what's the stall speed for the torque converter?

 

yeah, i know you've said that a few times, i still cannot get it to lauch better that way then not powerbraking.

 

Does powerbraking screw up your brakes?

 

Dragon: What we found worked best on C32, was slightly powerbraking to 1000 rpm and releasing the brake pedal at the same time as smoothly flooring gas pedal. This technique kept our 60ft time in 2.0 range.

Generally, every 0.1 sec reduction in 60 ft. time will show up in ET reduction.

The key is to find what works the best for the particular tire, tire pressure, weather and track surface conditions.

 

Not that it accounts for the original poster's time but I think all cars of the same year, make and model have some inherent variation. Some have more HP and and some have less. Within some given tolerance, this would be normal acceptable manufacturing deviations. Of course we all hope we get the 'hot one'.

Rgds,
Norm

 

I thought the same thing. At least I'm getting my car dynoed prior to adding the Kleemann upgrades.

 

no.

the reason for powerbraking is to get the engine into the powerband before the car starts rolling. similar to rev'n the engine b4 u drop the clutch for manuals. it is the balance of finding the right traction with the right amount of power without stalling the engine, or in an automatic's case, stalling the torque converter, that is most difficult.

 

Dragon: Go to Silver State Motorsports.

http://www.silverstatemotorsports.com/home.htm

They are in Vegas. Ask for Mike.

Tell him you from Vadim.

He will take care of you.

They have a Dynojet.

Your C55 should be in high 290s on RWHP.

Good Luck!

 

Thanks Vadim!!! That's great to know. I'll call him today. Hopefully I can get in there this week, so I can have my car picked up sometime next week for transport to Kleemann, Colorado.

 

wow thats like the Ml55 1/4 time.

 

Thanks for your contribution... LOL

 

Well I went and visited your friend Mike. I had my car dynoed this morning. Forget the high 290s, it produced 307.27 RWHP with a max torque of 328ft/lbs. on the DynoJet. Now it is quite clear that I didn't run a 14.2 because my car is producing a lack of power, but rather the conditions (elevation, heat, tire pressure, not turning off ESP, etc.) Thanks for recommending Silver State, I feel much better about my car and plan to go through with the Kleemann mods.

 

Dragon, my pleasure.

307 RWHP / 328 RWTQ. Good numbers, so far C55s we have dynoed stock were in high 290s / 315 TQ.

Kleemann mods should put you at over 450 RWHP / 490 RWHTQ.

Have fun!

 

Thanks again.... and your friend Mike wanted me to tell you "hi".

 

Wow! Sweet #'s indeed! Sounds like you have one of the "hot" C55's! I'd like to see what mine dynos at someday.

When you decide to mod it via Kleeman, will you attempt the NOS setup like BennyZ (even though his is Renntech)? He said it's a big money saver. I don't know how you feel about a big can of NOS in your trunk though. Keep us posted.

Nick

 

I had a grin ear-to-ear when I saw the dyno graph. I will not run NOS. With the C55 running a 11:1 compression ratio, I think running NOS is just asking for trouble with forced induction. Plus, I don't think I'll need it. My car will be putting out close to 550 hp. Benny did the supercharger only. He opted to pass on the headers, lsd, and full exhaust (exhaust probably doesn't add much anyway, more for sound). Me on the other hand, I'm adding a complete exhaust with headers and I'm also getting an LSD. This car is going to be sick when it's done (3-4 weeks). The car is slated to be picked up early next week. BTW - Brandon at Kleemann USA in Colorado is just flat-out awesome!!!! He's knows his **** and is a straight-shooter.

Here's a couple of the dyno-charts from this mornings run at SilverStateMotoring. Why they elected to use a 4200RPM to redline data sample, who knows (perhaps their inexperience in working with MB's... this was a total Ford/Chevy place). I was in a hurry to get back to work, so I didn't question it. I'll have much better dyno graphs after it gets back from Kleemann.