Exhaust brackets/braces snapping with cammed motor
Thread Starter
TECH Apprentice
iTrader: (1)
Joined: Sep 2016
Posts: 322
Likes: 3
From: Leicester, United Kingdom
Exhaust brackets/braces snapping with cammed motor Hi Guys,
im currently having issues with my custom over the axle duals which are basically a copy of the speed engineering system. For those familiar with the SE duals, there is a bracket/brace which joins the 2 pipes together where it rises up to go over the axle. As my motor is cammed and lopes a lot at idle, the exhaust shakes a bit and it keeps snapping the welds on that bracket. I had it redone and an extra bracket welded after the over the axle bend to try and take some stress away. Both of these have snapped today. The exhaust hangs on rubber hangers and has plenty of wobble so it’s not fixed solid so in theory shouldn’t be overly stressed on welds.. Anybody got any recommendation for me to stop this happening?
im currently having issues with my custom over the axle duals which are basically a copy of the speed engineering system. For those familiar with the SE duals, there is a bracket/brace which joins the 2 pipes together where it rises up to go over the axle. As my motor is cammed and lopes a lot at idle, the exhaust shakes a bit and it keeps snapping the welds on that bracket. I had it redone and an extra bracket welded after the over the axle bend to try and take some stress away. Both of these have snapped today. The exhaust hangs on rubber hangers and has plenty of wobble so it’s not fixed solid so in theory shouldn’t be overly stressed on welds.. Anybody got any recommendation for me to stop this happening?
Thread Starter
TECH Apprentice
iTrader: (1)
Joined: Sep 2016
Posts: 322
Likes: 3
From: Leicester, United Kingdom
It initially broke the stainless steel plate. Cracked clean in two. Must have been like a stress fracture or something. Since then, the breaks have always been on the weld bead on the original bracket and on the newer second bracket it was another clean break / crack of the stainless metal not the weld.
Thread Starter
TECH Apprentice
iTrader: (1)
Joined: Sep 2016
Posts: 322
Likes: 3
From: Leicester, United Kingdom
TECH Regular
Joined: Mar 2015
Posts: 487
Likes: 10
I would consider maybe a thicker set of brackets although then it may just rip the tube it is welded too rather than the bracket itself.
Have you checked your motor mounts? Excessive slop there could definitely cause issues.
There is also the possibility your axle is bumping it under hard compression.
Have you checked your motor mounts? Excessive slop there could definitely cause issues.
There is also the possibility your axle is bumping it under hard compression.
I would consider maybe a thicker set of brackets although then it may just rip the tube it is welded too rather than the bracket itself.
Have you checked your motor mounts? Excessive slop there could definitely cause issues.
There is also the possibility your axle is bumping it under hard compression.
Have you checked your motor mounts? Excessive slop there could definitely cause issues.
There is also the possibility your axle is bumping it under hard compression.
Trending Topics
Yeah, definitely sounds like motor mounts are gonna be the better fix if it's torquing so much that it's snapping the exhaust brackets. If the motor is moving that much at idle I can only imagine what it looks like at WOT.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
I was going to suggest, if you haven't already done so you may want to swap to poly motor mounts. Being rubber, and as old as they are I'm sure if you still have stock mounts there's probably a ton of slop in them which will move both the exhaust AND intake piping a lot and bang/break stuff.
