Does anyone know how to port the CEN MT2 engines? I am wanting to port my engine, I know that I will need to grind the exaust manifold as well as the carb opening. What else do I need to do to do this right??

Please help me.

I don't know what needs to be ported, but I know that there was an article somewhere online that talked about porting and I think they mentioned the MT2. I remember them or some one saying that there isn't much material to take off of the MT2 ports. Sorry I can't help more.

There was a very nice article in the February issue of radio control car action on page 180.


Joe

Is there any way to find that article online???

I've looked into porting my MT2 engine too, there really isn't a whole lot to do for it. The lower edge of the sleeve is pretty nicely rounded already. The boost port, (across from the exhaust port) although does have a slight angle already, could use a little work. Just smooth it out a little and give it a little bit more of an angle. The Schnuerle ports can use a little bit of smoothing and also you can make a little groove kind of like a guide port but not a true guide port, it'll help direct the flow or the air/fuel mixture away from the exhaust port. This is just a LITTLE summary of what came out of the Radio Control Car Action Magazine and they STONGLY recommend that the interior of the sleeve should not be modified in any way. They also recommend that you use a rubberized polishing bit to help smooth it all out even more. As for the exhaust port, they do not modify it so I can't give you any help with that.

** Warning - Doing this modifacation will void and manufactures warrenty. **
** Warning - Doing this modifacation will void and manufactures warrenty. **
** Warning - Doing this modifacation will void and manufactures warrenty. **
** Warning - Doing this modifacation will void and manufactures warrenty. **
** Warning - Doing this modifacation will void and manufactures warrenty. **
** Warning - Doing this modifacation will void and manufactures warrenty. **
** Warning - Doing this modifacation will void and manufactures warrenty. **


You will need :

. Rotary tool
. Fine Grinding kit
Use a bit that is
small enough for
you to work in the
tight corners of the
ports.


. Polising Wheel and polishing compound
. Masking Tape
. Permanent Marker
. Air filter mask
^ metal particals will fly everywhere.


Part 1. Remove the sleeve.

I'm sure you know how to do this.

2. Note port direction -

Look at the inside of the sleeve and note the bevel on the upper
sides of the ports. You will modify the sleeve on the outside by grinding
a simaler bevel on the ''square'' edges of the port.

3. Mark The ports -

When looking directly at the exshaust port, notice the two intake ports: one on each side of the sleeve.
You will grind the sides of the ports as detailed in the steps to come.
Begin by placing a piece of tape 1mm away from the edges, both on the
bottom and side, and use the permanent marker to color the exsposed 1mm gap.
(this will mark the limit of how far to grind)

4. Get Grinding -

With the fine cutting bit installed, grind away the
black area that you marked with the marker. Hold the tool at an angle that
matches the angle you noted inside the sleeve. Don't push hard with the grinding
tool, as the sleeve material is soft. ** IMPORTANT - Only remove little bits at a
time, you want it to be a straight edge but at the angle it was befor grinding.**.

5 Polish the new edges -

The raw edges of the ports will prevent gasses from flowing smoothly
as a finely finished surface would. Polish the new edges by placing the
sleeve against a polishing wheel. With a fine buffering compound on the
polishing wheel, slowly polish the ground areas till smooth.

6. Finished! -

Reinstall the sleeve and shim head. ** IMPORTANT - You MUST retune the engine before using for max proformance**.

Like me post? Does it help you? Anymore questions, just PM me.

Well? [sm=biggrin.gif][sm=biggrin.gif]

those porting tips that sweetshoes gave wont give you much of a gain imo
taking 1mm off the ports wont do a great deal for it.
there is alot more to do then just that

Like what??? I would like to learn what to do.

Belevie it or not petroplexi, it will do a whole lot.

I pulled some info off the internet and this is what I found. (1mm porting)

Well I cant get it to work right. i will just say that the stock went 118ft in 5 secs and the mod went 210ft in 5 seconds.

i was trying to put it as an attachement but i cant change the file to a txt or jpg.

That is all you need to do. I didnt get into detail because I did not want to type forever. But that is about 98.5% of what you need to do.