I am wondering where you all get your porting bits from? You all use carbide right? I am currently grinding down TMIC bolt towers on my UIM and have been using a dremel and a grinding bit I got with it. I went to Home Depot looking for a good bit set for doing this and for when I port my engine.



BTW: I have been working at that tower for about 2 hours now, seems like it is taking forever, or is this normal?



Thanks in advance.

 

Here is the bit that I am using. Works good, just slow.



Sorry about the blurryness.

 

I got mine from a guy on ebay who was selling a bunch of them. This was a couple years ago tho. Harbor Freight might have some...

 

Lubrication will help, you're grinding aluminum with a steel bit. I would use something that will take a bigger bite until you get closer to the manifold and need to use a little more finesse.



Also, you really should be using a die grinder



for the port work once you get there, a dremel doesn't have the rpm's that a pneumatic does. You may also want to get a pencil attachent for the die grinder, makes getting at those hard to reach places a breeze.

 

http://cgi.ebay.com/ebaymotors/ws/eBayISAP...&category=34999



Is this the set you were talking about? How are the quality of those bits?



Also, I do have a die grinder, just dont have a garage at my apartment to run a air compressor yet.

 

I would use a die grinder with a cut off disc, then a sand pad to smoot it all out. But since you dont have an air compressor, you just have to take your time with it. With the right tools, it shouldnt take more than five minutes. Or you can grind it down with a bench grinder.

 

FIVE MINUTES! HAHAHA those pics up there were 2 hours of work I did just order a 10 piece set of bits off of ebay for like 20 bucks, so when they get here I will continue with this project.

 

I've had good luck with a die grinder and cutting discs on aluminum. It's what I'd use, were I you. Actually, I'd first hit it with a hack saw and then maybe a course file. Then I'd finish it off with the dremel and a cutting disc and maybe a stone near the end of the work.

 

Ahh a hack saw....great idea! Thanks alot man.

 

That would take you no time with a dye grinder and a carbide tip.



The dremel is a waste of time if you are trying to remove large amounts of material.