Porting is the term used to make changes to the intake, exaust and transfer ports in our 2 stroke motors. the roofs, floors and side walls of the intake/exhaust are opened up in specific areas to a specific size/shape. the transfer ports (these are side ports in the cylinder walls that allows the fuel mix to move from the lower case, to the top of the piston for compression and combustion) are also massaged a bit here in there. this creates more flow of air/fuel thru the motor, and when done right, you will increase the ease that the mixture moves thru the motor (easier to breath) and also increase the amount of fuel that gets into the combustion chamber. More fuel in the chamber, more fuel thus gets burnt, thus more power is made. now where and how much material is removed from the ports, and even which port, is what makes the motor run better, faster, stronger, more rpms, or as the case may be, worse, self destruction ect.. on bad port jobs.
the Ideal way to build a strong reliable motor that is running a tuned pipe, is to build the pipe for the performance you want, and have the motor match ported to the target pipe specs. this way your motors port work wants to work hand in hand with the tuned pipes performance, thus giving you one monster of a running unit. seems in RC things are done backwards, build/port motors and build pipes to try to work with the various port jobs. This is why one guy may run a rear Dom on one ported motor and love it, and the next guy will run the rear Dom on his ported motor, and it not run the same at all. even though the port work may be similar, again unless the work is Maticulasly done by hand, or CNCd for repetative finished product.
so the kit you have coming is just the ported 26 zen topend? what case/crank will this be going on? Brand/Size.
i have been lucky enough to see/run with alot of the good built motors. my 2 cents will go to Doug at ESP, not only is he a local to me here in Mi. his motors just freaking run Strong. i have around 7 gallons on my ESP 27.2 and its still a beast. though i shold prolly put a new ring in it before summer.
i only have around 1 gallon on my ESP TS 260 Reed case, and that units Fast as hell, and just now getting fully broke in when winter hit.
tanx again lads for the replys.
the unit i am getting is an o neills 27.2 ported big bore kit with 2mm stroker.
i understand a lot about real life cars porting work eg integra typer and so on but as far as two strokes go not much do i know about the port work done as i say the basics.
that has really helped me though timmahh,very intresting read.tanx
cheers btb,and slawhammer p.s slaw i am in the middle of reading your project over in rcu,great job,love it,great read,tanx.
true ducky,would be intresting to compare mmmm
ahead here like i said i cleaned down my car and started work on it tonight,i said i would post up some of the parts that came today,i changed my spur to elcon,they look great.got new fuel tank too my own was gone pretty dull.
also you will see lots of other bits i got,so i am calling this a service on the whole car,changed the wheel bearings also. new gearplate,clutch,clutch block and carrier and casing,new l/engine mount again alloy all replacing broken parts,new layshaft,this beetle is like new now.
said i would stick on the old body for now.
WAITING ON new body coming during the week along with the o neills kit,cant wait lads! here few updates on me and my car.
this is the start of a lot of new bits and pieces to my beetle,i allready have all allou diff,frnt &rear full alloy suspension, rear alloy brakes,cable set up,getting hydros for the front next too,doing a new bodyshell at the moment too its the old black one with checkerd designs,watch this spot lol
still running the cy29cc but at the end of the week my old zen 26 will be in it with the 27.2 2mmstroked o neills ported kit.
enjoy lads and thanks a lot for all the comments and help.
cheers!
more updates during the week.
