6 port Bridgeport ???

N.RotaryTech · 04-08-2012, 07:52 AM

Not sure if this is the right way, but this is the way I did my 1st B-port. It's worked for me so far.
Free-hand.

This motor is actually the result of 2 separate porting projects. The bridges are the latest addition.

IIRC I used a 1/8" drill bit, so I was being very cautious. But Ive heard you can use a 3/16" drill bit?

There are some pictures of what others have done on google, if you type in: Rotary Bridgeport, Bridgeport 6 Port, etc. To give you some idea's.

RotorDad · 04-08-2012, 09:12 AM

Here are a few other BP 6 port plates.

04-08-2012, 07:52 AM	#1
N.RotaryTech Home-brew Rotary Join Date: Feb 2008 Location: GooseCreek SC Posts: 552 Rep Power: 18	Not sure if this is the right way, but this is the way I did my 1st B-port. It's worked for me so far. Free-hand. This motor is actually the result of 2 separate porting projects. The bridges are the latest addition. IIRC I used a 1/8" drill bit, so I was being very cautious. But Ive heard you can use a 3/16" drill bit? There are some pictures of what others have done on google, if you type in: Rotary Bridgeport, Bridgeport 6 Port, etc. To give you some idea's. __________________ '89 RX7 GTU, half-Bridge-port S4/S5 NA, E6K, Full RB exhaust, weekend warrior. '83 RX7, The "this might take awhile" project. '87 RX7 GXL, Rest In Pieces. '98 Subaru Impreza Outback-sport, rx7 rescue vehicle, down for repair. '94 Ford Ranger, daily.

04-08-2012, 09:12 AM	#2
RotorDad Big Ugly Join Date: Apr 2009 Location: Fredericksburg, Va Posts: 591 Rep Power: 17	Here are a few other BP 6 port plates. __________________ *Boosted Big Body On 335's* PS3 ID: Rotordad 1986 Mazda RX7 GXL - Street ported 13BT, Haltech, 62mm, ect. 2006 MazdaSpeed 6 - Eagle, Wiseco, Cobb, ect.