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/)
-   -   your opinion on these ports (https://www.nopistons.com/rotary-engine-building-porting-swaps-55/your-opinion-these-ports-65905/)

hsmidy 05-22-2007 07:41 PM

hey guys



just wanted a few opinions on these ports here



[attachment=42087:attachment]



[attachment=42088:attachment]

Kim 05-22-2007 07:48 PM

That is some crazy big ports.

A close up would be nice.

I'm not even going to ask if they support the sideseals https://www.nopistons.com/forums/pub...IR#>/smile.gif

Did You bevel ?

hsmidy 05-22-2007 11:41 PM

hey im not sure aye i didnt do the porting, the engine they were in ran so im guessing that they made sure the side seals were supported,



heres a bit of a close up

[attachment=42089:attachment]



i was just lookin at doing a port similar to this on an n/a engine



it supossibly made 160kw at the wheels

Lynn E. Hanover 05-23-2007 08:06 AM


Originally Posted by hsmidy' post='872753' date='May 22 2007, 09:41 PM

hey im not sure aye i didnt do the porting, the engine they were in ran so im guessing that they made sure the side seals were supported,



heres a bit of a close up

[attachment=42089:attachment]



i was just lookin at doing a port similar to this on an n/a engine



it supossibly made 160kw at the wheels





With no better picture, I am guessing that the bridge is far to thin and will crack after short use. The longer the bridge the thicker it needs to be.



Lynn E. Hanover

hsmidy 05-23-2007 07:32 PM

cheers for that bit of advice lynn

hsmidy 05-23-2007 11:24 PM

ive got another question which one of you more experianced people might know ,



now increasing the port size out to the side eg bridge/j-port increases you inlet and exhaust over lap/port opening time right. but what if say you had a bp and you moved it up more towards the top of you plate or to the bottom



as shown in red

[attachment=42109:attachment]





vs



[attachment=42110:attachment]



what i want to know is how would ech one of these ports effect the engines characteristics



would it **** the power band up down etc



any insite would be much appriciated,

84stock 05-26-2007 10:26 PM

That looks like a 6 port endplate hogged out to one big super bridgeport. i can't see any good velocity or proper flow happening here.


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