Jake P Wrote:
-------------------------------------------------------
> Did some searching and will probably put this on
> the wiki. Also did a port map of a stock jug since
> I couldn't really find one.
>
>
> A55 wiki page:
> http://www.mopedarmy.com/wiki/Tomos_A55_Performanc
> e
>
> This thread has good info on porting/tuning the
> stock carb from Jesse along with stock port
> durations:
> http://www.mopedarmy.com/forums/read.php?7,2077859
> ,2077971
>
> Here's a guy planning on doing some A55 porting
> based off Jesse's suggestions:
> http://www.mopedarmy.com/forums/read.php?7,2083094
> ,2083094
>
> Marvin Yee chimes in here on porting:
> http://www.mopedarmy.com/forums/read.php?7,2084579
> ,2084735
>
> Good reading on ignition and general stockish a55
> mods...
> http://www.mopedarmy.com/forums/read.php?7,1870109
> ,page=2
>
> good stuff on porting and ignition here...
> http://www.mopedarmy.com/forums/read.php?7,1962769
> ,page=2
>
> Wish the pictures in this one still worked. :(
> http://www.mopedarmy.com/forums/read.php?7,2058434
> ,2058774
>
> http://i34.photobucket.com/albums/d123/jakeperkio/
> a5550ccportmap.jpg
The Pic of the Ports, is that for a Stock Cylinder? I have the AirSal 65 cc cylinder and have cleaned it up but do not want to raise the Exhaust hole and remove Bottom end! I want to make as MUCH power Possible using as low of RPMS as possible! I widen my Exhaust a MM on each side and I re-angled the direction of 1 side of the transfers by about .5 MM to keep the flow from directly hitting each other but now pushing each other up and forward. I raised the Bottom of the Piston Skirt on the intake side 1 MM and champered the edge to keep the Piston from snagging on the Port edge.
I am geared 28 / 22 and peak rev limited to 51.8 MPH. I was using a stock carb (74 main, 30 Idle 210 infuser and 3rd from the top needle and unifliter stuffed in the Modded Airbox with 9-3/8" holes on the Rear Bottom and sides) Tecnigas Next R Exhaust and 050 Squish Head running 150 PSI
I have bought a Dellorto 17.5 and plan to insrtall and jet it this weekend!! (edited)
