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AussieValk
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« on: September 27, 2009, 05:03:29 AM » |
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I've swapped the exhaust to truck stacks and it looks like the heat shield that goes under the hard bag is going to hit the pipe. I think I saw someone here who ran without the heat shield so I wanted to know the pro's and con's (may have been some time ago). If I leave it out I will have about 1/8" gap between the pipe and the bag at the lowest point (the rear of the bag where it steps down). Is it worth lining the underside of the bag with heat proof tape? Will the bag 'melt' if I leave it unprotected?
Thanks.
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DFragn
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« Reply #1 on: September 27, 2009, 05:27:16 AM » |
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Would they melt? Dunno. Maybe warp, given the right conditions. The tape would be of some help.
Are you sure you haven't got some fudging room to tweak the exhaust mounts?
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Foozle
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« Reply #2 on: September 27, 2009, 05:30:01 AM » |
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I run 4" truck stacks under OEM hardbags - and the fit is tight. I lined the bottomside (underneath) of the heat shields with reflective, aluminum tape - with the idea that the heat would be reflected downward. I'm not sure if this has had any effect, but I've not had a problem with the bags getting hot or melting. A lot of guys run this same set-up, so I can't imagine there's any great risk to the bags if you left the shields unmodified. Just my 0.02. Terry
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Thunderbolt
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« Reply #3 on: September 27, 2009, 05:45:47 AM » |
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I put the chrome truck stack tips from air-flo. I also thought they were going to be too tight. I cut the last couple of inches off of the heat shields off and then decided that they would still be too close. I should have left them stock. What I did to get more room was to elongate the mounting holes in the muffler hangers with a rat tailed file. I filed the upper part of the top hole and the lower part of the bottom holes. Then I put pressure on the pipes downward as I tightened the bolts. This made enough room that I have had no problems with the pipes being too close.
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fudgie
Member
Posts: 10613
Better to be judged by 12, then carried by 6.
Huntington Indiana
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« Reply #5 on: September 27, 2009, 07:18:24 AM » |
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Mine did the same thing after I swapped tip. So I bent the shield up a little. You may have to bend the corner of the shield out as to not rub the bag. When I switched to truck stacks I just drilled out the hanger holes a little wider. all is good now.
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 Now you're in the world of the wolves... And we welcome all you sheep... VRCC-#7196 VRCCDS-#0175 DTR PGR |
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quexpress
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« Reply #6 on: September 27, 2009, 09:22:00 AM » |
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4 or 5 years ago, I kept having problems with the stacks hitting the bottom of the heat shields. I decided to cut the rear "stepped" portion off these heat shields and have never had a problem with that since then.  |
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I still have a full deck.
I just shuffle slower ...
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Steve K (IA)
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« Reply #7 on: September 27, 2009, 11:09:45 AM » |
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I did the Mark T mod. Only tool needed was a hammer used on the heat shield to flatten out a few areas in the metal.
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 States I Have Ridden In |
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John Schmidt
Member
Posts: 15223
a/k/a Stuffy. '99 I/S Valk Roadsmith Trike
De Pere, WI (Green Bay)
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« Reply #8 on: September 27, 2009, 02:47:02 PM » |
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4 or 5 years ago, I kept having problems with the stacks hitting the bottom of the heat shields. I decided to cut the rear "stepped" portion off these heat shields and have never had a problem with that since then. About as many years ago....4-5 at least, I noted the rear edge of the bags heat shield were making contact with the truck stacks. My solution, I also cut off that stepped portion of the very rear of the heat shield. It's been that way since with no impact on the bags whatsoever. My stacks are 38" which puts the end of them about 4" past the bags. That means the bags don't get a direct blast of exhaust. |
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Udo
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« Reply #9 on: September 27, 2009, 03:45:27 PM » |
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I have Tsukayu bags. They don´t have shields from the factory. I thought, i need something. So, i made from thin polished ss plates my own shields, and glued them under the bags with high temp silicone. Was it necessary? No idea, the bags are fine....
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AussieValk
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« Reply #10 on: September 27, 2009, 04:56:00 PM » |
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Thanks for all the reply's. I remember seeing the flattened out shields a long time back but couldn't find the article (thanks for the link). I sounds like the bags will stand up to some heat if some of you are cutting off the step down part of the shield, and they suffered worse heat abuse with the stock tips finishing under the bags, so I reckon that'll do. If I lower the exhaust mount I'll get too much complaint from the passenger who already has trouble reaching the boards with her short legs. I will also try a spacer or two under the bag mounts. Thanks again. |
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AussieValk
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« Reply #12 on: September 28, 2009, 10:29:04 PM » |
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Everything back together and fitting perfectly. Hammered the heat shields as in MarkT's notes, and slotted out the hanger brackets as suggested and now there's plenty of clearance. Thanks to all who contributed. I could never work out why Honda would design a bag/exhaust system that would inevitably end with problems. Every year I'd have to pull the bags off to clean the exhaust gas residue (that brown/golden stain) from the underside and the back. They should have been designed with truck stacks in the first place. I'm lookin forward to less unneccesary cleaning... |
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