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SuzukiSavage.com
/cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> Delkevic Exhaust /cgi-bin/YaBB.pl?num=1551138207 Message started by rangeshooter on 02/25/19 at 15:43:27 |
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Title: Delkevic Exhaust Post by rangeshooter on 02/25/19 at 15:43:27 What are some thoughts on Delkevic slip on mufflers? I know their are a good many who run the HD Dyna . I saw a few references to them but just wanted to hear for someone who has one. I see the description reads that no retuning is needed So dose that mean they may be restrictive. Just looking for some feed back. |
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Title: Re: Delkevic Exhaust Post by LANCER on 02/25/19 at 17:03:41 Do they use them on any of the newer big singles ? What’s the price ? |
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Title: Re: Delkevic Exhaust Post by Dave on 02/25/19 at 17:04:44 50434C4547514A4D4D564750220 wrote:
A link to what you are talking about always helps. :-? Most likely they are relying on the fuel injection computer to make corrections......you don't have that luxury. |
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Title: Re: Delkevic Exhaust Post by rangeshooter on 02/25/19 at 17:48:11 https://delkevic.com/ They are made for the S40. |
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Title: Re: Delkevic Exhaust Post by rangeshooter on 02/25/19 at 17:51:53 Price is$234.00-244.00 They say no re jetting needs to be done but recommend a dyno test. |
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Title: Re: Delkevic Exhaust Post by justin_o_guy2 on 02/25/19 at 19:29:51 I put a Supertrapp on my first one. Awfully expensive Not worth it I should have put a Dyna on it and used the money for gas and tires. |
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Title: Re: Delkevic Exhaust Post by batman on 02/25/19 at 21:53:39 You may want to go back and read the fitment procedure ,where it states that the baffle (which they sell) has to be replaced about every 10,000 miles, so damage won't occur to the inter baffle pipe and outer shell. My HD Dyna has been in place 4 years ,16.000 miles and I haven't had to look at it . They can be bought usually for less than $50.00 used, and are heavily chromed and will last many years with no attention, much less the expense and hassle of replacing baffle material. I suspect they use fiberglass (I didn't check) , which means the motor will change tune / get louder, constantly as it's runs up the miles . It sounds to me to be over priced and under engineered. |
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Title: Re: Delkevic Exhaust Post by Fast 650 on 02/26/19 at 10:48:50 2A39363F3D2B3037372C3D2A580 wrote:
If you change the exhaust and it doesn't require rejetting, then the only performance gain you achieve is the tiny amount from reducing the weight in your wallet. |
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Title: Re: Delkevic Exhaust Post by justin_o_guy2 on 02/26/19 at 11:41:24 Yep.. pointless from a performance perspective. |
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Title: Re: Delkevic Exhaust Post by twhitus on 02/26/19 at 13:41:11 i have the long slash cut one, i have not rejetted and it does not pop more then with stock "little at shutoff and closed throttle" its pretty loud when you get on it, but at cruising speed my wife can talk to me and i can hear her. if i remember correct it has several different settings for the loudness by removing adding a deflector in the nose of the muffler. its also about 1/3 the weight of the stock muffler, it fit perfectly. im pretty happy with it, wished it was cheaper. not sure if the link will work but this is a very short youtube of my bike with the exhaust fitted. someday ill make a better one https://www.youtube.com/watch?v=xc0pw__WKKI |
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Title: Re: Delkevic Exhaust Post by TheBabyDerp on 11/02/24 at 06:10:59 hijacking an old thread. currently im rocking a removed baffle stock muffler. amazing around town but annoying on the highway. is there any major differences between the 16 and 21 inch version of this muffler or is it purely looks? also, how do you like it on the highway? I like the idea of an adjustable muffler. I can make it quiet for a long trip so I don't have to hear the drone on the highway. |
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Title: Re: Delkevic Exhaust Post by ThumperPaul on 11/02/24 at 09:54:33 3F232E292A29322F2E393B4B0 wrote:
