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SuzukiSavage.com
/cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> dyna muffler conversion /cgi-bin/YaBB.pl?num=1407529013 Message started by stewmills on 08/08/14 at 13:16:52 |
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Title: dyna muffler conversion Post by stewmills on 08/08/14 at 13:16:52 I am strongly considering the dyna muffler conversion and my main issue is what the heck to get. On the infamous auction site there are so many models and such when I search for "harley dyna muffler" and I am hesitant to buy the wrong thing. I found this auction that I assume is the side rail version that is said to be the better choice versus the tab mount and would be ok to buy both and sell the other to a fellow savager. Is this the right model and is there a specific part or model number I should and should not buy? http://www.ebay.com/itm/Harley-1994-FXD-Dyna-1340-1450-Mufflers-C-65747-94-/251610475488?pt=Motorcycles_Parts_Accessories&hash=item3a95272be0&vxp=mtr FYI - called my local Harley dealer and he said he would be happy to sell me a single, used pipe for $100. I bet he would! Thanks folks! |
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Title: Re: dyna muffler conversion Post by Dave on 08/08/14 at 13:29:42 Those auction pipes look like they are the correct ones. When getting something from the left coast - might be prudent to ask if they are Catalytic equipped ones. They run fine - but tend to make the chrome blue where the catalyst is....especially on the carb equipped Savage which isn't all that precise about fuel mixture. Dave |
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Title: Re: dyna muffler conversion Post by stewmills on 08/08/14 at 13:33:47 Thanks Dave. Good point on the West coast question. Is there a model # in that auction that is key to indicating this is the correct version I need in case I want to search for a non-West coast pair? Or do I just find a bunch of auctions and post them all here for you to tell me YES or NO? ;D ;D ;D Kidding. UPDATE: I found part# 65657-87 that seems to be the version with the side rail attachment. Is this what I need? Thanks! |
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Title: Re: dyna muffler conversion Post by Serowbot on 08/08/14 at 14:10:52 Rail mount Harley shorty's come in a variety of SL#... there are just as many wrong SL# as well... Best to just look... you want a baffle intact, rail mount, and no Cat, or crossover tube... ;)... |
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Title: Re: dyna muffler conversion Post by stewmills on 08/08/14 at 14:24:27 Thanks Serow! Searching a few more threads (should done that before starting a long post...) it seems that most recommend part # 65747-94 as the match and a decent price in nice shape is around $30. One thing I cannot grasp in reviewing the tech post on the swap is can you use the factory lower heat shield or does it require an after market once you make the swap? If I can use what I have that's what I prefer...just to swap out the muffler and leave the rest like it is. I don't want/like the exposed clamp look. |
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Title: Re: dyna muffler conversion Post by bobert_FSO on 08/08/14 at 15:02:14 You can use the stock heat shield/joint cover. However since the dyna muffler is smaller in diameter than the stock muffler, the old shield looks a little funny. An aftermarket shield looks a lot cleaner and they don't cost very much. |
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Title: Re: dyna muffler conversion Post by S-P on 08/08/14 at 17:24:45 3D303D3A2D2B5F0 wrote:
If you are good with a grinder, you can whack off part of the big flange on the stock shield. Put it in a bench vise and cut away. It took me about 10 minutes. Mark it out with a magic marker first. I blacked out my muffler so the raw edge doesn't show. If you're kinda anal about your chrome wrapping around the edges, get an aftermarket. They're pretty cheap. |
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Title: Re: dyna muffler conversion Post by stewmills on 08/08/14 at 19:55:54 Thanks all! I'll probably start looking for a muffler and no doubt be circling back around here for a tip or two if I can't find it spelled out in the tech section. bobert_FSO: BTW, do you have a part# or a link to the after market heat shield that looks proportional to the conversion? Once I find the pipe I want to go ahead and get the rest of the needed parts to complete the job at once. S-P: I am ok with a grinder, but since I will leave it all chrome I don't think I will like a raw edge...I'm anal like that ::) |
