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The VIPER Garage  |  Viper Racing Discussions  |  Acceleration Tests, Drags, Half and Mile tests  |  Mile racers opinion wanted.
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Author Topic: Mile racers opinion wanted.  (Read 1074 times)
RTTTTed
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Viper Nation - ezine
« on: September 18, 2013, 03:13:51 AM »

My Roe supercharged GTS ran 175mph in the mile at 2300' alt.  It ran 195mph in 2 miles at that altitude. 

At 6,500' In the Halfmile shootout I ran 147mph with a passenger and 151mph without. 

My engine started to blow blue smoke out the exhaust this spring so I changed rings and bearings, added an oil pan trap door kit and ported the heads and intake more.  My car on the dyno was supposed to be making 502whp when I did all the above runs.

I broke the engine in driving from Nimpo Lake to Las Vegas, then up to Ely, Nv where I ran 180mph in the standing mile!  That was the fastest street car = 1 race car did beat my time.  That was a 6,500' altitude.

My question is how much whp does that reapresent and what would the altitude factor to at sea level.  Ie; what speed would I run at the Texas Mile? 

With my upgraded 5 &6th gears in the tranny I'm wondering if I could make 200mph ... or would I have to hook up a little Nitrous too?
« Last Edit: September 18, 2013, 11:02:34 PM by RTTTTed » Logged
1999 1200rwhp TT GTS - ART, 2001 Roe sc GTS- (4 sale), 440 Duster restomod (sold), 3x Stealth TTs, 92 Daytona IROC with T3, 580whp/1080wtq Cummins pickup.
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« Reply #1 on: September 18, 2013, 09:46:10 AM »

I sent an email with the question to Lyle. He might know the answer for you.
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Viper Nation - ezine
« Reply #2 on: September 18, 2013, 09:53:59 AM »

I can make guesses, but it would be bette for someone with more experience to estimate the potential at different altitudes.  I'm always trying to learn and running the mile I've done a few times in each car so I'm wondering if I should build a 6 point cage, hook up the nitrous and go run 200mph+ which would make my car's performance equal to a Veyron!   
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1999 1200rwhp TT GTS - ART, 2001 Roe sc GTS- (4 sale), 440 Duster restomod (sold), 3x Stealth TTs, 92 Daytona IROC with T3, 580whp/1080wtq Cummins pickup.
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« Reply #3 on: September 18, 2013, 09:55:17 AM »

Sell it and go buy Hugh's car... It's already gone 202
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« Reply #4 on: September 18, 2013, 11:17:26 AM »

Ted, I think the weight of the car would also be a factor
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beat on it like its your little brother !

« Reply #5 on: September 18, 2013, 02:45:02 PM »

Ted
  The H P it will take to run at 200 mph using .34 as the C of D , 19.5 sq ft as the frontal area and 3600 lbs as the weight is approx. 400 twhp,
that is to maintain 200 mph taking approx. 370 hp to overcome the air resistance and 30 hp to overcome the rolling resistance , getting there in one mile is a whole different formula .
 Hp required may be slightly less at high altitude due to less air to move out of the way of the car , but your splitting hairs at that point .
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RTTTTed
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Viper Nation - ezine
« Reply #6 on: September 18, 2013, 11:05:40 PM »

Sell it and go buy Hugh's car... It's already gone 202

What slow down from my 215mph in 3/4 mile?  I went 175mph in the standing Halfmile at 6500' in Ely with my TT on low boost.  It would be nice if my slow Viper was faster than a Veyron SS (200mph), but it's not necessary.  My TT gets 17mpg on the highway and my Supercharged Viper gets 22mpg! 

 :idk:
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1999 1200rwhp TT GTS - ART, 2001 Roe sc GTS- (4 sale), 440 Duster restomod (sold), 3x Stealth TTs, 92 Daytona IROC with T3, 580whp/1080wtq Cummins pickup.
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Viper Nation - ezine
« Reply #7 on: September 26, 2013, 03:04:35 PM »

I used an NHRA altitude compensation chart to find that (with no cold tires and no burnout) my 180mph would have been 190mph at sea level.  Since Texas and Florida are about sea level I would assume I would run about 190mph there.  Being a qurter mile chart I'm not sure what difference that would make to the mile ... :headscratch:  I would have still been in 5th gear at 190mph.

http://www.youtube.com/watch?v=4qDLDjzPSjQ&feature=c4-overview&list=UUlguKluv7iz_0sZ8PUuXbCA
« Last Edit: September 26, 2013, 03:08:13 PM by RTTTTed » Logged
1999 1200rwhp TT GTS - ART, 2001 Roe sc GTS- (4 sale), 440 Duster restomod (sold), 3x Stealth TTs, 92 Daytona IROC with T3, 580whp/1080wtq Cummins pickup.
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Viper Nation - ezine
« Reply #8 on: September 26, 2013, 03:18:35 PM »

According to the host doing a Gen 5 track record attempt at mile high in Colorado ...  5,200' is about a 15% power loss.

https://www.youtube.com/watch?v=2LNxvFHHJDA
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1999 1200rwhp TT GTS - ART, 2001 Roe sc GTS- (4 sale), 440 Duster restomod (sold), 3x Stealth TTs, 92 Daytona IROC with T3, 580whp/1080wtq Cummins pickup.
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