IV-Rotor Build: 12 plugs/ 9 bearings/ 8 ports = 1 monster

GtoRx7 · 06-09-2013, 08:56 PM

[b] The IV-rotor housings next to the workhorse 3-rotor semi p-port housings.

And of course, the triple spark plugs.

GtoRx7 · 06-09-2013, 09:00 PM

Some of the machine work for the center stationary gears

I wanted to save weight everywhere possible, and also make our 4-rotor look more "factory produced". So I shaved the center irons, which took some time to do.

As stated earlier, there are SO many things inside the engine that I cant photograph unfortunately. The intake ports, the exhaust ports, internal cooling methods. All this made taking engine assembly pics impossible. Sorry guys! Here she is all finished and assembled.

I made a fast custom engine stand to assemble the beast. Took a minute to think of a good way to do it.

The drysump plate all bolted on and ready to scavenge some serious oil

GtoRx7 · 06-09-2013, 09:02 PM

Temporary waterpump installed, front drysump pulley, custom trigger wheel for the electromotive

Think that is enough mag sensors? lol

GtoRx7 · 06-09-2013, 09:03 PM

Coil mount finished (12 coils..... whew) And the slide throttle fully machined and finished. The slider is out, while I fabricated the intake manifold.

Does this look like a machine or what?? The R26b would be proud. Notice the very straight shot intake manifold. This was the reason for all that chassis modification.

Wanted a nice lightweight alternator relocation bracket, so designed this one. All cnc of course. The aluminum front irons do not have any bolt provisions, so mounting brackets are little more difficult.

GtoRx7 · 06-09-2013, 09:04 PM

This is an endurance engine through and through, so I had to think out extensive planning on cooling methods. Having 1.5 years timeframe, it gave me time to come up with very clean and creative ideas. Here is a pic showing all the coolant feeds, and oil feeds. Once nice tight package considering there is 15 lines there!

CNC oil port plugs. Had "DAR" cut into them. Defined Autoworks Racing of course

Had to go old school on this one, the ITB airhorns were anodized the same green as my very first 20b back in 2004.

Another challenge was the variable intake. Uses metals that cant be welded, so I had some split flanges cnc cut. Notice the counterbore, this gave 1/4" more travel on the intake.

GtoRx7 · 06-09-2013, 09:06 PM

The famous n/a 3-rotor weight (same type 5.5" clutch, waterpump, lightweight flywheel etc. ) Impressive at 279lbs.

With t-5 dogbox tranny is at a low 376lbs.

And here is the assembled 4-rotor, 285 lbs. 6lb increase over race 20b.

And also weight with ultra heavy duty mid valley transmission. Still only 7lbs heavier.

GtoRx7 · 06-09-2013, 09:11 PM

There are still some temporary items on the setup, like the oil lines, unwrapped harness etc. But its getting very close.

06-09-2013, 08:56 PM	#1
GtoRx7 Rotary Fanatic Join Date: Jul 2008 Posts: 151 Rep Power: 18	[b] The IV-rotor housings next to the workhorse 3-rotor semi p-port housings. And of course, the triple spark plugs. __________________ DEFINED AUTOWORKS Where concept meets results Black 1994 FD 4-rotor 610rwhp all motor Red 1970 Mazda R-100 with 10a Black 1974 Mazda Rx4 Black 1984 Gsl-SE 13b-re streetport 230rwhp

06-09-2013, 09:00 PM	#2
GtoRx7 Rotary Fanatic Join Date: Jul 2008 Posts: 151 Rep Power: 18	Some of the machine work for the center stationary gears I wanted to save weight everywhere possible, and also make our 4-rotor look more "factory produced". So I shaved the center irons, which took some time to do. As stated earlier, there are SO many things inside the engine that I cant photograph unfortunately. The intake ports, the exhaust ports, internal cooling methods. All this made taking engine assembly pics impossible. Sorry guys! Here she is all finished and assembled. I made a fast custom engine stand to assemble the beast. Took a minute to think of a good way to do it. The drysump plate all bolted on and ready to scavenge some serious oil __________________ DEFINED AUTOWORKS Where concept meets results Black 1994 FD 4-rotor 610rwhp all motor Red 1970 Mazda R-100 with 10a Black 1974 Mazda Rx4 Black 1984 Gsl-SE 13b-re streetport 230rwhp

