'91 TII engine to '81 GSL notes

Project Goals

Min. 250 HP. Target 300 HP - 350 HP

"Factory built" appearance

Laguna Seca, August 28th, 2004

California Bureau of Automotive Repair (BAR) Vehicle Identification Label

148.3 KB
Title: spaghetti
Date: June 20, 2003
Description: Should I cut the red wire or the green wire? ;-)
76.2 KB
Title: SE front cover
Date: July 11, 2003
94.8 KB
Title: OMPs (MOP)
Date: July 11, 2003
Description: '89-'91 Electric OMP and SE
98.0 KB
Date: August 26, 2003
Description: Electric OMP with SE housing

88.3 KB
Title: Mod'd SE front cover
Date: September 24, 2003
Description: Turbo Oil drain and SE OMP installled
109.5 KB
Title: Oops!
Date: September 25, 2003
Description: '89-'91 H2O pump housing interference
114.2 KB
Title: more oops!
Date: September 25, 2003
Description: '89-'91 H2O pump housing interference
126.6 KB
Title: oops 3
Date: September 25, 2003
Description: Not even close... :-(

131.0 KB
Title: Check it.
Date: September 26, 2003
Description: Apply packing tape and machinist's blue
150.3 KB
Title: Trim this
Date: September 26, 2003
Description: grind areas with blue marking
78.5 KB
Title: Scott's picture
Description: Thanks to Scott Lelievre for the help on the H2O pump housing problem. His notes are here.
120.8 KB
Title: Modified TII trans
Description: Tail housing changed to maintain transmission mount and shifter location.

61.8 KB
Title: This should be easy... ;-)
Date: September 28, 2003
Description: There is only a few major parts and a handful or miscelaneous parts needed...
92.5 KB
Title: SE tank
Date: September 29, 2003
Description: Where do you find 12 mm hose?? At a European Service shop...
106.2 KB
Title: Crossmembers
Date: October 01, 2003
Description: SE compared to 12A crossmember. Note difference in engine mount holes.
142.9 KB
Title: Clean up
Date: October 01, 2003

147.6 KB
Title: Say ahh...
Date: October 01, 2003
Description: All cleaned up and ready for an engine.
158.1 KB
Title: It's in!!
Date: October 03, 2003
Description: The easy part is done. Now comes the time consuming part. The ECU...
108.2 KB
Title: Prototyping
Date: October 05, 2003
Description: My Frankinstein transmission has an unknown tail housing. It looks like a TII, but has a mounting point similar to a 1st gen. The guy that built it for a friend of mine, drilled new holes in the trans. mount to fit it to the bottom of the transmission. The result in my chassis is the mounting point is 1" too low. I need to have some Al blocks made to replace my wood prototypes...
99.3 KB
Title: RB exhaust
Date: October 05, 2003
Description: Racing Beat 80mm downpipe & presilencer

117.3 KB
Title: RB exhaust
Date: October 05, 2003
Description: Fits unbelievably well! Flange from DP to presilencer could be moved 5"-6" forward to line up with factory donuts.
144.7 KB
Title: RB exhaust
Date: October 05, 2003
Description: Minor tweeking required...
11.7 KB
Title: oops again!?
Description: Miata torque mount interferes with the Watts Link. :-(
226.1 KB
Title: Fun with power tools...
Date: October 20, 2003
Description: Remove ~2 pounds of un-needed Miata mount for clearance.

123.7 KB
Title: Look Ma, no hands... ;-)
Description: No jacks or jackstands. Engine and trans are bolted in with trans. mount spacer blocks.
115.5 KB
Title: Big Hole
Date: October 28, 2003
Description: Nice clean hole with conduit knock-out punch...
101.5 KB
Title: Big Hole inside
Date: October 28, 2003
Description: Factory TII harness comes through behind heater fan housing.
177.8 KB
Title: Driver's side
Description: Just a few more wires to hook up. ;-)

