Yamaha Dragstar Exhaust Modification - No rejet!

[@tedturner5299]

Start with pilot bit, a much smaller drill bit. Makes this tons faster and easier. You can use 3 bits total, small, medium, and your final one. Spray them with WD40 and work your way through the bits. Easy peasy. Like your vids, thanks!

[@amwap12]

did this to my little 125 twin. sounds much better now have 4 holes 6mm.. will redo to 8mm soon.. wasn't aware of this mod until I saw this video thanks for posting it

[@Gothtecdotcom]

Again, its not so much of an issue with a 4-stoke engines, as back pressure its so important, but if you release too much back pressure you may have to rejet.I would say "yes you can, but check before hand!" A good idea is to drill out the holes and see, if you then get a "flat spot" (when riding" then use bolts to fill the wholes until your happy! When I did this mod if knew that I could refill the holes with bolts and a tap and die set and so have no issues with doing it!!

[@flashesofblack4128]

Nice informative video. I have to say, I have owned three Harley Davidson Sportsters in my life and they were very LOUD! I found that on long trips the loud exhaust note became tiring after a couple hours of riding. I am a man in my 70's so I bought smaller a V-Star 650. The stock exhaust sounded loud enough for me. I would be a bit reluctant to bore holes in the exhaust as it may affect the back pressure on the exhaust stroke possibly making the engine run lean which in the long run may shorten the service life of the engine. I would say if boring the holes makes the bike louder without damage or changing the jets then by all means go for it.

[@bigkev78]

Cheers for the video mate! 🤙🏻😎 From down under, where the law has nothing better to do than harass riders for loud exhausts! I just got defected by cops for dealer fitted when new, Vance & Hines Short Shots pipes, on a 2018 model bike that just had a RWC inspection! I had to replace them with stock pipes and have it noise tested at my cost. So at least this gives just a little more notice to drivers than the whisper quiet stock OEM pipes on the XVS650, and hopefully not loud enough to attract the attention of officer loud pipes the noise nazi…😮 Thanks for the video, your very easy to follow steps, led to my very satisfied success!

[@egemcim]

What a great job mate, thank you for sharing this, i’m going to do my one now.

[@reaperkiki9503]

Thanks a lot Brother it's perfect !!!! I do this just a few minutes i can't believe the result my god i had not enough to buy dragpipes i haven't regrets now !!! God bless you

[@pluspnv]

Did this and it did make a difference on my 07 Classic 650

[@trese7en]

Have you had any issues after? I have an 07 650 and I need my pipes to loud at the light

[@Gothtecdotcom]

This is the mod for a standard exhaust for the Dragstar/Vstar 650 only! Any modifications to non-standard exhausts, or exhausts on other bikes, must be done to the individual specifications of the Airfilter - carb - exhaust set up!

[@micheldenis5666]

Merci a toi l'amis pour ta vidéo qui va être très utile pour moi ,,, CIO ET BONNE ROUTE .

[@stevetriker1255]

loud pips do save lives, you r right

[@Gothtecdotcom]

If you have a Air induction system then that can cause backfire... A rejet it a complicated carb set up, that increases/decreases the fuel flow. Best bet is take it to your mechanic for assistance.

[@leonardomedeiros2837]

Nice video, man! Great result. I intend make this in my DS 2005, in the future.

[@gunitfor]

Its got full service, i might be right in thinking the dragsters are a bit ticky on idle, perhaps a dose of the old paranoia, my old vt 600 was a good one i do not regret the dragstar yet !

[@Gothtecdotcom]

Look up the specs of the exhaust, you should find out if you need to rejet - I found a diagram of rejetting for the XVS650 exhaust that had 3 plates and so gave the stages of rejet... I have done similar on a honda 250 with no ill effect! As its a 4 stroke it doesn't really matter so much about backpressure, its losing back pressure that means a rejet.

[@brain8149]

When I bought my XVS650A it also had a modified exhaust but in a different way. There are just 2 tiny holes (maybe 5-6mm?) at the bottom of each "cigar". About 1/4 of the length from each end. It sounds good and I have the feeling it is quieter than your modification. I even haven't noticed the mod for some time and was wondering why it was sounding so good, until I put my hand below the pipe and then could feel the gas flow :-) The drawback might be that sometimes I can smell the exhaust gas when I e.g. stop on the red signal. But I'm not sure if it's from that.

[@Gothtecdotcom]

You should see my Suzuki Intruder c800 exhaust mod... :D

[@JosephW99]

Thanls for replying. I figured it out yesterday. I drilled a 1" hole in the in the baffler wall that is inside the baffler about 10". That gave it a nice aggressive sound. All of that work yesterday morning was for nothing. Simple solution is what I did. I suppose I could have cut out the entire baffler wall but it's fine how it is now. Performance is the same...Tested it today. I'm getting more back firing though...not too much but it's there...Any ideas on how to fix that?and what is 'rejet'?

