shadetree 5,969 Posted May 23, 2020 anyone got a '87-'89 trx350D FOREMAN 4X4 muffler they wanna let go ?. can't be junk !..lol. ( '86 muffler will work also from a fourtrax ). 2 Share this post Link to post Share on other sites
Buckchop 89 Posted May 25, 2020 I may have one, i just bought up a hord of honda 350 4c4 parts from a guy here. Havent even picked it up yet. Headed there later today, says he has exhaust, carbs, racks, frames, bars, unbroken plastics, racks, tires/wheels. Ill send u a mess with my #, u can text me and ill send u pic. 3 Share this post Link to post Share on other sites
Goober 1,555 Posted May 28, 2020 Sorry Shadetree I don’t have a muffler i did find this Cobra muffler—it’s what i have on this last build. You would like it https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F192772323381 Share this post Link to post Share on other sites
shadetree 5,969 Posted May 28, 2020 6 hours ago, Goober said: Sorry Shadetree I don’t have a muffler i did find this Cobra muffler—it’s what i have on this last build. You would like it https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F192772323381 thanks..but no thanks..i wont pay that kinda money for a rusted up non-oem muffler. i will keep looking..not in a hurry. Share this post Link to post Share on other sites
KoolBreeze 62 Posted May 28, 2020 What is the deal with the mufflers on these old bikes? In other words, why aren't there some aftermarket options available? And why can't a person have a muffler shop whip up something custom for them? Share this post Link to post Share on other sites
shadetree 5,969 Posted May 28, 2020 7 minutes ago, KoolBreeze said: What is the deal with the mufflers on these old bikes? In other words, why aren't there some aftermarket options available? And why can't a person have a muffler shop whip up something custom for them? most places like honda, dont want to deal with parts for atvs that are 30 something years old, sooo, they stopped making them these past few years like everything else..lol. as for why they rust like they do ?, i ripped this bad one part last night, the way they designed them ?, i can see why they rust out along the bottom edge. 2 Share this post Link to post Share on other sites
KoolBreeze 62 Posted May 28, 2020 18 minutes ago, shadetree said: most places like honda, dont want to deal with parts for atvs that are 30 something years old, sooo, they stopped making them these past few years like everything else..lol. as for why they rust like they do ?, i ripped this bad one part last night, the way they designed them ?, i can see why they rust out along the bottom edge. I get that but where I was headed with that is, is there not a modern muffler (OE Honda or aftermarket) that is close enough to where it could be modified by a custom muffler shop to fit. If it's just a matter of piping, then likely that's doable, but if there isn't a muffler that's close fit, maybe not so much. Share this post Link to post Share on other sites
shadetree 5,969 Posted May 28, 2020 21 minutes ago, KoolBreeze said: I get that but where I was headed with that is, is there not a modern muffler (OE Honda or aftermarket) that is close enough to where it could be modified by a custom muffler shop to fit. If it's just a matter of piping, then likely that's doable, but if there isn't a muffler that's close fit, maybe not so much. this muffler has mounting bolt spots in certain places on it and the frame. sure...you could '' jerry rig '' a muffler on the atv, but i'm not about that, i try my best to make my builds stay stock looking as much as posb if i can ?, but some times this dont always pan out when it comes to atvs that are over 30 yrs old !..lol. 2 Share this post Link to post Share on other sites
shadetree 5,969 Posted May 28, 2020 24 minutes ago, KoolBreeze said: I get that but where I was headed with that is, is there not a modern muffler (OE Honda or aftermarket) that is close enough to where it could be modified by a custom muffler shop to fit. If it's just a matter of piping, then likely that's doable, but if there isn't a muffler that's close fit, maybe not so much. i've got a spare muffler set off my '08 shadow spirit 750 stashed in my shop attic, i could make one of them work if it comes down to the nut cutt'n..lol. 1 Share this post Link to post Share on other sites
Fishfiles 20,147 Posted May 28, 2020 I am about to put a Harley Davidson muffler on my 300 ----- I need to know Share this post Link to post Share on other sites
