Hey,

Reading this forum i more and more stumble on the word "ratsnest". I think you mean all the vacuumlines below the carb?

I now have a '85 1st gen. and it drives super and is completely stock. I live in the netherlands and for rotary engines there are no emmisionregulations. A lot of you removed this ratsnest but why? I know it cleans up the enginebay but gives it more power?
Can someone explain me what the positive and/or negative sides are to remove these vacuumlines maybe with some pics from before and after?

The rotary community here is small, i believe we have less then 250 7'ns of the 3 gens on 7 million cars

Marc

 

There is nothing wrong with leaving the 'ratsnest'. Removing it disables the emissions, cleans up the engine bay and eliminates the potential for future emission related problems. Any power gains would be from removing the air pump, which may net 1-2 more hp.

 

people remove it because they don't understand what it does. it does make the top of the engine cleaner.

there is no power gain, just simplicity

 

i prefer to leave it in place. i've seen more problems caused by removing it than by leaving it in place.

 

No performance gain, just turns the rotary into a gross polluter turning disappearing dead dinosaurs into green house gas. If you have access to the Mazda Factory workshop manual it makes it easy to test everything.
Mazda fixed the minuscule parasitic drag of the air pump by putting a clutch on it.

 

Ok, thnx for explaining..

Took a good look this morning and thought to myself.....hands off! Have no problems with the engine so i'm gonna leave it the way it is.

Only thing i saw some oildrops om our driveway this morning, can't really see where it's coming from, somewhere in the region of the oilpan i think. She stood still for 4 years when i bought her a couple of weeks ago and i did just a few hundred miles since then. I kept the revs down to let the rotary come loose but last weekend i pulled her up to 5500 revs a few times. Well winter is coming up and have plans for her