Renntech does up the Merc McLaren SLR 722
We know that Mercedes used the SLR 722 badge on the SLR McLaren 722 Edition to honor the 1955 Mille Miglia-winning Mercedes-Benz 300SLR of Stirling Moss and Denis Jenkinson, but still. That car, wearing a big "722" on the doors, which indicated their 7:22am start time, managed to beat the favored Porsches and Ferraris back in the day. But people see a 722 on the label and somehow 650 hp doesn't seem good enough. Enter, supertuner Renntech.
Renntech takes the supercharged 5.5-liter V8 that resides in every SLR and adds some of its magic. This time it's a simple application of one of the company's upgraded intercoolers and a new intercooler pump. These revised units have twice the capacity of the stock coolers and reduce temperatures by a full 50 degrees. The result is horsepower that now hits the magic 722 mark. No price is listed for the conversion, but it sounds like it could be a real winner with the few customers lucky enough to have a 722 parked in their garage. We could do without the aftermarket wheels though.
[Source: MotorAuthority]
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Reader Comments (Page 1 of 1)
SteveinVT 5:38PM (4/12/2007)
I just don't get the SLR. It is just F-Ugly to my eyes. Adding more horsepower and chinzy wheels doesn't seem to be much of an improvement....
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Toy Yoda 5:49PM (4/12/2007)
So, all they did was upgrade the intercooler and pump and they bumped up the horsepower significantly. No change to the ECU at all? I'm just curious, cause maybe I could do that to my supercharger kit too.
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Proud Japanese 5:52PM (4/12/2007)
What is there to get about the SLR? It's meant to be a fast car.
SLR vs 599GTB
http://www.youtube.com/watch?v=4GSXZqXU43k
SLR vs Carrera GT
http://www.youtube.com/watch?v=upQblPqeGHI
SLR 1/4 mile @ 11.4
http://www.youtube.com/watch?v=d5hK6g0QGVI
With this bump in HP it will be a 10 second car.
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David 6:07PM (4/12/2007)
"What is there to get about the SLR? It's meant to be a fast car." What has fast got to do with it being poorly styled (and overstyled)? And for a car with an aluminum engine and a composite and aluminum honeycomb chassis, why is the thing so damn heavy, given that it's supposed to be fast. The Mclaren F1 is a much older design that manages to be both much lighter and much faster. Even the Porsche supercar weighs half a ton less.
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Pouya 6:07PM (4/12/2007)
With all of McLaren's and Mercedes's resources, expertise, and a half million dollar plus price tag, you would think they would fit the SLR with the best intercooler imaginable. Nope. How about after the car has been out for a few years and it was time for the tweaked special edition 722? Nope. I'd be pissed. I rather have a Pagani Zonda F.
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pd 6:39PM (4/12/2007)
I'm with #2 on this one, intercooler upgrade yields 72h.p., doubtful.
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big bob 7:59PM (4/12/2007)
Custom ECU programming, special crankshaft pulley, 2 very large intercooler pums. Lots of dyno time. Difficult intallation
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