Stroker built with ATC parts

[WILL_S]

Where in Aus are you Will?

North of brisbane

[atcmatt]

Sunny Queensland huh. Any dune riding up that way?

[WILL_S]

Sunny Queensland huh. Any dune riding up that way?

Was when i was kid up north qld

[HairyJR]

........Got some bits coming to build 125 cranks into 58+ strokers, will probably be used in my new build with 185/200 top end

This could be a interesting project, please do post additional information and pic's as you progress.

"HJ"

[big specht]

From what I heard the kawaski "Honda/Kawasaki hybrid" top end makes as much power as that will with out that much work. But that is just what I heard cause I was thinking of trying that too. I'm not trying to be a nagitive nancy cause I still think it would be cool to do.

[Daddio]

From what I heard the kawaski "Honda/Kawasaki hybrid" top end makes as much power as that will with out that much work. But that is just what I heard cause I was thinking of trying that too. I'm not trying to be a nagitive nancy cause I still think it would be cool to do.

What top end is used on that hybrid?

[WILL_S]

From what I heard the kawaski "Honda/Kawasaki hybrid" top end makes as much power as that will with out that much work. But that is just what I heard cause I was thinking of trying that too. I'm not trying to be a nagitive nancy cause I still think it would be cool to do.

Keen to hear about this too.
All the top end swaps i know about require studs to be moved ,case welding/boring and sorting out cam chain/tensioner .

[big specht]

What top end is used on that hybrid?

The same top end that is on turbo's big motor. I think it a klx style top end

[WILL_S]

[oscarmayer]

You know, instead of jacking with cast cylinders that are heavy and hold heat in, you can go to an alloy one. Much lighter, dissipates heat way better and they come in various sizes.
Www.tboltusa.com has them for sale. Check them out.


Sent from my iPhone using Tapatalk

[WILL_S]

You know, instead of jacking with cast cylinders that are heavy and hold heat in, you can go to an alloy one. Much lighter, dissipates heat way better and they come in various sizes.
Www.tboltusa.com has them for sale. Check them out.


Sent from my iPhone using Tapatalk

Are you talking about the atc 90/110/125 stud spacing ?
Or the monster above

[oscarmayer]

the ones where you show the cast iron stock cylinder instead of the alloy ones.
I took a 70cc bottom end, dropped in a 125 crank and rod setup, then added a 52mm long cylinder and finally ordered a 54mm piston. took the piston and cylinder to bored to fit the piston, then height checked the cylinder, half the time I had to have them shave off (1.5-2mm total) the bottom and top and this would bring the piston to perfect spec height. when done, I had a 143cc engine with 14-15:1 compression, big ass cam, and large valves. those little motors would scream!! the trans would bust. I would swap the top end over to a new bottom end and off we went again!
good times where those days. the sad, the 2-strokes would leave us standing still..... hard to compete against a race ready 70cc 2-stroke with a 140cc 4-stroke. they had over double the power and performance. we tried gearing and everything we could only to finally realize we had to change to a 2-stroke. so I swapped to a KX65 with an Athena 82cc BB setup, all ported. ran awesome tons of power, but the quad was too small. so we went to what we run now. Yamaha Raptor 125 converted to YZ85 with 90cc BB setup. so much faster, better and smoother than anything before!!!

[WILL_S]

the ones where you show the cast iron stock cylinder instead of the alloy ones.
I took a 70cc bottom end, dropped in a 125 crank and rod setup, then added a 52mm long cylinder and finally ordered a 54mm piston. took the piston and cylinder to bored to fit the piston, then height checked the cylinder, half the time I had to have them shave off (1.5-2mm total) the bottom and top and this would bring the piston to perfect spec height. when done, I had a 143cc engine with 14-15:1 compression, big ass cam, and large valves. those little motors would scream!! the trans would bust. I would swap the top end over to a new bottom end and off we went again!
good times where those days. the sad, the 2-strokes would leave us standing still..... hard to compete against a race ready 70cc 2-stroke with a 140cc 4-stroke. they had over double the power and performance. we tried gearing and everything we could only to finally realize we had to change to a 2-stroke. so I swapped to a KX65 with an Athena 82cc BB setup, all ported. ran awesome tons of power, but the quad was too small. so we went to what we run now. Yamaha Raptor 125 converted to YZ85 with 90cc BB setup. so much faster, better and smoother than anything before!!!

Cool build
Easier with 70 cases as the china stuff stud pattern is the same.
With the 90/110/125 trike stuff different pattern.

[oscarmayer]

they actually have some stuff now that uses the 90/110/125 pattern, you have to measure the stud hole pattern, then the cylinder height, (bottom deck to top deck) and finally the bore. some of the larger names like GPx and piranha use that pattern even some of the Lifan stuff does as well.

talk to t-bolt www.tboltusa.com Vince knows his . he an help you for sure. the cheapo Chinese uses the old 70 pattern, but the nicer Chinese stuff use the bigger pattern. i have a larger cylinder and head assembly. if you measure your stud pattern and get back to me, maybe we can work some deals out.