50x50 98cc stroker build

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Limp1144
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Re: 50x50 98cc stroker build

Post by Limp1144 »

I like what I see keep it up.
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Re: 50x50 98cc stroker build

Post by xxgamerxx »

just a question im also planning on building a 98cc stroker how reliable is a 98cc stroker?
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ped
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Re: 50x50 98cc stroker build

Post by ped »

xxgamerxx wrote:just a question im also planning on building a 98cc stroker how reliable is a 98cc stroker?
they're not as reliable as a Italian bbk. but I know of someone with 8000 miles on his still running.
Life's a trip enjoy the ride.
94 elite SR, 86 spreedio, polini corsa, keli variator, 8.4, jet. speed 65 mph
spreedio video. https://www.youtube.com/watch?v=BZr46_-douQ
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ped
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Re: 50x50 98cc stroker build

Post by ped »

hi forum.
I'm going to install the motor on the spree for tuning purposes.
I don't use the panels and won't have to pull the seat :smile:
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Life's a trip enjoy the ride.
94 elite SR, 86 spreedio, polini corsa, keli variator, 8.4, jet. speed 65 mph
spreedio video. https://www.youtube.com/watch?v=BZr46_-douQ
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Downsouthdio
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Re: 50x50 98cc stroker build

Post by Downsouthdio »

Hello ped, where did you find the 50mm crank? Vt?
Honda super dio
Corsa
26mm
Sparrow
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ped
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Re: 50x50 98cc stroker build

Post by ped »

Downsouthdio wrote:Hello ped, where did you find the 50mm crank? Vt?
hey DSD. yes vt. you will have to cut your cases. :smile:
Life's a trip enjoy the ride.
94 elite SR, 86 spreedio, polini corsa, keli variator, 8.4, jet. speed 65 mph
spreedio video. https://www.youtube.com/watch?v=BZr46_-douQ
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ped
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Re: 50x50 98cc stroker build

Post by ped »

Hi forum.
plug seems a little Oily. :?
compression is at 130 psi. :smile:
going through some heat cycles. :nerd:
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Life's a trip enjoy the ride.
94 elite SR, 86 spreedio, polini corsa, keli variator, 8.4, jet. speed 65 mph
spreedio video. https://www.youtube.com/watch?v=BZr46_-douQ
1man8scoots
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Re: 50x50 98cc stroker build

Post by 1man8scoots »

If your plug is shiny black around the threaded area or at the ring it usually means you're too rich on the pilot, if it's shiny black everywhere, on the resistor tip, the arm, and the threads it means too rich all around and you will be building up hard carbon deposits. Being a tad rich is ok for break in, being too rich during break in and you can leave deposits on the piston, head, and ex port which can scratch up the bore and piston later.
Believe me I know it's a pain.
When you bored it to 50mm did you have to cut a lot like the 52.6 crank? Any fear of leaks out of the holes?
I'm thinking about doing a 50 x 50 or 50 x 51 and watching yours and taking notes!
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Re: 50x50 98cc stroker build

Post by 1man8scoots »

graphite9 wrote:You don't cut into the threads with the 50. That's the nice thing about that size. Unless you have a sloppy machinist who goes too large.
Thank you sir!
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ped
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Re: 50x50 98cc stroker build

Post by ped »

1man8scoots wrote:If your plug is shiny black around the threaded area or at the ring it usually means you're too rich on the pilot, if it's shiny black everywhere, on the resistor tip, the arm, and the threads it means too rich all around and you will be building up hard carbon deposits. Being a tad rich is ok for break in, being too rich during break in and you can leave deposits on the piston, head, and ex port which can scratch up the bore and piston later.
Believe me I know it's a pain.
When you bored it to 50mm did you have to cut a lot like the 52.6 crank? Any fear of leaks out of the holes?
I'm thinking about doing a 50 x 50 or 50 x 51 and watching yours and taking notes!
thank you 1 man. I'm always looking for great advice and input.
the 50 will not cut into the holes. there is very thin layer of metal left , more for sealing then support.
Life's a trip enjoy the ride.
94 elite SR, 86 spreedio, polini corsa, keli variator, 8.4, jet. speed 65 mph
spreedio video. https://www.youtube.com/watch?v=BZr46_-douQ
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Xxbeejay45xx
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Re: 50x50 98cc stroker build

Post by Xxbeejay45xx »

Nice its up and running! :popcorn:
95 Elite SR af16e
72cc Polini Corsa
28 Oko Carb 58/144
Ported intake
ZX Trans
Polini vari, clutch, springs
5.5 rollers
Malossi crank , CDI
Genuine Arrow pipe
Front and Rear disc brakes
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Stretch and fatty rear wheel
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Re: 50x50 98cc stroker build

Post by xxgamerxx »

tnx for the reply bro wat tops should i be expecting? rough estimate pls stock ports only on 50mm stroker block
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ped
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Re: 50x50 98cc stroker build

Post by ped »

Xxbeejay45xx wrote:Nice its up and running! :popcorn:
hi forum. motor is running. :smile:
doing some heat cycles and still tuning when I have the time. lol. :thumbwink:

here's a video of it running. https://www.youtube.com/watch?v=T8iRE50 ... e=youtu.be
Life's a trip enjoy the ride.
94 elite SR, 86 spreedio, polini corsa, keli variator, 8.4, jet. speed 65 mph
spreedio video. https://www.youtube.com/watch?v=BZr46_-douQ
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Re: 50x50 98cc stroker build

Post by 1man8scoots »

That's awesome! It likes to jump, if you're light it'll be scary.
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ped
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Re: 50x50 98cc stroker build

Post by ped »

1man8scoots wrote:That's awesome! It likes to jump, if you're light it'll be scary.
Lol thanks 1man. it likes to jump. 7.5gears. it was a little hard to do this video and give it throttle at the same time. the second half I lock the rear break and it won't jump. the video https://www.youtube.com/watch?v=T8iRE50 ... e=youtu.be
motor sounds good. Pickup some jets my local Yamaha dealer. Still tuning the carb :smile:

The Yamaha dealer had this Tmax 530 I think they wanted 10.500 for it. it looks cool. :shock:

Oop's sorry about the photo. ill see if I take another. : )
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Last edited by ped on Fri Jun 12, 2015 11:09 pm, edited 1 time in total.
Life's a trip enjoy the ride.
94 elite SR, 86 spreedio, polini corsa, keli variator, 8.4, jet. speed 65 mph
spreedio video. https://www.youtube.com/watch?v=BZr46_-douQ
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