[@gcsmowfo]

I would have drilled pilot holes first, say about 2mm first then worked my way up to 5 mm then 8 mm holes, and use sharp drill bits. I'm keen to give it a go on my wife's v star 650 but I think I'll ask first before I do anything.

[@Gothtecdotcom]

It is exhaust metal, if you tried a 2mm pilot all you'll do is go through very quickly and then snap the drill bit. As for sharp drill bits, I look after mine and find that just taking care when drilling is actually the best way to get a good result, because even sharp drill bits dull very quickly when drilling metal.

[@Gothtecdotcom]

Theres an old biker adage I was told by a custom bike builder, in his 60s... - If you see cheap drill bits, then buy as many as you can, look after them but they will break, but you will always have a spare. If you buy expensive drill bits, you'll go through them just as quick but it'll cost you a lot more and most of the time you'll have to pop out and buy more halfway through a good days work!

[@Gothtecdotcom]

This is a common problem with the 650 Dragstars, it seems the clutch is its weakest point, my old Dragstar suffered from serious clutch slip from new... Firstly a change of oil may help with that, as its biting too quickly, going for a synthetic oil may help that.... BUT!! I suspect that your clutch plates have given up and you need news ones, easy to get and I have a video on here on how to do it :)

[@Gothtecdotcom]

Addendum: This mod may effect your fuel consumption, but in your case by a very small amount. Another idea is whip the exhaust silencers off completely and go for a run, if there is little difference in performance then I'd do this same mod! but don't run without silencers, as this could have hidden effect on the engine and not very good for the police and neighbours :D

[@dougyboy710]

just wondering what model your v star is mainly year as iv got a 2013, xvs650 custom and you point out about there could be 2 plates hiding back there , whats the best way you can check if there 2 plates

[@Gothtecdotcom]

Drill it and see... otherwise check the specifications of the exhaust for that year... or ask your dealer... This one is a 2000 model, my previous xvs650 was 2005, they haven't really changed much over the last 14 years...

[@dougyboy710]

***** sweet as cheers for the video and advice :)

[@Gothtecdotcom]

Take the entire muffle off and run it, see what the change is, it sounds as if you may need to get a replacement muffler to get the sound you want... Also its not a V-twin and that may be the influence to the sound. What are the specs of the exhaust (baffle plates vs rejet)? On a guess I think you may have to rejet due to the limited back pressure from the exhaust...

[@roberttom3024]

Nice job!

[@paulgregroy1986]

Hay! I love your style man,thanks for the video.

[@spanky522]

Sounds like crap which holes drilled in the baffles. You are better off to use a 2" hole saw and drill the baffles and pull them out completely. That way, it will be muffled, but a little louder and deeper.

[@Gothtecdotcom]

Well if your going to say the same thing on both videos then - Firstly - legality, with current legislation changing, not being able to "return to factory condition" renders your opinion mute. Secondly - That would screw up the engine efficiency and would result in the carbs needing to be rejetted... I do believe I said that in the previous video on this subject... Thirdly - Resale value reduced Fourthly - Mic on the camera is crap.... doesn't do the change justice... You should see what I did to the intruder...

[@benm1889]

Could this be done to an xvs 125, Does this need rejetting, would it affect the engine negatively and would it pass MOT? Any help would be great! Cheers

[@Gothtecdotcom]

Having done this on other 125 bike, a rejet may be required, MOT is not a problem

[@benm1889]

@@Gothtecdotcom awesome thanks so much for the reply. Just got my xvs 125 so pardon my ignorance but, is rejetting it easy enough to do myself?

[@Gothtecdotcom]

Looking back at comments, I have just experience a serious running issue and found it to be the idle was set too high, dialling it back sorted the problem :D

[@kickepiz]

Do you have to drill all the way to the baffle or just the first metal plate?

[@Gothtecdotcom]

+kickepiz Read the description to the vid, all info you need is there.

[@redneck0ne]

the only question i have is once you have drilled the holes useing your method, some metal filing should be inside the muffler, does it make any rattle while riding?

[@chrisrag1346]

Am thinking of doing this to my 98 xvs 650 classic but am wondering if after the mod will it still pass an MOT ?

[@Gothtecdotcom]

No reason it shouldn't... This bike just went through MOT with the mod as is!

