ectonine

I want to rebuild my 1988 13b turbo housings using non turbo rotors instead. I want the extra compression, and I wan to run 10-12 psi. Has anyone run an engine like this, and are there any problems with the setup? Thanks.

Aaron Cake

iTrader: (1)

If you have a standalone and can tune, go for it. On the stock ECU, it's a bit risky but still can be done if you are careful.

ectonine

I don't want to run a stand alone. I just want a few extra horsepower. What would be a safe psi to run? Thanks.

ericgrau

iTrader: (1)

To safely run high compression rotors on the stock ECU, you'd need less psi than stock and you'd get lower horsepower than stock. That's why turbo rotors have lower compression than NA in the first place.

ForsakenRX7

Yea if you want a stock ecu you can drop this idea immediatly. Your gonna have to have a way to tune the car.

BklynRX7

Actually I dont believe thats true. If the compression is higher he may be able to run less boost than stock and get the same hp, or the same boost and get more hp. He would definitely need atleast a piggyback though.

ectonine

Why would I need a piggyback? Hot rodders change compression ratios all the time, and stll run turbo's or superchargers. Is there something particular to the rotary i'm not seeing? Does the knock sensor loose its mind or something?

STLDriftFC

iTrader: (1)

i am currently running the setup and you dont need a standalone. i tuned mine with a safc 2 and it runs like a dream.

Aaron Cake

iTrader: (1)

A piggyback will allow you to adjust fuel and keep it safely rich, so yes, you could run something like the S-AFC. It's not ideal, but will work just fine. You'll have to run richer then you could have due to the fact that you'll be running more timing then you want to. This will cost a bit of power.

The S-AFC approach certainly does work. Back in the day I ran high compression turbo on the NA ECU with nothing but an FD fuel pump and S-AFC. Not that I would recommend this of course.

The knock sensor is useless in preventing detonation.

ectonine

I think i'm just gonna go with it, and see what happens. Thanks guys.

TehMonkay

iTrader: (-1)

Ask jacob cartmill about knock and rotaries, he lives in bowling green right now.