603 crossover tube into an intercooler... - PeachParts Mercedes-Benz Forum

vstech · #1 10-23-2012, 08:04 AM

I recently purchased a small transmission cooler, to get some fittings for my truck... the cooler is only about 6" long, and 3" wide... I was wondering if I could use it for a water to air intercooler...
I figure a hole machined into the crossover tube to fit the cooler in, and an aux pump attached to a small radiator, and fill it with antifreeze mixture... no?
I think the back pressure could be an issue. also, I didn't think it would be a large enough surface area to significantly reduce the charge temp...
what say you experts?

Simpler=Better · #2 10-23-2012, 03:01 PM

I'm SURE you have a least 2 spare temp gauge lying around, you could get all official with it and report back

vstech · #3 10-23-2012, 11:10 PM

Hmmm. I kinda wanted some performance enthusiasts opinions before I hack into a crossover tube... I have a parts 602T I can cut up, and create a box with... I guess I can rig up some temp readouts at the mounting point of the intake, and go get some stock readings, then mount up my mess and see what it does...

Simpler=Better · #4 10-24-2012, 08:24 AM

(For the 617) I know that Rudolf welded an A/W IC core into a W115 intake and ran that

oldsinner111 · #5 10-24-2012, 12:09 PM

I'm getting a intercooler for my 617 from a Nissan.It should be better with colder compressed air.I've seen intercoolers from other vehicles for $50.I was going to use a 4 cylinder radiator.

tjts1 · #6 10-24-2012, 02:44 PM

You should read this.
Diesel Intercooling
Considering all that, I think I'm going to stick with water meth injection (mostly water actually) to cool the charge.

vstech · #7 10-25-2012, 06:12 AM

Quote:

Originally Posted by tjts1

You should read this.
Diesel Intercooling
Considering all that, I think I'm going to stick with water meth injection (mostly water actually) to cool the charge.

all the article says is Diesel intercooling requires better air flow, and water/air can't be in the heat soak zone...

Simpler=Better · #8 10-25-2012, 08:38 AM

I see the point of the article, that diesels ought to be just fine without intercooling (which they are) but that can only go so far for stock applications. For performance, you definitely want an intercooler.

tjts1 · #9 10-25-2012, 11:20 AM

Quote:

Originally Posted by Simpler=Better

I see the point of the article, that diesels ought to be just fine without intercooling (which they are) but that can only go so far for stock applications. For performance, you definitely want an intercooler.

Exactly, front mounted and very very large. Not going to happen with an OM603. Water/air mounted on top of the engine is going to suffer from the same heat soak issues.

vstech · #10 10-27-2012, 08:05 PM

the heat soak issues the article is discussing are on the reservoir/heat exchanger, not the intake charge heat exchanger... if the reservoir/heat exchanger is large enough and in the cold air stream, it should work fine.
mostly the article is on trucks operating at full throttle/heavy loads. these cars are in boost above 2K with the fuel pressed...

oldsinner111 · #11 10-28-2012, 11:48 AM

Pardon me Guys,I have a M104 engine,it has a crossover tube also.I noticed my tube got hot from the rocker arm cover.So I insulated it from heat,with a new cold air setup and insulated exhaust also,crossover stays cool.If I had a diesel I would add that too,if it had a crossover.

124Mike · #12 05-07-2013, 08:05 PM

this thread is kinda outdated but once you cool the charge it is popular to provide added fuel to take advantage of the temperature drop. Fatten the timing 2 degrees or re nozzle the pump might yield a few HP.
In stock configuration you may notice a drop in fuel economy as diesels prefer heated charge for volumetric efficiency ratings and volatility of the fuel. Turbo compensates for this issue as many have found the intercooler is for extreme racing engines and adds only a bit of performance in the street.

Cheers, Mike

vstech · #13 05-13-2013, 06:05 AM

hmmm

dieseldiehard · #14 05-14-2013, 12:20 PM

Quote:

Originally Posted by 124Mike

this thread is kinda outdated but once you cool the charge it is popular to provide added fuel to take advantage of the temperature drop. Fatten the timing 2 degrees or re nozzle the pump might yield a few HP.
In stock configuration you may notice a drop in fuel economy as diesels prefer heated charge for volumetric efficiency ratings and volatility of the fuel. Turbo compensates for this issue as many have found the intercooler is for extreme racing engines and adds only a bit of performance in the street.

Cheers, Mike

Mike,
1) what data do you have that says adding fuel to a cool charge adds HP? a heated charge is actually less air, because cool air is more dense than hot air. Think of hot air balloons

2) If an intercooler only adds a bit of performance as you claim, why would MB be putting intercoolers on new turbo diesels including the W210 diesels, the diesel G-wagon, the W208 CLK, the CDI diesels, heavy duty diesel trucks, and gas engines with turbos as well? Intercoolers are a worth while addition to a turbo anything.

I suggest adding anything besides Nitro or water injection is a waste
and will only make smoke.
Supercharger - Wikipedia, the free encyclopedia
DDH

compu_85 · #15 05-14-2013, 03:14 PM

I own 3 intercooled turbo diesels. My 99.5 Jetta has a small, side mount intercooler and will run intake air temps about 20*F above ambient. The F350 has a front mount... not sure what that runs offhand.

The 2012 Passat has an air-water intercooler... and I haven't found where it reports intake air temps in the computer. It has an extra electric water pump (a tad larger than the one MB uses on our cars for the HVAC - VW uses this same pump on some of their cars for cool down after engine shutoff).

I'd love to do an intercooler on my SDL, and was looking at things that could go where the factory crossover pipe are. The issue I see is clearance with the hood... I don't think there's much space there

-J