SL55/63/65/R230 AMG: If you have an aftermarket heat exchange and/or pulley/tune on your SL55 step in ASAP




I want to do a pulley and tune soon on my SL55 but we were discussing how the heatsoak and the supercharger shutting off is an issue.
They recently did an E55 with a full exhaust, 180mm LET pulley, LET tune, Kleeman headers. The car broke the bolt on 55k record with 485 whp and 595 tq I believe.
Well when he went to the track he was running right around 185 temps which is right around supercharger shutoff. That owner is going back for a heat exchanger they custom made for him.
But While they were under the car installing my cm030 pump the SL has a smaller heat exchanger than the e55 does stock.. which obviously helps the e55 get better power, etc. In addition because of this the heat exchanger that they made for the E55 won't fit on the SL. Well I live 12 minutes from the shop so we are looking to prefab something for me. And they are hoping to be able to sell H/E to the whole community if it can work out.
So as we were going over the car, and possible locations, the SL is really cramped compared to the E55.
So my question is: If your SL55 has a heat exchanger what kind is it, and what are the dimensions and where did you fit it?
Question 2: For the guys with SL55s who have a pulley and tune, where do you live, what pulley size, and do you have issues with the supercharger shutting off? I dont want to do a pulley/tune and freakin have the supercharger shut off ever other WOT burst, etc.
I am interested in what you guys come up with; and subsequently what you have available. I'm in MD not too far from NJ so that helps...does your shop specialize in mb's ...got a link to their website?
thanks




I am interested in what you guys come up with; and subsequently what you have available. I'm in MD not too far from NJ so that helps...does your shop specialize in mb's ...got a link to their website?
thanks

not really all that done on the site, but you can call then from the number on the site. they are a sponsor here.
im talking about the heat exchanger not the intercooler. the heat exchanger isn't as wide on the SL like the e55




I am interested in what you guys come up with; and subsequently what you have available. I'm in MD not too far from NJ so that helps...does your shop specialize in mb's ...got a link to their website?
thanks

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I think for the average enthusiast who wants to enjoy his car, it is entirely possible to improve the performance of these engines, keep them reliable and not get crazy with modifications and costs. However, there are guys that want to drag race, etc., that are going to require a bit more work.
Using a 180mm pulley will absolutely require the use of improved cooling, whether you live in AZ or AK. Frankly I am surprised that they weren't able to get more power. I don't know who writes their software, but with the increased boost that is being made because of the 180mm pulley, their software should mate to the level of boost and take advantage of it. If the software isn't right, the car will bleed off much of the boost
We do all of our pulleys custom for each client, depending on what they want, and we write software accordingly to work with the particular level of boost that the pulley will generate. Generally speaking, in my experience. 172mm seems to be the area where above that there are cooling problems, and below that, there aren't.
If there aren't cooling issues, the SC will not shut off.
Improving the SL55's cooling is also real easy: just mount a second heat exchanger under bumper and connect it in series with the first one along the lines of the W220's cooling setup. More info here: https://mbworld.org/forums/3453069-post25.html
If your guy thought the SL55 heat exchanger was small he must have mis-measured it. No big deal. Stuff like that happens. In particular if he was attempting to measure the HE from underneath the car he might not have realized how tall it is.




Improving the SL55's cooling is also real easy: just mount a second heat exchanger under bumper and connect it in series with the first one along the lines of the W220's cooling setup. More info here: https://mbworld.org/forums/3453069-post25.html
If your guy thought the SL55 heat exchanger was small he must have mis-measured it. No big deal. Stuff like that happens. In particular if he was attempting to measure the HE from underneath the car he might not have realized how tall it is.
Also what kind for the 2nd h/e?
Last edited by InTheBenz0; May 18, 2009 at 09:53 PM.
I have a VRP supplemental heat exchanger. It works great but it's not listed on the website so Victor may not be selling them any more.
Improving the SL55's cooling is also real easy: just mount a second heat exchanger under bumper and connect it in series with the first one along the lines of the W220's cooling setup. More info here: https://mbworld.org/forums/3453069-post25.html
If your guy thought the SL55 heat exchanger was small he must have mis-measured it. No big deal. Stuff like that happens. In particular if he was attempting to measure the HE from underneath the car he might not have realized how tall it is.
I read your post, are running the OEM pump? I'm extremely impressed with your numbers regardless, but even more so if that is the case.
Much appreciate the info!
Pictures of the EVOsport setup on an SL55 as well...
-m