Fishfiles 20,147 Posted May 29, 2020 I got this set up off a parts bike and going to give it a try this time around , the guy took a Harley muffler and welded to a 2nd gen 300 head pipe , think it is going to be loud , it has a baffle , I am worried about having enough back pressure , so when I dunk it under it will still idle while under water , don't think that would be an issue for you , LOL 1 Share this post Link to post Share on other sites
shadetree 5,969 Posted May 29, 2020 1 hour ago, Fishfiles said: I got this set up off a parts bike and going to give it a try this time around , the guy took a Harley muffler and welded to a 2nd gen 300 head pipe , think it is going to be loud , it has a baffle , I am worried about having enough back pressure , so when I dunk it under it will still idle while under water , don't think that would be an issue for you , LOL not only will it be loud ?..but it's gonna vibrate too !..rofl. 2 Share this post Link to post Share on other sites
superrman77 68 Posted May 29, 2020 There is a Kimpex bolt on available for the Foreman. Check fleabay. Share this post Link to post Share on other sites
Fishfiles 20,147 Posted May 29, 2020 9 hours ago, shadetree said: not only will it be loud ?..but it's gonna vibrate too !..rofl. Loud and vibrate. I think I am going to like it. Maybe it will sound like a Harley 1 Share this post Link to post Share on other sites
shadetree 5,969 Posted June 10, 2020 update: was out at my buds place yesterday, was able to locate a muffler !. very end is messed up, but i can fix it !. bottom is not rusted along it, so i'm pretty sure i can salvage it ?. i'll try to post some pics of it later today. 3 Share this post Link to post Share on other sites
Fishfiles 20,147 Posted June 10, 2020 Sounds like a score .... Share this post Link to post Share on other sites
jeepwm69 7,721 Posted June 10, 2020 5 hours ago, shadetree said: update: was out at my buds place yesterday, was able to locate a muffler !. very end is messed up, but i can fix it !. bottom is not rusted along it, so i'm pretty sure i can salvage it ?. i'll try to post some pics of it later today. I checked my stash. All rotted out along the bottom seam, and all but one were rotted where the pipe goes into the muffler. Junk. Share this post Link to post Share on other sites
shadetree 5,969 Posted October 29, 2020 23 minutes ago, jeepwm69 said: great video, but he's working with a good outer base, most times these are what is rusted away, and when this takes place, you can not weld to anything on it, as any welding will just burn right through rusted metal. 2 Share this post Link to post Share on other sites
_Wilson_™ 6,592 Posted October 29, 2020 i ran into that same issue on the tail end where the purge clean out port is... i made a temp cover , and cut a hole in it, that stopped the rust issue, and also allowed for the carbon to be blown out, or at least some. 1 Share this post Link to post Share on other sites
Wheeler 2,527 Posted October 29, 2020 This my friends is why I LOVE stainless steel head pipe & aluminum mufflers! Mine won’t rot away. Eventually I’ll need to repack, but this is where its at fellas. Find a custom shop to make u one. Then add any slip on u want. Can’t be beat. I totally understand the OEM look, sound ect. But for longevity SS for the WIN 2 Share this post Link to post Share on other sites
oh400ex 629 Posted October 29, 2020 I've always hated how an old Honda sounded with any other exhaust than stock. The only exception was an old Cobra. They are not high quality but it did sound good. Have you considered looking for a 350x, 400ex, xr400, rancher, etc muffler? If you could get a stock 400ex muffler with baffle on it that would sound amazing. The shadow muffler would probably sound great! Share this post Link to post Share on other sites
_Wilson_™ 6,592 Posted October 29, 2020 4 hours ago, _Wilson_™ said: i ran into that same issue on the tail end where the purge clean out port is... i made a temp cover , and cut a hole in it, that stopped the rust issue, and also allowed for the carbon to be blown out, or at least some. on the 300's, i just run every so often with the exhaust plug removed, never had an issue yet.... but the trx 350 ran better with back pressure, wheeler if you get a chance post pics of your setup. Share this post Link to post Share on other sites
Wheeler 2,527 Posted October 29, 2020 This is a 300ex full system 4 Share this post Link to post Share on other sites
Goober 1,555 Posted October 31, 2020 On 10/29/2020 at 9:01 AM, jeepwm69 said: I would have tried to blow out the spark arrestor first 1 Share this post Link to post Share on other sites
