reed spacers

[ryskie22]

trying to figure out what is the best, to put the reeds behind or in front? they are stock reed cages with boysen reeds and 33 pwks, the only reson i have them is for clearence as many of you know. its ported and has cool head with 19cc domes, hotrod crank still a 350, straight cut gears,hinsen basket,im runing them behind right now and my bike doesnt seem like it whants to rev,mostly trying to figure out the pros and cons of the spacers, thanks for any help from you banshee masters out there!

[Bansh-eman]

it doesnt matter which side, personally i would put them intake side

[kawiking]

i ran my reeds against the cylns...

[monster_energy06]

reed spacers are made to ran between the reed cage and cylinder

[Bansh-eman]

reed spacers are made to ran between the reed cage and cylinder

there has been many descusions on where they "should" be placed, either way the A/F isnt going into the jugs it has to go the the crank cse first, so the theroy of moving the reeds back to allow more velocity is BS, it wont matter where you put it. jus make sure it seals so you dont lean out the motor and blow it up

[Snopczynski]

If you put it on the cylinder side, the biggest thing it helps is moving the a/f mixture into the cylinder past the step in the top of the intake port.

[ryskie22]

so i switched the reed cages around to the front today, it does run different, but for the real test would be in the sand to simulate the same load as before to see if it realy did make a difference, the biggest thing that i was trying to determine is if putting the reeds closer would make them open more and putting the reeds behind would delay the opening of them? wouldnt the intake velocity change and effect the way the reeds open?

[jbooker82]

Reed Spacers are ment to go between the Jugs, and the Reed Cage. Hence the name Reed Spacer. Having them inbetween the carb boots and reed cages can't be real good for flow. You have the small round opeaing of the carb boot, then it goes to the big opean area of the spacer. Then Back down to the smaller square opeaining of the reed cage. You dont want any flat surface exposed or sticking out in the wind stream because that causes turbulance.

 

Here is a pic from passion racings web page. He puts them inbetween the reeds and cylinders.

http://www.passionracingengines.com/

[blowit]

That pink sure is purdy.

[ryskie22]

so should i switch them, the cages to were i had them, behind the spacers? to help with turbulence?

[jbooker82]

I would run them like pictured above or just sell them and get a real intake. Boss racing makes one that has a built in internal crossover tube. It is also thick and it moves the carbs up and back so no reed spacers required.