The Wankler

iTrader: (14)

This is for a first gen, so the ports do not match our 13bs. I am posting here instead of the first gen section for my own personal reasons. The ports on here bother me. It attaches to a sidedraft carb. Notice the primaries, very wide, not long.

What is your opinion on these ports? Performance loss? Gain? The ports are wider then the gasket. Should I care?
Thank you,
Chris

slpin

iTrader: (9)

well...
grind till it fits....

84stock

iTrader: (5)

I agree, grind it to match the gasket after you make sure the gasket matches the block "first". Keep in mind though that a n/a 12a relies on some port mismatch the help with reversion on the primaries. This intake may have been designed this way.

84stock

iTrader: (5)

match the gasket against your stock "mazda" factory intake for port comparison.

The Wankler

iTrader: (14)

ok, I am more concearned about the width of the ports. They go beyond the gasket, and will be wider than the blocks ports. I thought that was the unwanted porting. I will port the height.

84stock

iTrader: (5)

Is the engine in the car? Consider widening the port on the iron to match

The Wankler

iTrader: (14)

The engine is with the builder. Maybe I am just to picky. The block will be steret ported, but even my SP on my 13b are not as wide as those primaries.

Aaron Cake

iTrader: (1)

Was the manifold ported with the intention of matching the gasket and block? If so then it just may be half done right now.