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[Datsun 1200 encyclopedia]

FU Engine

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Category: Engine Mechanical

Revision as of 07:47, 17 June 2009
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Revision as of 00:37, 20 July 2009
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* 1978 USA compression ratio: 9.0 (4.08 mm dish) * 1978 USA compression ratio: 9.0 (4.08 mm dish)
-[http://datsun1200.com/modules/myalbum/photo.php?lid=19797 http://datsun1200.com/uploads/thumbs/19797.jpg]+[http://datsun1200.com/modules/myalbum/photo.php?lid=19797 http://datsun1200.com/uploads/thumbs/19797.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=18153 http://datsun1200.com/uploads/thumbs/18153.jpg]
NOTE: All 1978 Canada models used this engine, even non-FU Canada cars. NOTE: All 1978 Canada models used this engine, even non-FU Canada cars.
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* 1977 FU engine used 1978-style electronic ignition * 1977 FU engine used 1978-style electronic ignition
- 
= 1979-1980 = = 1979-1980 =

Revision as of 00:37, 20 July 2009

The FU engine came on the "GFU", "FU" and "MPG" cars (USA-market B210 and B310 fuel economy champion models). F means Five-speed. G means GX trim (not dual carb). U means USA (FEDERAL, except California). They got up to 50 mpg (21 km/liter).

1661.jpg
1977 B-210 50 MPG (US gallon = 3.78 liter)

Contents

B210

The FU model was a B210 Coupe fitted with A14 engine and 63a Five-speed transmission. The 5-speed was introduced to USA models from 1976-1/2, and to Canada models for 1977. 65 HP A14 with round ports.

5-speed models were only available in Coupe body style. All 5-speed models were fitted with FU engine. So for America, 5-speed was for fuel-economy, not performance option.

16470.jpg
1977 B-210 Plus

  • KHLB210FU: FEDERAL 5-speed
  • KHLB210FUV: CALIFORNIA 5-speed
  • KHLB210FUN: CANADA 5-speed [1978]

B310

A14 or A15 with 60-series five speed transmission. Available in all body styles: 2-dr, 4-dr, Coupe and Wagon.

  • 0278-0780 HLB310FU 4-dr sedan, DX, A14
  • 0278-0780 HLB310RFU 2-dr sedan, DX, A14
  • 0278-1179 KHLB310FU Coupe, DX, A14
  • 0278-1179 WHL310FU Wagon, DX, A14
  • 1279-0780 PLB310RSFU 2-dr sedan, Standard, A15
  • 1279-0780 KHLB310FU Coupe, DX, A15
  • 1279-0780 WPLB310FU Wagon, DX, A15
  • 0880- PLB310FU 4-dr, DX, A15
  • 0880- PLB310RFU 2-dr, DX, A15
  • 0880- HLB310RSFU 2-dr, STD, A14
  • 0880- KHLB310FU Coupe, DX, A14
  • 0880- WHLB310FU Wagon, DX, A14


12225.jpg
65HP - Economy A14 Engine. This engine got 47 MPG in the B310 with 5-speed transmission.

1976-1978

B210 engine was A14. Standard A14 was 80 HP, but FU engine was 65 HP. Round ports contributed to superior low-rpm operation.

19795.jpg

  • Round ports, low with swirl (non-shrouded)
  • Closed chamber (previously open chamber)
  • Passive air induction (non-FU has air pump)
  • 1977 compression ratio: 8.5 (5.37 mm dish)
  • 1978 USA compression ratio: 9.0 (4.08 mm dish)

19797.jpg 18153.jpg

NOTE: All 1978 Canada models used this engine, even non-FU Canada cars.


  • 1977 FU engine used 1978-style electronic ignition

1979-1980

1979 FU engine was A14. In 1980 either A14 or A15 was fitted. Curiously, the A12A engine was not used in the fuel-economy models.

Cylinder head features:

  • quench wedge chambers
  • round 28mm (?) lowered ports
  • Has round intake ports (like the A12 head). It has two small coolant holes below the intake ports, to provide heat for the intake manifold.


1981-1982

All 1981-1982 US models, including A12A, A14 and A15 used the same head design. So the FU models for 1981-1982 did not have a special engine. All engines these years were high-efficiency.


19796.jpg

  • quench head
  • smaller dish in piston
  • 35 mm intake valve (previously 37 mm)
  • shrouded intake valves
  • change from round ports to Small Oval
  • Standard Datsun 1200 style cooling fan (not the larger typical A14 style)