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CRANKS
Posted: Tue Dec 27, 2011 1:41 am
by PurpleMonsta808
i have a stock sym dd50 crank running a 72 contessa fully ported thinking off going mini stroke
would it help me with speed?
would it be better?
and what brand mini stroke crank is the best?
Re: CRANKS
Posted: Tue Dec 27, 2011 2:04 am
by maddog
the sym engine just plain sucks
Re: CRANKS
Posted: Tue Dec 27, 2011 2:08 am
by eliteguy50
Yes. Better speed and acceleration. How much are you looking to gain.
Wait- are you talking about a new build with ministroker or using the contesss with a ministroke?
Re: CRANKS
Posted: Tue Dec 27, 2011 2:10 am
by PurpleMonsta808
as much as i can? y would it help tho with a mini stroke on it
Re: CRANKS
Posted: Tue Dec 27, 2011 2:48 am
by eliteguy50
PurpleMonsta808 wrote:as much as i can? y would it help tho with a mini stroke on it
ank combos with bores and pipes.
Better to go with a proper bore then. More pressure. There are more knowledgeable guys that will chime in later with brands and the optimal no clearance cutting crank-bore combos.
Re: CRANKS
Posted: Wed Dec 28, 2011 1:25 am
by sum-azn-kid
sym stock crank is fine. you can still smoke mini strokes if you tune it right. mini stroke you are going to have to add base gaskets. the polini bores were designed for stock crank i think they are best with them. or if you have the $$$ mhr full circle stock stroke. btw what gear ratio are you running? and pipe?
Re: CRANKS
Posted: Wed Dec 28, 2011 1:44 am
by tru72
AZn knows the power of a ported polini hehe
Re: CRANKS
Posted: Wed Dec 28, 2011 3:20 am
by PurpleMonsta808
im running 7.1 gears and a pg long pipe
Re: CRANKS
Posted: Wed Dec 28, 2011 2:08 pm
by veedubh20
Ran Dio pg long on a jog
kitaco 7:1
Re: CRANKS
Posted: Wed Dec 28, 2011 2:48 pm
by Bear45-70
PurpleMonsta808 wrote:as much as i can? y would it help tho with a mini stroke on it
In hi=performance "There is no replacement for displacement!" This especially applies to small scooter motors.
Re: CRANKS
Posted: Wed Dec 28, 2011 7:54 pm
by Trafficjamz
Bear45-70 wrote:PurpleMonsta808 wrote:as much as i can? y would it help tho with a mini stroke on it
In hi=performance "There is no replacement for displacement!" This especially applies to small scooter motors.
The polini bore is made with the stock crank in mind.
I am not sure if the extra displacement would be off set by the incorrect port timing of the Ministroke
eg: It may not rev as high with the longer crank.
Re: CRANKS
Posted: Thu Dec 29, 2011 12:17 pm
by sum-azn-kid
have you tried the scorp. pipe? and is this motor on a sym? they are heavy i think about 180 pounds.
i wish i kept that ported 72 corsa motor would been fun on my elite e. about 70 pounds lighter then the sym thats why i got it.