porting & cams

[autronicDSM]

1) what drills/grinding stones are good for porting the head? i want to try to port my exhaust side and manifold to see how easy it is.

2) is anybody using stage 1 crower cams? on their website it says that they improve power in lower rpm, if so how much improvement in torque?

 

[autronicDSM]

http://www.carbidebur.com/automotive.html i found this on some other board

 

[UltraImports]

I bought a carbide bur from Grainger.com. We have a local store, so I just stopped by. You can order online as well. I'd use a die grinder, because you may be there a few days if you are using a dremel. I ported and polished my exhaust side, and polished the intake side in a few hours. It's kinda fun. Good luck brotha. If you have questions, just ask.

 

[autronicDSM]

i already have a dremel which i think i'll try first. what die grinder do you have, electric or air?

 

[pneumo]

A Dremel will take very long. It just doesn't have the power. A die grinder works best, but a regular power drill will do the job, too.

 

[UltraImports]

air....just a few bucks at any major store (wal-mart, sears, etc)

I bought a little kit that came with sanding bits....that was an extra 5 bux. It's nice, so after I port I sand down any rough spots, then polish.

I have a friend who owns a shop, so he didn't care if I used his compressor. Most compressors should be sufficient.

 

[autronicDSM]

i know dremel is weak. i don't have an access to the shop or air compressor. maybe i should ask around fab. lab at school if they would let me in on a weekend...

 

[Black95GSX]

Get an electric die grinder... they are about $50 and worth it.

AIR Die grinders use a TON of air, I know I had problems with keeping a steady RPM on my die grinder with a 33gallon/150 PSI/5HP Air Compressor......


One thing though, when porting aluminum.. make sure that your bit is well oiled, and pause ocasionally -- otherwise it'll get so hot that it'll weld itself to the aluminum.

 

[UltraImports]

You've got a point. I had access to a compressor, so it was cool for me. An electric die grinder would be just as good if not better. Definetaly take time to let it cool off. I have a few pieces of aluminum in my bit.

 

[autronicDSM]

thanks for all the info guys.

 

[Talondsm18g]

WHat are you using to polish guys?

 

[HighPsi91]

There are special burrs that are meant for nonferrous meterials. They work much better than standard carbide burrs on aluminum.