Idler arm hits on header
Had a similar problem.
We have Hooker 'Competition' (cheap series) on our 1972 Dart. We installed both new motor mounts and a new transmission mount, which were just standard parts store junk (which might be most of the problem?!?)
Everything fit great with no rubbing anywhere, however after a few weeks here is what happened:
Our Dart is supercharged (360 / T/F-727 / 8-3/4" rear) so it also has a little more weight and more power/torque as well (than a standard n/a small block engine) which is accelerating the death of the cheap mounts even quicker.
About 30 seconds with a MIG welder and they were like new again.
I simply sandwiched a couple of large diameter flat washers between the engine & motor mounts (or was it motor mounts & K-memeber?!?) on both sides. Just enough to raise the engine up a touch (~1/8") so it would no longer force the header to contact the nut/stud under hard launch conditions. Even when we took it to the drag strip with slicks on the car it doesn't touch anymore. It was a quick/easy/cheap fix.
They clear everything else great, no other problems.
With good quality urethane transmission & motor mounts it probably wouldn't have even contacted it in the first place, especially without the added heft of the supercharger set-up.
About a week after we installed them, the rear main seal developed a nasty leak. Talk about fun trying to get the oil pan in & out with the headers. Ended up having to loosen them up and it was still a b!tch.
Had a similar problem.
We have Hooker 'Competition' (cheap series) on our 1972 Dart. We installed both new motor mounts and a new transmission mount, which were just standard parts store junk (which might be most of the problem?!?)
Everything fit great with no rubbing anywhere, however after a few weeks here is what happened:
Our Dart is supercharged (360 / T/F-727 / 8-3/4" rear) so it also has a little more weight and more power/torque as well (than a standard n/a small block engine) which is accelerating the death of the cheap mounts even quicker.
About 30 seconds with a MIG welder and they were like new again.
I simply sandwiched a couple of large diameter flat washers between the engine & motor mounts (or was it motor mounts & K-memeber?!?) on both sides. Just enough to raise the engine up a touch (~1/8") so it would no longer force the header to contact the nut/stud under hard launch conditions. Even when we took it to the drag strip with slicks on the car it doesn't touch anymore. It was a quick/easy/cheap fix.
They clear everything else great, no other problems.
With good quality urethane transmission & motor mounts it probably wouldn't have even contacted it in the first place, especially without the added heft of the supercharger set-up.
About a week after we installed them, the rear main seal developed a nasty leak. Talk about fun trying to get the oil pan in & out with the headers. Ended up having to loosen them up and it was still a b!tch.