Hi Guys

I am hoping some one on the forum can help me.
I would like to know if the RX8 engine rotors are the same dimensions as the 13b-REW RX7 rotors. In other words would a RX8 rotor fit in a 13b-REW engine? We are building a non turbo 13b and want to raise the compression ratio and also the lighter weight of RX8 rotors would help alot also.

Hope some one can help.

Regards
Henry

 

Well Henry,

You've come to the right place. We use these in similar fashion to what you're describing. They are slightly lighter than the FD's original rotors. You must use the cut-off seals or you will lose hp. You must cut the apex grooves deeper or you may break and lose a seal. The front is generally exchanged for the rear to take advantage of the fly cuts in the sides of the rotor for increased intake port timing.

Hope that helps.

Paul.

 

Just out of curiosity, what port type are you using?

 

Thanks for the replies.
The engine will have peripheral ports its a race engine.
I have been doing abit more research since i posted. I have read that its possible to machine the seal grooves to suit older rotor seals. Any thoughts on this and which seals would be best suited? Because the engine is for racing it will mainly run between 5000rpm and 9000prm most of the time.

Henry