I read through everything carefully and there was a reason for me posting the image. I will say this. Those ports are being shaped by a very, very knowledgeable rotary tuner, someone with vast roadracing motorsports experience on a professional level. No one has ever considered that Rick's ports may be very conservative per the application or request by the car's owner. Just because Rick ported the exhaust that way doesn't mean his ports will fit every application. It's a total package and must be altered to suit intake porting, etc...I'm willing to bet Rick isn't installing rotors which look like the ones posted below!

Michel

 

You absolutely right. Timing and size of the ports have to match your application. I was trying to discover which shape of port is the best flowing one. I would think general principals , like port shape is generic for all engines.



That rotor looks impressive. Clean work. So are you running a full bridge?

 

Just a large street port.

 

Oh your loving this too much Mr. RX7TT95 !

 

Now if I'd just stop having little problems like pilot bearings going out, forcing me to yank the entire engine/tranny combo, I'd get this motor broken in much sooner! 500 miles to go...I've been tuning vacuum and boost up to about 5 or 6kg/cm2. She feels really good. Sean, I think the GT4088 w/ the .94 hot side is going to be a very, very nice turbo btw...

Michel



[quote name='Zero R' date='Apr 21 2005, 12:25 PM']Oh your loving this too much Mr. RX7TT95 !


[/quote]

 

[quote name='rotarygod' date='Feb 28 2005, 10:46 AM']I learned the hard way that if you do not have an Inconel wheel, you will melt the turbine!


[/quote]



maybe you need sleeves with a small amount of expansion to keep the wheels in the turbo? or did it get better with the larger port/sleeve combo?