Originally posted by Bry5on
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Black & Tan 332iT
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Thanks to George Hill I believe we’ve found the remaining flexiness in the front suspension. George has an e46 front clip handy (the man has dedication), so during a visit to TX we ran a test yesterday to prove my next hypothesis. With the fender off, we attached a dial indicator as in the image below, measuring longitudinally, then I pushed on the fender mount vertically with about 40lbs by hand. You could see the dial indicator move .002” from this ~40lb push. This is significant because just sitting on the ground, the car sees about 20x that load, meaning it’s displacing about .040” or a full millimeter from just placing the car on the ground. View of what’s behind the right front fender, with dial indicator setup:
So every time your suspension loads/unloads or hits a pothole/bump, this joint is flexing and allowing the strut tower to move up/down out of sync with the car. This will be noticeable in driver feel.
So we took some scans, including of the other side which had a pothole damaged tower, and I’m going to design some gusseting that will live invisibly under the fender to stiffen the front suspension up nicely.
Thanks George!‘02 332iT / 6 | ‘70 Jaguar XJ6 electric conversion
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Oh man - that's huge! Well done - very impressive to have figured that out! The E46 is going to be like a platform that's 10 years younger by the time you're done with it!2005 ///M3 SMG Coupe Silbergrau Metallic/CSL bucket seats/CSL airbox/CSL console/6 point RACP brace
Build Thread: https://nam3forum.com/forums/forum/m...e46-m3-journal
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Originally posted by Bry5on View PostAlright, here’s a link for those in the US where you can purchase this v-subframe brace directly if you so desire: https://cart.sendcutsend.com/styxqbkx1nth
Reminder, this link is not me selling anything, I make no money on this, and I’m not affiliated with sendcutsend other than really liking their service.
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Originally posted by discoelk View PostGood updates with the braces. Out of curiosity, did the front clip have the windshield and lower subframe brace installed?
I’m planning a modified re-run of this experiment when I pull my fenders off. Basically set the dial indicator up and watch it as I lift the car up and place it back on the ground. We’ll see what happens!‘02 332iT / 6 | ‘70 Jaguar XJ6 electric conversion
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