how much are they asking for the sc? I misread, I thought it was $2000, lol I wish!

 

I don't believe the SC can support anywhere near 32psi. I believe that is well beyond its redline.

Maybe you meant to type 22psi?

 

My price used to be $1800, now it's up to $3800

 

At 23#s the clutch on the compressor starts to slip. Another 9#s would surely make toast of that.

Let's let Derek respond. I've got to heard where he came up with this.

 

there is a guy on the MBZ forum that made up a special belt tension kit for the SC that allows the m113v8 motor to wind up the SC to very high pressures with out slippage. I posted the thread in the SRT6 fourum. since the m113 are are almost identical to the m112 this could be a viable option for increasing the size of your overdrive pulley

 

The guys name is Victor from VRP. The product he developed is the VRP Extreme Belt Wrap kit. He developed that kit to wrap the serpentine belt around the blower pulley due to the belt slippage—not clutch slippage. If the clutch is going to slip it is going to slip no matter how much tension you put on the belt. Max, I think you really need to stick to topics that you truly understand.

 

But we all know he won't.

 

why not completly remove the clutch all together? seems like the most logical step if your seeing it slipping, it's only there for reducing the SC drag when your not in a high load condition.

 

damn straight boy!

 

i purchased a rebuilt amg supercharger off of ebay for 1,200.00, i'm just waiting for someone to figure the damn electronics out! this is the exact same supercharger that is on the srt.

 

The VRP Extreme Belt Wrap kit looks like it would do the trick for belt slippage.

However,l it would be nice if we could have a dedicated belt for just the supercharger that has teeth (cog type) like on the pro dragsters, etc.
We would have to replace all of the accessorie's pullies with slimer units (are the base or limited model pulleys slimmer)? We would then have to have a custom crank pulley made with a second pully on the outside and have a new longer snout on the supercharger to line up with the new secondary crank pulley.
Obviously we would need a tensioner pulley for this as well.


This would cure both of the SRT6 issues:
1. No more belt slippage - we now have a dedicated cogged belt to the supercharger,
2. More pulley ratios - we could have a strip or race fuel only pulley and a street pulley (supercharger side) for the car in lieu of changing the size of the crannk pulley only.


I am just dreaming here...there are a bunch of things that would need to be figured out to get this to work, but it would be nice!

I guess the thing that bothers me most about the SRT6 is having to pay $900 to $1500 for a pulley(s) to increase the boost...I can see paying $1500 even $2000 to have a setup similar to the one I described above (redesign of the entire pulley setup) that would give flexibility to the amount of boost you can run and eliminate slippage.

If someone is going to go down the path of designing a pulley system, why not design a system that can be flexible and eliminate the manufactures design flaw(s) at the same time. Why purchase two systems that don't completely fix the problem (VRP -eliminates slippage; Larger crank pulley increases boost) neither gives you the chance to change between multiple boost levels.

Excuse me for rambling...I am off of my soap box now!
You all have a great evening!

Cheers,

 

if you don't want to pay $2000 for a pulley it is easily modifed, by machining a ring that fits over the pulley. machine the pulley grooves and buy the new belt. you can DIY it for $300

if your interested I have the blue print for the machining of the N/A pulley into a SC pulley, or mod the srt6 pulley.

 

Thanks Maxwell.

I have a couple of things in mind I want to try first. I really appreciate the offer though!

 

Don't all respond at once.

 

The difference is the blower (drive) method. They are all blowers, but turbo blowers are pushed/turned by exhaust gas exiting the motor. Then that turns the other blower that pushes air into the motor.
There are two kinds of superchargers. Both turned by belts. Centrifigul type, mounts up front like an accessory and uses a round head unit much like the turbo.
The roots/twinscrew positive displacement type have a linear lobe design, and a rectangular housing. And sits on top of the motor
The roots typically comes in lower RPM's and must be limited on speed. But on the CF they use the clutch to bring it in at 3K and the redline controls the top.

The retrofit cost is due to tuning issues. The SRT has a much bigger fuel system and requires the blower clutch control and different timing and fuel maps while under boost. IIRC the NA CF has 17lb injectors and the blown has around 50 ? and that would require a lot more fuel pump volume etc.
HTH

 

Thank you, I appreciate it.

 

I talked with a guy today that had the Kleeman SC kit on his car completed, and you will be pleased to know that Kleeman with reprogramn your ecu to handle the low boost, cost is $1000
so, No more whining about how you cant' boost the N/A crossfire because the bosch ecu won't work, either step up or STFU., you can easily make your own kits for under $3,000-4,000, and another $1000 for the ecu

 

so you are saying that you could piece together your own turbo kit then send your own ecu out to kleeman and they will program it for low boost and bolt it back in and you are good to go? please explain i don't know if you meant they will just do your ecu if your purchase the kleeman kit which is over priced.

 

Kleeman sells thier own Supercharger system, and when you purchase it, your only buying the parts not laybor or the computer remapping.

I talked to one guy this morning and he says, after you install everything you just UPS the ecu overnight and they will recalibrate it for low pressure map and remove the speed limiter so your good for 180mph or however much HP your motor puts out.. $1000 and a one day turnaround. not bad.

I'm talking to a couple other guys locally, I haven't got any response back from Derek's guy who's supposibly a Bosch tuning engineer? I'm in no rush and I know he's probably got bigger fish to fry.
Also waiting on details from a ferrari tuner up near Rosamond CA at Willow Springs, I'll let you know the hourly rates for them. still awaiting response.

 

If you don't hear back from Stewart, (not surprising since most of these guys are contracted by race teams and the season is just starting) call Brian Sakata http://www.sakatamotorsport.com/ Although I will see him at the Rolex 24hr Grand Prix next weekend in Daytona...