Driveshaft upgrade? Necessary/needed?

[FormulaMarauder]

Car is running at 11.7XX at 118mph. At the end of the track I'm getting minor vibration. Nothing serious. My question is simply if an upgrade/replacement to aluminum/PI is necessary at these speeds, and if it would help performance/time wise.

Thanks in advance.

[DTUB]

If your worried about it then do an upgrade, you don't want to loose a driveshaft on the big end.

[ctrlraven]

Find a late 1999 to early 2000 CVPI mmc driveshaft (most can be had for under $200), have it checked out, re-balanced if needed and new hardware installed and put on a driveshaft loop if you don't already have one.

[Mr. Man]

Tail shaft failure is no fun and you are getting into the range of danger. You may never have an issue but why risk it. There is a company in Fairfield NJ called the Axle Exchange that will build you a driveshaft to military spec and they weigh like 30 pound so you'll save some weight. Only thing is I believe it's expensive like 600. to 800. dollars. Like they say "If you want to go fast".... or get yourself one of the MMX shafts discussed above. Good luck.

http://www.axle-exchange.com/

[LANDY]

Upgrade it, there is nothing like peace of mind.

[stryker]

Find a late 1999 to early 2000 CVPI mmc driveshaft (most can be had for under $200), have it checked out, re-balanced if needed and new hardware installed and put on a driveshaft loop if you don't already have one.
Balaced how is that a Driveshaft can be balanced ?

[stryker]

Find a late 1999 to early 2000 CVPI mmc driveshaft (most can be had for under $200), have it checked out, re-balanced if needed and new hardware installed and put on a driveshaft loop if you don't already have one.
Balaced ? how is that a Driveshaft can be balanced ?

[ImpalaSlayer]

Upgrade it, there is nothing like peace of mind.

deff, you dont wana let that ***** eat at the big end. you will lay down a oil slick for yourself and prolly smack the wall.

as for performance, not really sure

[tbone]

Balaced ? how is that a Driveshaft can be balanced ?

It needs to be balanced just like your wheels. Small differences in weight are more pronounced the faster something spins.

[fastblackmerc]

Balaced how is that a Driveshaft can be balanced ?


Balaced ? how is that a Driveshaft can be balanced ?

Google.com is a wonderful thing...............

http://www.markwilliams.com/balancing.aspx

[LANDY]

deff, you dont wana let that ***** eat at the big end. you will lay down a oil slick for yourself and prolly smack the wall.

as for performance, not really sureand if you dont have a driveshaft loop it can break out of the tailshaft case, dig into the ground and there you go flying. its definately only a safety mod.

[Joe Walsh]

If you are going to spend big coin ($800) on a custom driveshaft buy a Carbon Fiber Driveshaft from PST.
Carbon Fiber is extremely stiff and vey light...but NOT cheap.
They built one for me and it weighs 13 lbs....it is a thing of beauty.
Too bad it's tucked up under the car....:(

linky: http://www.pstds.com/

[ctrlraven]

and if you dont have a driveshaft loop it can break out of the tailshaft case, dig into the ground and there you go flying. its definately only a safety mod.
It's also used to keep the driveshaft from flopping around and causing damage to the underside of the body.

[fastblackmerc]

and if you dont have a driveshaft loop it can break out of the tailshaft case, dig into the ground and there you go flying. its definately only a safety mod.


It's also used to keep the driveshaft from flopping around and causing damage to the underside of the body.

At the speeds your running a driveshaft hoop is a must and probably a safety requirement at the track.

[LANDY]

13.99 and faster must have a driveshaft loop by Track rules.

[babbage]

http://www.youtube.com/watch?v=k9DVlnX0jIc

Get an MMC or Dynatech 4" from Reinhart

[MOTOWN]

http://www.youtube.com/watch?v=k9DVlnX0jIc

Get an MMC or Dynatech 4" from Reinhart

man i feel bad for that guy:shake:

[ImpalaSlayer]

i had a metco loop on mine and thought it was pretty wimpy looking. id build my own if i were to do it again