Chaharly Posted March 12, 2019 Share #1 Posted March 12, 2019 Hey Yall! Tore the headers off the bike to replace the starter and the thermostat housing. The starter was fine until I tried to change battery cables and I broke the stud clean off the old one. Ordered a new one off ebay for 37 bucks that came off an 06 RSV with about 30k miles. The thermostat housing had cracks in it, and when me and dad were in Colorado last year would just puke coolant when we started it 2 of those high altitude low tempurature mornings. Anyways, I pulled the curb side header off and its dented up pretty good on the underside. I was reading online that dents dont effect flow as much as bends do, but these are pretty significant. Should I replace it or do yall think its good? Also I think I'm gonna spray some high temp black on them before I put them back on Link to comment Share on other sites More sharing options...
bongobobny Posted March 12, 2019 Share #2 Posted March 12, 2019 Probably wouldn't hurt to look on eBay to see if you can find some better ones at a reasonable price. There looks like there might be just enough big dents in them to start to restrict flow but probably not that much. I had a pair in fairly good shape, more cosmetic issues than anything else, but I'm not sure if I still have them, and can't get into my shed until the snow melts. I'll look in a couple of days and see if they are still there... Link to comment Share on other sites More sharing options...
Chaharly Posted March 14, 2019 Author Share #3 Posted March 14, 2019 A little online research found that they're pretty cheap! If you got a set layin around let me know and thank ya! Otherwise I'll just hit the ebay route Link to comment Share on other sites More sharing options...
bongobobny Posted March 16, 2019 Share #4 Posted March 16, 2019 I have a pair in fair shape but a lot better than what you have, I'll take pictures a little later and post them. If you want them, how about $25 for the pair shipped?? Link to comment Share on other sites More sharing options...
bongobobny Posted March 16, 2019 Share #5 Posted March 16, 2019 Here they are, far from perfect but serviceable. You could chemically strip them and paint them with high-temperature paint if desired... You may be able to hammer this dent out by clamping in a vise and use a drift tool... Both are scraped on the bottom but not mangled too bad... You will probably need new copper crush collars... Let me know and I can get them shipped out sometime next week. Link to comment Share on other sites More sharing options...
Chaharly Posted March 17, 2019 Author Share #6 Posted March 17, 2019 Wow those are in great shape! I went ahead and ordered a cheap ebay set for about 30 bucks including shipping but yours are in better shape to be honest! I'm kind of on a time frame cuz she's my only bike. I'm sorry for not getting ahold of you when I ordered them:doh: Link to comment Share on other sites More sharing options...
bongobobny Posted March 17, 2019 Share #7 Posted March 17, 2019 Ehh, no skin off my nose, I've had them sitting around for many years. The snow melted enough last week to get into the shed so it was no trouble... Link to comment Share on other sites More sharing options...
videoarizona Posted March 18, 2019 Share #8 Posted March 18, 2019 (edited) There are some videos on line from some guys who like to try and debunk myths and ideas regarding engines. One of the videos ....they talk about dents in headers. Discussion started when guys would cram an engine is an area where it shouldn't fit, so they would dent the headers to get the motor in. People were saying you are losing power bashing headers. So....They threw a motor in a dyno and got the hp and torque. Then bashed one header. No change. Bashed another. No change. Did all 8 ... No change. So much for that.... At least according to them. Interesting food for thought. Edited March 21, 2019 by videoarizona replaced a "G" with an "F" Link to comment Share on other sites More sharing options...
Chaharly Posted March 20, 2019 Author Share #9 Posted March 20, 2019 There are some videos on line from some guys who like to try and debunk myths and ideas regarding engines. One of the videos ....they talk about dents in headers. Discussion started when guys would cram an engine is an area where it shouldn't fit, so they would dent the headers to get the motor in. People were saying you are losing power bashing headers. So....They threw a motor in a dyno and got the hp and torque. Then bashed one header. No change. Bashed another. No change. Did all 8 ... No change. So much for that.... At least according to them. Interesting good for thought. Hmmm... I think I'll slink over to the youtube and see if I can find that vid. Curious to see how much they dented em Link to comment Share on other sites More sharing options...
HermanK84VR Posted March 20, 2019 Share #10 Posted March 20, 2019 I haven't Cut the Venture pipes apart yet but when I split my 1984 Virago exhaust, the front header pipe was double walled, the inner pipe was about 1/4 smaller in diameter. from what I have been told they do this to keep more heat within the exhaust pipe to help it exhaust quicker it is the same theory applied when using pipe wrap on your headers. the quicker the exhaust exits the quicker it can inhale the next Charge= better performance and MPG. so likely the dents will not have much affect. HermanK84VR Link to comment Share on other sites More sharing options...
bongobobny Posted March 20, 2019 Share #11 Posted March 20, 2019 The "dent" factor is probably more in theory than in reality. It will effect the scavenging or "bell" effect but unless you have a perfectly tuned total exhaust system the effects will be minimal... Link to comment Share on other sites More sharing options...
videoarizona Posted March 21, 2019 Share #12 Posted March 21, 2019 The "dent" factor is probably more in theory than in reality. It will effect the scavenging or "bell" effect but unless you have a perfectly tuned total exhaust system the effects will be minimal... That's my thinking, too. Link to comment Share on other sites More sharing options...
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