179.1 KB
Title: ECU
Description: Mounted in passenger footwell.
159.8 KB
Title: Fuel Pump
Date: November 08, 2003
Description: Bosch 61975 fuel pump. Custom mount. Outlet; 5/16" banjo fitting scavenged from SE fuel filter. Inlet; 15mm! AN-10 (5/8") fits.
149.4 KB
Title: Fuel Pump & filter
Date: November 13, 2003
Description: Pump is attached to the floor by spare tire...
15.4 KB
Title: Custon Driveline
Date: December 05, 2003
Description: Uses standard replaceable Spicer U-joints

128.4 KB
Title: more mods...
Date: January 08, 2004
Description: Large Miata pinion flange doesn't clear tunnel when suspension is bottomed out. Modify right side here with 5# hammer... ;-)
133.4 KB
Title: IC prototype
Date: April 29, 2004
Description: box is thicker than 3"...
98.9 KB
Title: IC prototype
Date: April 29, 2004
90.9 KB
Title: IC prototype
Date: April 29, 2004
Description: box is thicker than 3"...

165.0 KB
Title: Custom IC
Date: May 25, 2004
Description: design by BackYard Engineering ;-)
178.0 KB
Title: Test fit
Date: May 27, 2004
Description: Custom IC, A/C condenser, 3 row radiator. 12A fan shroud doesn't clear TII fan.
64.2 KB
Title: TB adapter
Description: 2.5" inlet, TII throttle body adapter found on ebay.
49.9 KB
Title: TB adapter
Description: 2.5" inlet, TII throttle body adapter found on ebay.

171.4 KB
Title: IC pipe
Date: June 19, 2004
Description: PVC prototype. Doesn't require battery relocation.
Photos continued at: http://Rx7-GSL-TII.us/gallery/TIIswap

I am using [used] factory parts where possible The parts & P/N are listed below.
From 1st gen. SE

Oil Pan - N304-10-700
Oil pickup
Front Cover - N304-10-A60
Fuel lines
Fuel tank
Front crossmember

From '91 TII (matches my engine)

ECU & harness
Fuel filter & mount
engine bay fuse block
misc. relays

From Mazda Motorsports

COMPETITION ENGINE MOUNT - 4352-39-040 (2ea)
COMPETITION TRANSMISSION MOUNT - 4352-39-340
BRAIDED STAINLESS OIL COOLER HOSE KIT - 0000-01-7601 (only for oil coolers attached below radiator)

From Racing Beat

Al Flywheel - #11448
6 puck disc - #12523
Pressure Plate - #12620
Oil baffle plate - #11824
80mm downpipe - #16425D
80mm presilencer - #16425P (for off road use ;-)

Other parts

Bosch 61975 fuel pump
CSF 3 row radiator, radiator.com, $134.
Custom intercooler.
Modifed Fan Shroud.

Mazdatrix; 86-92 Front Cover "O"-Ring notes

More information on projects like this can be found in the Yahoo! group, turbofb.

Back to Rx-7 page.