Dredging up old posts. One of my favorite pass times. I’m not sure anyone has dropped the money on a Delkevic muffler for the Savage. As I am to understand it, and I could be wrong — A shorter overall exhaust increases torque at higher RPMs, but a longer exhaust increases torque at lower RPMs. I think Lancer did some playing around with this. DragBikeMike’s Muffler Shoot Out on his souped up bike has a lot of good information. The big takeaway for me wasn’t the length of the exhaust, but rather, the puny 1.3” diameter of the header pipe and “broken dog leg” exhaust port restricted flow. I think Mike and others have found that 1.3” is too small and 2.0” is too big. The sweet spot being 1.5”-1.625” ID. Finding that diameter pipe has proven elusive to me unless you want to pay big bucks and have a custom header made. MAC Performance may have made one when they were in business, but finding a decent used one hasn’t surfaced anything. Go with a Dyna is my suggestion. Self-serving sales pitch — I’ll have a really nice pair in my possession in about a month. My son-in-law picked them up for me. I just need to go get ‘em around Thanksgiving. I really like the way mine turned out especially with a 6” HD heat shield and adapter. |
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Title: Re: Delkevic Exhaust Post by Fast 650 on 11/02/24 at 11:30:54 Yep, replacing the restrictive muffler is good. That is why the Dyna muffler is such a popular choice. It is cheap, easy to adapt, sounds better, and flows much better than the stock muffler. DBM's modified automotive muffler is the next step above that but requires a bit more work. Worth it for the sound and performance though. Sound is similar to the Dyna but louder, and it flows better than the Dyna. Exhaust pipe length doesn't matter on these when you stick a muffler on the pipe. What does matter is the pipe inside diameter. The stock pipe is too small when you get into more serious performance mods like a bigger bore piston, more compression, hotter cam and port work. RAASK made a 1.5" ID pipe and MAC had the whopping 2" OD x 1.8" ID pipe. As far as I know no one ever made a pipe between those two sizes. Having a custom pipe made up from 1.75" OD tubing will put you in the sweet spot for exhaust velocity for a stock to a fairly hopped up engine. When you tread into DBM territory with engine mods the bigger MAC pipe begins to shine. |
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Title: Re: Delkevic Exhaust Post by LANCER on 11/02/24 at 20:45:14 I chose to use the 1.65” ID x 1.75” OD pipe, with a 30” length. The reason is because of Ed. Ed started building headers in the 60’s, and based his choice of pipe size and length on drag strip results. With years of hands on experience he put together a chart for selecting the size needed for a cylinder of a given size and power level. For our engine and its power level capabilities the header pipe size is best at 1.5-1,65” ID. The length of the pipe at 30” is generally accepted for engines similar to ours, and varying the length can move the peak power up and down the rpm range. Ive used a 1.65” ID pipe for several headers, usually with 30” length, however my current pipe is about 33”. When making this pipe the last 6” of it was distorted a bit so cutting it 30” would have left the end unable to make a good fit and seal with a muffler…so it’s longer. So Ive used the 1.65” tube for years, I made my first one in the early 2,000’s, and I like it a lot. When MAC first came out with their 2” pipe and muffler they held a contest on this site, and I won the drawing. I installed the set, rode it for a while, could not tell a performance difference, maybe less. I think DragBikeMike used a larger pipe during his series of engine testing. I believe he may have had better results. Another resource I’ve used is a book on Engine Performance by an Automotive Engineer, whose career was with the big 3 US auto makers. He designed engines. He said the internal volume of a muffler should be the same volume in a cylinder, and the Dyna muffler we use so often is pretty close to that volume. An R&D test muffler I got years ago works great on my engine. (Yep, it was designed for HD’s). It is quite loud though. (Versey can tell you about that). They work well and make good sound. The authors stated primary goal when building an engine is to maximize Efficiency. |
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Title: Re: Delkevic Exhaust Post by ThumperPaul on 11/03/24 at 04:29:40 Thanks for joining the conversation Fast650 and LANCER! Lancer - I saw the post about you winning the big 2” Big MAC. Unless you have a super souped up bike like DBM’s, it’s too big. Both of y’all have mentioned that a header diameter in the neighborhood of 1.75” OD (call it 1.63” ID) is pretty ideal for a stock to “lightly modified” LS650. I certainly believe y’all with your experience and DBM’s conclusion that the 2” MAC could even be too big for his hot rod. Lancer - Did you custom make your header? I wish I could find a shop or someone that wouldn’t charge a small fortune! I found this nice 1.75” OD x 38” stainless steel pipe (presumably about 1.63” ID). Hacking it down to 30-33” wouldn’t be terribly hard, but then can it be bent with a mandrel bender? I kinda put this whole idea in the back of my mind until I saw this post (now I’m thinking about it again). https://www.amazon.com/dp/B087TTBDNX/?coliid=I1VTCTQ1BZ359K&colid=1CBXBA6JVIT19&psc=1&ref_=list_c_wl_lv_ov_lig_dp_it&th=1 |
