600cc exhaust on a 150cc motorcycle?

[om4r]

Hi guys,

I've gone through a thread (http://www.kiwibiker.co.nz/forums/showthread.php/123509-600cc-exhaust-on-a-250cc-bike-Can-the-change-be-made?highlight=600cc+exhaust+250cc)quite similar to this but that wasn't conclusive enough for me to make a decision. I've got a Yamaha R-15 (150cc), can I put on a 600cc (R6) aftermarket exhaust on it for some gains (roar n performance)? The stock exhaust on this ride is not very loud :(.

I believe every exhaust is matched to a specific engine size and this always creates a doubt in my mind. What do you guys say? If this is possible what's the best possible place to get this done, so far I've got Custom Chambers on my mind. I live in Auckland CBD area.

Regards,
Om4r

[skippa1]

Hi guys,

I've gone through a thread (http://www.kiwibiker.co.nz/forums/showthread.php/123509-600cc-exhaust-on-a-250cc-bike-Can-the-change-be-made?highlight=600cc+exhaust+250cc)quite similar to this but that wasn't conclusive enough for me to make a decision. I've got a Yamaha R-15 (150cc), can I put on a 600cc (R6) aftermarket exhaust on it for some gains (roar n performance)? The stock exhaust on this ride is not very loud :(.

I believe every exhaust is matched to a specific engine size and this always creates a doubt in my mind. What do you guys say? If this is possible what's the best possible place to get this done, so far I've got Custom Chambers on my mind. I live in Auckland CBD area.

Regards,
Om4r

You can put anything you like on it but whether it will run allright is another matter altogether. There is a real science to getting an exhaust married to the right air flow in and out of the bike, with the right amount of fuel for the bike to run well at all positions on the rev counter. I would say that free flowing the exhaust to that degree would make it run as lean as and would require some pretty serious alterations to air filter, air fuel mix etc.
Then of course there is the matter of the noise that comes out of ot......it may sound like a fart in a tin can....


PS.....I should add that changing your exhaust will almost certainly mean a change in girlfriends as well......because you will end up spending all your time in the garage phaffing about with the the bike....

[avgas]

Basically what Skippa said. You can make anything work well (within reason).
I have had a ZX9R exhaust on a ZXR400 and was rubbish until I got the engine tuned to suit the new pipe.

If you just want it to make more noise. Simply bolt the muffler on. If you want a HP increase you will probably find that to get it past the stock mufflers HP will require quite some work (needles, jets, dyno tuning, advance CDI/remapping etc).

Factory performance parts are the way to go (not sure if GYTR make stuff for the 150 - but if they do it would be my pick).

As for the science part - completely agree also. But when it works, and it set properly the results are amazing. I really miss my ZXR400 - it was a fantastic bike apart from making me completely tone deaf at 100kph. (stupid harmonics)

[FJRider]

It's a bit like saying ... I've got a Toyota Corolla and want to put a muffler off a Holden V8 for some performance/noise gains ...

Your 150 will not sound (anything) like a 600 ... nor will you get (any) performance gains.

But ... you will ensure anybody seeing and hearing it ... will get a good laugh.

[SMOKEU]

Drill some holes in the muffler.

[ducatilover]

If you want to pull the boys, do it. It'll sound incredibly gay.
I doubt you'll release any HP with an R6 pipe, if you want more noise just do as SMOKEU said, but I'll say it again, it'll sound incredibly gay.

[GSF]

If you want to pull the boys, do it. It'll sound incredibly gay.
I doubt you'll release any HP with an R6 pipe, if you want more noise just do as SMOKEU said, but I'll say it again, it'll sound incredibly gay.

Pretty much this. It's a 150cc 4t, dude. You will not extract any decent poke out of it and it will just sound lame - like a giant fart cannon muffler on a Civic. Your stock muffler is designed by the manufacturers as a compromise between build cost, reliability, emissions and sound restrictions and performance, as is the whole rest of the engine. What you'll probably end up doing is make it sound like shit and run bad while pouring money down the sink.

And yeah, if I saw an R-15 with an R6 muffler on it I would piss myself laughing. It's like the guy I saw in Auckland recently who had a black Hyosung GT250R with Ducati decals on the tank. To the non-biker, they might actually think it's a Duke. Anyone with basic knowledge of motorcycles will think "what a fucking tool".

Unless you're turning this bike into a bucket racer. In which case I say full steam ahead, because buckets are awesome.

[Brett]

Well, if your 150cc is about 20-25 hp and an R6 is about 115hp by adding the R6 exhaust on your 150cc you can expect to get the average of the horse power of the two bikes. (25+115 = 140hp / 2 = 70 hp.) This is of course assuming you can buy the power band upgrade, or in fact install two power bands.





Taking the piss

No...there will be little noticable difference expect for a bit of noise.

