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Re: Improving a piston: porting, polishing...

Posted: Sat Dec 12, 2009 7:03 pm
by oldbiker
jason frost wrote: Image
To me that piston looks awfully weak, please let us all know how it lasts. I`m sure it`s going into a motor that has been well worked and puts out a lot of power so I REALY would like to know.

Re: Improving a piston: porting, polishing...

Posted: Mon Dec 14, 2009 3:18 pm
by Fred_64
sean brady scooters wrote:There is a very fine line between "hobby" and "mental illness".... :lol:

whats the point in weighing main jets.... :?
its the flow rate that counts.

next you,ll be weighing bulbs to compare with wattage :lol:
:mrgreen: There is absolutely no point whatseoever in weigthing main jets I fully agree, I just wanted to check if the scale whould measure the difference.

But..... who can tell the exact performance improvement provided by a larger jet;

- of course the engine runs better (if it was too lean previously)
- you shaved 0.03 gramms of you scooter (every little bit counts).

Ok on something weighting 90,000 grams + 70-ish rider (sorry I am a metric boy), 0.03 gramms is not that much, even F1 engineers would not bother... I must be really sick then :shock: :shock:

Nice idea though, :idea: if I can find different wattage bulbs I will weight them and let you know how heavier is a 5 watts tungsten filament against a 10 watts....

Now, where are my pills..?