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Title: Re: Delkevic Exhaust Post by LANCER on 11/03/24 at 05:57:36 I’ve made them myself using pre-bent pipe sections and welding, and also buying a piece of pipe (1.65” ID X 1.75” OD x 8’) from a muffler shop, and then have them bend the pipe to match a stock header, weld on the flange, and be sure to have your bike on hand when it’s being bent so you can check to insure it will bolt up properly on the bike. Mine required 2-3 adjustments to fit it, and that’s why the end of my pipe needed to be longer to get beyond the distortions so my muffler would fit properly. I believe the muffler shop had to order the pipe since it was smaller than the sizes they normally carried for cars/trucks. |
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Title: Re: Delkevic Exhaust Post by ThumperPaul on 11/03/24 at 06:56:24 You gotta put in the work! |
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Title: Re: Delkevic Exhaust Post by TheBabyDerp on 11/10/24 at 10:54:23 72554740020104340 wrote:
it ain't restrictive with the baffle removed. sounds great. there is just a little drone at highway cruising. i considered the dyna muffler but hearing it on videos i dont really like that sound. delkevic sounds better to me. I guess i will find out. one day. not a top priority rn just in the research phase. |
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Title: Re: Delkevic Exhaust Post by ThumperPaul on 11/12/24 at 06:18:33 2834393E3D3E2538392E2C5C0 wrote:
it ain't restrictive with the baffle removed. sounds great. there is just a little drone at highway cruising. i considered the dyna muffler but hearing it on videos i dont really like that sound. delkevic sounds better to me. I guess i will find out. one day. not a top priority rn just in the research phase. [/quote] Fast650 definitely knows what he’s talking about! No comment about, “it ain’t restrictive with the baffle removed” especially in light of the other information presented in this thread and several other exhaust discussions (like DBM’s muffler shootout). Video sound is never good regardless of whatever muffler. That said, the Delkevic sounds like crap to me. To each his own I guess. Cheers! |
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Title: Re: Delkevic Exhaust Post by TheBabyDerp on 11/12/24 at 07:08:03 073B263E2336210332263F530 wrote:
it ain't restrictive with the baffle removed. sounds great. there is just a little drone at highway cruising. i considered the dyna muffler but hearing it on videos i dont really like that sound. delkevic sounds better to me. I guess i will find out. one day. not a top priority rn just in the research phase. [/quote] Fast650 definitely knows what he’s talking about! No comment about, “it ain’t restrictive with the baffle removed” especially in light of the other information presented in this thread and several other exhaust discussions (like DBM’s muffler shootout). Video sound is never good regardless of whatever muffler. That said, the Delkevic sounds like crap to me. To each his own I guess. Cheers![/quote] Removing the baffle definitely let's it flow free. Rejetted the carb to compensate, but that was needed anyway. May consider to just leave it alone because I like the sound and she runs great. I can deal with a little drone at 70+. Have you heard the delkivic in person? I have not seen another savage in person so I have no idea what they sound like with dyna or delkivic in person. I am purely working with video sounds. There are quite a few guys on YouTube and one guy on here who vouch for it and say the delkivic sound very deep and nice. Who knows. It's not a priority at the moment but if I ever get it I will definitely update y'all. Muffler will be the last thing I do before the trip next spring, if I swap it. |
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Title: Re: Delkevic Exhaust Post by ThumperPaul on 11/12/24 at 07:50:28 I’ve only heard the dyna in person. Not the Delkevic. So I can only go by video sound. Modifying the stock muffler has proven fairly successful the way DBM did it. And I’ve heard other people like the mods they did to it. I don’t mind the quietness of the stock muffler, but the high pitched whistle is pretty annoying (mostly at idle speed). I think just about any muffler is going to drone at highway speed on a thumper. Turning 4000rpm at 60mph is going to drone…. And it’ll drone even more as you climb the rpm ladder ;) Give it a shot when you get to that stage. It’s personally more than I would want to spend when a dyna sounds pretty darn good in person and can be had for like $40 plus some extra hardware, etc. The dyna sounds pretty good at highway speed (and you won’t hear that in many videos). |
