Drag Racing W/ Forced Induction

[Dream20b]

preloading is only really necessary on turbos or for hardcore racers, imo its just a good way to break shit for the average drag racer...

[spitfire481]

Originally Posted by Dream20b

preloading is only really necessary on turbos or for hardcore racers, imo its just a good way to break shit for the average drag racer...

Preloading and leaving off the ebrake/slipping clutch is way easier on the drivetrain than just launching.

We couldn't make enough power off the line in my car with a 26" et street radial with dumping the twin disk, even at 6500rpm launch control. It would just bog and fall on its face. We made 4 passes changing things every time before a stock axle finally went out. We planned on going back the next week with a Perrin ebrake drift button and preloading/slipping the twin disk, which should have solved all the issues. But we have the trans out of the car for something much better at the moment so we won't be back at the track for a couple months I'm guessing. A lot of r&d to do first.

Best pass was a weak 11.7 with a 2.3 60ft from bogging. Mph was 130-133 all night

[johan]

Originally Posted by spitfire481

Preloading and leaving off the ebrake/slipping clutch is way easier on the drivetrain than just launching.

We couldn't make enough power off the line in my car with a 26" et street radial with dumping the twin disk, even at 6500rpm launch control. It would just bog and fall on its face. We made 4 passes changing things every time before a stock axle finally went out. We planned on going back the next week with a Perrin ebrake drift button and preloading/slipping the twin disk, which should have solved all the issues. But we have the trans out of the car for something much better at the moment so we won't be back at the track for a couple months I'm guessing. A lot of r&d to do first.

Best pass was a weak 11.7 with a 2.3 60ft from bogging. Mph was 130-133 all night

26" is big for that trap. I would think a 24.5 would be a better match, making 10's a possibility with the right setup / driver / track.

[spitfire481]

Originally Posted by johan

26" is big for that trap. I would think a 24.5 would be a better match, making 10's a possibility with the right setup / driver / track.

26" takes me to 8k rpm at the traps in 4th, saving me from another shift. wont be an issue when the auto trans goes in. im over the crappy shifting, twin disk driveablilty, failures, etc. ill be leaving off a trans brake now lol

[#maverick#]

Was at the track the other day. My best pass was a 12.2 @ 116 with a 2.0 60". If I can cut my 60' down I know this car has an 11 second pass in it as it sits. This run was lift shifting. I can cut a couple tenths by doing no lift to shift and launching a little lower and slipping the clutch more.
Not bad for my first ever time doing a pass at the track though.

[ame="https://www.youtube.com/watch?v=6ROKahJKEuk&"]Frs - YouTube[/ame]

[johan]

Originally Posted by #maverick#

Was at the track the other day. My best pass was a 12.2 @ 116 with a 2.0 60". If I can cut my 60' down I know this car has an 11 second pass in it as it sits. This run was lift shifting. I can cut a couple tenths by doing no lift to shift and launching a little lower and slipping the clutch more.
Not bad for my first ever time doing a pass at the track though.

tires?

[#maverick#]

245/45/17 Nitto NT555rs on stock wheels at 18 psi

[johan]

Originally Posted by #maverick#

245/45/17 Nitto NT555rs on stock wheels at 18 psi

Ahh, that makes more sense. Good time. Would be even better with slicks

[#maverick#]

Originally Posted by johan

Ahh, that makes more sense. Good time. Would be even better with slicks

Yea not trying to break shit haha. Ill just try slipping the clutch out more

[johan]

Originally Posted by #maverick#

Yea not trying to break shit haha. Ill just try slipping the clutch out more

Slicks are generally considered to be easier on your drivetrain than drag radials. They have "slip" built into the sidewalls. Reduces the shock load to everything else.

[spitfire481]

slicks do help drivetrain shock off the line because of sidewall flex. radials give less flex and create more shock, but you can run them spring/summer/fall here everyday. I have had zero problems even getting stuck in rain with et street radials. I prefer the "street car" setup

[Dream20b]

Also, In case you're wondering on the updated mod list-
Sprintex 210 Supercharger (Non-Intercooled) with Raceseng 70mm Drive pulley
Tomei Equal length header
Perrin 2.5" resonated cat back exhaust
100% E85 fuel
Stock Tires.

I'm going to be buying a clutch and a flywheel, as well as some slicks and wheels for the rear.