Dietbudda

Is there anything between a Brigde port and a 2nd stage street port? If so how streetable will it be. I'm looking at a bridghe for my new engine bvut don't want a 3G idle.

DriveFast7

iTrader: (1)

many misconceptions about bridgeports out there. . . . . .

My 12a J-Bridge idles nicely @ 1800rpms. Brapp - Brapp - Brapp -

They also get terrible gas mileage and need loud & low restriction exhaust to get the most out of them.

BIG streetport?

karism

I would recommend a 60 deg streetport,it will work good,and give ok gas mileage.

karism

Here is a pic of a 70deg streetport,done by Mr Paul Yaw

mperformance

how do you measure the actual degrees of a particular port job? Is there an easy way to measure or do you need some sort of degree wheel...

Jeff20B

iTrader: (13)

Or do you just measure from the bottom to the top? I think mine are like 70mm tall. Some how, that doesn't seams like the right way to measure though. I think a degree wheel is the best.

DriveFast7

iTrader: (1)

that's a nice intake port!

DriveFast7

iTrader: (1)

degree wheel

Jeff20B

iTrader: (13)

Yep, Yaw's got it.

pillage6

http://www.rotaryengineillustrated.c...-ports101.html

FuLLsMoKe

Does yaw still do porting?

mperformance

thanks...

85TIIDEVIL

iTrader: (2)

Wow... Some good stuff there....

karism

The right way would be to use a degree wheel.A easy way (not that accurate).Turn the eccentric shaft to the sport just before your intake opens.Make a mark on the housing.Turn the eccentric shaft clockwise (duh!) untill it closes again.Make another mark where it closes.

Turn the eccentric shaft the remaining area that the port isnt open,and then you can work out how long it stays open.

Thats how i do it,and its not that inaccurate

12abridgeport

So basically a 70 degree port means how long it stays open from the time it openes to the time it closes? Not the angle of the actual porting?

Jeff20B

iTrader: (13)

I think so.

DriveFast7

iTrader: (1)

Correct.