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Title: Re: Delkevic Exhaust Post by TheBabyDerp on 11/12/24 at 08:03:47 Oh for sure. I noticed a slight power improvement. True. I suppose drone will be inevitable. Hopefully I run into someone with a dyna muffler one day. Wouldn't mind hearing it in person. |
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Title: Re: Delkevic Exhaust Post by ThumperPaul on 11/12/24 at 08:10:07 Sound check…Testing 123… Let’s let it idle on the side stand and starve the valvetrain of oil pressure. My first criticism… :o It sounds good idling, but when he gives it a little throttle, it sounds like somebody is holding a screwdriver against the spokes of a spinning real wheel (best description I can come up with on short notice). It’s not for me. And who knows what it sounds like rolling down the road at 50-70mph. Maybe the “clattering” tone goes away. https://youtu.be/1KtfawMo-0A?si=NJ6_nSKzWAKgKVFC |
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Title: Re: Delkevic Exhaust Post by blod on 11/21/24 at 17:26:44 I just bought a 2004 Savage and need to get a more unrestricted muffler. Are these things any good ? https://www.aliexpress.com/item/4001278605105.html?spm=a2g0o.tesla.0.0.79d173SK73SKFx&pdp_npi=4%40dis%21CAD%21C%2449.51%21C%2432.18%21%21%21%21%21%402101ef6817322374542164629e7b25%2112000026806144847%21btf%21%21%21&afTraceInfo=4001278605105__unknown__c_ppc_item_bridge_pc_related_wf__ETkfCa5__1732237454449 |
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Title: Re: Delkevic Exhaust Post by ThumperPaul on 11/21/24 at 19:20:34 Go with the tried and true Harley Dyna muffler. There’s lots of good info in the Tech Section about the HD Dyna. I have one left for sale (like new, pristine condition). See link below. Who knows how that Aliexpress turnout muffler behaves or sounds, and installation may be funky. I don’t know anyone that’s tried that muffler. I think you’d be in uncharted waters with it for installation and tuning the carb. http://suzukisavage.com/cgi-bin/YaBB.pl?num=1731688067/8#8 |
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Title: Re: Delkevic Exhaust Post by blod on 11/22/24 at 01:09:41 5D617C64796C7B59687C65090 wrote:
I will take your advice. What will the Dyna muffler set me back ? Shipping might be a problem PS, from what I can see there is a connecting piece between the two harley dyna mufflers, what happens about that ? |
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Title: Re: Delkevic Exhaust Post by ThumperPaul on 11/22/24 at 05:18:04 Here’s a link to my recent installation. There is also more information and other methods on how to mount the Dyna muffler in the Tech Section. My install —> http://suzukisavage.com/cgi-bin/YaBB.pl?num=1726756292 You will only use one of the mufflers. Don’t worry about the mounting rod used on an actual Harley. See the muffler I listed for sale. You will need a few other items to complete the installation. I included links to some of the items and referenced others. There’s a couple other things like channel bolts, nuts, and washers. And you may need a new gasket that goes between the header exhaust port and header pipe (depends if yours is still in good shape or already trashed). The last Dyna I sold went from here (Houston) to Alabama. FedEx 3-day shipping was $6.99 using my discount shipping app. Dyna + Shipping was total $52 for the buyer. That’s pretty close to what you would pay for some unbranded and unproven muffler shipped from China via Aliexpress. The extra things you need will run about $30-$40. See the links in my installation post to see a few of the extra items. I didn’t list links for the fasteners I bought at Ace Hardware. The exhaust coupler I used to connect the header pipe to the dyna muffler came from Autozone (like $4). PM me if interested. You may have to have 10 posts to message me. I can try to message you if that’s the situation or you can keep posting questions or commenting around the forum until you hit 10 posts. (I’m up to like 1500 posts/comments. It isn’t hard, but I know I’m annoying sometimes. lol) |
