porting a zetec cylinder head

[millsn]

An activity I plan to conduct shortly.

1) Any advice?

2) Can I use an electric die grinder, do you use stones with it or is there some other method?

3) Any good books on the subject?

 

Nigel Mills - 2.0 zetec

[oilyhands]

I hagve some pictures somewhere of one of the Zetec heads I have done, a die grinder and carbide burrs will do the job, finish with spirabands.

 

Some example tools are on this website here.

 

Oily

[millsn]

CLicky doesn't seem to lead anywhere. How do you ensure that each port is opened out the same? Seems it must be easy to pinch rather more than you intended. Do you scribe a certain diameter on the outside of the port and aim for another inside perhaps using a no go gauge or is it a good idea to put it on a mill at some stage for the initial bore? I'm sure these are fairly daft questions when you know the answers

[millsn]

Got the link now, thanks

[Paul Formston]

Hi millsn to do this right you need a flow bench to ensure each cylinder is getting the same amout, I got AMMO to do mine I sent the head over to him and he had it back in about a week, and a great job he did to he also matched the inlet to the head so give him an Email Regards Paul

 

 

[oilyhands]

You can use an old valve turned down to the appropriate size to gauge the size of the ports.. if you keep the size and shape consistent there wont be much difference in airflow between the ports.

 

Oily