1971 240Z V12
Car: 1971Datsun 240 Z #HLS 3022229
Owner/ Builder: Glenn
Mississauga ON d0td0td0t@hotmail.com
Engine: Aluminum block and heads Jaguar V12
Weight: 600 lb
Bore: 3.543 Stroke2.756
CID: 326.1 or 5.3L
Valves: intake 1.625 exhaust 1.360
Compression: 11:1
Power: 380+ horses.
Cam: Isky XM-2 -.404 lift- 258 duration- set straight up at 0*
Induction: Modified TPI, equal length runners with ram trumpets
Fuel Injection: Programmable Accell DFI
Headers: stainless 3 into 2 into 1. These consist of twelve 1½”X36” equal length primaries into
four 2”X18” equal length secondary pipes into a pair of 2 ½” exit pipes
Bell housing: Stainless, home engineered, with machining farmed out to people with bigger machines.
Fly Wheel: LT1 type with ballast removed, machined flat on the back side, Jaguar ring gear plate behind
Drivetrain: Aluminum Borg Warner T56
Weight 135 lb
1st 2.66:1
2nd 1.78:1
3rd 1.30:1
4th 1.00:1
5th 0.74:1
6th 0.50:1
Drive shaft: aluminum / shortened Ford Aerostar.
Differential: aluminum ’80 corvette. Ratio 4.11:1
Chassis Modifications:
Glass fiber body. Steel roof
Full 2”X2” frame
Weight: 3000 lbs.
Front: Stock struts with cut Pinto springs, ’92 Camaro rotors and modified calipers.
Sway bar: ’78 Granada 1”
Rear: Shortened Corvette from caliper to caliper
Sway bar: ’69 New Yorker ¾”
Acceleration: standing ¼ mile 13.78 at St Thomas June 2000
Car History:
1971 February. Datsun builds the blue 240 Z
1985 Bought ’71 240Z.
1986 Fit in a 318 Dodge motor and automatic.
1987 Refit with 318 and four speed.
Purchase a complete glass fiber body and install it.
1989 Install a “80 Corvette rear end. Late in the year got the car on the road.
1991 Refit motor with a 340 Dodge from a friend with a burnt out boat.
1992 Refit intake with 2X4 BBL AFB carbs.
1993 Repaint
1994 Drive car.
1995 Add wire wheels and Pirelli tires.
1996 Repaint.
1997 Pick up 454 for the Z. Trade for 427 damaged. Rebuild 427.
Discovered the GM part number game.
Good friends talked me out of the big block idea. Sold the motor by its part numbers only for the money.
Joined a Z car club. Seems OK.
Good events. Decent people. Not uptight purists. Love to drive their cars.
1998 Check out a cheap V12 downtown. Seized. Took a tape measure. Recorded dimensions.
Purchase two running V12s and a T56 six speed. Build bell housing. Mate motor and transmission.
1999 Sell 340 2X4 and four speed. Purchase used DFI system.
Begin installation of V12.
Completed early September, the night before the Misissauga Nissan car show.
2000 Completion of a dream. Run the ¼ at St. Thomas.
2003 Install Griffith Northstar radiator. Modified for duel top inlets. Rad cap hole sealed.
Add Volvo 2 speed fan.
The V12 story as told by
Roger Bywater of AJ6 engineering
Links
Recommended reading:
Fuel Injection by Jeff Hartman. Motorbooks international.
Power Secrets by Smokey Yunick. ISBN S-A Design
Clutch and Flywheel Handbook by Tom Moore. HP Books