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Another roll restrictor question

C

Cobra99

New CEG'er
Joined
May 14, 2008
Messages
18
I've done the research to know that the bucking I feel in my car (at low throttle/RPM in any given gear) is likely a result of flexing front and/or rear roll restrictors. My question though is what is "normal" for these cars? The car is a 2000 (SVT), but it only has about 66,000 miles. I've had it for about 2k miles so far. I wouldn't think this would be enough miles to have worn out the stock bushings but in my opinion, the bucking is extremely excessive. At a good low RPM pace in 5th gear while cruising it constantly surges forward and back and I'm ready to fix it. I'm on the verge of ordering new parts from Team Ford, but I'd hate to replace the restrictors only to find that what I've got currently is what perfectly fine stock mounts feel like.

Basically, should factory new mounts give way to no bucking, or will it still be there to some extent?

Hope that makes sense, and thanks.
 
Right....well, even though the car only has about 66,000 miles, there's no way the factory roll restrictors should be this bad. If so I don't imagine many potential sales could have made it past a test drive.

Can someone at least confirm I have the correct part #s?

Rear restrictor:
F7RZ6068BA

Front restrictor:
F8RZ6049AA

Thanks.
 
You might be better of to get inserts from bat or poly filled replacements from Pole120. It might work out quite a bit cheaper.
Also, you should be able to look at the mounts to see whether they're shot or not. On my car the rear one was obviously cracked and sagging when I replaced it.
 
Thanks for the ideas. I'll have to put the front end up on jackstands this week and take a look at the mounts up close. If they look to be in decent shape I suppose it might be worth trying the HD inserts from BAT. Regarding the poly-filled inserts from Pole120, I thought I saw in a thread somewhere where he wasn't making them anymore but I might be mistaken.

Looking at the engine while revving it, it doesn't appear to move excessively, but it's noticeable enough while driving to make passengers question what's wrong with the car every time they ride in it for the first time.
 
Just revving it in neutral won't wind up the drivetrain much since in this situation there is only torque from the internal friction and inertia in the engine. The torque going to the wheels (and resisted by the ground) is what places the highest loads on the roll restrictors to keep the drivetrain from rotating.
 
Even if he's not making them anymore its very easy to do yourself. All you need is some time, a caulk gun, some roof flashing poly and an oven if you want the curing to hurry up.
 
You would have to let off the clutch slowly while keeping the car from stalling while on the brake and someone watchins the engine to really find out where you have a motor/tranny/roll restrictor problem.

Also mileage can't tell you how well the previous owners could handle a 5-Speed or if they beat on it every time they took the car out. I would be more concerned about that, shift cables and so on if the engine is rocking and other possible repairs maybe in the future. Atleast this gives you an idea on how the car was treated.
 
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