jevs Posted February 24, 2015 Share Posted February 24, 2015 (edited) Looking for some pictures and part numbers of what you did to mount your side exhaust. Mine just has a blank flat strap coming horizontally off the bottom of the exhaust that is suppose to bolt to the floor. Your supposed to make a rubber washer out of a hose to go between this tab and the floor. I have a couple issues. One is that my side panels required a spacer between the floor panel and the lower lip to make them a tight fit. This brings it down a little and the exhaust tab has a little extra to clear there. I can either trim this away in the tab area, or just mod the flat bracket a little. Another option would be to change to a side hanging setup instead of a bottom mount. I just wonder if a rubber washer will let the exhaust move enough? It still has a metal mechanical connection with a nut and bolt through all of it as opposed to an actual rubber isolator. Anyone have this style of exhaust to show what they did and some testimony on how it is holding up over time as far as leaks, header leaks, cracks, etc.? Edited February 24, 2015 by jevs Link to comment Share on other sites More sharing options...
jevs Posted February 24, 2015 Author Share Posted February 24, 2015 (edited) I was looking around and found this. I think if the bracket was sandwiched between two rubber pads like this, that might be good enough. Just making sure the bracket hole is slightly bigger than the bolt so it can rock a tad without the bolt needing to move. I think this is what I will do.... Edit....not sure I like this, the more I think about it. It is not going to be truly isolated and will have to hang under the car over an inch by the time you get a fastener on it etc. Edited February 25, 2015 by jevs Link to comment Share on other sites More sharing options...
scannon Posted February 24, 2015 Share Posted February 24, 2015 There are some poly bushings that will require a larger hole in the bracket but will isolate the bolt from metal to metal contact and still allow some flex for when the engine torques over. You would likely need to make the bracket wider to accommodate them. http://www.speedwaymotors.com/Poly-Exhaust-Hanger-Grommets,46327.html http://static.speedwaymotors.com/RS/SR/Product/76/91000118_L_160b9bec.JPG Link to comment Share on other sites More sharing options...
HankMauel Posted February 24, 2015 Share Posted February 24, 2015 Here is a long shot of the clamps I used. They are 3"diameter stainless steel with mountings back under the chassis. If you'd like, I can get some close up photos and maybe find a name/part number. Link to comment Share on other sites More sharing options...
jevs Posted February 25, 2015 Author Share Posted February 25, 2015 How are those attached and isolated underneath? I don't need any clamps. I just need to properly mount the horizontal strap to the floor with proper isolation. Link to comment Share on other sites More sharing options...
jevs Posted February 25, 2015 Author Share Posted February 25, 2015 (edited) There are some poly bushings that will require a larger hole in the bracket but will isolate the bolt from metal to metal contact and still allow some flex for when the engine torques over. You would likely need to make the bracket wider to accommodate them. http://www.speedwaymotors.com/Poly-Exhaust-Hanger-Grommets,46327.html How do you think those would work bolted flat to the floor with the strap horizontal (flat)? Oh, and I found some cheaper here and they are suppose to be a "Super High Temp" (blue ones that are not shown). http://www.welderseries.com/blog/online-store/exhaust-grommet/ Another thing to note, that whatever is done here will be hanging below the floor pan....so getting very big is also an issue.......unless you consider how far down the oil pan is Edited February 25, 2015 by jevs Link to comment Share on other sites More sharing options...
xcarguy Posted February 25, 2015 Share Posted February 25, 2015 (edited) jevs, I currently have a flat ss strap attached to each of my exhaust. Each strap is attached to an aluminum L-brackets. The brackets, in turn, are bolted to the sides of the car (bolted to the bottom frame rail); simple, yet has worked well thus far. That is the way the car arrived after I purchased it back from Mike Sharkey. Having said that, this is what I did originally; perusing through these two pages may spur and idea or two: http://www471.pair.com/stalkerv/gallery2/main.php?g2_itemId=8726 Edited February 25, 2015 by xcarguy Link to comment Share on other sites More sharing options...
scannon Posted February 25, 2015 Share Posted February 25, 2015 How do you think those would work bolted flat to the floor with the strap horizontal (flat)? Oh, and I found some cheaper here and they are suppose to be a "Super High Temp" (blue ones that are not shown). http://www.welderseries.com/blog/online-store/exhaust-grommet/ Another thing to note, that whatever is done here will be hanging below the floor pan....so getting very big is also an issue.......unless you consider how far down the oil pan is The ones I used were red but I don't know that there is any significance to that color. Mine were outboard and the bracket was L shaped and bolted to a Caterham provided weld nut on the lower frame rail. I have since changed to bobbins as they provide for more movement when the engine torques over. Link to comment Share on other sites More sharing options...
