117+ cylinders breaking.

[Dave I.]

I haven't seen much on it lately. Is the issue with the sleeves cracking and breaking still a problem? Head hoggers talked about it a year ago. Sozo had it happen to him and I've seen one other do it. What was or is the fix?

[SoZo]

So it is happening with the stock sleeves. My case was I had a bad tune and I was running into detonation, but I still stand by the stock cylinders are absolutely crap. Fuel Moto kit offers a ductile iron 120ci cylinder I would recommend... I am just putting together my new build, 131ci custom sleeves , cut cases and a Dark Horse low end with Carrillo rods and no counter balance same Burns pipe and Ward heads and intake with a new bigger exhaust valves

[VDeuce]

So it is happening with the stock sleeves. My case was I had a bad tune and I was running into detonation, but I still stand by the stock cylinders are absolutely crap. Fuel Moto kit offers a ductile iron 120ci cylinder I would recommend... I am just putting together my new build, 131ci custom sleeves , cut cases and a Dark Horse low end with Carrillo rods and no counter balance same Burns pipe and Ward heads and intake with a new bigger exhaust valves

Please keep us updated. I am super interested in the removed counter-balancer, etc..

Jeff

[Sunny Jim]

Are you alleging that there is an issue with boring 107 cylinders to 117?

[Rusty Steel]

  Please do give us an informed opinion. I'm hungry for M-8 knowledge...

[Nastytls]

Why remove the counter balancer? What benefit could it provide other than additional vibration?

[Sunny Jim]

Well we have Fuelmoto, Tman, suburban and a host of others offering 117 and up boring of OEM cylinders and I haven't
Heard or read  any reports of breakage.

[HD/Wrench]

no issues on my end for 107 to 117 working good here

[Sunny Jim]

When boring the cylinder, can one use twin Cam torque plates?

[BVHOG]

When boring the cylinder, can one use twin Cam torque plates?

No, not even close