YMS V8 pipe on stocK SA50

Does your Spree/Elite already run great, and you're trying to make it quicker/faster? Need a monster motor swap? Discuss your ideas here.

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Jaygen
BMX
BMX
Posts: 24
Joined: Tue Jun 04, 2019 10:12 am

YMS V8 pipe on stocK SA50

Post by Jaygen »

Bought this pipe new of a friend cheap, its the 72cc version. Would it work on my stock SA50 motor?
Im going Polini Contessa soon but IM really anxious to try it.
Im currently jetted at 78 would I have to rejet?
2001 Elite SA50P
Polini Contessa
YMS V8 pipe
Malossi Fly clutch x/TFC bell
NYC 1000 RPM contra spring
Polini variator 5.9 Polini rollers
9:8:1 gears
Stock carb 90 jet
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harleyracer59
Elite
Elite
Posts: 327
Joined: Tue Jun 05, 2018 3:56 pm
Location: Nickastan ca

Re: YMS V8 pipe on stocK SA50

Post by harleyracer59 »

I bet it runs better than your stock pipe, but you wont see full potential till you bbk. you still might need to upjet. only one way to find out. don't be skerd. lol jk
Jaygen
BMX
BMX
Posts: 24
Joined: Tue Jun 04, 2019 10:12 am

Re: YMS V8 pipe on stocK SA50

Post by Jaygen »

Well I installed it and it sounds awesome.. Nice throaty tone. However it seemed to lost some low end torque, top speed stayed the same around 44.
2001 Elite SA50P
Polini Contessa
YMS V8 pipe
Malossi Fly clutch x/TFC bell
NYC 1000 RPM contra spring
Polini variator 5.9 Polini rollers
9:8:1 gears
Stock carb 90 jet
User avatar
harleyracer59
Elite
Elite
Posts: 327
Joined: Tue Jun 05, 2018 3:56 pm
Location: Nickastan ca

Re: YMS V8 pipe on stocK SA50

Post by harleyracer59 »

did you up-jet or try lowering the clip/ raising the needle?.
its probably lean off idle
Jaygen
BMX
BMX
Posts: 24
Joined: Tue Jun 04, 2019 10:12 am

Re: YMS V8 pipe on stocK SA50

Post by Jaygen »

The clip is lowered but haven't upjetted. Polini Contessa kit on it's way too help out. :)
2001 Elite SA50P
Polini Contessa
YMS V8 pipe
Malossi Fly clutch x/TFC bell
NYC 1000 RPM contra spring
Polini variator 5.9 Polini rollers
9:8:1 gears
Stock carb 90 jet
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