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Piston Overstress
Posted: Mon Dec 01, 2008 2:19 am
by SleepyKeys
The amazing part is that there is not one scratch on the cylinder walls. I only noticed a problem when I developed a misfire due to excessive aluminum dust on one plug. I'm going to put in a forged set this time. I guess not too bad for running over 100 gallons of fuel though it.
Re: Piston Overstress
Posted: Mon Dec 01, 2008 3:10 am
by Fred
Wondered where you got to :-)
Got any closer up pics? Hard to see whats up with them.
Fred.
Re: Piston Overstress
Posted: Mon Dec 01, 2008 3:12 am
by SleepyKeys
lol, yep could just clean them up and put them on ebay.
Re: Piston Overstress
Posted: Tue Dec 02, 2008 1:17 am
by longracing
You could always clean them up and call them "Lightened" pistons.
I used to race highly modified "Victor" lawn-mower engines in a go-kart, the funny thing was that they ran better after "seizing" the engine once then freeing the piston up with a bit of oil. Then they ran great for ages.
Re: Piston Overstress
Posted: Tue Dec 02, 2008 3:18 am
by SleepyKeys
more clearance less drag more hp more oil consumption(4 stroke)
Re: Piston Overstress
Posted: Wed Dec 03, 2008 1:47 am
by longracing
The Victa (Oops, just realised I spelt it wrong before
) engines were two-strokes but I get where your coming from, the extra clearance probably helped. We were reving them to 7500rpm, normally they only saw 3000rpm cutting grass.