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Title: Re: dyna muffler conversion Post by Todd James on 08/08/14 at 22:24:15 Here's what I used: Motorcycle Superstore Cobra Universal Heat Shield Item # 31163, SKU # 283211 Most Recent Price: $ 17.99 If you do not use an adapter pipe between the header and the muffler then you may want a heat shield shorter than 7" long. (I recommend a 6 or 7 degree adapter pipe such as the one RYCA sells or made by your local muffler shop for a few bucks.) |
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Title: Re: dyna muffler conversion Post by stewmills on 08/09/14 at 06:05:18 thanks Todd James. great info and details. FYI to all, the auction I listed above has catalytics just in case you are watching the auction . I passed on them. looking locally. |
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Title: Re: dyna muffler conversion Post by bobert_FSO on 08/09/14 at 07:11:26 Todd answered your question about the shield. I have no specific supplier or part number. |
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Title: Re: dyna muffler conversion Post by Todd James on 08/09/14 at 07:31:14 The non-catalytic mufflers are getting harder to find. That is a catalytic muffler you see on mine. If you are concerned about the appearance of bluing from the cat heat then you can use the Harley shield that you see on mine. (Detail picture below) I think the Harley shield dressed up the installation. By the way... my header and muffler have not blued in over 1500 miles. Your carburetor settings and jets will affect that. |
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Title: Re: dyna muffler conversion Post by justin_o_guy2 on 08/09/14 at 09:46:00 I can tell you from experience that grinder sparks flying near a battery vent tube can cost you a battery and a LOT of cleaning.. |
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Title: Re: dyna muffler conversion Post by stewmills on 08/18/14 at 16:46:25 So...I posted an ad on craigslist and a local guy that is a custom bike maker connected with me and offered me a pipe for $20, and since he had two with him when we met that literally look a day less than brand new with the heat shields I went ahead and grabbed both for $40. I presume I can make this model fit (see pics), which is 64708-08B. Said there are no catalytics and has baffles so I guess all I need to do now it do the swap and then determine if I need to rejet. As far as mounting, I haven't looked to see if these mount up directly or if I'll need to make me a little bracket but I can handle that so long as these are not "wrong" pipes for some reason. Worst case, I'll ebay them and make a few bucks. ;D |
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Title: Re: dyna muffler conversion Post by Serowbot on 08/18/14 at 17:45:16 Those are a little unusual looking, I haven't come across any like that... Looks like they have a welded in nut instead of a bolt,.. and some kind of dress cover held on with hose clamps... ... but,.. you can make them work... I have confidence in ya'... ;)... Tab mount, rail mount, and bolt mount, all had to be figured out at one time, too... Now we got a nut mount... :-?... PS.. I think they may be CAT equipped,.. based on the heat shield cover... ...but, Harley Cat's are nothing more than a heater coil in front end of the muff.... so, it won't hurt anything... ...and you'll be cleaning up the world... :P... Show us some pics of the finished install... ;)... |
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Title: Re: dyna muffler conversion Post by stewmills on 08/18/14 at 18:39:29 7A6C7B667E6B667D090 wrote:
Serow, here's a few close-ups of the nut job (deal, thingy, whatever you call it) and a couple from both ends of the muffler. I suspect that the honeycomb deal is the CAT? My hope was that they weren't CAT equipped so I wouldn't have to deal with the bluing, etc. but it is what it is. If you think it's worth mounting, I'll figure it out one way or another unless someone out there (in here) has used this set-up and has suggestions...can't be too difficult. The rearest mounting hole looks to be about 1/2" from the most forward mounting hole on the bike's factory bracket so I may have to make a small jumper of some sort to tie it all together. Lastly, does the CAT/non-CAT affect the level to which a reject mat be required or is it only the potential for bluing (that it seems would really only be under the heat shield) that it impacts? Thanks! http://s24.postimg.org/j9slqni51/IMG_20140818_02150.jpg http://s16.postimg.org/qs081r9xx/IMG_20140818_02151.jpg http://s29.postimg.org/f1sg03fk7/IMG_20140818_02152.jpg |
