User Login    
 + Register
  • Main navigation
Login
Username:

Password:


Lost Password?

Register now!
Fast Search
Slow Search
Google Ad


[Datsun 1200 encyclopedia]

FU Engine

(Difference between revisions)

Datsun 1200 encyclopedia | Recent changes | Switch to MediaWiki mode

Printable version | Disclaimers | Privacy policy | Current revision
Category: Engine Mechanical

Revision as of 08:00, 3 December 2009
ddgonzal (Talk | contribs)

<- Previous diff
Revision as of 08:02, 3 December 2009
ddgonzal (Talk | contribs)

Next diff ->
Line 48: Line 48:
= 1977-1978 = = 1977-1978 =
-The ports were lowered for increase swirl, and quench-type combustion chamber was utilized.+The ports were lowered for increase swirl, and quench-type combustion chamber was utilized. These have quench chambers (not open chambers) but instead of being used in high-compression engines, they are designed for high swirl (for better fuel economy and improved emissions). They are used with dished pistons. Unlike the later H95 swirl-port heads, these have unobstructed ports. The ports are lowered so that the charge is forced to swirl as it enters the chamber.
[http://datsun1200.com/modules/myalbum/photo.php?lid=9058 http://ddgonzal.members.winisp.net/getThumb.aspx?width=400&uri=http://datsun1200.com/uploads/photos/9058.jpg] [http://datsun1200.com/modules/myalbum/photo.php?lid=9058 http://ddgonzal.members.winisp.net/getThumb.aspx?width=400&uri=http://datsun1200.com/uploads/photos/9058.jpg]
Line 57: Line 57:
* Static [[Ignition Timing]] of 5 degrees (versus the normal 10 degrees of non-FU models) * Static [[Ignition Timing]] of 5 degrees (versus the normal 10 degrees of non-FU models)
-[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]+[http://datsun1200.com/modules/myalbum/photo.php?lid=1233 http://datsun1200.com/uploads/thumbs/1233.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.

Revision as of 08:02, 3 December 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]

NOTE: When the FSM refers to the "FU models" apparently it is excluding Canada FUN vehicles.

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.

1976-1977

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
  • Open chamber
  • Passive air induction (non-FU has air pump)
  • 1977 compression ratio: 8.5 (5.37 mm dish)
  • 1977 FU engine used 1978-style electronic ignition

1977-1978

The ports were lowered for increase swirl, and quench-type combustion chamber was utilized. These have quench chambers (not open chambers) but instead of being used in high-compression engines, they are designed for high swirl (for better fuel economy and improved emissions). They are used with dished pistons. Unlike the later H95 swirl-port heads, these have unobstructed ports. The ports are lowered so that the charge is forced to swirl as it enters the chamber.

9058.jpg

  • Round ports, low with swirl (non-shrouded)
  • Closed chamber (previously open chamber)
  • 1978 USA compression ratio: 9.0 (4.08 mm dish)
  • Static Ignition Timing of 5 degrees (versus the normal 10 degrees of non-FU models)

1233.jpg 19797.jpg 18153.jpg

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


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 H95 head design. So the FU models for 1981-1982 did not have a special engine. All engines these years were high-efficiency. Small oval ports replaced the round ports of previous FU heads, and the large oval of previous A14/A15 standard heads.


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)

Spark Plugs

For 1978 and 1979, FU engines were fitted with NGK "Multi-gap" spark plugs with the larger gap of 1.3 mm (0.051 inch). The FU engine locates the spark plug closer to the center of the cylinder, which is superior to the regular head.

  • 22401-H7285

BRutMDQWkKGrHgoH-DUEjlLlw8DFBJikH95.jpg

DSC05375-1.jpg

20144.jpg

These plugs use a special distributor and static timing, but uses the same 12V coil as other Electronic Ignition models.