and its warm but not near as hot as the other side. when i swap my cam i will have one!!!

 

We have seen as high as a 250deg drop in inlet vs outlet with our intercooler. Stock truck you might not see a big difference, but anything over 350hp sees a big benifit.

 

I really didn't see any real egt's difference between the stocker and spearco. The flow thru the intercooler is way better but a stock truck would be difficult to see. I would guess that I dropped any where from 100 to 150 deg's, but that could have been from fixing the a nagging air hole that I had in the stock intercooler. I feel that my mid range power comes on stronger and sooner with the new ATS manifold and new spearco intercooler. The immediate spool-up was a bit slower than the stocker (there more area to fill up than the stocker). The spearco is about 1/2 to 3/4in thicker than stock. The spearco also uses cheap interclamps and they are 3in diameter. I still don't know why its called an intercooler by all rights its really an aftercooler. Most people call intercooler when they are installed between your compressors and call it an aftercooler when they are after the compressor. Guess that its a diesel thingy.

 

Be an aftermarket thing. Look at Cummins designations. 6bta, the A stands for aftercooled.

 

so is the green spent in a better place with my mods? I E a timing set? I am at stock timing.

 

Do you have to buy an intercooler? You have a big hole in the stocker? If you don't I would say no. Camshaft or methanol/H2O spray will cool off the engine more than the an intercooler mod. Its still a nice mod but a pricey mod. Sorry I sit on the fence. Don't get me wrong, I can tell the difference but thats after 30+psi of boost. Under that, maybe. Its abit of work to put it into the truck. I had to redo my air tube from my turbo to the intercooler as I don't run a stock turbo set-up. You will have to adjust your bumper location and the air condensor is very close to the corners on the hood. Its a beautiful looking intercooler/aftercooler and is well designed.

 

The timing is definitely something that should be done to help the truck out either way. The intercooler will also help out with the turbo you have. It cools off the air coming out of the turbo. The cooler the air is, then denser it is. The denser air is, the more you are putting into your engine, the better it runs. A camshaft doesn't change the density of the air, it just changes when the valves are open, and how long for. A cam will allow for more air to go in, but if it is heated air you are still not getting the full benefit of your "aftercooler"

 

I agree with Pat its helps but I felt it was a minor change to how my truck performed. I had to buy a new intercooler. The spearco is slightly more $$$ than the stocker. The biggest benefits will achieved if your planning on putting in a high boost turbo. If you under the 40psi mark, and looking for a big step change in performance, you might be disappointed. If you call spearco, they will tell you the same thing that I just did. BD is the only shop that guarantees a 200 to 250 deg'F drop in egt's, from my knowledge no one else makes the same claim as they do.

 

If you tow that's where you'll see the most gain. Seen a 250 deg drop towing 8000 lbs up a 6% grade. 0-70mph you might see 100 degrees or so depending on your fueling.

 

ya I tow every day, if I could get my egt's form 1350 to 1150 while pulling hills,I would be very happy. if towing is where they shine then it would help me a lot

 

I would bump the timing up to 16 degrees and power wash out the current rad and intercooler pack. Check all your boot clamps and boots for holes, tighten up the intake manifold. I would be surprised if you got the temp drop as advertised for the CAC, the other limiting factor is air flow across the cooler and also ambient conditions. I mean I would also love a 250 deg drop, but I have hard time coughing up the cash for the CAC when the OEM is still good.

 

I would also disagree with the Cam argument. Changing the valve opening events will dramatically affect EGT as not only are you affecting when the air gets in, but also how the exhaust gets out. The change in overlap timing (when intake and exhaust are both open) will dramatically affect the amount of scavenging the cylinder receives. Less residual exhaust lowers firing temps and ultimately EGT by a huge margin. In dream world, If both the CAC and the Cam were the same cost, I would jump on the Cam swap in a heartbeat... The cam will also affect mileage significantly, for the better.

 

Did your coolant temperature go up or change much?

Jim