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Title: Re: dyna muffler conversion Post by stewmills on 08/18/14 at 19:03:13 Here's a pic from the tech section that I think has some discoloring on the pipe that I am trying to avoid (I stole the image...it's not my bike...it belongs to one of you so thanks in advance ;) ;) ) |
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Title: Re: dyna muffler conversion Post by Oldfeller on 08/18/14 at 19:19:39 Can't avoid it, it is inherent to the first hole position in the crossover baffle. Hot gases exit the inner baffle, hit the outside wall of the muffler, discolor it from the extreme heat, bounce off and reenter the center baffle through the next series of holes. Think of it as an "aimed" propane torch and you won't be too far off ..... |
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Title: Re: dyna muffler conversion Post by verslagen1 on 08/18/14 at 20:26:31 That honey comb deally is a flame arrestor. Can't tell if a cat is on the other side though. |
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Title: Re: dyna muffler conversion Post by stewmills on 08/18/14 at 21:28:18 52415657484543414A15240 wrote:
the seller who is also a bike builder shook it and said if it had a CAT that I would hear stuff rattling around inside. they are solid as rock. nothing moving inside. i am none the wiser so who knows. guess there's one way to find out :o :o |
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Title: Re: dyna muffler conversion Post by Serowbot on 08/18/14 at 22:33:08 Okay, I'll differ to Versy... The only Harley muff's I've seen with that coil in the inlet said CAT equipped... Regardless... I've installed 2 like that... and test ridden them... and did not notice any performance reduction... (they did blue a little at that point, but yours seem to have an additional dress shield to account for that)... Heck,.. you have them... I'd install it... I love to pick on the Harley crowd.. (although I now own one)... ... but, Harley makes good pieces... with great quality chrome... ... and those Shorty's that so many Harley guys throw away, are nice mufflers... ...(I clean my Sporty muff with 000# steel wool,...try that with a Jap muff and it will scratch)... my Savage Sporty hasn't scratched in 20k miles... That's good chrome... |
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Title: Re: dyna muffler conversion Post by Todd James on 08/18/14 at 22:40:24 Harley-Davidson's description for Part Number 64708-08B is: "MUFFLER,FRT/RR,CHRM,CATALYST" So... If you want to hide the discoloration that is likely to occur from the cat heat then you should plan your installation to include the shield that came with the muffler. The 2" diameter Cobra Universal Heat Shield that I showed in my previous post does a nice job of covering the necked-down diameter of the forward portion of the HD muffler shield you have. |
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Title: Re: dyna muffler conversion Post by stewmills on 09/09/14 at 21:33:17 Update: finally got around to mocking up the install tonight. here is what I did. 1) needed a bracket to mate up rear mounting holes. proceeded mock up without it. it was a mock up... 2) had some foil hvac tape and wrapped several loops for the needed thickness where the two join. wow, what a great alternative to cutting a can. 3) cranked it up and wow...sounded great. adjusted idle and ran up and down the driveway and still enthralled at my success. 4) decided to take it out for a short run. preparing to exit the driveway i noted some smoke at the joint but chalked it up to wd40 i dripped on it. 4) pulled out on the road all excited to show off my new sound to the two deer i almost hit pulling in the driveway today. 5) as i rolled through first gear and got into second a little harder to really hear her scream, the muffler shot off like a rocket rolling down the road...and the bike really got loud! Well, what had happened was...the glue in the foil tape was melting into a hot, slippery goo (hence the smoke) and the first good gush of pressure coupled with the vibration pulled it right off the bike. skinned it all up. Luckily i bought a pair and I have a nice, pretty one to reinstall. Lesson learned...the foil tape maybe isn't the best idea and DO NOT ride without the rear bolted in place!!!!!! I am lucky it didn't roll under the rear tire and cause a bad accident. |
