Benzworld.org - Mercedes Benz Discussion Forum - View Single Post - who wins 0 to 60, 1/4 mile: SLK32 or 1997 Cobra Mustang cab, with the indicated mods:

**Shane** · 04-25-2004, 08:52 AM

I speak from experience, since I raced many factory cobra sc's with my SLK32.
Ok, first off, and most important, is driver. The Cobra guy must know how to shift quickly, and launch the steed. The SLK32 guy must turn off the traction control and air conditioning compressor and let the car do the rest. SLK32 owner should race from a stop as he "odds are good" will have an advantage here regarding initial traction. SLK32 guy should do practice race starts beforehand to see what works best. SLK32 has the upper hand here, it is up to the owner to make the most of it.
Now on to modifications. The Cobra has the upper hand here. SLK32 will get approx 40 rwhp from Renntech ECU and pullies. That is it. 20 rwhp more if he does the renntech cams. Cobra can get much more than this depending on the amount of boost chosen by the owner through his choice of pullies. Renntech wants the car to have some longevity. The aftermarket ford suppliers could care less. So more boost! So the Cobra can produce more power, and judging from your friend's estimation probably does. Please keep in mind most aftermarket companies, renntech not included, exaggerate their horsepower numbers for better sales.
Now Cobra convertibles are heavy, much heavier than the coupe and the SLK32; convertible ford is around three hundred pounds heavier than coupe. That is roughly 30 horses taken away. So here is an advantage to the SLK32. Also, ALL cobras farall on their face after 135mph due to gearing and barn door aerodynamics. So race a mile long race or something. You will devastate even the fastest Cobra above 150mph as the SLK32 is still in the meat of gearing and powerband, while the cobra is not and has horrible aerodynamics to boot.

And holy cow, you said a '97 Cobra didn't you! Aw crap. Well, everything holds true what I said about the SLK32, and the cobra as well regarding gearing and aerodynamics.
You will kill it. I have raced aftermarket supercharged 32V cobras too.
6psi will not be enough to compensate, unless he has a sneaky pete system. Either way if he wins, he'll deserve it, cause his car motor gonna boom muy pronto. Yours will not.

This is what I get trying to type early in the morning after a long night of partying and drinking. Ugh my head hurts. Although I think I sold a few passengers on a 745i's speed capability last night. At least no one got sick, although they did get sauvignon blanc on their shirts. Not on the car.

04-25-2004, 08:52 AM	#4 (permalink)
Shane Lifetime Premium Member Date registered: Aug 2002 Vehicle: Education is the ability to listen to almost anything without losing your temper or your self-confid Location: To be social is to be forgiving. Posts: 12,486	Loads of variables here... I speak from experience, since I raced many factory cobra sc's with my SLK32. Ok, first off, and most important, is driver. The Cobra guy must know how to shift quickly, and launch the steed. The SLK32 guy must turn off the traction control and air conditioning compressor and let the car do the rest. SLK32 owner should race from a stop as he "odds are good" will have an advantage here regarding initial traction. SLK32 guy should do practice race starts beforehand to see what works best. SLK32 has the upper hand here, it is up to the owner to make the most of it. Now on to modifications. The Cobra has the upper hand here. SLK32 will get approx 40 rwhp from Renntech ECU and pullies. That is it. 20 rwhp more if he does the renntech cams. Cobra can get much more than this depending on the amount of boost chosen by the owner through his choice of pullies. Renntech wants the car to have some longevity. The aftermarket ford suppliers could care less. So more boost! So the Cobra can produce more power, and judging from your friend's estimation probably does. Please keep in mind most aftermarket companies, renntech not included, exaggerate their horsepower numbers for better sales. Now Cobra convertibles are heavy, much heavier than the coupe and the SLK32; convertible ford is around three hundred pounds heavier than coupe. That is roughly 30 horses taken away. So here is an advantage to the SLK32. Also, ALL cobras farall on their face after 135mph due to gearing and barn door aerodynamics. So race a mile long race or something. You will devastate even the fastest Cobra above 150mph as the SLK32 is still in the meat of gearing and powerband, while the cobra is not and has horrible aerodynamics to boot. And holy cow, you said a '97 Cobra didn't you! Aw crap. Well, everything holds true what I said about the SLK32, and the cobra as well regarding gearing and aerodynamics. You will kill it. I have raced aftermarket supercharged 32V cobras too. 6psi will not be enough to compensate, unless he has a sneaky pete system. Either way if he wins, he'll deserve it, cause his car motor gonna boom muy pronto. Yours will not. This is what I get trying to type early in the morning after a long night of partying and drinking. Ugh my head hurts. Although I think I sold a few passengers on a 745i's speed capability last night. At least no one got sick, although they did get sauvignon blanc on their shirts. Not on the car. __________________ "Dave, this conversation can serve no purpose anymore. Goodbye."