This is the difference with different engine builders
Some people do some things different than other people
I find lower exhaust takes away from the torque the motor produces
I would never run my engines at 185, even for a free ride engine
My experience tells me that your engine will not make the power you are after
Some other engine builders will dis agree with me but each to there own
Im not going to give out my actual specs I run but its more than that
There is...
Yes at 83mm they will go better than a stock 81mm bore
but then your not putting in a big bore sleeve that gets into the transfer port volume with a 83mm bore
I dont see the point in going for big bore sleeves when you start reducing transfer port volume
I spend alot of time on my port jobs for...
I dont like going over 83mm
Have never seen a 83.5mm piston before , didnt know they were available in that size
Why is everyone so hell bent on getting the biggest cc out of there engine, its not an efficient way to get more power
People will sell you big bore engines etc because thats what...
two stroke engines are two stroke engines , because he builds them for race boats etc doesnt mean he would have no idea for skis
So the guy that you are talking about should be able to do a decent job
Making a sleeve that drops the ports sown to match the cylinder mismatch is fine
R&D used to...
It determined by the sleeve
the mismatch in the casting just means the port flows really badly until it clears the alloy then its progress,s to just flowing crap
I never tried v-force reeds on a boysen reed block
I think because the v-force don't bend as much to get the same air flow they are less likely to wear out
I never had any issue with v-force twos at all
well not true i did have a customer hydraulic a set but cant really do much about that
You will make a lot more torque
Its not just about timing its about airflow in a cylinder
Also the flow from the cases into the cylinder is a critical area
How much is it going to make difference well how much hp does a sport port make now
Its not something you can actually put a figure on but...
I have used v-force II for three seasons before replacing reed petals and i just did that to insure i didnt get a breakage in the future
I had a set of boysens i replaced the reeds twice on them in a season , they were lifting after a few sessions
V-force may be made of plastic but its some damn...
I do alot of port jobs for people , i dont need to run a sport port against another port job to know there will be a big gain
They have there purpose, but dont think you are even close to proper port job by an experienced person
The approach angle on the reed cage is of benefit but since they are the same between the reed blocks its not really relevant
We are talking reeds / reed blocks
Im not saying that the v-force doesnt out flow the Boysens, if i had to bet on it i would say they do
But im saying they sure as hell...
The cage angle on the v-force is smaller it has to be to allow two reed blocks to fit where they used to be one
Im not talking about aproach angle to the cases im just talking about reeds only
To put it another way
how far does the reed have to open to achieve x amount of flow
On a v-force...
Im actually building more free style engines than ever for people now
Infact its all I do now
When i am talking about the angle I am talking about the angle of the reeds on the stops
Ie i think its about 25 degrees on the v-force to about 60-70 on a stock set of reeds
The v-force will give you...
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