does anyone know the best way of porting and polishing the intake manifolds at home?

 

in for some replies! i think my brother might try this himself.. if so then ill get mine done as well

 

You port and then you polish.




A thread I had bookmarked from a while back:

http://forums.maxima.org/all-motor/2...d-porting.html

Basically, you port, then polish. There are certain dyes you can use that you apply to the ports, and the dye seeps into various levels of the metal (each dye goes in at various stages, i.e. 0.5mm, 1mm, 1.5mm etc.) You then port until you hit non-colored metal for an even port. Then you polish. Polish the exhaust ports, dont polish the intake. You leave them semi-rough (with the theory that the turbulence creates better flow).

Search around here and around the forums. Its not terribly hard, and a lot of machine shops can do it for you as well. The biggest issue is not to hit the water jacket. You're fawked if you do, really.

 

exactly what is this dye and what exactly do you polish it with if you dont mind me asking..

 

When I did the P & P on my intake manifold I used the products showed in the links below:

Basically you need to use a die grinder, you can get an electric one or use a dremmel and or some air tools. I did an extensive port & polish job on my DEK engine, I ended up blowing 4 dremmel, 1 Goodson electric die grinder ( 199$ ) and a chinese knock off that I got for 49$.

All the polishing of the exhaust port was done using a dremmel and an air die grinder using felt bob and black emery compound ( got that from caswell plating ) This should help you start.

Good luck.

http://www.jegs.com/i/JEGS/555/80900/10002/-1
http://www.goodson.com/store/templat...l.php?IID=7042
http://www.goodson.com/store/templat...302e4b3047cc80
http://www.goodson.com/store/templat...302e4b3047cc80
http://www.caswellplating.com/

 

thanks this actually helps lol