[jasonu]

Unless you're turning this bike into a bucket racer. In which case I say full steam ahead, because buckets are awesome.

No self respecting Bucketeer would perform this modification (but I am sure there are quite a few with no self respect that would...)

[st00ji]

if you really want to go faster, put the exhaust money towards a bigger cc bike IMHO. much more reliable and cost effective way to gain HP.

if you just want to sound like the aforementioned 1300cc auto civic with milo tin riveted to the back, then follow smokeus suggestion :)

[5150]

Google is your friend :cool:

http://www.twobros.com/cgi-bin/shopper?search=action&sku=005-25801&searchstart=0&template=Templates/TBRSearchResult-Simple-Yam-R15-FULL-09.html

[5150]

Here are few other options


http://www.youtube.com/watch?v=Y4Sy3rZ2x78



Or if you are on the budget....... :pinch:


http://www.youtube.com/watch?v=ZCvGGuN8a9k

[awa355]

Here are few other options


http://www.youtube.com/watch?v=Y4Sy3rZ2x78



Or if you are on the budget....... :pinch:


http://www.youtube.com/watch?v=ZCvGGuN8a9k


A piece of plastic catching on the spokes sounds just the same, but if I was 9yrs, I suppose the plastic wouldn't look as flash.

[om4r]

ok ok I get it won't ask this again, this guy on trademe was tryin to convince me for buying an exhaust for my 150cc and he was confident that it'll be a good mod...me being a rookie needed your advice! bt now this mod is out of question. thanks fellas!!!

[Brett]

ok ok I get it won't ask this again, this guy on trademe was tryin to convince me for buying an exhaust for my 150cc and he was confident that it'll be a good mod...me being a rookie needed your advice! bt now this mod is out of question. thanks fellas!!!

Haha...welcome to the site mate.

[jasonu]

ok ok I get it won't ask this again, this guy on trademe was tryin to convince me for buying an exhaust for my 150cc and he was confident that it'll be a good mod...me being a rookie needed your advice! bt now this mod is out of question. thanks fellas!!!

Yes mate you copped a bit of (expected) flack for that.
Seriously though, if you want a deicent exhaust that doesn't weigh a ton and actually works
AND YOU ARE WILLING TO PART WITH A REASONABLE AMOUNT OF CASH call Chris Pickett in Titirangi 817 9500. He will sort you out.

[SMOKEU]

I still can't figure out why motorbike exhausts are so expensive. They can't be that expensive to manufacture, after all.

[ducatilover]

I still can't figure out why motorbike exhausts are so expensive. They can't be that expensive to manufacture, after all.

Because R&D is cheap! :banana:

Wait a sec

[SMOKEU]

Because R&D is cheap! :banana:

Wait a sec

Sounds just like another excuse for money. Could just buy one of these (http://www.trademe.co.nz/motors/car-parts-accessories/performance/exhaust/auction-499360896.htm) and polish it so it looks nice, then pay a muffler shop to weld on the brackets for the specific bike.

[ducatilover]

Ever looked in to building mufflers that flow well and don't sound like poo? A huge amount of scientific babble is what it takes. (I understand little to none of it)

Go the fart cannon though, put it on the Gixxer?

On the other hand, my VT250 with twin pipes, two standard mufflers that had the restrictor plates removed and were straight through, made the best power out of all the muffler set ups I tried. :lol: go the home made shit.

I don't see the point paying mega dosh for a slip on though, that's a bit derp.
What you need is one of these puppies 267603 it makes your top end so good it's invisible.

[FJRider]

What you need is one of these puppies 267603 it makes your top end so good it's invisible.

Given a steep enough hill ... it could still reach terminal velocity ... just ... !!!

[ducatilover]

Given a steep enough hill ... it could still reach terminal velocity ... just ... !!!

I live on a small hill, I could push it down the bank in to the river? :killingme

[R6_kid]

Do it. Your bike has fuck all power to start with so what have you got to lose? A friend of mine had one side of a Ducati 900SS Arrow exhaust system on his FXR150 and it sounded awesome. Didn't go terribly shit either, ran fine and used to crackle and pop on the over run going down hills. Everyone at rowing thought it was fucking awesome.

Buy this, make it work.
http://www.dan-moto.com/DM_INT/yzf-r6-1999-2002-gp-carbon-product-217.html

The guy has a good reputation as far as you get what you pay for but a 150cc single is hardly gonna blow it to pieces.

Otherwise, if you're a rich kid and daddy pays for everything, convince him you need one of these.
http://global.ebay.com/search/?Query=Yamaha+R15+exhaust&Region=0

[R6_kid]

Actually - this is a full system, for under $500 NZD. Reputable brand and will more than likely give you a power increase once you get a freer flowing air filter and have your fueling adjusted to suit.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=230746261856#ht_2067wt_1037