Driveshaft banging the saftey loop?

Coupe50h · 09-10-2006, 11:52 PM

only on a hard launch on slicks, say a low 1.7 60', It hit, and shredded off some aluminum of the d/s on mountingbolt on the loop

Does not hit during regular hard driving? It is the frpp aluminum d/s, I installed it a couple inches behind the tailshaft, and i used the lakewood loop, just for mustangs, I also used the spacers that come with it to make it fit the contour of the floor, the only way it would fit was a little close on the passenger side, but i went ahead with it.
I checked my tranny, and crossmember mounts, everything is tight?

Now my motor mounts are pretty bad, And im going to replace with some vert mounts, I doubt that will solve the problem completely being how hard it hit's now, I really dont want to destroy a 300$ d/s, seems a device made to protect it, is now destroying it.
I dont want to have to re-drill mounting holes, but looks like i might have too, what do you guys think?
thnx.

Dark_5.0 · 09-11-2006, 01:15 AM

The aluminum driveshaft is bigger around than the factory driveshaft. I have the same safety loop and mine mounted just like you described.

If it is scraping the mounting bolts I would try grinding down the head of the bolts to gain clearance.

Before I drilled more holes in my car I would cut and modify the safety loop.

Jeff Chambers · 09-11-2006, 09:11 AM

I always do away with the bolts all together and weld the loop up. It gives the clearance necessary for the aluminum driveshafts.

Coupe50h · 09-12-2006, 02:37 PM

Thanx for the reply, I can weld it no problem, but dont i need it to be removeable? or can i just slide out the d/s, if i ever need it out?
Thanx dark, and jeff, I Will try grinding the bolt head first, then i'll remove them if that dont work,
lol, when you hear a loud bang like that on a launch, it can scare the crap outta ya

68Falcon · 09-14-2006, 07:22 PM

You can slide the driveshaft out with the loop welded in. No need to remove the loop just to take the driveshaft out.

Coupe50h · 09-16-2006, 12:42 PM

Ah i see now, Thanx, Also after looking at it, i can just weld the top half of the loop in, and leave just four botom bolts...thanx alot

09-10-2006, 11:52 PM	#1
Coupe50h Registered Member Join Date: Aug 2002 Location: SanAntonio, Tx Posts: 957	Driveshaft banging the saftey loop? only on a hard launch on slicks, say a low 1.7 60', It hit, and shredded off some aluminum of the d/s on mountingbolt on the loop Does not hit during regular hard driving? It is the frpp aluminum d/s, I installed it a couple inches behind the tailshaft, and i used the lakewood loop, just for mustangs, I also used the spacers that come with it to make it fit the contour of the floor, the only way it would fit was a little close on the passenger side, but i went ahead with it. I checked my tranny, and crossmember mounts, everything is tight? Now my motor mounts are pretty bad, And im going to replace with some vert mounts, I doubt that will solve the problem completely being how hard it hit's now, I really dont want to destroy a 300$ d/s, seems a device made to protect it, is now destroying it. I dont want to have to re-drill mounting holes, but looks like i might have too, what do you guys think? thnx. __________________ X-Texas highway patrol ssp 1990 coupe - exploder Gt-40 iron heads, Explorer intake, 19 lber's. E-cam. crane 1.7 rollers. 190fp. 75mm maf. 65mm tb, tubular subframe connectors, mac cai, Asp crank pulley, T-5, king cobra clutch, flowtech 1-5/8 unequals, mac X-pipe Frpp driveshaft, lakewood Lca's. race weight 3,160 12.69 @ 107.35, 1.71 60' 26x8.5 drag's 3.90 gear 13.20 @ 106.91 - 235/60/15 firestones 2.3 60' 3.27 gear

