Paxton Supercharger 10lb pulley
- Thread starter PJJP
- Start date
Paul Hawker
Enthusiast
Tread very lightly on increasing the stock Paxton output without beefing up your internals and driveline. The stock Paxton comes very close to being the maximum output while still being very reliable.
ILLSMOQ
Enthusiast
sounds very interesting...Doug Levin has answers to this, give him a call
Yes. Minimally you will need to change out your pistons. And, as stated above, give one of our sponsor tuners a call. Doug's in Florida. Dan Cragin is in California.
ILLSMOQ
Enthusiast
what you'll "need" to do depends on your tune.
ILLSMOQ
Enthusiast
I have a "conservative" tune.....With the stock pully I saw low 11/high 12 AFR. With the 10 pound pully I see mid 11's on a warm day and 12.0's on a colder day.
Data logging with the LM1 wide band
Data loggin with the split second R4 program
here is a pic of the pully
not much to look at...but the trained eye can pick it out as I found out last night. I was hoping to keep this one a secret for a while but, Mr 2002 GTS ACR knows his supercharged vipers pretty well
Data logging with the LM1 wide band
Data loggin with the split second R4 program
here is a pic of the pully
not much to look at...but the trained eye can pick it out as I found out last night. I was hoping to keep this one a secret for a while but, Mr 2002 GTS ACR knows his supercharged vipers pretty well
ILLSMOQ
Enthusiast
oh and I run a 50/50 mix of 100/91 octaine or better...
black mamba1
Enthusiast
Does that higher octane mixture actually help? Going to too high an octane can actually hurt power if u dont have the c/r to take advantage of it....flame propagation may not have enough time to reach its optimal temp. U done dyno's with and w/out this mixture?
ILLSMOQ
Enthusiast
We drive these things pretty hard out here, I'm willing to give up some HP for some added safety.
This is the fuel mixture I run in this car...so yes, all of my dyno runs with the SC have been with this fuel...I'm due to dyno it again...currious to see if I break the "700" mark.
This is the fuel mixture I run in this car...so yes, all of my dyno runs with the SC have been with this fuel...I'm due to dyno it again...currious to see if I break the "700" mark.
Yep, he made up his loss to me with the pulley and 3:55 gears. Now he edges me out, where I had him pretty good before. And when his lighter rotors get here next week, he will definatley leave me behind. My reign was short lived, oh well, guess I need a pulley now too.
ILLSMOQ
Enthusiast
Yep, he made up his loss to me with the pulley and 3:55 gears. Now he edges me out, where I had him pretty good before. And when his lighter rotors get here next week, he will definatley leave me behind. My reign was short lived, oh well, guess I need a pulley now too.
any bets as to who pops a motor first???
ILLSMOQ
Enthusiast
If you intend to make this pulley change you may want to look into switching over to the ati damper as well. The stock damper is not that strong and quite a few have had them break or crack. The smaller pully will put more stress on the stock damper. Doug urged me to swap the damper and I had reason enough to change it just from reading posts on this site about the stock one breaking.
One thing worth noting on the ati damper.....it needs to be machined for the SRT timing cover. If it is not machined it will make contact with the cover and that could be a problem. I ended up getting the pully, belt and damper from Doug and the roe crank pin kit from roe racing. When I installed the parts I saw what Doug ment about the necessity of machining the damper. Everything fit perfect.
call Doug.
ILLSMOQ
Enthusiast
no...that is even smaller....the one I got was about 1/4" smaller in diameter....something like 3 11/16ths"
ILLSMOQ
Enthusiast
yes, he machined the damper.
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PJJP,
Paxton Supercharger 10lb pulley "Anyone running this?" Yes.
"I saw it on the racing solutions web site. will this put me over the limit for the stock bottom end?" Yes. Pistons would be a minimum. I'd go to forged rods too.
Mike and ILLSMQU,
At 10 lbs max boost, one or the other of you will likely pop your engine before long on your stock parts - I did. Have fun while it lasts. I suggest you try and limit your runs to short bursts.
Longer runs, like a quarter or 1/2 mile will likely cause lean conditions.
Change to the ATS damper as recommended. Consider a bigger intercooler set up.
Running higher octane gas will help.
DC Performance can add fuel (re-tune) with the stock computer. Consider doing this too.
Dan
Paxton Supercharger 10lb pulley "Anyone running this?" Yes.
"I saw it on the racing solutions web site. will this put me over the limit for the stock bottom end?" Yes. Pistons would be a minimum. I'd go to forged rods too.
Mike and ILLSMQU,
At 10 lbs max boost, one or the other of you will likely pop your engine before long on your stock parts - I did. Have fun while it lasts. I suggest you try and limit your runs to short bursts.
Longer runs, like a quarter or 1/2 mile will likely cause lean conditions.
Change to the ATS damper as recommended. Consider a bigger intercooler set up.
Running higher octane gas will help.
DC Performance can add fuel (re-tune) with the stock computer. Consider doing this too.
Dan
I already have the larger intercooler and a handheld tuner, so a new tune would be easy to get. The pulley on the RSI website is 3.25" with a photo of a 3.33". Acording to Doug, DLM sells a 3.5"(what smoq has) and stock is 3.75". He also mentioned "playing with fire" and seemed most concerned about getting fuel as the main thing.
ILLSMOQ
Enthusiast
Yeah when i bought it he never really said it was a "ten" pound pulley, but I'm hitting ten pounds per the split second box. Fun stuff
I think I will wait a few months and see if your motor holds up before I try it out. I am having a fidanza flywheel installed on Friday, so that should keep me happy for another week. I have stoptech rotors on order(backorder). Seems like I am never satisfied...
ILLSMOQ
Enthusiast
As always, thanks for tips Dan. I'm running a lot of race gas and I try to let the motor cool a bit between blasts which is usually 3rd to 4rth.....and I've already accepted that sooner or later the motor is gonna blow.
ILLSMOQ
Enthusiast
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PJJP,
If you have a blower on your car, I would not recommend a lighweight flywheel. Been there, tried that, didn't work well.
The parasitic loss of the blower is much more noticable at low rpm, like getting the car moving from a stop up a hill.
Dan
If you have a blower on your car, I would not recommend a lighweight flywheel. Been there, tried that, didn't work well.
The parasitic loss of the blower is much more noticable at low rpm, like getting the car moving from a stop up a hill.
Dan
Jon 20002 ACR has a lightweight flywheel on his06 SRT blower car and loves it. His car stays up pretty close with mine, due to the flywheel and lighter rims, smaller tires. And he has less mods on his car otherwise. I think its probably a worthwhile mod if your in there doing a clutch
2002_Viper_GTS_ACR
Enthusiast
I dissagree, and I even have stock gears. I have maybe killed the car 2 times while letting IT back itself up ramps or forward over big obsticles AT IDLE... i'm telling you, I have had no problems with my alumn flywheel and if you have gears, it completely negates any minute chance of issue. But I'm stock gears, stock paxton kit and exhaust system, and I'm perfectly good and HAPPY with the alumn flywheel.
Jon
ILLSMOQ
Enthusiast
I'll end up with one at some point...there is a used fidanza in the classifieds for 100 bucks....otherwise summit racing has it at 479.00
