EL 1.6L ENGINE

From G1 Prelude

The EL 1.6l engine was manufactured by Honda Motor Company between 1979-1983 for the 1st generation Honda Accord and 1st generation Honda Prelude. It is part of the E-series of Honda engines. Introduced new for the 1979 model year, it replaced the standard EF. It was a water cooled, SOHC 8-Valve CVCC engine with a displacement of 1.6L (1602CC). Output varied as the engine went through two updates during it's production. The EL 1.6l engine was standard in Canada, Europe and Australian Markets. Transmission choices were an automatic 2spd/3spd or manual 5 speed.

The EL series is an interference engine!

There are three variations of this cylinder head, depending on the year Honda it was offered in.

Minor engine issues are known to occur, especially the cylinder head warping, causing a blown head gasket. The immense heat generated from the combined exhaust/intake setup could not exchange fast enough to the iron block, resulting in warpage. Honda tired to remedy this with an updated cylinder revision to help dissipate the heat, which lowered temps dramatically.

Overview

  • Displacement 1.6 L (1,602 cc)
  • Inline four cylinder, transverse
  • Cast iron block & aluminum silicon alloy cylinder head
  • Redline limit - 79-80 Models 5,800 RPM, 81-82 Models 6,000 RPM
  • Two barrel Keihin Carburetor w/ manual choke
  • Electronic Ignition
  • Belt driven timing gear
  • Liquid Cooled - Thermostat controlled fan
  • Electric Fuel Pump
  • Oil Cooler (or provision on the block)
  • HF-3 = Automatic / HF-5 = Manual

Engine Block

Cast iron block with integrated water pump insert and large oil passages. Three versions exist (689, PB2 PC1) with additional manufacturing refinements and accessory bolt holes. Blocks are identical for both manual and auto trans per there version. They essentially the same as the EK 1.8l blocks, but with minor changes.

Specs

  • 77mm bore x 86mm stroke (3.031 in × 3.386 in)


(676-1) 1979 - 1980 Non-CVCC Cylinder Head

Eight port cylinder head (4 intake ports / 4 exhaust ports) for 1979-1980 models.

  • CDM/EDM EL-1000001~ Prelude (1979)
  • CDM/EDM EL-1200001~ Prelude (1980)
  • CDM/EDM EL-1300001~ Prelude (1981)

Specs

  • 8:4:1 Compression
  • 73.5 HP @ 5000 RPM
  • 90 ft lb Torque @ 3000 RPM
  • Redline @ 5800 RPM
  • Intake valve diameter (34mm), Exhaust valve diameter (28mm).

Engine Weight w/ Trans

  • 5spd -
  • Auto -

676-1 Cam Profile

Three camshaft profiles were used on the manual/auto for these years.

  • EL-1000001~ CAM# 14110-676-640
  • EL-1200001~ CAM# 14110-676-641
    • AUX IN CAM HEIGHT -
    • MAIN IN CAM HEIGHT -
    • MAIN EX CAM HEIGHT -
  • EL-1300001~ 5SPD CAM# 14110-676-600
    • AUX IN CAM HEIGHT -
    • MAIN IN CAM HEIGHT -
    • MAIN EX CAM HEIGHT -
  • EL-1300001~ HMT CAM# 14110-676-740
    • AUX IN CAM HEIGHT -
    • MAIN IN CAM HEIGHT -
    • MAIN EX CAM HEIGHT -

Notes

(676-2) 1981 Non-CVCC Cylinder Head

Eight port cylinder head (4 intake ports / 4 exhaust ports) for 1981 models. Same as 676-1 but with 1mm larger intake valves (35mm).

  • CDM/EDM EL-1300001~ Prelude (1981)

Specs

  • 8:4:1 Compression
  • 75 HP @ 5000 RPM
  • 90 ft lb Torque @ 3500 RPM
  • Redline @ 6000 RPM
  • Intake valve diameter (35mm), Exhaust valve diameter (28mm).

Engine Weight w/ Trans

  • 5spd -
  • Auto -

676-2 Cam Profile

Three camshaft profiles were used on the manual/auto for these years.

  • EL-1300001~ 5SPD CAM# 14110-676-600
    • AUX IN CAM HEIGHT -
    • MAIN IN CAM HEIGHT -
    • MAIN EX CAM HEIGHT -
  • EL-1300001~ HMT CAM# 14110-676-740
    • AUX IN CAM HEIGHT -
    • MAIN IN CAM HEIGHT -
    • MAIN EX CAM HEIGHT -

Notes

  • Casting variations show HF "A" or "B" on front, most likely representing it was for an automatic or manual setup.

(PC3) 1982 - 1983 Non-CVCC Cylinder Head

Eight port cylinder head (4 intake ports / 4 exhaust ports) for 82-83 Honda models. Intake valve diameter increased by 1mm (35mm), Exhaust valve diameter increased by 2mm (30mm).

  • CDM/EDM EL-1400001~ Prelude (1982)

Specs

  • 8:8:1 Compression
  • 80 HP @ 5000 RPM
  • 93 ft lb Torque @ 3500 RPM
  • Redline @ 6000 RPM
  • Intake valve diameter (36mm), Exhaust valve diameter (30mm).

Engine Weight w/ Trans

  • 5spd -
  • Auto -

PC3 Cam Profile

  • EL-1400001~ 5SPD & HMT CAM# 12251-PC1-000
    • AUX IN CAM HEIGHT -
    • MAIN IN CAM HEIGHT -
    • MAIN EX CAM HEIGHT -

Notes

  • Depending on location, this cylinder head may be casted with HF "C" on the front. The spark plug numbers are casted directly under the valve cover, where the previous heads were casted above the spark plug holes. Cam gear is of a solid metal type design, versus the older start shaped.