Listen to what chucky just said. To make a certain hp requires a certain amount of air and fuel.
You can go bigger but if the limiting factor is not the size but more the airflow then there is no point.
thats good info there
I have seen resleeved cylinders blow o-rings and people struggling to find out why.
It was because the top lip on the sleeve was to thin like chucky is talking about
I would say for for a liteweight flywheel
The lightened ones dont make a huge difference in my experience. however the alloy flywheels have been known to crack
there is a guy over here in aussie making 3mm stroker cranks so we can buy them
No the big bore cant make up for the decreased transfer port flow.
This is one of the reason people are making aftermarket cylinders
Of course you still have to port it, but big-bore sleeves require a bigger outside diameter on the sleeve.
The 61x already is lacking in transfer port flow and this just hinders it more.
The good thing about a 3mm stroker is it effectively increases the transfer port height to just about right...
I would look at a 3mm stroker.
the cases will not need to be clearanced and then bore it to 83mm on the stock cylinder
That way you can use the stock sleeves and not put in bigger sleeves and break into the valuable transfer port volume that these engines suffer from a lack of.
The 3mm crank...
Yeah in my op
I think if you asked Tim Judge, Bill Chaplin they would be of the same op
I have seen both of there top level case porting and they would be wanting to add epoxy as well
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