06-09-2013, 09:02 PM	#3
GtoRx7 Rotary Fanatic Join Date: Jul 2008 Posts: 151 Rep Power: 18	Temporary waterpump installed, front drysump pulley, custom trigger wheel for the electromotive Think that is enough mag sensors? lol __________________ DEFINED AUTOWORKS Where concept meets results Black 1994 FD 4-rotor 610rwhp all motor Red 1970 Mazda R-100 with 10a Black 1974 Mazda Rx4 Black 1984 Gsl-SE 13b-re streetport 230rwhp

06-09-2013, 09:03 PM	#4
GtoRx7 Rotary Fanatic Join Date: Jul 2008 Posts: 151 Rep Power: 18	Coil mount finished (12 coils..... whew) And the slide throttle fully machined and finished. The slider is out, while I fabricated the intake manifold. Does this look like a machine or what?? The R26b would be proud. Notice the very straight shot intake manifold. This was the reason for all that chassis modification. Wanted a nice lightweight alternator relocation bracket, so designed this one. All cnc of course. The aluminum front irons do not have any bolt provisions, so mounting brackets are little more difficult. __________________ DEFINED AUTOWORKS Where concept meets results Black 1994 FD 4-rotor 610rwhp all motor Red 1970 Mazda R-100 with 10a Black 1974 Mazda Rx4 Black 1984 Gsl-SE 13b-re streetport 230rwhp

06-09-2013, 09:04 PM	#5
GtoRx7 Rotary Fanatic Join Date: Jul 2008 Posts: 151 Rep Power: 18	This is an endurance engine through and through, so I had to think out extensive planning on cooling methods. Having 1.5 years timeframe, it gave me time to come up with very clean and creative ideas. Here is a pic showing all the coolant feeds, and oil feeds. Once nice tight package considering there is 15 lines there! CNC oil port plugs. Had "DAR" cut into them. Defined Autoworks Racing of course Had to go old school on this one, the ITB airhorns were anodized the same green as my very first 20b back in 2004. Another challenge was the variable intake. Uses metals that cant be welded, so I had some split flanges cnc cut. Notice the counterbore, this gave 1/4" more travel on the intake. __________________ DEFINED AUTOWORKS Where concept meets results Black 1994 FD 4-rotor 610rwhp all motor Red 1970 Mazda R-100 with 10a Black 1974 Mazda Rx4 Black 1984 Gsl-SE 13b-re streetport 230rwhp

06-09-2013, 09:06 PM	#6
GtoRx7 Rotary Fanatic Join Date: Jul 2008 Posts: 151 Rep Power: 18	The famous n/a 3-rotor weight (same type 5.5" clutch, waterpump, lightweight flywheel etc. ) Impressive at 279lbs. With t-5 dogbox tranny is at a low 376lbs. And here is the assembled 4-rotor, 285 lbs. 6lb increase over race 20b. And also weight with ultra heavy duty mid valley transmission. Still only 7lbs heavier. __________________ DEFINED AUTOWORKS Where concept meets results Black 1994 FD 4-rotor 610rwhp all motor Red 1970 Mazda R-100 with 10a Black 1974 Mazda Rx4 Black 1984 Gsl-SE 13b-re streetport 230rwhp

06-09-2013, 09:11 PM	#7
GtoRx7 Rotary Fanatic Join Date: Jul 2008 Posts: 151 Rep Power: 18	There are still some temporary items on the setup, like the oil lines, unwrapped harness etc. But its getting very close. __________________ DEFINED AUTOWORKS Where concept meets results Black 1994 FD 4-rotor 610rwhp all motor Red 1970 Mazda R-100 with 10a Black 1974 Mazda Rx4 Black 1984 Gsl-SE 13b-re streetport 230rwhp