[@chrisrag1346]

Arr right. Thanks for that Info

[@gunitfor]

Hey have a 650 done 50k it runs ok though it don,t sound fresh anymore, bike itself is good, now heres the problem second hand engine cost 1k or theres option 2 a rebuild i would do it myself but realisticly the parts seem expesive and a can,t find any outlets ? any ideas its not like buying motor parts is it

[@crazee6821]

Good job and thanks for sharing !!👍👍

[@gunitfor]

hi gothtec, a high idle on a cruizer is not pleasing to the ear luckly the tick over adjust on a xvs is simple, your bike looks clean ive done the same exhaust mod on mine with no probs, my next job will be valve clearances !

[@JosephW99]

Looking for some tips....ANYBODY please. I have a LS650 with a Silver Tail pipe. I took the entire inside out today (baffle and fiberglass) that only made it sound like shit. So, I put it all back together and then did what this guy here did. I haven't noticed a change though..So on the front and back end of the baffle I drilled bigger holes where the smaller ones are..on the inside. Still no change...I think. I'm thinking maybe I need to cut the whole end off with a hole bit. What do you think?

[@MrBenjamingauda]

Does the size of the holes matter? Great Video!

[@Gothtecdotcom]

no, I used - can I plug the hole easily, with a bolt, if the EU changes the law on modifying exhausts...

[@Earclops]

@@Gothtecdotcom how do you plug with a bolt?

[@Gothtecdotcom]

50k!! Its hardley run in! As long as you look after it, like a full service regularly, it should last at least 100k more...As for parts either go to your local dealer or ebay!

[@Gothtecdotcom]

Also check the grade and type of oil you use...

[@Rev.Emma-Doughty]

Hi Gothtec, I am thinking about doing this exhaust mod on my xvs650 dragstar classic, I love my bike but its not the most aggressive sounding exhaust I have ever heard! Its fitted with an Air induction system that I really don’t want to remove, can this mod be done without removing it? Thanx in advance! Mikeyd543. p.s Love your video's.

[@Gothtecdotcom]

If the bike has been looked after then it should be easy, saying that the current dragstar was in terrible state for its mileage and all the bolts come away fairly easily... If I remember rightly it was the exhaust bolt that snapped and they are made of cheese, so if you can get them out and replaced with marine bolts the sooner the better :D

[@Gothtecdotcom]

Unless you've not changed the oil... Check your ancillaries first, like the carbs and electrics...

[@Gothtecdotcom]

No it isn't, strangely enough! Now cobra pipes may create some issues, but this mod wont!

[@Bowtie1972]

loud pipes, save lives

[@Gothtecdotcom]

yup

[@memogrez1]

Aquí en Suiza es IMPOSIBLE hacer una modificación como esa...😢

[@Gothtecdotcom]

Suiza es un lugar terrible si amas tus motos, tienes mi simpatía...

[@Gothtecdotcom]

PS - without seeing your set-up I can not comment...

[@Just_trying_stuff]

Came for the exhaust... stayed for the nails 😅

[@frios011]

Should first drill a smaller pilot hole then go through them again with the bigger bit.

[@Gothtecdotcom]

True, I did that the first time I did this, but opted to just go for it with confidence... tbh there wasn't that much that could go wrong

[@olanordmann55]

can i do that on a yamaha xvs 125

[@TheSupercolly]

How come you don't have to touch the jets?

[@Gothtecdotcom]

It's explained in teh video... There are three baffle plates, if you go through the first one you don't have to rejet, ebcause back-pressure is not effected,if you go through the second one, you need to rejet

[@daveb1963]

I see ur not very good at painting, as you got alot on your nails,lol

[@darkMoon202]

What's the name of the music

[@Gothtecdotcom]

The only music in this was composed by me for my videos....

[@benmartinez7203]

On mine the inside of the plate is coned inward so drilling it is impossible

[@Gothtecdotcom]

I believe that may be the American V Star, some have slightly different exhaust, you could use a hole saw and just pull out the last pipe...

[@benmartinez7203]

Does that require rejet?

[@Gothtecdotcom]

Shouldn't do, most of the back pressure comes from the first two baffle plates, but if you do it, keep checking if it is running a bit lean by checking the spark plugs...

[@Gothtecdotcom]

Only time, and I mean the only time, I've had idle and running issues is if old oil has got too cold... I change the oil before winter hits, and then after winter...

[@MorebadideasGAME]

This might be better than drilling the whole thing out. lol

[@Gothtecdotcom]

See the update video where I've put in 8 holes per can and enlarged them to 10mm

[@coopidon]

It sounds worse than stock, it sounds like it is broken. Basically you mangled your original exhaust instead of buying one that is made to sound better and looks clean as well.

[@Gothtecdotcom]

Firstly, it is a rat bike... Secondly, stock mic on the camera makes everything sound crap...

