Porting, What do you guys think?

Jeff20B · 05-08-2011, 05:12 PM

No templates. I measured carefully, scribed in some sharpie ink, then used a drill to do most of the work. Not sure what others use. Then cleaned it up with a dremel.

I never did bridgeports before. I was nervous too. But it's good to expand your skills sometimes. Always better if it turns out well.

Now I'm kinda nervous about my next engine. Gotta BP the intermediate plate because I have to use a reverse runner manifold in the application due to a lack of space. I already ported this engine to 74 spec so I'm not sure if I'll run the carb out of flow. I do have a Holley 600 to use if necessary, but I'd rather stay with the stock hitachi because it ran wonderfully in this car before. I also have a 390 holley but it is set up to use an open plenum so that won't work on a half BP.

There is basically a very real chance this half BP 13B won't work out as well as the 12A did. But if I think about that, it probably will turn out not as well. So I should concentrate on the positive like I did while doing the 12A and things will work out fine.

TS87FC3S · 05-08-2011, 05:53 PM

Measured from what?

05-08-2011, 05:53 PM	#2
TS87FC3S Ask Me About My WANKEL!!! Join Date: Jan 2010 Location: Missouri Posts: 127 Rep Power: 16	Measured from what? __________________ 1984 Rx7 Gs - stripped interior re speed coil overs, tokico blues, re speed crossmemeber and mustang rack, diamond star racing wheels 1988 Rx7 Se - Sold 1988 Rx7 GXL - Sold

05-08-2011, 05:12 PM	#1
Jeff20B Rotary Fanatic Join Date: Mar 2008 Posts: 215 Rep Power: 18	No templates. I measured carefully, scribed in some sharpie ink, then used a drill to do most of the work. Not sure what others use. Then cleaned it up with a dremel. I never did bridgeports before. I was nervous too. But it's good to expand your skills sometimes. Always better if it turns out well. Now I'm kinda nervous about my next engine. Gotta BP the intermediate plate because I have to use a reverse runner manifold in the application due to a lack of space. I already ported this engine to 74 spec so I'm not sure if I'll run the carb out of flow. I do have a Holley 600 to use if necessary, but I'd rather stay with the stock hitachi because it ran wonderfully in this car before. I also have a 390 holley but it is set up to use an open plenum so that won't work on a half BP. There is basically a very real chance this half BP 13B won't work out as well as the 12A did. But if I think about that, it probably will turn out not as well. So I should concentrate on the positive like I did while doing the 12A and things will work out fine.