Why not turbo PP engines?

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Jan 18, 2010 | 08:01 PM

#26

j9fd3s

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From: https://www2.mazda.com/en/100th/

Quote:

Originally Posted by Liborek

for example BMW 3 liter twin turbo:low load/idle-less overlap, high load/midrange-large overlap, at high rpms it goes again back to less overlap, not for purpose of reduce it but delaying intake valve closing and earlier exhaust opening...

the BMW (and most piston engines) have a cross flow head. think about the path that the rotary has, its very different.

Jan 18, 2010 | 09:22 PM

#27

Chaotic_FC

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From: paradise Florida

Quote:

Originally Posted by nillahcaz

You're intake port is a good example of the higher port like the Racing Beat turbo PP housings by the looks of things, your exhaust would be a little lower still if it where me but its hard to say with just pics. I think you're setup should run well. If you do end up being unhappy with it try a little shorter exhaust port, Just ±1º overlap can have a noticeable change.

thank you!
I actually fucked up one of my rotor housings while trying to fit the insert.
I'm going to make a second set, but a little differently this time. I'm thinking of having the insert taper down to a smaller area port. I dont need an 11k redline.. maybe 9k. so with a smaller port, i should get a more usable powerband on the street, in lower rpm driving.

while we're on the subject of pp turbo, does anybody with experience have any advice on any changes to port timing and such?