port and polish
- Thread starter Mrbrocco
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The more you beat on stuff (quads, bikes, jeeps, etc.) the more you realize, looks ain't worth sh*t. FFF Form fits (or follows) function.
I'm not trying to defend or put down anyone.
I just think that the OP needs to bolt it on and see how it works before he complains. If it doesn't run well, then complain.
I will do several dyno runs for everyone to see; it will be video recorded to see what power the bike will make along with the torque curve. Each run will be non stop and I will pull off the intake boot to show that the intake port is stock.
The exhaust port, transfer ports, exhaust pipe, and carb set up will be my own.
The pipe will be Shearer, my head design, the carb will be 35mm, and the port widths and heights will be my own set up.
Maybe this will help people understand that the ultimate trail port; really is the exhaust port design, head design, and exhaust system.
For drag racing the set up is totally changed!!!!!!!!!!!!!!!!
The exhaust port, transfer ports, exhaust pipe, and carb set up will be my own.
The pipe will be Shearer, my head design, the carb will be 35mm, and the port widths and heights will be my own set up.
Maybe this will help people understand that the ultimate trail port; really is the exhaust port design, head design, and exhaust system.
For drag racing the set up is totally changed!!!!!!!!!!!!!!!!
he's saying you don't need to. the power is not found in the intake, but in the transfers exhaust port and pipe.
when you race someone and beat them, they aren't going to know that your port job is "ugly," just that they got beaten.
when you race someone and beat them, they aren't going to know that your port job is "ugly," just that they got beaten.
exactly quam, and Kennedy is right hey I am only on here because I am setting my nephew straight, does anyone know what a blaster reed will flow on a wet bench, I'll bet a stock intake will out flow it and if that's the case, don't put to much into it. Exhaust is where you need to concentrate and remember I believe its a 3degree taper don't just start hoggin certain percentage of a bore, correct radius to keep things from snaggin, things like that to the rookies let Kennedy and the others do it right and ask why is that, thats how you learn, if you got lucky and your cyl. ran ok after you were done you wouldn't know what exactly made it go, was it the transfers, the exhaust, maybe the cut head, you need to know what does what.
why hasnt mr brocco replied to kennedy respond? it seems that kennedy do knows his sh*t, but yea i odnt know any about porting and if i were to see that without any explanation from the builder,i would sya you got ripped of, but like xjma said "Chrome dont get ya home"
This will be the only flow numbers that I will post for people to read.
At 10 inches of water
The stock intake port flows 90 CFM
The stock reeds flow 28 CFM
The Rad Valve flows 25 CFM
The V-force reeds flow at ??????? You flow them yourself Sorry; I can not give all the info away
At 10 inches of water
The stock intake port flows 90 CFM
The stock reeds flow 28 CFM
The Rad Valve flows 25 CFM
The V-force reeds flow at ??????? You flow them yourself Sorry; I can not give all the info away
Yes; it does flow less then the the stock reed valve.
pics of old V-force reeds and new hand ported V-force reeds
http://www.flickr.com/photos/kennedypower/
pics of old V-force reeds and new hand ported V-force reeds
http://www.flickr.com/photos/kennedypower/
I beleive it is restricted for the purpose of velocity. volumn is not alwas beter than velocity, takes longer to fill the cylinder. THAT looks like sh*t i bet it slow!!!!! j/k. bolt it up then biotch!!!
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correct me if i'm wrong, but i believe a slower velocity in trade for higher volume is better for high-end power, but a faster velocity in trade for volume is better for low end.
it's a trade off with the dynamics of cylinder filling...... 0.o
it's a trade off with the dynamics of cylinder filling...... 0.o
thats correct. just like manifold lenght. i think velocity fills faster but at high rpm there has to be cfm or too small an inlet will be restrictive. i am not a pro 2 stroke builder by anymeans. and i could give a sh*t what something looks like. running bad ass is way better than lookin good
the piece you ported in the pic "Blaster_reed_new_handPorted_VS_OldV-force" can be removed...why didnt you just tose it to the side? its pretty much pointless unless you are still using a stock intake boot isnt it. Thats what i did to mine..i dont use my vforce anymore though.
i get it now. and thats probably why people say it gives out great throttle response and help the bottom end good. Add that with a 240 BB kit. and port. you've increased your top end. it balances out at a certain degree. and when its tuned right it will run very strong and reliable.
I don't know if this is a good port job, but I do know this, If the sole reasoning is that rough causes less turbulence, I would ask more questions. It does not take much research to understand that dimples (or "turbulators") on a golf ball specifically increase turbulence. I can explain how energizing the boundary layer increases the region of laminar flow and reduces pressure (wake) drag, but there are 100s of good websites that could do a better job than me.
Using this as the basis for flow in a jug rather than a sphere at a given Reynolds number is horribly flawed.
Using this as the basis for flow in a jug rather than a sphere at a given Reynolds number is horribly flawed.
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