jevs Posted February 25, 2015 Author Share Posted February 25, 2015 (edited) This is what I got with the kit. I was hoping not to have to cut it off and re-invent it The bobbin style seems like it would work pretty well, kind of like this (see pic of example), but this is totally different than what I have to work with now. I happen to have an old dry rotted one of those bobbins I saved. I must have known this day was coming.... You can see it won't fit where the strap is now. I would have to do some welding, but it could be located farther back where it will fit. Edited February 25, 2015 by jevs Link to comment Share on other sites More sharing options...
jevs Posted February 25, 2015 Author Share Posted February 25, 2015 jevs, I currently have a flat ss strap attached toeach of my exhaust. Each strap isattached to an aluminum L-brackets. The brackets,in turn, are bolted to the sides of the car (bolted to the bottom frame rail);simple, yet has worked well thus far. That is the way the car arrived after Ipurchased it back from Mike Sharkey. Having said that, this is what I didoriginally; perusing through these two pages may spur and idea or two: http://www471.pair.com/stalkerv/gallery2/main.php?g2_itemId=8726 Do you have a picture of what you have now? I already wasted two nights thinking about this and all day during work. I think it is about time to concede and cut the current bracket off and start from scratch.....sigh, more fab work. I will never get this thing done Link to comment Share on other sites More sharing options...
xcarguy Posted February 25, 2015 Share Posted February 25, 2015 Do you have a picture of what you have now? I already wasted two nights thinking about this and all day during work. I think it is about time to concede and cut the current bracket off and start from scratch.....sigh, more fab work. I will never get this thing done Went out to the shop and snapped a couple of pics. As I said, simple, but works well. . . . . . You'll be finished and driving sooner than you think. :cheers: Link to comment Share on other sites More sharing options...
xcarguy Posted February 25, 2015 Share Posted February 25, 2015 jevs, You may want to take a look at these hangers from SR. They come in a variety of sizes and look great: http://www.summitracing.com/parts/stw-th903bc/overview/ Link to comment Share on other sites More sharing options...
jevs Posted February 25, 2015 Author Share Posted February 25, 2015 Went out to the shop and snapped a couple of pics. As I said, simple, but works well. . . . . . You'll be finished and driving sooner than you think. :cheers: Is there any isolation in that configuration? Link to comment Share on other sites More sharing options...
jevs Posted February 25, 2015 Author Share Posted February 25, 2015 I have just been thinking of ways to use that snapper style. All the prefab ones like that are not in the right orientation that I have found so far. It needs to be more in the orientation like a motorcycle exhaust hanger is....I can make that though. I am going to check around locally in the morning to see if I can find some snapper style hangers, if not, I will order some. They are cheap, I just hate to wait on them. I think I might be able to do something with those that looks better than the bobbin style. Link to comment Share on other sites More sharing options...
xcarguy Posted February 25, 2015 Share Posted February 25, 2015 jevs, You must be reading my mind..........would be nice if you could see how they're mounted. :jester: Link to comment Share on other sites More sharing options...
jevs Posted February 25, 2015 Author Share Posted February 25, 2015 Found a link mounting the way I need to using two of the snapper style: http://i0.wp.com/www.welderseries.com/blog/wp-content/uploads/shopp/images/10308177_680854675305212_8058138231106402790_n.jpg Link to comment Share on other sites More sharing options...
xcarguy Posted February 25, 2015 Share Posted February 25, 2015 Found a link mounting the way I need to using two of the snapper style: http://i0.wp.com/www.welderseries.com/blog/wp-content/uploads/shopp/images/10308177_680854675305212_8058138231106402790_n.jpg I like that; clean, simple. Link to comment Share on other sites More sharing options...
coffee break Posted February 25, 2015 Share Posted February 25, 2015 Aside from the isolator used, the attachment to the pipe is important. The strap style clamp xguy showed spreads the load over the more of the pipe than a welded location. I had a muffler shop do some work and they welded a rod type mount to the pipe. The pipe fractured at the weld and failed after a while and I have modified it to use a U-bolt clamp and a semicircular cradle. Link to comment Share on other sites More sharing options...
jevs Posted February 25, 2015 Author Share Posted February 25, 2015 I ordered 2 of these to experiment with (4 mounts total): JEGS Performance Products 309025 Snap Grommets http://www.jegs.com/i/JEGS+Performance+Products/555/309025/10002/-1 $12.97 shipped And 4 of these to experiment with: GEX7251 Exhaust Mount Rear Bobbin - Mini And Mini Cooper S http://www.minimania.com/part/GEX7251/Exhaust-Mount-Rear-Bobbin---Mini-And-Mini-Cooper-S $13.00 shipped I think the rubber ones are going to end up being better to let the system flex more, but I wanted to get both to see. I did do a bunch of reading last night. A lot of Cobra guys have experienced side pipe issues and there are a ton of not so good methods out there for attaching them. They do have more room and more ways to hide the setup though. The better methods I saw would not really work on my car since the bottom is flat and no where to tuck stuff up. Link to comment Share on other sites More sharing options...
coffee break Posted February 25, 2015 Share Posted February 25, 2015 Here are a few photos of my mounting. Link to comment Share on other sites More sharing options...
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