Drive shaft loop With pictures - Dakota Durango Forum
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post #1 of 20 Old 04-04-2006, 02:42 AM Thread Starter
2003dakotart
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Drive shaft loop With pictures

I bought a summit universal drive shaft loop kit (part # SUM-G7900)

After some modifying here is what I came up with.

Drive Shaft Loop 1
Drive Shaft Loop 2
Drive Shaft Loop 3
Drive Shaft Loop 4

The inside diameter (width) of the loop was 5.25". this left a clearence issue on my R/T. We used a vise to press on each half and then heated and bent the sides back to that they 2 halves would line (bolt) back together.
The new ID was 6.5"

you will need to cut the rest of the pieces as follows:
off each of the other parts, cut a 4 hole piece off (used to bolt the 2 halves of the loop together) qty 2 pieces
cut 2 8" pieces off of the other side, this leaves the 90* bend as scrap.

you will also need an additional 4" piece

weld 1 8" piece and the 4" piece together in a 90* flat, goes on driver side.

the other 8" piece needs to be bent, 2" then 1.5" then 4" (the other 1/2" is in the bends)

these get welded to the sides of the top half of the loop.

the single bent 8" piece goes 1" above the split of the loop

the 8" + 4" goes 2.25" above the split.

only other pieces that you need are some spaces so put on the seat belt bolts, and 2 nuts to bolt the loop to the seat belt bolts


Notes: you should take measurements of your to get exact specs as this design might not fit every truck. Also, the exhaust heat shield had to be cut to reveal the passenger bolt.
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post #2 of 20 Old 04-04-2006, 02:53 AM
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For $20 it's pretty cool, but completely useless. Those things are meant to prevent the driveshaft from flying off or coming up through the floor if it fails. Your truck doesn't put out nearly enough HP to even worry about a failing driveshaft, let alone one flying off and hurting somebody. It's just gonna get in your way if you ever have to pull the driveshaft. But it's your truck, it does look pretty cool! and for $20 :biggthump

- Justin
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post #3 of 20 Old 04-04-2006, 03:00 AM
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Well even though it's a low chance that you will break it off, it certainly does have its advantages. First you must look at safety for you and others, and that it helps with. The more likley think I think it would do is screw up either the rear end or the tranny on whichever end it is still conected to (or both... eeek) if the driveshaft does break and (would have been) flying around. Either way that is now something you don't have to worry about! Looks very good, and of good quality also :biggthump

If you want more inches...STROKE IT!!!

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post #4 of 20 Old 04-04-2006, 03:08 AM
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Quote:
Originally Posted by AmberFireDaK
For $20 it's pretty cool, but completely useless. Those things are meant to prevent the driveshaft from flying off or coming up through the floor if it fails. Your truck doesn't put out nearly enough HP to even worry about a failing driveshaft, let alone one flying off and hurting somebody. It's just gonna get in your way if you ever have to pull the driveshaft. But it's your truck, it does look pretty cool! and for $20 :biggthump
it's mostly to prevent the truck from pole vaulting if the front U joint of the driveshaft fails. and yes his truck will need it as dictated by NHRA rules if he's running slicks or running faster than 13.49. some tracks enforce this diligently but others barely. his truck has already runs mid 13s on nitrous and he's swapping out for a blower so yes he will need it to race.

-John
Driveway Queen
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post #5 of 20 Old 04-04-2006, 03:18 AM
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He will need it.

I have one, be installing it soon. I fear for my DS on a 200 shot launch at 2500+rpms.

1999 426ci Dakota R/T & 2001 Loaded 4.7 QuadraDrive WJ Grand Cherokee
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post #6 of 20 Old 04-04-2006, 05:11 AM
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I have one on my Dak and I bracket race mine almost every week, or whenever the track is open. It runs 14.70's so I'm not required to have one by NHRA but its a good idea to have one. Just like with a helmet, not required for me but I have one.


