Wondering about building a 1200 to 1400 hp Viper. How much can you really use on the street? I am not into allout drag racing with slicks, etc... I might take it to the drags once to say I ran a 9 second pass, but other than that it will be strictly for the street and roadcourse track.
With BFG's I'd say 900 is pushing it. With the 750 I had 1st and part of second gear were tough to get traction. That much power takes getting used to. Respect it until you can control it.
On drag radials, 900 rwhp is very doable in 2nd gear under the right conditions (sticky concrete rather than asphalt, low humidity, warmer temps so the concrete is warmer, etc...)
Peter
If you're going to build a 1200hp car for tracking you'll probably spend more time in the pits than on the track. Besides, it wouldn't be any more useable on a road course than it would be on the street.
Dragging is another story. They spend more time in the pits than on the strip no matter how much HP they have.
What do you want to do on the street? You can use a lot more in 70-150+ roll ons than you can in stoplight launches or 30-100 roll ons. That's why it's nice to have turbos and boost control, so you can vary the power depending on what gear you're in and how fast you're going. If you're rarely ever going to go over 100, there is probably no point in spending the money for 1,200-1,400 hp because you won't be any faster to that speed than if you had "only" 800 hp.
The problem here is that there is a negative feedback effect. In order to use that much power, you're going to need a tire capable of sustaining high speeds(160+) for extended periods; otherwise you will not fully indulge in the car's capabilities. The problem with that is, those tires are not exactly the stickiest at lower speeds (30-120mph). And with that much power, they will feel like you are driving on ice compared to a drag radial no matter how much the boost is dialed down.
Kumho's are your best bet, and I wouldn't shoot for anything over 900rwhp on pump. Anything more is not needed and will not get used unless you are at the drag strip running slicks. It only took Gary Javo mere seconds to go from 80-180mph running 930rwhp.
traction control will change the equation when it is sorted out properly. right now it seems people are having problems getting traction control to be trouble free - but when that is resolved - it will open up a new world of useable power
in the meantime a base model TT packages are all you need and can use on the street - which in race tune will get you over 900rwhp anyway.
For a TT car that will be tracked a lot - you want efficient wastegate design to bleed off excess boost and run it at low boost. Even then you will be pedalling it for sure out of turns. Some wastegate setups I have seen are so inefficient you'll over-power the car for road courses even with the boost as low as it will go.... depends on the track of course - and a cooling system up to it. Water injection would be invaluable there.
Wondering about building a 1200 to 1400 hp Viper. How much can you really use on the street? I am not into allout drag racing with slicks, etc... I might take it to the drags once to say I ran a 9 second pass, but other than that it will be strictly for the street and roadcourse track.
Need your advice, thanks.
Buddy, The key to putting down that kind of power on the street is having big enough turbos that do not go from 600 to 1100+ RWTQ in a matter of 500 RPM.
I would say most of the guys here who have twin turbo Vipers have a pair of the T-03/T-04 hybrids whose turbine wheels and turbine housings are small compared to the T-04 turbine and compressor sides I use in my turbo systems.
A properly designed TT with appropriately size turbos will have a much better driveability than an equally well designed TT with too small of a pair.
I agree with Tom86ZT about Shank's car. While it is a fantastic car, perfectly accented with fabulous style, and a killer UGR TT system, 1st, second and sometimes 3rd and 4th are kind of hairy.
I believe this hairy-ness directly correlates to the slope of the torque curve.
Even with a much bigger turbine housing and turbine wheel, the turbos on my systems spool plenty quick but the resolution with which they spool in relation to the RPM, makes how the power comes on much more useable.
I have driven both my car when it had 900+ RWHP and 1100+ RWTQ and Ryan's car with the T-03/T-04 hybrid GT35R's at the current 900+ RWHP(not sure about the torque) and I can say that my car pulled way harder for way longer. My car put down pretty much the same peak power with much more ease of driveability.
Here is a dyno graph to illustrate what I am talking about slope of the torque curve being more gradual. Notice how much area under the curve there is and how little variability there is between the minimum and maximum HP #'s. ==> This makes for smooth, useable power everywhere, which I believe to be the defining essence of being able to put the power to the ground.
Forget the car, I wouldn't be able to control myself with that kind of power. I'd probably be trolling all the other forums calling out all the people on their high horses so I could layeth the smaketh down on em. I'd take that SVS car and call out the baddest Supra and run him for all to see.
From watching Gary J's video against the turbo busa.........he was on street tires wasn't he? How well do these high hp (1200rwhp+) vipers grip on roll ons on the highway with street tires?
Forget the car, I wouldn't be able to control myself with that kind of power. I'd probably be trolling all the other forums calling out all the people on their high horses so I could layeth the smaketh down on em. I'd take that SVS car and call out the baddest Supra and run him for all to see.
Just imagine if Chad had the attitude of Gary J when it comes to some of the street stuff. He'd have more kill vids then he'd know what to do with. And with a rear mount camera just about EVERYTHING he raced would fade into a tiny dot in a matter of seconds
Chad- I know all the street stuff is not really your deal, but maybe just ONCE could you demonstrate how much damage that car would put on something else thats "somewhat" comparable to it? Would make an awesome video for sure
