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Questions About Piston Design
Posted: Sun Jan 13, 2019 5:58 pm
by cal 67
In a late Bus did the pistons need to be as big and heavy as they were? I’m a machinist, and I see modern pistons, with thinner ring packages and shorter compression heights that could fit with some cylinder boring/honing. Because of the loads and head temps, were those bulky pistons used to survive the demands of the underpowered engines? Would lighter weight pistons work better?
Re: Questions About Piston Design
Posted: Mon Jan 14, 2019 10:34 am
by Clatter
If you were trying to build a Race Bus then lighter pistons would be helpful.
They make the stockers strong because they rev low, and take much heat abuse.
Some run the KB hyper pistons in a bus at 96mm if they are feeling like pushing the reliability envelope..
Re: Questions About Piston Design
Posted: Mon Jan 14, 2019 8:16 pm
by sideshow
That was the they were made with the technology/cost/metallurgy of the time. The same reason the dashboard has a total of two warning indicator lamps and no support for phone/map/messaging
I'm sure slipper skirts and thin ring packages wouldn't hurt