Went to the Woodburn dragstrip for a basic open track afternoon. Running on stock tires, Roush axle backs and rear lowering springs, discs out.
It was right around 90 degrees and the track was pretty greasy, Ive had other cars there and found it to generally have better traction...
Anyway; 60' 2.094
1/8 8.29 @ 90.34
1/4 12.59 @ 115.32

Rpm at launch was just off idle, anymore and it'd really spin, I feathered a bit to get these times.
Anyhow it was fun, I'm not a drag racer, I just wanted to see what me & the car could do.

If I could figure out how to put pics up I would. (haven't really tried too hard)

 

That's not bad at all for stock tires. Put some good rears and she should be closing in on 11's. Nice.

 

Definately good times with stock tires. I agree 11's with good tires, sticky track, 5k rpm launch!!

 

Nice

 

Kiss your Torsen goodbye (assuming you ordered it).

 

Nice times Dave!

 

lol

 

Thanks Drew & thanks for the responses. I didn't buy it to race but it would be fun to try some slicks. Probly wont as I don't wanna tear stuff up!

I would like to try a cooler day tho.

 

good M.P.H. what rpm did you shift at
good job

rob

 

Why would you say this? I have seen a few others say the same thing..........If the Torsen is not bullet proof then why was it 2k more?

I understand it was not made for the 1/4 mile but i also know most cars that run the road coarse have slicks or close to it.............

BTW Very nice times!

 

Thanks. I shifted as close to rev limiter as I could. Bumped it once ck'n my mirrors n ruined a run.
I DO wish it had better instruments thats for sure!

 

The Boss doin business.

[IMG][/IMG]

 

The Torsen (Torque-Sensing) was designed to shift torque from one wheel to another if traction is lacking by locking up. It wasn't built for absolute strength for hard launches but rather serves as a tool for traction under acceleration when unequal loads are applied to the rear tire, like when you're exiting a turn near the limits of the friction circle, causing one tire to go light and lose traction.

 

This. It's the hard shock loading (like a high-RPM drag launch on sticky tires) that will pop them. Something has to give in that equation, typically it is the tires (wheelspin). But if you get the tires to the point where they have enough traction to NOT slip in that situation, either the clutch or diff have to absorb the shock load.

It will have no issue in a road-course environment.

 

Anyone have an example of a Torsen letting go at the dragstrip? So far it looks like hearsay from road course guys who don't know any better.

ANY rearend can let go at the dragstrip.

 

I don't think anyone knows at this point but Torsen differentials, with their smaller, more delicate moving parts, have traditionally been less favorable with shock applications.

 

Agreed that any diff can let go at the strip.

There are a bunch of reports of them crapping out on F-Bodies a couple years back. You can find pictures of cracked casings etc if you search for them.

Anyhow--dragstrip application is not something I care about so it's irrelevant to me.

 

I would expect it to hold, I am not the type to drive a car easy for the sake of not breaking it. I leave it all on the track! If it can't hold, then no big deal. I will upgrade accordingly. I bought the Boss for that reason only. Pointless really, since my local track is currently closed.

 

They also have a 7.75" rear end iirc vs the Ford's 8.8"

 

+1
I think the torsen being weak is