...so I have this goal. I'm trying hard to get into the 12's with no NOS and no FI, just motor...and on a college budget (yeah, its a challenge). So far I've got 4.08 FD gears, full bolt-ons and an Osiris tune, where I made 289 at the wheels. Building the engine right now is out of the question b/c of money.

I ran a 13.3 (106 trap) yesterday, on Nitto Invo's that are about 80% gone. Of course im thinking of getting some drag radials as my next set of rears, but last night, someone at the track with a Z, snapped an axle, I think becasue of his DR's. He was spraying NOS too (and not much else as far as mods), but said the bottle was only 10% full and he was hardly getting any spray.

Is this "axle snapping" something I should be worried about if I throw a set of r888's or Nitto drags on?

and just curious, do you think I'll hit 12's with some DR's?

EDIT: i have an HR motor

thanks

 

I made almost 100 passes on M/T Drag Radials with a clutch with almost no slip without issue. That being said....I have seen bone stock cars on stock Bridgestones explode an axle.

 

I'm no drag racing expert, but I believe one of the major contributors to snapping axles is not preloading the drivetrain prior to a launch.

 

If you're not breaking stuff you're not pushing it hard enough.

Even stage 2 axles are good for only 300-400 whp. If you're trying to go faster be prepared to break one.

 

college budget. I can't afford to not look into stuff and do as much research as possible. maybe in a couple of years when I can build a car from the ground up.

 

what do you have done to your car, that your hitting 13.0?

 

Bolt-ons, tired 93k mile motor, and tune.

 

+1

I was once in your shoe (12s in a DE with as little mods as possible and no tune on a college budget). It was definitely fun competing against myself.

If you're serious about breaking 12s, then go with full slicks. It'll come out to be cheaper than running DRs for both the track and the streets. Plus, it'll reduce the shock on your drivetrain because of the taller and softer sidewalls.

However, if you just want stickier tires that you can occasionally hit the tracks with, then DRs should be fine. And don't worry about snapping your axles. As long as you have the proper technique down, you probably won't break anything. Still, you never know what might happen when you race.

 

True. If you are a regular drag racer, you will break something. Guaranteed. Close your eyes and think 240 pounds of torque suddenly applied to “something” that does not want to turn. For example tires. Whatever the weakest link in the drive train will take the punishment.

 

lol, guess im pushing my car right then, on my third motor and third clutch, second F/I system.

 

Breaking them at the track due to constant abuse was what he meant. You need to actually go to the drag strip to be eligible for this and bad tunes don't count.

That reminds me, let's go to the drag strip ASAP. I'm gonna be real sad if my Z doesn't get its *** handed to it by your Z before I leave. Get rid of your rear Brembos for a day and throw my ET Streets on if you want low 11s.

 

Are you on slicks or street tires. If your running drag radials with those mods and hitting 13.0, then I should hit at least 12.9 with my HR motor and 4.08's...if I get the tires your using. Granted I dont have hundreds of hours behind the wheel.

Yeah I cant (actually...shouldn't) really afford to have a set of track wheels/tires (slicks) and street ones as well. despite my wants, i am still in college and need to stay financially responsible...whatever that means

im thinking about r888's in the rear, just this once, to hit 12's, and use them as my street tire until they wear up, and then go back to INVO's.

I just want to feel reasonably comfortable that im not going to be dropping my rear axle at the line when I get them.

 

I wouldn't run r888's....while they are sticky the sidewall is too stiff for drag racing. My pass was on DR's.....with one of my crappier 60's.....go figure. I still think my car could have gone 12.80's on the stock 3.5FD, but I lost interest. I might run it a time or two this year, but I doubt it.

 

^^^if not r888's then did you use. Mickey Thompson doesnt make a tire in my size...18x10, Nitto and BFG's are the only ones left that I know of.

 

...I guess I could use my 9in front rims as rears for dragging. MT has a tire that will fit those, and then just use a friends stocks for my fronts on the strip. But then for daily driving, id have MT's on my front and INVO's on the rear...kinda weird and probably not the best traction for rain. but i already knew that

all this ill figure out though, as long as im probably not going to be exploding my rear end at the strip, i feel better.

 

What is your best 60ft?

With the power you have and the gearing you should be 12's already

My DE went 13.1 @ 107mph with 262whp

 

my 60ft's are consistent 2.0-2.1. Which I think is my problem...just getting out of the hole.

 

This. . . is the correct answer. Always preload.

There are many cheap wheel options out there (stock FD, Z32, or Z33 wheels, etc.). R888s are not a drag tire and are expensive (even used, which I have plenty of), so I wouldn't waste your $ going that route either. What do you have for suspension and rear camber?

 

OP, post your slip. That is the easiest way for us to see where you are scrubbing off speed. 2.0 is solid on street tires......not great, but good.

 

Here's two of my passes. Most were within this range...pretty consistent.

I was right side both times.

I dont really preload becasue I have a 6MT. all I really know about preloading a manual is to ever-so-slightly ease up on the clutch when im staged, just to the point of when you move up a hair.

Edit: forgot to upload the slips