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| AWD |
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#1
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All things being equal
OK so I'm trying to make sense of why we are slower than RWD cars.
Fact: we are around 300 pounds heavier which equals around .3 in the 1/4. We have around 25% drivetrain loss vs. 15% for RWD. This would mean only around 30-40 HP difference right? With both of these factors, we still wouldn't pull the times that RWD guys are pulling. With the corrected times for DA the fastest AWD should be around 13.0-13.1 in the 1/4. If we got an extra .3 for the weight we would be at 12.7-12.8 with 0 DA. Add an additional 30-40 HP due to drivetrain loss and we would be at around maybe 12.5-12.6. How is it that RWD guys with the same mods than us are running so much faster? I'm starting to think it's also due to gearing. With better gears I'm sure that we could match their times if we were to use the calculations that I noted here. Of course we would still be slower but at least even given these factors. Your thoughts?
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Inertia Street heads .020 milled, Spartan cam, underdrive pulley, catless mids, JBA shorty headers, Borla exhaust, Volant intake, Predator, hotel seo, hotel marketing, hotel printing |
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#2
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You may proceed now.
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![]() ![]() ![]() http://www.watsoncard.com/magnum/ AirHammer, Heads, Sidewinder, Shorties, High Flows, Catback, Throttle Body, Predator |
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#3
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shown up
there it was...
25% loss, that's horrific! Then add in the weight of another drivetrain. I'm kind of surprised at the figure you quoted. Jeez, that's even worse than I thought it was.
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Gonna miss ya, Lou! Steve 06 300C SRT8 option groups I, II, III everything but DVD (no kids in my car!) Best ET-12.794, Best trap 110.9 |
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#4
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Need some clarification...
If you wouldn't mind sharing where you got the figures from I'd appreciate it.
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N/A Quickest and Fastest AWD LX FRI Econo Heads & FRI Sidewinder: Installed @ BFNY by Hemi31 with special guest Fnkychkn, JBA Shorties, JBA/HHP hi-flow catted mids, stock SRT8 cat-back, C&L CAI. HUGE thanks to Hemiwagn and HalfFast Performance for making it all possible. ![]() ![]()
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#5
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The 25% drive train loss figure has not been verified.
__________________
![]() ![]() ![]() http://www.watsoncard.com/magnum/ AirHammer, Heads, Sidewinder, Shorties, High Flows, Catback, Throttle Body, Predator |
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#6
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What figure are we talking about here exactly? the 25% loss? Any guesses if its not 25%?
From the very few and I mean few dyno numbers I've heard the stock AWD does between 245 & 250 awhp. I thought the weigh difference was 200lbs, I actually saw that figure on a Brochure last weekend.
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MODS..AFE II, DIABLO PREDATOR,SRT EXHAUST,INERTIA HEADS AND SPARTAN CAM(BOB@SVS TUNED) >>>>>>THIS IS SPARTA<<<<< Last edited by madeulooq; 08-04-2009 at 05:57 PM. |
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#7
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OK I was only going off what others have said about the 25% loss as I have never gone on a dyno. For the weight difference, on the sticker on my car's door it shows around 300 pound difference. I have full options so maybe thats the difference. Token, for running 12.8 in positive DA that is truely awesome. Did you lighten your car to get there?
So now I'm even more confused. We have better gears and shouldn't weight that much different than RWD's. How the hell are we so much slower then? Everything you guys say is countering any reason why we are slower yet there is nobody that can explain why. If our weight isn't much different and our gears are better then we might lose more than 25% in our drivetrain? If we truly get around 245 stock to the wheels then with a stock block being 340 HP we have roughly a 28% loss.
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Inertia Street heads .020 milled, Spartan cam, underdrive pulley, catless mids, JBA shorty headers, Borla exhaust, Volant intake, Predator, hotel seo, hotel marketing, hotel printing |
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#8
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stop harping on DA... that is a guess of what it will do in better air. if you dont like the track or DA you run in make a road trip like most everyone eles and stop paper racing other cars.
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![]() 2010 Challenger R/T 07 Grand Cherokee limited HEMI RIP DynoBob 06 300c fri'd....... SOLD best E/T 12.420 , 110.93 , 1.79 on a stock verter! fastest moddified 5.7 at shindig 08 |
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#9
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Can't say for sure since mine is RWD not AWD but I will say that watching you guys launch at the LX & B nats I was jealous and very impressed. If we (RWD) are faster it can't be by much (drivers race) and you guys should be way more consistant I would think.
Joe |
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#10
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awd are very consistant but when a modded rwd with slicks and a stall hooks its a lot of difference in the 60ft . if they could stall like say the srt8 jeeps and leave like that the story would be alot different.
__________________
![]() 2010 Challenger R/T 07 Grand Cherokee limited HEMI RIP DynoBob 06 300c fri'd....... SOLD best E/T 12.420 , 110.93 , 1.79 on a stock verter! fastest moddified 5.7 at shindig 08 |
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#11
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Could the difference be the tires? I doubt the fastest RWD times were run on stock tires. Everything else being equal, of course.
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~~~~~~~~~~~~~~~~~~~~~~~~ "Prosperity is a great teacher; adversity a greater." -William Hazlitt 2006 Black Magnum RT AWD - Cherry Bomb Vortex Cat Back, SLP Dual-Wall tips, Volant CAI 2010 Black Jeep Commander Limited |
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#12
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i ran a 12.66 on stock conti tires...tires does make a diff but awd are not exactly seeing wheel spin issues
__________________
![]() 2010 Challenger R/T 07 Grand Cherokee limited HEMI RIP DynoBob 06 300c fri'd....... SOLD best E/T 12.420 , 110.93 , 1.79 on a stock verter! fastest moddified 5.7 at shindig 08 |
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#13
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Gotta disagree with that......the LX's with DR's will match the 60' times of the Jeeps too. After owning an AWD I have to say it's in the torque management,or something else electronic.........just won't let the damn thing run.
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BFNY PERFORMANCE Cam/Head Installs,Motor Installs,Suspension,Axles and Exhaust at reasonable prices ,Intake Machined,PM or Email BFNYPerformance@Charter.net . ARRINGTON 426, PARAMOUNT HTCNag1,Flexplate,Converter,3.73 8.8 and Driveshaft ,FRI 09' 5.7 Heads and 235/247 cam,Billet Tech Covers and dress,CTP Twins ,HHP and PWR parts support.
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#14
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mexi I don't know why it seems that you have a grudge with me and tend to follow me around down talking me. Get a life for real buddy. I have no issues with you. Matter of fact I don't care to ever hear from you again. Have a good life.
As it stands now I'm pretty much over modding this car and looking forward to my next project coming in soon which would smoke any car here on a road course. I'm so sick of the band wagon people here bashing anyone different and then chasing them on various forums to do it again and again. RCR SL-C here I come.
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Inertia Street heads .020 milled, Spartan cam, underdrive pulley, catless mids, JBA shorty headers, Borla exhaust, Volant intake, Predator, hotel seo, hotel marketing, hotel printing |
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#15
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i was meaning that if they could launch like a jeep srt it would be night and day in the awd's e/t's
__________________
![]() 2010 Challenger R/T 07 Grand Cherokee limited HEMI RIP DynoBob 06 300c fri'd....... SOLD best E/T 12.420 , 110.93 , 1.79 on a stock verter! fastest moddified 5.7 at shindig 08 |
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