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Post by chehystpewpur on Sept 22, 2019 23:03:35 GMT -5
anyone know if the yasuni c16 or c20/21 exhaust would be suited better for a stage6 sport pro mkii cylinder? i have plans for a stage6 r/t cylinder when this one wears out but as its a newer cylinder it will be a while still. i keep getting mixed answers on searches and many people say the c16 is a better all around exhaust but many say the 20/21 is better. there are some stage6 exhausts that are also recommended like the r1200/r1400 but there isnt any real info on whats what and manufacturers dont state the peak rpm ranges like they did years ago so its making it tougher to choose. i have a stage6 pro rep and its alright but i can tell its deff holding this cylinder back at this point. max rpms dont matter too much in my book its gonna rev till it doesnt want to and my water cooling system is more than sufficient to say the least. 21 mm carb and malossi overrange to keeps revs where they need to be. larger reed block and custom super stiff reeds stage6 hpc crank rated for 16k rpms everything is there i just dont want to spend 300+bux when the time is right and wish i bought something diff for the exhaust. granted i could use it for a diff motor but buying 2 exhausts i could have bought alot more stuff if i only buy one. im just looking for whats gonna have the best peak gains at this point.
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Rune 75
Scoot Enthusiast
Posts: 441
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Post by Rune 75 on Sept 23, 2019 3:11:49 GMT -5
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Post by aeroxbud on Sept 23, 2019 6:11:55 GMT -5
The stage 6 R1200 exhaust is designed to be used in conjunction with cylinders hat rev up to 12,000rpm. The Stage6 R14000 is basically identical power curve to the Yasuni C30. It's really a full race pipe.
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Post by 'O'Verse on Sept 23, 2019 6:57:20 GMT -5
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Post by chehystpewpur on Sept 23, 2019 12:50:34 GMT -5
i used to have some of these articles bookmarked but firefox keeps misplacing my bookmarks and its getting pretty frustrating. thank you guys for the links. from what it looks like on some of the charts the c16 may fall off right after my current pro replica exhaust does so maybe a no go on that one. looks like ill be keeping my eye out for a good price on a c20/21 or an r1400 from stage6. the c20/21 looks like it picks up and keeps going right about where my exhaust would fall on its face.
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Post by aeroxbud on Sept 23, 2019 14:32:29 GMT -5
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Post by chehystpewpur on Sept 23, 2019 15:37:48 GMT -5
thanks for the article on the yasuni pipes aerox it helps a little bit though i wish it was with the cylinder i have/what i may get next. now that this thing will never have to be a daily bike again unless its just that much fun to ride im slowly turning it into a really fun toy. i took it out again today to get my pilot jet tuned a little better and i think i have it dialed in finally. i kept getting a flat spot and i think its gone for now. ill be lightening up my cvt here soon and that should help out alot i think. ive almost said screw it and used my zxr pipe again for fun factor but it would cripple my poor cylinder. much worse than my current pipe has. from the info ive found this sport pro mkii doesnt really wake up and make power till 12k-14k rpms and this stage6 pro rep pipe just doesnt want to get into that power range. right when it starts to wake up around 11k the pipe loses steam and power rapidly falls off but it sounds so cool i cant help but want to stay into it even though nothing happens lol.
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Post by chehystpewpur on Sept 23, 2019 18:33:35 GMT -5
overse is there an exhaust youd recommend over what im thinking? i need to get a new one as i think my current exhaust may have something to do with the reed breakage issue ive been having for a while now? the custom reeds i made have helped but the bike isnt as revvy as it once was due to the thickness of these things and i feel like i may need to go back to something a little more flexible and designed for a smaller motor.
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Post by aeroxbud on Sept 24, 2019 4:59:05 GMT -5
Just something to consider. If you fit most of these racing exhausts. You know you will lose the option of a centre stand?
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Post by chehystpewpur on Sept 24, 2019 12:26:26 GMT -5
you act like ive had a center stand lol. im pretty sure i lost that thing 15,000 miles ago so unless i hit 88 mph and go back in time i dont think that will be much of an issue. im really eyeing the c16 pipe as i got paid and have enough to get it. from all the digging ive done it looks like the peak will be higher on the c16 without revving quite as high as the c21 would but i dont really need the extra rpms i guess atleast not for now.
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Post by aeroxbud on Sept 25, 2019 2:45:46 GMT -5
Ok then let's answer this for you once and for all. Here is a dyno chart of your cylinder, with your pro rep. A Yasuni C16. And a Yasuni C20. www.pedparts.co.uk/c/asset/Stage6_Sport_Pro_MKII_Blog/yasuni_exhausts.jpgMyself I would probably go for the C16 pipe. Makes about the same power, at much lower revs. Would be a better pipe for the road. Unless top speed is all you want. Having it rev to the moon just to pull away gets old very quickly. |
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Post by chehystpewpur on Sept 25, 2019 9:34:54 GMT -5
im gonna keep my eyes peeled for the c16 unless i get a killer deal on a c20/21 as that wide powerband is so very tempting. with having gears for 90-120 mph that wide powerband would be pretty fun but the c16 will most likely be alot more fun for street use. i almost ordered one yesterday but decided to use my better judgement as its almost the winter months and i cant ride in the snow i mean i could but my neck would be broken im sure lol. i also have a feeling scootertuning is going to have a black friday sale or one during the holidays and i may be able to get a sweet deal on one as ive seen them go for as low as 150ish bux in past sales from them. i could buy both for the price of 1 at that point and use whichever is more fun.
you say the revving to the moon for acceleration would get old but thats why ive built this thing up. acceleration is my thing especially when i can have supercar/bike type acceleration for a fraction of the cost. i have a cb750 i need to restore if i wanna go fast or my blazer once i get a wiring harness for my small block swap and honestly id be surprised if i ever go fast with either of those. getting up to speed quick is way more fun to me than a few seconds on the drag strip to go fast or losing your license being dumb on the road or endangering others.
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Post by aeroxbud on Sept 25, 2019 14:26:03 GMT -5
I know what you're saying. But the C16 would probably best the C20 up till 30MPH off the line.
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Post by chehystpewpur on Sept 25, 2019 17:12:56 GMT -5
this is why i ask you guys these things. im pretty well versed but i dont know everything and somebody out there has more experience with things than i do its just simple facts. id just really wondered if i was looking at things the right way or not as im not super happy with the pro rep pipe i have at this point. its good and all and served its purpose but its just not what i need at this point in life anymore. im sure some of the abuse its been through hasnt helped its case either and cleaning it out might liven it up but its old and i need much much more than its willing to give me. i do really appreciate your help and hopefully i can return the favor for you someday.
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Post by aeroxbud on Sept 26, 2019 2:36:25 GMT -5
Good exhausts are not cheap. Only right you research as much as you can before buying. Better to ask questions, than regret a purchase.
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