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Title: Re: Delkevic Exhaust Post by TheBabyDerp on 11/22/24 at 06:17:27 I bought the other muffler from the same set he has left. It is in good condition. I am just waiting on a few additional pieces to put it all together. Total cost for me ended up being right around 110. But again, with a random muffler from China, you are looking at potentially more because you are left to figure it what odds and ends you need to make it work. I will update for sure on the installation once it's done. |
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Title: Re: Delkevic Exhaust Post by blod on 11/22/24 at 08:00:36 4579647C6174634170647D110 wrote:
It looks perfect, its a shame it's such a process getting all the parts together. If I could get everything I need from one place I would do just that. Canada post are on strike right now and the chances of getting parts from different sources will be impossible. |
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Title: Re: Delkevic Exhaust Post by TheBabyDerp on 11/22/24 at 08:06:10 You will have those issues no matter what you get unless you get something expensive like Delkevic. Any other muffler not specifically made for this bike will require additional pieces. With that said, you can look into modifying the stock muffler temporarily. I removed the baffle with a basic hole saw bit and rejetted my carb. It's not ideal but it's far superior to stock sound. It can be a little annoying at 70mph though. This could be a cheap temporary solution until you can get the parts necessary. There are other methods to modifying the stock muffler as well which include drilling holes instead of removing the baffle all together. Try that first, may be a better sound than removing it entirely. At least temporarily. |
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Title: Re: Delkevic Exhaust Post by blod on 11/22/24 at 10:25:24 5945484F4C4F5449485F5D2D0 wrote:
This mod looks simple enough, but what's the original purpose of the rivets ? https://www.youtube.com/watch?v=DREzePCuToc&t=16s |
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Title: Re: Delkevic Exhaust Post by TheBabyDerp on 11/22/24 at 10:30:31 i have no idea. i just took out the whole baffle lol |
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Title: Re: Delkevic Exhaust Post by blod on 11/22/24 at 10:37:03 Did you leave the rivets in place when you removed the baffle ? |
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Title: Re: Delkevic Exhaust Post by TheBabyDerp on 11/22/24 at 11:12:04 no |
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Title: Re: Delkevic Exhaust Post by ThumperPaul on 11/22/24 at 14:40:25 Check out this great post by DragBikeMike if you want to learn and understand what you're actually doing when you modify the stock exhaust. https://suzukisavage.com/cgi-bin/YaBB.pl?num=1526453881 Keep in mind that the exhaust doesn't just blow hot air and make noise. The LS650 isn't a complex high performance bike, but you can kill performance and the reliability of the bike with a bad exhaust mod. |
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Title: Re: Delkevic Exhaust Post by TheBabyDerp on 11/22/24 at 15:40:06 I did not notice much performance loss by removing the baffle. granted im sure there is some. With that said, the sound is okay. It's good at lower rpm. at high rpm or highway cruising i think its just not right. the drone isn't pleasant not necessarily because how loud it is more so the tone or frequency. thats why i got the dyna will install soon. |
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Title: Re: Delkevic Exhaust Post by blod on 11/22/24 at 19:54:31 5C607D65786D7A58697D64080 wrote:
I can not reply to your PM's yet, I will not do anything for the moment, when the post gets back to normal again I will contact you. I should have 10 posts or more by then, |
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Title: Re: Delkevic Exhaust Post by zipidachimp on 11/23/24 at 00:48:16 Another bonus of the Dyna: Harley chrome is forever!!!!!! cheers! 8-) |
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Title: Re: Delkevic Exhaust Post by ThumperPaul on 11/23/24 at 04:33:15 [/quote] I can not reply to your PM's yet, I will not do anything for the moment, when the post gets back to normal again I will contact you. I should have 10 posts or more by then, [/quote] No worries. Sounds like the Canadian postal service has you by the ——— too. Yoir’re right Zipi! The chrome is super high quality! The Dyna I installed on another guy’s bike has been put through hell (rain, messy dirt and gravel roads), and it looks like new when he cleans up his bike. |
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Title: Re: Delkevic Exhaust Post by TheBabyDerp on 11/27/24 at 05:02:20 For anyone coming across this thread in the future. Get a Dyna muffler. tons of resources available here. I got #65747-94 variant. Works great. |
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