04-23-2012, 04:25 PM | #57 |
[HOONIGAN]
Drives: 2012 ZL1 #1848[The HOONIGAN MOBILE] Join Date: Oct 2011
Location: Pennsylvania
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2012 ZL1 BLack M6 ECF
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04-23-2012, 04:43 PM | #58 |
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I still don't understand why there is a 100 hp loss from motor to tires I thought on average stuff like that was suppose to be about a 17% loss only
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ordered dec 15 2008 picked up on june 8 2009.
upgrades kooks 1 7/8" LTH w/ deleted cats, corsa exhaust, hurst short throw shifter stage 3 comp cam, 3.91 gears ecs kit blower, meth injection, upgraded axles, drive shaft, McLeod rxt clutch, fully forged 416ci stroker all installed and dyno tuned by slowhawk performance in bridgewater ma. |
04-23-2012, 04:49 PM | #59 | ||
Banned
Drives: 4 Wheels, Gasoline Engine Join Date: Jul 2010
Location: USA
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04-23-2012, 04:57 PM | #60 | |
Petro-sexual
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I also don't believe these engines are broken in, let alone fired. I know LS9s and LS7s are run on natural gas to check for correct sealing and pressures (after other previous oil and coolant pressure checks - and these, unlike LSA, are hand-assembled in Wixom, MI; not Mexico - last I checked...). I'm almost positive these aren't broken-in any more than other 6.2s, outside of LS9. However - I am on the fence as to correctly break a motor-in; I've heard and engine dyno' is best, since in a new car, you have other powertrain and chassis considerations to worry about. Scott is only making sure the customers are aware of how GM recommends the proceedure to be. Everyone is on their own otherwise.
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'20 ZL1 Black "Fury" A10, PDR, Exposed CF Extractor Magnuson Magnum DI TVS2650R // RFBG // Soler 103 // TooHighPSI Port Injection // THPSI Billet Lid // FF // Katech Drop-In // PLM Heat Exchanger // ZLE Cradle bushings // BMR Chassis-Suspension Stuff // aFe Bars // Diode Dynamics LEDs // ACS Composites Guards // CF Dash // Aeroforce // tint // other stuffs |
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04-23-2012, 08:39 PM | #61 |
Drives: 2011 denali hd2500 Join Date: Sep 2011
Location: clarkston, mi
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04-23-2012, 08:59 PM | #62 |
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Stock zl1 here said 476rwhp multiply that 476 x .17=80.92 we will say 81 so add the 81 to the 476 and you get 557 which to me seems more like these are the same as the ctsv
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ordered dec 15 2008 picked up on june 8 2009.
upgrades kooks 1 7/8" LTH w/ deleted cats, corsa exhaust, hurst short throw shifter stage 3 comp cam, 3.91 gears ecs kit blower, meth injection, upgraded axles, drive shaft, McLeod rxt clutch, fully forged 416ci stroker all installed and dyno tuned by slowhawk performance in bridgewater ma. |
04-23-2012, 09:03 PM | #63 | |
I used to be Dragoneye...
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Great read, Torq!!
Lots of great modification threads coming out, now. I'm enjoying them all! Quote:
He's not making this stuff up - so the "mechanical engineer" comment was quite off-base. Call him the messenger, if you will... You certainly don't have to obey the recommendations....but I am. |
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04-23-2012, 09:58 PM | #64 |
Drives: Both American Made Join Date: Feb 2008
Location: Texas
Posts: 781
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Since you are trying to measure a "loss" consumed by the drivetrain, you would multiply the crank horsepower x .83 which would be the equivalent of subtracting 17% from the total. That gives you 481.4.
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2012 ZL1 #213 M6 Black on Black 2013 ZL1 #2638 Convertible Auto 2010 Chevrolet Suburban 2011 GMC Seirra HD Denali |
04-23-2012, 10:12 PM | #65 |
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still though i feel its still a big hp loss compared to the amount we lost on our ss
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ordered dec 15 2008 picked up on june 8 2009.
upgrades kooks 1 7/8" LTH w/ deleted cats, corsa exhaust, hurst short throw shifter stage 3 comp cam, 3.91 gears ecs kit blower, meth injection, upgraded axles, drive shaft, McLeod rxt clutch, fully forged 416ci stroker all installed and dyno tuned by slowhawk performance in bridgewater ma. |
04-23-2012, 10:14 PM | #66 |
Drives: 2010 RS/SS Join Date: Jul 2009
Location: USA
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04-24-2012, 12:45 AM | #67 |
Booooosted.
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Wow. Homepage sponsor thread?
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04-24-2012, 01:09 AM | #68 | |
BeckyD Rocks :-)
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580 SAE hp at crank -476 rwhp = 104 hp drive train loss 104/580= 17.93%
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2015 CRT 1SS/1LE RS/Recaro's/NPP/Nav/Rear vision pkg./BA speaker upgrade. Stage 3 BMR cam, ARH 1 7/8 headers, CAI,
BMR 1.25 drop springs, JPSS Billet Bushings, Peddars Cradle Bushings...460 whp...so far....SOLD, but not forgotten! |
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04-24-2012, 01:59 AM | #69 | |
Drives: 2004 Pontiac Grand Prix Join Date: Oct 2010
Location: Lomita,CA
Posts: 806
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you really can't compare your dyno run to any other dyno runs out there, I have seen ZL1 Dynos report around 510RWHP on youtube somewhere. Where dynos are useful is seeing what your gains are (where you started and where you ended up at). Though in this day and age a car with 20% loss is a bit on the heavy side, I would expect this car to really be in the 10-15% range. Though from the first post it sounds like they were seeing a good drop from the heat. So really a 580BHP engine could have been running at around 560BHP on that day in that condition. So many variables and not enough info to real make such a judgement call that you are making. |
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04-24-2012, 03:33 AM | #70 |
MOD SQUAD
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mmmmm popcorn...
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Who cares about the Blue Oval crowd and their little Ponys? We're getting our Camaro back-and it'll be Supercharged!-MDAII Team LS3 |
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