[jmbanshee]

someone can give me the stock port duration in degree of a banshee cylinder ??? i already ear 183 ex 118 trans -----186 ex 120 trasfer etc etc but what was the real numbers ???thanksss jm

[camatv]

they vary. just think about how wonderfull the assembly process is at the factory..

all you really need to know is they suck. whip out the degree wheel and just measure a set. the base gasket thickness can vary them as wel as tolerances in piston, rod and cylinder,

[Radar]

About 185/115

[jmbanshee]

ok i just verify the mesurement from the top of cylinder(deck)and got 29mm on the exaust and 43mm for the transfer and 44 for the intake boost port,,,can someone can give me the duration of that mesurement ??? thanksss jm

[stpltn250r]

If its 0 deck heigth. 110 rods and stock stroke. Then,

Exhaust - 185*
Trans - 120*
Boost - 114*

[average_joe]

can get a degree wheel for $15 or make one for free. necesarry tool for building engines

[stpltn250r]

Kinda what I thought. I used a protractor and traced it to paper. Cut a hole in the middle. And boom. Degree wheel. Set the wheel at 0* at the top of what ever port your measuring. Roll it through BDC and record it when it closes the port your measuring. And there's your duration.

[jmbanshee]

i already have a degree wheel but i was looking for some mesurement in mm from de stock deck height,,because sometime the client bring me just the cylinder ..anyone have a chart of mesurement with duration ,,thanksss jm

[Buttermilk]

The length of the rod will need to come into play, as well as the piston/cylinder relationship (deck height) to figure port durations.

Not really as cut and dried as a simple chart....

There's a software program that was floating around that would do the calc's for you if you input the proper information.

I've got a spreadsheet setup to do my calc's....


Regards,

Rog

[average_joe]

i only work on my own stuff but if i was to go into the banshee porting business i would buy a old junk bottom end to bolt the customers jug to.

[jmbanshee]

i need some mesurement for 350cc banshee,,, stock stroke,,, stock rod ,,,stock piston,,, 350cc motor,,stock deck height,,,alll stock,,,,, someone must have that mesurement????no need to put the degree wheel on if we got mesurement in milimeter from a stock deck height..thankssss jm or if you got the mesurement from a zero deck height just give me it like that thankss

[average_joe]

is this a one time thing your doing for a friend or you plan to have more clientel ? im finding it odd you doing work for other folks but dont have the proper eqiupment on hand. might be your first and last customer if you wont even add a degree wheel to your tool box lol. it takes money to make money. seen a set of old cases and crank shaft on ebay. was $300 i think. can bolt all you future customers jugs to that and atleast give the impression your a professional business

[jmbanshee]

i got a degree wheel,,,, i got all the tools ,,,it;s not a matter of tools ,,,may be you don't understand what i need or i don't explain myself the right way ???i already have a clientel for banshee and the client are always satisfy ...i don't try to tell you i'm a pro but all the banshee i have done are running great ....here we don't run for money we run for fun so ....the only thing i can tell you is why put the degree wheel on a stock banhsee if i know the number are not good ???i always do stock banhsee motor so i don't have to bother about 4mm or 7mm 10mm,,so thankss everyone anyway,,, maybe i don't explain my self the right way thankss

[camatv]

oh wow sorry i have to..


if you have already done a bucnh of motors and they all scream and work great why do you need to know stock port durations? if you only do ss stock rod 350 banshee motors then you dont really need the stock measurements?.

seems the stock port durations are up there a few posts so what else do you need to know? the programs are really needed for that reason i love to be able to do an entire motor and degree it all in. but its not going to happen every time.. and also you can use the program to figure if an existing port job will work with differnt rod/ stroke combo's and what they may have efect wise on squish, deck height and other factors..