jleamont Report post Posted September 26, 2016 While tackling the exhaust manifold replacement this weekend I noticed my cooling system upper and lower hoses are mostly pre bent metal. Both the upper and lower look like they will need to be replaced soon. I'm surprised how bad they have become in the last two years, scaly rust build up. Any suggestions on what to use (beyond calling REV for a direct replacement, assuming its available) They look like automotive exhaust pipe. Share this post Link to post Share on other sites
kaypsmith Report post Posted September 26, 2016 Stainless steel would be nice, but don't know about availability, if pipe is available most muffler shops could handle the bend. Share this post Link to post Share on other sites
jleamont Report post Posted September 26, 2016 Kay, I was considering the same, my only concern would be the rib on the end to help hold the hose onto the pipe. I have local exhaust shops in the area that could probably handle it other than the rib. Share this post Link to post Share on other sites
kaypsmith Report post Posted September 26, 2016 It would be a little tricky to force the hose over it, but just a very minimal flare could be used, or place the pipe before bending in a cradle, and run a very small heliarc bead on each end in the appropriate distance from the end, I know someone who has this equipment and is capable. In earlier years most of these pipes were made of brass. Share this post Link to post Share on other sites
wildebill308 Report post Posted September 26, 2016 28 minutes ago, jleamont said: Kay, I was considering the same, my only concern would be the rib on the end to help hold the hose onto the pipe. I have local exhaust shops in the area that could probably handle it other than the rib. I would go with stainless if available. Just make the tubing a little longer and you probably won't have a problem. Check with any local tubing shop they may have a tool to roll the rib in. Bill Share this post Link to post Share on other sites
manholt Report post Posted September 27, 2016 Joe, rust build up? Try spraying with your Pro 1...it, per you, brought back your original manifold, to it's pre use color! Carl Share this post Link to post Share on other sites
jleamont Report post Posted September 27, 2016 Yea, but its painted and the rust is built up behind that and I'm scared to try and scrape it off. Share this post Link to post Share on other sites
jleamont Report post Posted September 27, 2016 I'm worried it will start to leak Share this post Link to post Share on other sites
manholt Report post Posted September 27, 2016 Good reason to replace...so have pipe and parts at hand, then try Pro 1....if it leaks, no problem! If it don't, then you still have everything on hand for future! Share this post Link to post Share on other sites
hermanmullins Report post Posted September 27, 2016 Quote If I think there is a problem and I have the parts I would go ahead and fix it right then. I for one, don't like surprises when on the road. Herman By the way Carl, How is that new review mirror working out? Share this post Link to post Share on other sites
jleamont Report post Posted September 27, 2016 Yea, I figured its time to replace them. Better at home than on the side of the road. Share this post Link to post Share on other sites
jleamont Report post Posted September 27, 2016 I called REV yesterday, no longer available. Once we settle down for the year I will pull them off and have them made up in Stainless. We still have two small trips planned both within 100 miles from home, I don't want to fool with it until after the season. Share this post Link to post Share on other sites
hermanmullins Report post Posted September 27, 2016 Sounds to me like a nice long winter project to work on in a heated garage. (a really good heated garage) Herman Share this post Link to post Share on other sites
jleamont Report post Posted September 27, 2016 Heated garage...I wish, my coach is as tall as my garage . Propane heater pointed under the coach, coveralls and a bad attitude. It might just wait till spring. Share this post Link to post Share on other sites
jleamont Report post Posted September 27, 2016 Since I cannot locate any exhaust that is thick enough I may just buy the sections of stainless tubing and pre bent 90 degree pieces and tig them together and just make my own. That will keep me busy and away from my Dune Buggy project. Share this post Link to post Share on other sites
manholt Report post Posted September 27, 2016 Herman. If I remember correctly, you pulled out the nice, slightly cracked mirror and gave it back to the original owner...telling him, "don't worry we can fix that here, so you can get home to Deer Park, TX."! Amazing part was, he believed you! Joe, what? You will give up the warmth of the garage, and your buggy project...for the harsh, cold outside! Tremendous fortitude and commitment from a post 70's area youth...I'm in awe! Carl Share this post Link to post Share on other sites
kaypsmith Report post Posted September 27, 2016 Joe, what OD is the coolant pipes? Pro racing shops usually carry stainless exhaust pipe, and there is a very good source in B'ham. Share this post Link to post Share on other sites
dickandlois Report post Posted September 28, 2016 Kay, Thanks for the info. I would not have been on the same page as a possible source. Rich. Share this post Link to post Share on other sites
jleamont Report post Posted September 28, 2016 Kay, I will put a caliper on it and see. What size exhaust can the typically bend? I was considering 12 or 14 gauge. i don't know why but suddenly I have an urge to polish it so it looks pretty Share this post Link to post Share on other sites
manholt Report post Posted September 29, 2016 Joe, Beer & Wine will do that to you! Like who's going to see it? Carl Share this post Link to post Share on other sites
wildebill308 Report post Posted September 29, 2016 58 minutes ago, jleamont said: Kay, I will put a caliper on it and see. What size exhaust can the typically bend? I was considering 12 or 14 gauge. i don't know why but suddenly I have an urge to polish it so it looks pretty Well I have a problem because I still think of tubing in aircraft terms. So I had to go look up how thick 12 ga was. That is some thick tubing at .109 wall thickness. I would think stainless tubing around .020- .025 would work for your application. Bill Share this post Link to post Share on other sites
kaypsmith Report post Posted September 29, 2016 12 gauge would be pretty thick, nearly 1/8 thick, 11 ga. is 1/8, 16ga. in 305 stainless will be pretty hard to bend but of course tubing is probably 204 which I believe would be ok. Polished would look good, but that is a whollllllllllllllle lot of sailcloth at very high rpm and a lot of water on the brow. Yes Rich, hot rodders use a lot of stainless tubing, both round, square, and some rectangle. E-bay has 2.25 round for exhaust listed. Share this post Link to post Share on other sites
jleamont Report post Posted September 29, 2016 I was considering 12-14 so it could be welded without a bunch of warpage. I found the elbows and straight pipe for sale on the web. I just need dimensions and I will be all set. Ever since I saw the engine bay in a Newell I have wanted to make it shine. The Newell I saw was lined in mirrored stainless steel and everything was shiny . 18 gauge is just a tad thicker than sheet metal. Bill, ever hear of anyone wrapping their exhaust manifolds on a turbo diesel to stop them from cracking? What's your thoughts? Share this post Link to post Share on other sites
hermanmullins Report post Posted September 29, 2016 Joe, Wouldn't wrapping your manifolds hold in the heat and cause more warping and cracking?? Herman Share this post Link to post Share on other sites
