[stlwagon]

Originally Posted by travelers

A two piece d/s is one with two shafts. The slip is not considered a seperate or second piece.

I didn't realize that. I thought these were still considered two-piece shafts.

[psfracer]

Originally Posted by MakeMyStang

Think I am going to put some loops on my car, even though I am using the stock D/S in which I will stick with.

What loop(s) are recommended that can e installed without any drilling or lifting the interior carpet or trim?

Man, I feel bad this happened to him.

This is what I used when I had the stock driveshaft. Two pieces, one for the front of the 1st driveshaft, and one for the front of the second driveshaft (tunnel brace)--BMR--uses existing mounting points, no drilling at all.

I only use the front loop now because I have the Powerhouse 1-piece shaft.

[stlwagon]

See Travelers' post on interpreting driveshaft failure in the Tech Links

Interpreting Driveshaft Failures

[MakeMyStang]

Originally Posted by psfracer

This is what I used when I had the stock driveshaft. Two pieces, one for the front of the 1st driveshaft, and one for the front of the second driveshaft (tunnel brace)--BMR--uses existing mounting points, no drilling at all.

I only use the front loop now because I have the Powerhouse 1-piece shaft.

Thanks, looks like a nice well made set.
D

[don_w]

Originally Posted by stlwagon

NHRA safety rules require a driveshaft safety loop on any vehicle running quicker than 13.99 on slicks or 13.00 on street tires.

Hmmm... that doesn't sound correct to me. But, I don't have my NHRA rule book with me. My recollection is that a loop is required: (1) for cars running 11.49 or quicker, or (2) with slicks, no matter what the ET. I've never heard of the "13.00 on street tires". Maybe that's just your local track rules.

Originally Posted by psfracer

This is what I used when I had the stock driveshaft. Two pieces, one for the front of the 1st driveshaft, and one for the front of the second driveshaft (tunnel brace)--BMR--uses existing mounting points, no drilling at all.

I only use the front loop now because I have the Powerhouse 1-piece shaft.

My original Metco loops were similar. The were a direct bolt-on from under the car, without even removing the DS. Very simple install, and excellent fitment. But, the Metco loop wouldn't work with the Powerhouse shaft, so I sold them and bought a used BMR front loop.

[stlwagon]

Originally Posted by don_w

Hmmm... that doesn't sound correct to me. But, I don't have my NHRA rule book with me. My recollection is that a loop is required: (1) for cars running 11.49 or quicker, or (2) with slicks, no matter what the ET. I've never heard of the "13.00 on street tires". Maybe that's just your local track rules.

Ok... Let me do some more checking.

[stlwagon]

Ok... Had the street tire ET wrong.

This is direct from the NHRA site:


Adjustment to E.T. requirements
In a move designed to encourage more street vehicles to compete on the quarter-mile, NHRA has revised its requirements for roll bars, SFI Spec clutches, driveshaft loops, driver restraints, and certain protective clothing. Beginning Jan. 1, 2005, a roll bar and an SFI 16.1 driver-restraint system will be mandatory on any vehicle running 11.49 or quicker and for convertibles running 13.49 or quicker. An SFI 3.2A/1 jacket will be mandatory for all drivers in vehicles running between 10.00 to 11.49 seconds. On any car running 11.49 or quicker, a flywheel and clutch meeting SFI Spec 1.1 or 1.2 and a flywheel shield meeting SFI Spec 6.1, 6.2, 6.3, or 9.1 will be mandatory. A driveshaft loop will be required on all cars running 13.99 or quicker and utilizing slicks, except vehicles equipped with street tires running 11.49 or slower

[kj_cinci]

So how hard are they on all these rules... had a guy tell me I need a helmet, which I had but had taken it off after the run... and I have seen guys driving high 10's in verts without a roll cage...

I guess it is up to the track and outside of competition...??

[don_w]

Originally Posted by stlwagon

A driveshaft loop will be required on all cars running 13.99 or quicker and utilizing slicks, except vehicles equipped with street tires running 11.49 or slower

Yep... that's what I thought.

Originally Posted by kj_cinci

So how hard are they on all these rules... had a guy tell me I need a helmet, which I had but had taken it off after the run... and I have seen guys driving high 10's in verts without a roll cage...

I guess it is up to the track and outside of competition...??

It's really up to the track. I frequent two 1/8-mi tracks on a regular basis. One is fairly strict, the other isn't at all. The track that is strict has warned me about running below 7.50 without a cage, and they always check under the car for the DS loop. The also make sure the helmets are SNELL 2000 or better. The other track is more fun. haha.

[travelers]

I know i'll be installing one when i do my d/s. I wasn't going to but now thats a whole different ball game now.

[kj_cinci]

OUr track never check on cars without racing numbers... they may say something as you get your time slip...

ALWAYS have a DS loop! Especially making some power! Heck even the stocker should have had one!!

[helicfii]

All is crystal clear now.....

[MakeMyStang]

Originally Posted by My05

Finally pics, the car has not been put up on a lift yet so these are just ones I was able to take with the car on the trailer...

As you can see it cracked the transmission wide open, the d/s appears to have broke at the yoke (I think its called - where the larger part of the d/s meets the smaller diameter portion that attaches to the transmission).

The tunnel was beat up enough that it bent both rails that the seats slide on so both seats have difficulty moving. We'll see tomorrow what a general estimate looks like.

any new finding on the damage and repair.

[65sohc]

Did anyone see the episode of Forza Motorsports on Speed Channel this week? There is a nice in car video of what happens when a driveshaft lets go on a road course. In this case it was the Year One Challenger. That's one mod I can take off my list.

[stlwagon]

Originally Posted by 65sohc

Did anyone see the episode of Forza Motorsports on Speed Channel this week? There is a nice in car video of what happens when a driveshaft lets go on a road course. In this case it was the Year One Challenger. That's one mod I can take off my list.

What did it do to the car??