My car is now track only. E36 M3, stock drive train.
Considering aluminum engine and trans mounts. (Why? Cause CAE or RTD shifter.)
Any one have mount and/or chassis cracking problems with aluminum?
Only chassis issues I've heard about with solids are cracked engine mounting arms. Though no context was given to me about age of the car or how long the solids were run before it happened. It was suggested that I add a closer inspection of these points to my typical inspection, nut/bolt track prep.
I've also read that some people have had issues getting the transmission to properly align with the driveshaft/rear end and they have had to shim the mounts with washers; think someone makes an adjustable trans mount but this really is only something I have read about on the forums.
I personally plan to run full solids although my shop did suggest running running one poly transmission mount to reduce the chance of any potential issues.
Thanks. The obvious next question, is hard poly good enough to satisfy a CAE shifter yet soft enough to not cause (possible) chassis/engine-mount-arm cracking.
I found a setup I like with Vorshlag.
Motor Mounts:
https://vorshlag-store.com/collections/bmw-e46-bushings-driveline-mounts/products/e36-46-e92-m3-polyurethane-competition-motor-mounts-pair
Tranny Mounts:
https://vorshlag-store.com/collections/bmw-e46-bushings-driveline-mounts/products/e30-36-46-82-92-polyurethane-competition-transmission-mounts-95a-durometer-set
Feff
The E36 front subframe is known to develop cracks where the motor mounts bolt on, and that can happen with stock rubber mounts. I can't imagine that solid mounts aren't going to exacerbate that tendency. Easy to weld in reinforcements though.
Neil
I don't see the point really. I'd go with delrin. Just as stiff at low frequencies (engine rocking, etc) but much less high frequency buzz.
Fair point! But, I think delrin would be just as hard on the chassis & mounts as aluminum?
Crap. lol.
IMG_20190610_115421.resized.jpg
Looks like the subframe needs to be dropped to weld these in ?
UPDATE: yea, per Turner directions, I see.
Last edited by aeronaut; 06-10-2019 at 02:21 PM.
Yep, subframe needs to be removed. Here's a video I did up on the process to weld on the reinforcements. I couldn't find anything online, so did one up myself.
https://youtu.be/iG0QKQSD1vg
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