Jul 13, 2004

148.3 KB Title: spaghetti Date: June 20, 2003 Description: Should I cut the red wire or the green wire? ;-)	76.2 KB Title: SE front cover Date: July 11, 2003	94.8 KB Title: OMPs (MOP) Date: July 11, 2003 Description: '89-'91 Electric OMP and SE	98.0 KB Date: August 26, 2003 Description: Electric OMP with SE housing
88.3 KB Title: Mod'd SE front cover Date: September 24, 2003 Description: Turbo Oil drain and SE OMP installled	109.5 KB Title: Oops! Date: September 25, 2003 Description: '89-'91 H2O pump housing interference	114.2 KB Title: more oops! Date: September 25, 2003 Description: '89-'91 H2O pump housing interference	126.6 KB Title: oops 3 Date: September 25, 2003 Description: Not even close... :-(
131.0 KB Title: Check it. Date: September 26, 2003 Description: Apply packing tape and machinist's blue	150.3 KB Title: Trim this Date: September 26, 2003 Description: grind areas with blue marking	78.5 KB Title: Scott's picture Description: Thanks to Scott Lelievre for the help on the H2O pump housing problem. His notes are here.	120.8 KB Title: Modified TII trans Description: Tail housing changed to maintain transmission mount and shifter location.
61.8 KB Title: This should be easy... ;-) Date: September 28, 2003 Description: There is only a few major parts and a handful or miscelaneous parts needed...	92.5 KB Title: SE tank Date: September 29, 2003 Description: Where do you find 12 mm hose?? At a European Service shop...	106.2 KB Title: Crossmembers Date: October 01, 2003 Description: SE compared to 12A crossmember. Note difference in engine mount holes.	142.9 KB Title: Clean up Date: October 01, 2003
147.6 KB Title: Say ahh... Date: October 01, 2003 Description: All cleaned up and ready for an engine.	158.1 KB Title: It's in!! Date: October 03, 2003 Description: The easy part is done. Now comes the time consuming part. The ECU...	108.2 KB Title: Prototyping Date: October 05, 2003 Description: My Frankinstein transmission has an unknown tail housing. It looks like a TII, but has a mounting point similar to a 1st gen. The guy that built it for a friend of mine, drilled new holes in the trans. mount to fit it to the bottom of the transmission. The result in my chassis is the mounting point is 1" too low. I need to have some Al blocks made to replace my wood prototypes...	99.3 KB Title: RB exhaust Date: October 05, 2003 Description: Racing Beat 80mm downpipe & presilencer
117.3 KB Title: RB exhaust Date: October 05, 2003 Description: Fits unbelievably well! Flange from DP to presilencer could be moved 5"-6" forward to line up with factory donuts.	144.7 KB Title: RB exhaust Date: October 05, 2003 Description: Minor tweeking required...	11.7 KB Title: oops again!? Description: Miata torque mount interferes with the Watts Link. :-(	226.1 KB Title: Fun with power tools... Date: October 20, 2003 Description: Remove ~2 pounds of un-needed Miata mount for clearance.
123.7 KB Title: Look Ma, no hands... ;-) Description: No jacks or jackstands. Engine and trans are bolted in with trans. mount spacer blocks.	115.5 KB Title: Big Hole Date: October 28, 2003 Description: Nice clean hole with conduit knock-out punch...	101.5 KB Title: Big Hole inside Date: October 28, 2003 Description: Factory TII harness comes through behind heater fan housing.	177.8 KB Title: Driver's side Description: Just a few more wires to hook up. ;-)
179.1 KB Title: ECU Description: Mounted in passenger footwell.	159.8 KB Title: Fuel Pump Date: November 08, 2003 Description: Bosch 61975 fuel pump. Custom mount. Outlet; 5/16" banjo fitting scavenged from SE fuel filter. Inlet; 15mm! AN-10 (5/8") fits.	149.4 KB Title: Fuel Pump & filter Date: November 13, 2003 Description: Pump is attached to the floor by spare tire...	15.4 KB Title: Custon Driveline Date: December 05, 2003 Description: Uses standard replaceable Spicer U-joints
128.4 KB Title: more mods... Date: January 08, 2004 Description: Large Miata pinion flange doesn't clear tunnel when suspension is bottomed out. Modify right side here with 5# hammer... ;-)	133.4 KB Title: IC prototype Date: April 29, 2004 Description: box is thicker than 3"...	98.9 KB Title: IC prototype Date: April 29, 2004	90.9 KB Title: IC prototype Date: April 29, 2004 Description: box is thicker than 3"...
165.0 KB Title: Custom IC Date: May 25, 2004 Description: design by BackYard Engineering ;-)	178.0 KB Title: Test fit Date: May 27, 2004 Description: Custom IC, A/C condenser, 3 row radiator. 12A fan shroud doesn't clear TII fan.	64.2 KB Title: TB adapter Description: 2.5" inlet, TII throttle body adapter found on ebay.	49.9 KB Title: TB adapter Description: 2.5" inlet, TII throttle body adapter found on ebay.
171.4 KB Title: IC pipe Date: June 19, 2004 Description: PVC prototype. Doesn't require battery relocation.	Photos continued at: http://Rx7-GSL-TII.us/gallery/TIIswap