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post #7 of 20 Old 04-04-2006, 05:28 AM
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Quote:
Originally Posted by scat_pack_dal
it's mostly to prevent the truck from pole vaulting if the front U joint of the driveshaft fails. and yes his truck will need it as dictated by NHRA rules if he's running slicks or running faster than 13.49. some tracks enforce this diligently but others barely. his truck has already runs mid 13s on nitrous and he's swapping out for a blower so yes he will need it to race.
Ok, nm then.....I didn't realize about the NHRA rules or that he was running mid 13's. But there is no way the truck is gonna "pole vault"....even if he had a front U joint..which he doesn't (unless it's been changed from stock)

- Justin
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post #8 of 20 Old 04-04-2006, 05:48 AM
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No company produces one of those for our trucks already. I though i had seen one somewhere??????


Quote:
Originally Posted by AmberFireDaK
Ok, nm then.....I didn't realize about the NHRA rules or that he was running mid 13's. But there is no way the truck is gonna "pole vault"....even if he had a front U joint..which he doesn't (unless it's been changed from stock)

How do you figure he doesn't have a front u-joint?

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post #9 of 20 Old 04-04-2006, 05:58 AM
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Quote:
Originally Posted by AmberFireDaK
For $20 it's pretty cool, but completely useless. Those things are meant to prevent the driveshaft from flying off or coming up through the floor if it fails. Your truck doesn't put out nearly enough HP to even worry about a failing driveshaft, let alone one flying off and hurting somebody. It's just gonna get in your way if you ever have to pull the driveshaft. But it's your truck, it does look pretty cool! and for $20 :biggthump
look around alittle before you talk. its a worth while mod. this is what happended to my 04 with very low miles after abotu 6-8 months:

http://www.dakota-durango.com/forum/...ped+driveshaft
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post #10 of 20 Old 04-04-2006, 06:00 AM
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Nice photos. I've had a driveshaft loop for awhile now, but have yet to install it. None of the tracks I go to have required me to have it and I run faster than 13.49, but then again, they aren't NHRA tracks (I am running drag radials). I recently acquired a fire jacket because of the new NHRA rule regarding non-OEM forced induction vehicles so that I could run at this one local NHRA track...I guess I should get the driveshaft loop on, too then. I never realized there was a rule relative to the ET for the driveshaft loop, I just knew of the tires requirement.

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post #11 of 20 Old 04-04-2006, 06:07 AM
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Quote:
Originally Posted by KotaStampede
look around alittle before you talk. its a worth while mod. this is what happended to my 04 with very low miles after abotu 6-8 months:

http://www.dakota-durango.com/forum/...ped+driveshaft
Yes I have also dropped a shaft in the past. I does happen sometimes.
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post #12 of 20 Old 04-04-2006, 06:13 AM
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I used to have a jeep wrangler. That thing used to drop the shaft like every 2 weeks. lol. It was pathetic.

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post #13 of 20 Old 04-04-2006, 06:30 AM
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I bought mine through GS Motorsports. Its custom for a Dakota, fits perfectly but I don't see them on their website anymore


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post #14 of 20 Old 04-04-2006, 07:29 AM
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Myth Busters did a show about pole-volting when driveshafts drop, the only way it will do that is if the driveshaft falls in correct time sequce and perfect angle into a hole when it breaks, than it might pole-volt the vehicle a lil but nothing like the whole vehicle will just go flying. It will simply pop up and right back down, cause more than likely the driveshaft will break or bend rather quickly!

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post #15 of 20 Old 04-04-2006, 07:01 PM
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Quote:
Originally Posted by KotaStampede
look around alittle before you talk. its a worth while mod. this is what happended to my 04 with very low miles after abotu 6-8 months:

http://www.dakota-durango.com/forum/...ped+driveshaft
The drive shaft loop wouldn't have prevented that....and it doesn't look like you crashed at all when it came out. Ya that sucks that it came out after only 6 months but all it did was drag on the ground till you stopped. I guess a loop may have prevented most the the damage inflicted on your driveshaft, from it dragging on the ground.

Quote:
Originally Posted by TraMotorsports
How do you figure he doesn't have a front u-joint?
I just went and looked and your right....my mistake. I thought the Driveshaft hooked up direct to the tranny.

- Justin

Last edited by AmberFireDaK; 04-04-2006 at 07:32 PM.
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