Just burn it.








:D

Toss the headers and get some that fit right. Who makes those?

Tried it..........epic fail............again.

Doug's D368's..........they fit right.

http://photos.smugmug.com/photos/i-9...9s6ZtPV-XL.jpg

Solid mounts in your reverse burnout street car? Interesting..... :popcorn2:

any witness marks?

Take another look, is there any part of the engine/trans touching the body? Trans bellhousing bolts? The ones on the drivers side.

Solid mounts transmit alot of NVH.

http://www.acurazine.com/forums/imag...ies/finger.gif


:cheers:

Just to clarify regarding witness marks......the motor is still solid mounted.

The vibe in the throttle is most noticeable when cruising at highway speeds of 60-75 mph while using light on/off throttle inputs to maintain speed or following distance.

To the best of my knowledge there are no contact points as I clearanced/smoothed the firewall when I installed the transmission and I've had it out once after the initial install and there's good clearance around the bellhousing bolts.

No witness marks on the steering box or idler arm.

I've 'heard' the urethane mounts are pretty rigid but those clearances are pretty tight, thus why I'm leaning to replacing the right side only and see if anything changes.

even if you change one it won't make much difference since the other side is solid mounted. It would if you had a hinge or spring mount that will flex.

One of the ways to find the frequency of the vibration and with some mathematical calculations you can determine if its engine, pulley or rotational issue. A simple tool for measuring the vibration frequency is the sirometer you can get one from Briggs & Stratton shops.

We use to use them to determine and narrow down causes of vibrations in Dodge diesel trucks.

I have newish poly mounts on both sides in my car and I have witness marks where my header contacts my steering shaft...which has over a half inch clearance when sitting static.

Being all too familiar with solid mounts to cure clearance issues on other cars, I'm tempted to say you might need to learn to live with the vibration if they are the cause. You've gots some tight spaces there...