Possible 4-Port N/A Start?

Buggy · 06-15-2010, 06:14 AM

I basically have the exact engine you want to build with a half bridge. Only difference is I have old school 4 port irons and housings. The half bridge is nice, makes really good power even at lower RPM. Mine still isn't tuned 100%, but I'm still fairly happy with it. With ITB's and a stand alone you should be in nice shape. As for the renesis rotors there are issues running them in older engines. As far as I know there are slight differences in seal design and placement on the rotors that make fitting them in the older engines a problem. I think it can be done, but you'll have to do some more research on that one.

infernosg · 06-15-2010, 09:09 AM

Quote:

Originally Posted by SLIDN2

Half Bridgeport TII engine NA (loving it).

Quote:

Originally Posted by Buggy

I basically have the exact engine you want to build with a half bridge. Only difference is I have old school 4 port irons and housings. The half bridge is nice, makes really good power even at lower RPM. Mine still isn't tuned 100%, but I'm still fairly happy with it. With ITB's and a stand alone you should be in nice shape. As for the renesis rotors there are issues running them in older engines. As far as I know there are slight differences in seal design and placement on the rotors that make fitting them in the older engines a problem. I think it can be done, but you'll have to do some more research on that one.

So what constitutes a half bridge on a 4-port motor? I always assumed a half-bridge referred to bridging the primary ports on the 6-port motors.

Either way, I still don't have a motor to play with. The seller of this particular one flaked out (just never called me back) even though it's still being listed as for sale. His loss...

vex · 06-15-2010, 03:08 PM

Quote:

Originally Posted by infernosg

So what constitutes a half bridge on a 4-port motor? I always assumed a half-bridge referred to bridging the primary ports on the 6-port motors.

Either way, I still don't have a motor to play with. The seller of this particular one flaked out (just never called me back) even though it's still being listed as for sale. His loss...

You can search for the exact definition of the half-bridge, but it's basically half the length of a normal bridge; hence why you won't have to cut into the water jacket.

http://www.rotaryengineillustrated.c...e-port-12.html

Their J-port is everybody elses Bridge port.

06-15-2010, 06:14 AM	#1
Buggy I've been Wankeled! Join Date: Apr 2010 Location: Mildmay, Ontario, Canada Posts: 260 Rep Power: 16	I basically have the exact engine you want to build with a half bridge. Only difference is I have old school 4 port irons and housings. The half bridge is nice, makes really good power even at lower RPM. Mine still isn't tuned 100%, but I'm still fairly happy with it. With ITB's and a stand alone you should be in nice shape. As for the renesis rotors there are issues running them in older engines. As far as I know there are slight differences in seal design and placement on the rotors that make fitting them in the older engines a problem. I think it can be done, but you'll have to do some more research on that one. __________________ 1976 Rx-4 hardtop. Half bridge 3B 13B, S5 NA rotors, Renesis e-shaft, stat gears, and bearings, balanced rotating assembly, RE dual weber 36 DCD's 203rwhp 137ft-lbs torque DGRR 2011 3rd place 1974 Rx-4 all original 27,000 miles 1988 Rx-7 TII 320rwhp. DGRR 2012 3rd place