09-11-2006, 01:15 AM	#2
Dark_5.0 Registered Member Join Date: Apr 2001 Location: Staging lane Posts: 4,337	Re: Driveshaft banging the saftey loop? The aluminum driveshaft is bigger around than the factory driveshaft. I have the same safety loop and mine mounted just like you described. If it is scraping the mounting bolts I would try grinding down the head of the bolts to gain clearance. Before I drilled more holes in my car I would cut and modify the safety loop. __________________ 92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer

09-11-2006, 09:11 AM	#3
Jeff Chambers Moderator Join Date: Aug 2000 Location: Milan, OH Posts: 2,699	Re: Driveshaft banging the saftey loop? I always do away with the bolts all together and weld the loop up. It gives the clearance necessary for the aluminum driveshafts. __________________ Jeff Chambers 1990 Mustang GT 10.032 Seconds / 137.5 MPH 14-time Street Warrior World Record Setter CRT Performance 2001 Tropic Green Mustang GT - 12.181 / 113.2 MPH 2002 Ford F-250 Crew Cab 7.3l Power Stroke - 17.41@77.2 "There's nothing boring about a small block automatic shifting gears at 9400 rpm!"

09-12-2006, 02:37 PM	#4
Coupe50h Registered Member Join Date: Aug 2002 Location: SanAntonio, Tx Posts: 957	Re: Driveshaft banging the saftey loop? Thanx for the reply, I can weld it no problem, but dont i need it to be removeable? or can i just slide out the d/s, if i ever need it out? Thanx dark, and jeff, I Will try grinding the bolt head first, then i'll remove them if that dont work, lol, when you hear a loud bang like that on a launch, it can scare the crap outta ya __________________ X-Texas highway patrol ssp 1990 coupe - exploder Gt-40 iron heads, Explorer intake, 19 lber's. E-cam. crane 1.7 rollers. 190fp. 75mm maf. 65mm tb, tubular subframe connectors, mac cai, Asp crank pulley, T-5, king cobra clutch, flowtech 1-5/8 unequals, mac X-pipe Frpp driveshaft, lakewood Lca's. race weight 3,160 12.69 @ 107.35, 1.71 60' 26x8.5 drag's 3.90 gear 13.20 @ 106.91 - 235/60/15 firestones 2.3 60' 3.27 gear

09-14-2006, 07:22 PM	#5
68Falcon Bracket Racer Join Date: Apr 2003 Location: Loxahatchee, Florida Posts: 210	Re: Driveshaft banging the saftey loop? You can slide the driveshaft out with the loop welded in. No need to remove the loop just to take the driveshaft out. __________________ Streetcar 90 Notch 69 351W .030 over. Untouched 69 351 heads Crane cams duration @050 216in 228ex. valve lift .484in .512ex. Untouched RPM air gap intake with Holley 750 DP. Hooker headers. C6 trans. 8.8 with 3.73, Strange 31spline alxes and spool Racecar 68 Falcon 10 point Cage and FE487ci 13.6:1 compression. .740 lift 276in 284ex duration @.050 in the Works. 428CJ heads. Port O Sonic intake with 1050 Dominator. PowerGlide trans.

09-16-2006, 12:42 PM	#6
Coupe50h Registered Member Join Date: Aug 2002 Location: SanAntonio, Tx Posts: 957	Re: Driveshaft banging the saftey loop? Ah i see now, Thanx, Also after looking at it, i can just weld the top half of the loop in, and leave just four botom bolts...thanx alot __________________ X-Texas highway patrol ssp 1990 coupe - exploder Gt-40 iron heads, Explorer intake, 19 lber's. E-cam. crane 1.7 rollers. 190fp. 75mm maf. 65mm tb, tubular subframe connectors, mac cai, Asp crank pulley, T-5, king cobra clutch, flowtech 1-5/8 unequals, mac X-pipe Frpp driveshaft, lakewood Lca's. race weight 3,160 12.69 @ 107.35, 1.71 60' 26x8.5 drag's 3.90 gear 13.20 @ 106.91 - 235/60/15 firestones 2.3 60' 3.27 gear

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