[Land-speed] Sleeving a motor.. for the stay at home racer

Kirkwood saltfever at comcast.net
Tue Aug 9 14:50:02 MDT 2011


The difference in piston weight will only be a few grams and that can easily
be taking from the rest of them. Or you can mix & match pistons to get
weights equal. There is no issue changing crank counterweight, you can add
or subtract if that is the approach you want. Or you could offset-grind the
crank a few thousandths, no?



If this a record potential, and you are that close in displacement, or if
any cylinder is sized differently from the others; I doubt the engine can be
pumped. You will have to take both heads off. OK if you are heading home
after you get the record. :-)



Sleeving is a good deal because you are also getting a free port job. (less
cylinder volume flowing through the same port area is the same as enlarging
ports on std cylinders. However, depending on the engine, wall interference
and flow patterns are always an issue when you shrink cylinders.


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