oh man...now you guys got me thinking

 

Of what?



I'm thinking 3 rotor turbo Renesis. All Renesis bits cept lower comp rotors on a 20B E-shaft.....but I have little kids & a old house to renovate as well as play with cars

Someone do this pleeeeeeease

 

As of right now, theres not a 3 rotor center housing with the side exhaust ports. So that puts one of my ideas on the back burner too...

 

I know.

A Renesis centre plate could be modded with a bit of ingenuity I'm sure, but then the 20B E-shaft wouldn't work.

13G E-shaft then! It's only money

 

I can't see why you'd reaaly want a side exhaust port turbo rotor? you'd just have lower gas velocity and temperature? The two things that will make the turbo more efficient?!!

Possibly might have less noise/emmissions though... but meh two both of those





I'd like a pure N/A 3 rotor PP inlet/exhaust with all the nice light RENESIS bits though, that'd be cool.

 

yah, that would be nice... but...$$$$$$ Id rather build a hybrid and try to keep it near a $1500 build.

 

ummm.. wouldn't you run into problems with the renesis rotors being balanced specifically front and back? putting them in a 20b that is..





GREG

 

you would have less overlap (or none like the stock renesis does) which is good for not letting boost go straight through the motor, not the most efficient way to utilize all the pressure the compressor is creating.



I don't have any numbers for how much exhaust energy is lost by moving the ports from the periphery to the side however... but the benefit of reducing the overlap may outweigh the losses.

 

I imagine a little overlap cant be too bad, right? It might insure a cleaner charge.

 

It get's complicated, but if your turbo is well matched to your setup (minimal back pressure) and reversion is not an issue, you can have problems with the opposite. The fresh intake charge going straight through during the overlap period, losing some air/fuel mixture and burning it up in the turbo/exhaust. This subject deserves a thread of it's own altogether, and it will probably attract more of the turbo guys that way too. I've only done a bit of reading on the subject, minimal experience with turbos here.



I don't think you will want zero overlap like the stock renesis has, but the peripheral configuration seems like excessive overlap for boosted apps, correct me if I'm wrong