I gave up on those metal bits a long time ago. I almost exclusively used cutting disks. I did use a couple stones here and there though. I also use the sanding drums to create a nice bevel. 2mm @ 45º.
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Yeah, what Tyson said.
I use an air powered die-grinder with much larger bits. Mine is 8-10 mm diameter. Goes through the housing like a hot knife thru butter. Takes less than 10 mins per exhaust port, including sanding/finishing. I use a dremel with the flexi for the final sand finish, but the die grinder I just attack it from both sides without any probs. Practice, practice, practice! Have fun https://www.nopistons.com/forums/pub...#>/biggrin.png |
hahaha you newbie! https://www.nopistons.com/forums/pub...IR#>/bigok.gif
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#1 sentance you don't want to hear the guy working on your motor say.....
Porting Is A Little Harder Than I Thought.. |
Dremels suck for porting. I use a 1/4" die grinder with carbide bits for rough porting, and an 1/8" pencil die grinder for the detail work. 70K rpm, it doesnt overheat, and its small and easy to control.
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I love using a dremel and won't waste any time trying to use a die grinder the next time I port anything. The dremel allows better control and precision and the die grinder I had was very clumsy.
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Agreed, the dremel gives me all the control I want. No real need to rush it, and besides I wouldn't want to.
Sanding drums are awesome, its also a lot easier to stay even throughout the port. |
With enough practice, nothing is clumsy or too fast. Ive got some new bits I need to try on the rotor housings. Those take WAY too long when you start doing exhaust ports like this.
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I am porting a f-ed up throttle body and it is a bit harder than I thought, but I am starting to get the hang of it.
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If your just taking away massive amounts of metal then I guess a die grinder would do the job. But in no way would I ever use it for any sorts of detail work, one mistake and you got yourself a big gouge.
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