Good choice on the first one, that is my fav. The second one was that soft or a stone? if it a stone I bet it laoded up with material really fast right? Did you pull the butterfly out?
The second one is an ALUMINUM OXIDE ABRASIVE WHEEL: -Perfect for cleaning, deburring, removing rust and polishing most metals, including stainless steel. I didn't pull the butterfly out, but I did block the hole that allows air to enter during idle. I wouldn't want metal shavings to fill up in there. The only thing I could have done was to polish it to a perfect shine. It wasn't necessary though. It turned out smooth and pretty.
By the way. The vacuum caps I used to cover up the inlet/outlet coolant hoses on those pics are size 5/16" for the EJ20. I am going to see this weekend if they will fit onto my old GC6's inlet/outlet coolant lines from the throttlebody, also. Edit- got them vacuum caps from Autozone.
<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote">Originally posted by bikerboy Where did you get that one? I would like to look at it. <hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote"> Matt, I got those abrasive wheels from Home Depot. They go for around $5 for a pair. It's an attachment that gets sandwiched into the screw-on bit. They look like thick plant roots that are shaped like a doughnut.
Chong, porting the TB is not an easy modification. I had to do a little section at a time and I had to do it very carefully. A little too much pressure with the Dremel tool and you've got yourself Tubulence City, or worse a bill for a new TB. It felt like I was porting cold butter with a spoon. I think the TB is made of soft metal. The intake duct I ported was a lot more difficult to shave than the TB. ...but if you had to do it yourself, you'd need a dremel tool (mine's rated at 35,000 rpm), those bits I posted pics of, a steady hand, and lots of patience. I now know why Matt said it takes about an hour just for the port job.
Fong: Good job, Looks really good for a first timer you did well my son. Did you do the back side where the second step is? As for the wheel I know what you are talking about I use the same one, it looks different in the pictures. As for the plugs, you really do not need to plug them since nothing runs through there except the coolant. Since you are not running coolant in there they can just be left to open air. Pluging it is not bad, actually it is probobly a good idea to keep road debris out of there. M
What back side? Was there something I missed? Or do you mean the ridge right before the butterfly? That's gone, too. If you meant the back side of the butterfly, I didn't think it would have made any difference for flow because at WOT, the butterfly is basically out of the airflow. Anything under WOT, I'd prefer to keep the same. Although it may be only marginal, a bit extra air in may affect my mpg. I could be wrong though.
