SicSE
Veteran CEG'er
I used to have that problem with my die grinder... a few thousand too many RPM, I believe. Drop the speed on your dremel, if that's what you're using. A good drill works even better IMO.
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Ported 3L Guidance
- Thread starter mosh
- Start date
Swazo
Hard-core CEG'er
I found that the valve areas needed the most work. Casting lines and imperfections need attention. Also, the valve seats can be ported out to match the port better.
A non-ferrus cutting bit works really well for rough cutting the port, while leaving a little material removal for when you're sanding/polishing the port. I used sanding drums to clean it up smooth (I forget what grits, but a search on the old forums would tell you what you need to know) and cross buffs to polish everything up well.
Generally, I would gasket match the intake side, and port match the exhast side to the headers you're using.
The old forum has tons of info in it. I know I personally gave out gobs of info on what I did, and I know others did too. Bench flow #'s and real world data.
A non-ferrus cutting bit works really well for rough cutting the port, while leaving a little material removal for when you're sanding/polishing the port. I used sanding drums to clean it up smooth (I forget what grits, but a search on the old forums would tell you what you need to know) and cross buffs to polish everything up well.
Generally, I would gasket match the intake side, and port match the exhast side to the headers you're using.
The old forum has tons of info in it. I know I personally gave out gobs of info on what I did, and I know others did too. Bench flow #'s and real world data.
Seafire XV
CEG'er
To keep your cutting tool free from aluminum "slag", just keep it lubricated with WD-40. Works great, on any type of tool, from files and saws to cutting bits............
Bugzuki
Veteran CEG'er
I will try WD-40 next time. I used a solvent last time and it did not work so much.
Good job on the porting - Mosh.
Good job on the porting - Mosh.
Blackcoog
Hard-core CEG'er
I'd suggest you use a cutting oil vs. WD-40. I've always had much better results from cutting oil.
muntus
Veteran CEG'er
Once I found a tungsten cutting bit for my dremel, things progressed quickly(no wd-40 needed). If I had it from the beginning, it might have taken me an an hour to do the rough cutting and another 3 to polish. Instead, it took me like four for the rough stuff.