Piston port solid piston

i have it from a good source that alot of power can be made by running a piston port engine with a solid piston. didn't really get too much more info on it. anyone know anything about this?

Re: Piston port solid piston

Metra pistons are all solid, and they make damn good power for what they are.

Re: Piston port solid piston

damn straight.

Re: Piston port solid piston

well i'm talking about using a solid pison in a a35 jug. heard it makes crazy power but didn't really get any other info on it some just looking for some more

Re: Piston port solid piston

That's called 'power porting' and Graham Bell details it in the cylinder porting and scavenging section. Basically by reducing the blow-through area on the piston, you increase the impulse pressure on the fuel charge. -But that's a bit oversimplified.... read up!

Re: Piston port solid piston

anyone doing it?

Re: Piston port solid piston

and is it as easy as just swapping in a puch piston or other closed piston/closing the windows on the stock a35 piston? read the graham bell description. thanks

Re: Piston port solid piston

Got a link ?

Re: Piston port solid piston

The A35 is reed valve, not piston ported. Because it couldn't get enough fuel/air charge it probably wouldn't even run. Think about it, you would be blocking the main path of mix from the intake to the crankcase.

Re: Piston port solid piston

yeah, sorry. i didn't mean piston port. i ment blocking the intake windows and using a solid window. someone with a VERY fast a35 on here told me about doing it this way and i asked for more info, but he's very hard to get ahold of

Re: Piston port solid piston

It will increase the RPM range. Ideally you want to use either an A55 piston or a 50cc TCCD piston so you can really open up the exhaust port. The ring locator pins on stock puch pistons will only let you open the port up so much.

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