NoPistons -Mazda Rx7 & Rx8 Rotary Forum

NoPistons -Mazda Rx7 & Rx8 Rotary Forum (https://www.nopistons.com/)
-   Rotary Engine Building, Porting & Swaps (https://www.nopistons.com/rotary-engine-building-porting-swaps-55/)
-   -   comment on bridge pictures (https://www.nopistons.com/rotary-engine-building-porting-swaps-55/comment-bridge-pictures-68343/)

-stig- 12-04-2007 05:31 AM

hello!



just wondering about this bridge port, does it look any good? ant comments?



just want some inputs before i start on the porting....



regards,stig

Kim 12-04-2007 11:23 AM

First picture.

I think you will strike water going that high with the bridgeport, stockport seems fine, I'll guess you've used a template for it.



Second Picture.

I don't know what center iron that is, just make sure there's enough meat when going that deep with the original port.

-stig- 12-04-2007 01:22 PM

thanks!



yepp, used a template, but i tought it came a bit high my self.. could you mark of where you think its safew to put it?



it's a series 6 center iron..

Kim 12-04-2007 03:19 PM

I'm no pro at this and never touched an S6 center iron, but check BDC website, you'll see his username when searching/looking around the engine/porting section of the forum

-stig- 12-04-2007 04:00 PM

thanks!!

BDC 12-12-2007 03:10 PM

Keep the centre plate port outlet small if this is a street driven car. Just focus on the transition points from runner to outlet. The bridgeport cut on the centre plate can be 1-1.25" in length. Secondary bridgeport 1.5 to 1.75" length. Bridgeport width start with 7/64" and clean up. Don't port up on the port outlet; just port down and focus on the transitioning like on the primary. No reason whatsoever to have ports the size of melons, especially when considering a bridgeport. The more iron material leftover the stronger and better the bridge itself will be.



http://bdc.cyberosity.com/v/EnginePo...Bridgeporting/



B

Kim 12-12-2007 05:47 PM

Brian, how do you manage to get your portrunners so smooth, mine allways looks rough ?

BDC 12-13-2007 06:32 PM


Originally Posted by Kim' post='889985' date='Dec 12 2007, 03:47 PM
Brian, how do you manage to get your portrunners so smooth, mine allways looks rough ?



A little trust and some pixie dust goes a long way.



B

Kim 12-14-2007 05:56 AM

haha, shake that ass



http://www1.istockphoto.com/file_thu...sexy_fairy.jpg


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