[bon]

I am still getting the engine together for my triton , i have the norton commando crank nearly finished and am just waiting on conrods before i can send it off to be dynamically balanced, i am using a morgo kit so capacity should be around 830 cc, i want to get the best from the cylinder head , is it possible to gas flow the inlet tracts at home ? I have never done head work before but would like to learn , can anyone give some advice or pointers or should i just send it to a specialist ?

Thanks

P.s i am using 32mm carbs.

 

[La Dolce]

I might not be smart enough. is the same as port and polish the inside of the head. yes you can do it home.

 

[bon]

Yes thats what i mean , more the port though as i believe the polish is a waste of time.

 

[bp131]

Yes you can do it at home but don't polish the intake. You can smooth out any high spots or rough edges with a dremel and the mini flap sander bit. Some where on the board I read that you want a bit texture (something like 120 grit) for better air/fuel mixture. And yes polishing has can be a waste of time. It will look pretty and will impress people but a soon as you fire up the motor it just get dirty. Then you'll ask how to clean it and people will tell you to "cork it" and go ride.

 

[Drew71]

I know its old and out of Date, but the Triumph dirt track T.T and Road race book from 73 says....

"The basic port shapes are correct, however it is recommended that any uneven surfaces be removed and the ports polished.
While some tuners recommend the expense of flow bench testing and reshaping of the ports, our development tests have shown no great improvement after this work is done"...... it goes on for a bit there listing people who do this type of work...

While it doesn't come right out and say you will get a better result from modifying the induction tracks, they seem to recommend this as a cheap "more bang for your buck" kinda modification.

Cheers

Drew

 

[bon]

Thanks for the replies , i found a copy of "triumph tuning" by stan shenton i forgot i had and it shows how to do head work.