[@StevenHeichX]

you're right

[@Gothtecdotcom]

OoooOOO just thought run the bike, take it for a good run... That expands the metal of the the exhaust thread and it makes it alot easier to remove the bolt... But mind your fingers and it all burns O_o

[@di15woods]

Looks dead rough. Should devalue the bike quite a lot seeing as a new system costs over £1000

[@Gothtecdotcom]

No devaluation at all, did it to my last dragstar and it was in mint/new condition! and I'd entered in in shows and got a lot of very good comments about it! The bike is better with a moded exhaust, than with standard. As the bike itself was dead rough when I got it I doubt its made any difference! Saying that the annoying sound of a standard exhaust with the AIS still fitted just means when you start up its sounds awful...So when you go on to sell it you start up the bike and just look at the face of the guy buying it and know he's going to hand over the cash!

[@Gothtecdotcom]

Oh and once painted up with exhaust paint it looks a hell of a lot better! I've seen worse looking exhaust mods on others dragstars...

[@StevenHeichX]

that´s bad for motor ? for that purchase cobra exhaust pipes

[@witoldfijalkowski5744]

Tez nawiercilem w swojej virago dzwoek fajny

[@waldamerek]

Szkoda tej roboty. Kiepski efekt, nawet na słuchawkach.

[@Gothtecdotcom]

yeah just a crappy microphone..

[@gcsmowfo]

I agree with the first part of your first sentence "You'll drill through very quickly" That's the whole point of what I'm saying. As for snapping the bit, I disagree. You can tell when you're getting close so I back off. Do you realise that you said "Basically" 12 times in that video? So Basically I agree with what you're saying and I'm going to be doing basically the same thing to my wifes bike basically, however I'll be making a few basic changes to the drilling technique basically and hopefully the end result will be basically the same as yours .......... basically. :)

[@Gothtecdotcom]

Up to you... have fun :D

[@Gothtecdotcom]

I did go up to 10mm in the end

[@lucianoalvez5501]

Love dragstar kkk

[@TheRADMAN2009]

Dude lose the nail polish & invest Ina variable speed drill!

[@Gothtecdotcom]

No

[@jackburton4146]

good video, bad nails...just saying

[@paulacabbo466]

thats horrible, remove the final baffle and pipe or get some roadburner street pro's 2.5 or 2.75

[@Gothtecdotcom]

Forcing a need for a rejet... The point of this was improving the sound with-out the need of a rejet...

[@paulacabbo466]

no need to rejet with just an exhaust change, i left the stock #90 jets in, been running perfect for the last 30,000 miles. i opened the pilot mix screws a half turn but that was more to stop deceleration popping not for performance, the road burners have baffles in them their not free flowing straight pipes on top of that i wrapped the baffles like V&H pipes so the back pressure isn't much less than stock, vstar 650 carbs are very forgiving when comes to adjusting, you don't need to get them perfect, if the oem pipes didn't have that crossover pipe you could get them to sound really good

[@Gothtecdotcom]

Yamaha says otherwise, plus, not spend cash on pipes and running with-out fails mot

[@paulacabbo466]

people that drill out motorcycle exhaust will come up with with all kinds of reasoning of why they didn't just get aftermarket pipes, but in the end it's comes down to the fact that they can't afford to buy a new exhaust system. not only do 650 mufflers sound crappy, they weigh a ton and look crappy too

[@paulacabbo466]

yamaha doesn't say anything, it,s a company. not a person

[@gcsmowfo]

Yeah ...... basically :)

[@Vladimirslawa86-wm5kv]

Почему все передачи не на русском языке

[@Михалыч-ж3в]

Нахера так газовать, самый звук у V-твина, до 3500 оборотов

[@samsungnote8913]

Why are you painting your nails?

[@Technewlogy]

Yuck why is he wearing nail polish?

[@Gothtecdotcom]

Been a Goth since 1996

[@drewlee-e8d]

Why is your nails black

[@Gothtecdotcom]

Goth, clue is in the channel name 😊

[@fullthrottle716]

Hahaha why would you , sounds crap, will need tunning and god knows now what tune setting

[@Gothtecdotcom]

Looks as if KZbin has sodded up the sound on this vid as well, having to re-upload videos, from years ago, because of file corruption on sound... No tuning required, because the final plate serves no purpose, or affects back pressure, it's only reason for its existence is to reduce the noise levels... that's all its there for...

[@puddumbig]

sounds worst=)))))))

[@Gothtecdotcom]

+Eroul Pătimaş Because of bad microphone, di say it didn't do it justice... so no it doesn't sound worse....

[@puddumbig]

i will try to do this to my bike too

[@zak203]

lol

[@godonjeffjeff8963]

Seroiusly... black nail polish?....

[@vstar7196]

Jesus Christ! That sounds positively pathetic.

[@klausxxx906]

Es hat lackierte Fingernägel 🤦🏼🤦🏼🤦🏼 meine Fresse....

[@Gothtecdotcom]

Goth!!