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Title: Re: dyna muffler conversion Post by gizzo on 09/09/14 at 23:31:41 76716072686C696976050 wrote:
Only if it was already knackered. He's having a lend of you. Nothing rattling around inside a cat equipped muffler in good condition. |
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Title: Re: dyna muffler conversion Post by Dave on 09/11/14 at 05:19:58 Modern catalytic converters are molded into honeycomb structures.....like the one at the entrance to the pipe you have. They have a lot of surface area in a very small package. Early catalytic converters had pellets that looked like "Bean Bag Chair" stuffing....and they would rattle when you shook them. Yes you definitely need a rear support. Not only to keep the muffler from working it's way off the header pipe - but also to support the weight of the muffler and header. You don't want all that weight being supported by the joint/gasket/bolts at the cylinder head - when you hit a pothole the weight and lever arm created by an unsupported muffler places an incredibly large force on the header pipe and cylinder head. The chrome shield made to fit over the muffler can is a very good idea for a cat muffler. The catalytic converter gets much hotter than a stock muffler, and that is why the chrome turns blue....it is very hot! Even for the stock muffler the shield is a good idea if you have a passenger. I never ride in shorts and I never let my wife ride in shorts - but a hot exhaust pipe can make a nasty burn and a lasting scar. I have had 3 major burns from hot chrome exhaust pipes, and they took years for the scars to fade away. |
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Title: Re: dyna muffler conversion Post by stewmills on 09/11/14 at 07:13:39 Thanks, all! It's definitely a CAT. I got a mounting bracket made up last night. Didn't have time to take pics of the procedure but I'll post a pic maybe tonight of the finished product (be prepared...I am NOT a fabricator) in the event it helps others with this similar style pipe. I intend on using the heat shield that came with. I as well got a nasty burn from a 4 wheeler when I was about 10 that nearly turned into gangrene because I hid it from my parents. Lesson learned!!! |
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Title: Re: dyna muffler conversion Post by stewmills on 09/11/14 at 21:38:06 Here are a few pics of the bracket and a few things before the install. Here is the bracket I made. I welded two 1/4" bolts to one end to mimic the bolts on the original muffler that went through the frame mounting holes. I then drilled two holes to bolt the bracket onto the muffler. http://i59.tinypic.com/s5w7l0.jpg http://i61.tinypic.com/2q3vknq.jpg Here is the bracket bolted onto the muffler. http://i59.tinypic.com/qsa1dh.jpg Here is the soup can (cream of mushroom to be exact) to be used as the gap filler/crush seal. http://i62.tinypic.com/154vazo.jpg I couldn't find a better clamp at the auto parts store, so I cut the screw off of a 4" hose clamp and wound it up inside the factory clamp and it was enough to fill the void allowing it to clamp the smaller dyna muffler onto the pipe. http://i58.tinypic.com/2mo5nk3.jpg Finished product with the heat shield that came with it. (sorry for the dark photo...it started getting dark on me). http://i60.tinypic.com/2rxxts6.jpg Overall I was pleased with the process and learned a few things, mostly thanks to this forum and everyone's advice. I did not need to rejet and just adjusted my air/mix screw and she seems to be running great. A little snap/crackle/pop here and there when you really get on it or decelerate quickly with it in gear but I kinda like it and I think that is to be expected. It isn't really loud, which is what I wanted, so if LOUD is what you are going for seek an alternative. If anyone else is trying to install this same model/style muffler and I can be of assistance with more details on my bracket just let me know. Thanks, forum! |
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Title: Re: dyna muffler conversion Post by Serowbot on 09/11/14 at 22:47:24 686F7E6C76727777681B0 wrote:
Cream of Mushroom... is the best kind of soup can to use... I do hope you had grilled cheese.... |
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Title: Re: dyna muffler conversion Post by stewmills on 09/12/14 at 05:44:09 Quote:
All be it my favorite, it was unfortunately used in chicken and rice. Boo.... |
