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/)
-   -   Why Is Porting Still Done By Hand? (https://www.nopistons.com/rotary-engine-building-porting-swaps-55/why-porting-still-done-hand-48622/)

Speedworks 10-22-2005 05:22 AM

"Typically we would use the CNC to cut the ports the same as Mazda does, down

about 1/8" and then blend and polish by hand. We have not set this up for

bridge porting as of yet due to lack of time."





This would make the best sense of all by my guessing. One of the major factors on power increase due to porting is t he port shape. If this can be done with a CNC and the rest of the runners ported by hand you do not need to worry about the port shape, sliding way with your bit etc.



Cost will be the issue but then again.. I would consider it.

G_RIDE 10-26-2005 07:28 PM

THIS IS MACHINED??? WHAT WRONG WITH IT???

teknics 10-27-2005 05:18 AM


Originally Posted by G_RIDE' post='773037' date='Oct 26 2005, 08:28 PM

THIS IS MACHINED??? WHAT WRONG WITH IT???



the little piece thats chipped off the bottom of the bridge.



kevin.

j9fd3s 10-27-2005 09:46 AM

mazdacomp used to sell housings with the bridge cnc'd into em. they werent finished at all, the cnc was just to speed things up

G_RIDE 10-28-2005 01:57 PM


Originally Posted by teknics' post='773133' date='Oct 27 2005, 03:18 AM

the little piece thats chipped off the bottom of the bridge.



kevin.



actually that isnt a chip, but im sure that was one of the first ones they made, and by the time 10 were done they would have the process corrected

teknics 10-28-2005 02:26 PM


Originally Posted by G_RIDE' post='773557' date='Oct 28 2005, 02:57 PM

actually that isnt a chip, but im sure that was one of the first ones they made, and by the time 10 were done they would have the process corrected



its still something wrong.



https://www.nopistons.com/forums/pub...#>/biggrin.png



kevin.


All times are GMT -5. The time now is 03:11 AM.


© 2024 MH Sub I, LLC dba Internet Brands