Universal exhaust bushings.

[Toaster]

So I've complained about unusually excessive vibrations in my 2019 Fiat 124 Spider. I recently replaced the flywheel and the clutch disc and pressure plate. Helped a good amount, by there's still some there. Especially in the shifter. Now, the only bushings the whole exhaust system has is one rubber hanger for the central pipe, and 4 for the rear. I've seen cars with some bushings in the front, which my car doesn't come with. I've tried looking up some sort of universal bushings but can't find any. The cross under pipe bolts from the manifold to a bracket on the transmission. What is like to know is if just any rubber piece could be stuck between them? Or is theres done universal bushings. The buzz has been transmitting to the pedals and foot well which has been bothering me. I've looked at aftermarket pipes and stuff, but don't want to spend hundreds on things that don't make much of a difference.

 

[RedSpider]

Are you meaning putting a bushing between the crosspipe bracket and the transmission bracket? I dont see how that would work, there isnt much room there. Actually even if it would be made to work I wouldnt do it. You dont want the crosspipe to have any ability to move around or you're going to get cracks in some very expensive pieces up front. The only flexible part of this exhaust system is the joint between the midpipe and the crosspipe and you definitely want the flex there, but nothing from that point forward.

There are other hangers available for the single midpipe hanger but they are poly, and removing the stock relatively soft rubber hanger and putting a harder poly piece in its place isnt going to help this issue.

I still think something else is going on with this more related to the clutch. Or maybe a bad engine or transmission mount...? I have an automatic so I'm of limited help but I can tell you sitting at a stoplight, unless I have the a/c on, I can barely feel the engine running or any other vibration at all.

Try this: Remove the metal tray under the engine, and put a jack under the oil pan and put a small piece of wood between the jack and the pan, and using the jack raise the engine up just a tiny bit with the engine running and see if that gets rid of any of the buzz. If it does, start looking at the engine and transmission mount(s). If that doesnt change anything, you're probably looking at the dreaded flywheel/clutch combo.

Also are you active on the 124Spider forum? If not, hop on there and make a post and get some more Spider-specific eyes on this and maybe the folks there can chime in.

 

[Toaster]

Engine mounts are flying according to one shop. They're not broken and the rubber definitely doesn't look bad. Theres no bushings on the trans mounts, so you'll feel every combustion event from the engine in the stick. The mount is a long aluminum bar that holds the trans to the frame and differential. It only has about 40,000 mi on it. I recently replaced the flywheel and the whole clutch assembly because the last owner completely smoked it. I'm wondering if it's a bad fuel mixture because every time I start it I smell rich unburnt fuel. I replaced the air filter and the spark plugs are good so I'm not sure what that could possibly be. Although, The gap on the spark plugs are 0.025 which is the way it comes out of the box, but for the car, it has to be 0.023. I'm wondering if that difference could be an issue.