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Title: Re: dyna muffler conversion Post by Todd James on 09/12/14 at 06:05:58 I like the way you moved the muffler shield forward to cover the clamp and joint. Very neat. Nice job ! |
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Title: Re: dyna muffler conversion Post by 49mack on 09/13/14 at 09:16:29 I finished a -49 part # Dyna muffler conversion yestersay using a RYCA adaptor to clear my brake cable. A few things I didn't like: 1, the adaptor does not fit over the LS650 muffler (the Dyna muffler fits very well into the adaptor). I made 4 each 3/4" deep saw cuts with my dremel tool at the exhaust pipe end and expanded the RYCA adaptor to fit. I used Gator Patch muffler sealer (Auto Zone) to get a good joint. 2, Attach the Gator Patch around the exhaust pipe with some contact cement before you do the final tightening on the RYCA adaptor. Trim it after completion. This will allow you to retain your sanity. 3, Save the pretty RYCA chrome bolt in your "spares" box and install a grade 8 bolt. It takes some serious clamping. I also removed the CA emissions box and cut off the attachment ears leaving just the stock bracket, and painted it. The holes on the -49 Dyna muff do not line up with the stock braket and used a 13mm (head) bolt. I had to drill a new hole in the bracket about midway between the stock holes and sawed off the extra length, smoothed and filed, etc. I recommend a Harley muffler clamp (all over ebay) to attach the muffler to the RYCA adaptor. Much Stroner that the rusty stock clamp. Then the longest Motorcycle Superstore heat shield neatly completed the job. It really looks nice and adds sleekness to the lines. The Dyna muff is no louder but sounds a bit deeper. I have so much air intake noise from the ebay cone muffler that I can't hear the exhaust at highway speed anyway. All together, this project took about 8 hours, the longest part was grinding and sawing off the emissions box ears, plus a day for the paint to dry. With the RYCA adaptor amgled outward, the muffler clears my brake cable and aligns parallel to the swingarm. |
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Title: Re: dyna muffler conversion Post by LENNONg on 09/19/14 at 18:56:49 hey first time posting here, was just wondering if these mufflers would work... the guy says its off an "09 fatboy" any help would be appreciated! |
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Title: Re: dyna muffler conversion Post by LENNONg on 09/19/14 at 18:57:17 guess my first post couldnt have images.. ahha here u go http://https://imagizer.imageshack.us/v2/440x330q90/537/syDczU.jpg http://https://imagizer.imageshack.us/v2/587x330q90/904/UQxTSO.png |
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Title: Re: dyna muffler conversion Post by stewmills on 09/19/14 at 19:28:28 lennong, looks like they would but not sure if the mounting holes line up or if you will need a bracket as i did. are they local where you can handle them or an internet sale. how much are you having to pay. share your details here and everyone will keep you in the green so you don't overpay, etc. check the tech section on this forum for how-to`s. also, make sure the pipes have baffles and not drilled out straight pipes. our bikes need the back pressure from the baffles. check out these links http://suzukisavage.com/cgi-bin/YaBB.pl?num=1181745927 http://suzukisavage.com/cgi-bin/YaBB.pl?num=1298689417 |
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Title: Re: dyna muffler conversion Post by LENNONg on 09/19/14 at 21:20:44 111607150F0B0E0E11620 wrote:
Thanks for the reply! The guy is local and wants 75 obo for em.. To be honest i dont even have the bike yet, but will be buying one next summer, iv been reading this site over for months and im certain ill be buying an s40/savage |
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Title: Re: dyna muffler conversion Post by stewmills on 09/20/14 at 04:51:50 you only need one (i bought a pair too though) and the average price ppl here get them for is 20 or 30 each...more than that is too much. i posted a craigslist ad and a guy contacted me and i got two for 40 with heat shields. be patient and educate yourself as you are and you will know what's a bad deal. heck, you may get lucky and come across freebies. note that some dealers will offer you take-offs but their rates vary by dealer. mine wanted 100 each. good luck with your bike hunting. you'll love it. |
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