D16A6 camshaft (in the D15B7 SOHC head)
into Civic EG (from Civic Si / CRX Si)

EF Civic Si / CRX Si 1988-1991
→
EG Civic EG 1992-1995

Yes: the D16A6 camshaft (in the D15B7 SOHC head) from the Civic Si / CRX Si (1988-1991) fits the Civic EG (1992-1995) — moderate difficulty, no modifications listed.

Verdict
Fits.
Verified entry · no modifications listed
Verified ✓
Difficulty
Moderate
Mods
None
Category
Engine

Installation notes

Yes — the D16A6 camshaft from a 1988–1991 Civic Si or CRX Si (EF/4th gen) fits the D15B7 head in a 1992–1995 Civic (EG; Australian GLi, US DX/LX) as a direct replacement, used with a D16Y7/D16Y8 cam gear or an adjustable cam gear to correct cam timing. An Australian owner fitted one to a 1993 Civic GLi sedan (EG8) as a budget upgrade to low-end torque. He noted that with the original 1988–1995 style cam gear the cam timing ends up about 4.75 degrees out because of the deck height difference between the D15B7 and the D16A6, which is why a D16Y8 cam gear or an adjustable gear is used. The job is a cam change with the head on the car: set the engine at TDC on the compression stroke, remove the valve cover, rocker assembly and distributor, slip the timing belt off the cam gear, swap the camshaft (coated with assembly lube) and gear, and refit everything with the timing marks lined up. A Civic-EG.com DIY on the same swap lists the D16A6 cam and a D16Y7 or D16Y8 cam gear as the parts and gives 16 lb-ft for the rocker assembly bolts. The OzHonda author reset valve lash to 0.005-0.006 in afterwards. Per Wikipedia, the D16A6 was also fitted to the 1988-1995 Civic Shuttle RT4WD in Australia, so it can be found locally.
Caution

Important caveats

  • Timing errors bend valves: the OzHonda author nearly bent valves doing this. Turn the engine over twice by hand at the crank and confirm all marks line up before starting it.
  • With the original 1988–1995 style cam gear the cam timing is roughly 4.75 degrees off; use a D16Y7/D16Y8 cam gear or an adjustable gear.
  • An adjustable aftermarket cam gear may rub the inner timing belt cover and make a loud tapping noise unless the cover is notched first.
  • Valve lash must be checked and set after the swap (0.005-0.006 in was used in the source).
  • Work slowly with the rocker assembly: parts are spring-loaded and can come apart as the shafts are removed. Loosen the bolts from the outside inwards and tighten them from the inside outwards.
  • Gains are modest and mostly in low-end torque; the OzHonda author suggests pairing it with intake and exhaust work.

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Reference

D16Y8 specs → D14A1 specs → EV specs → LEB-H5 specs → B18A1 specs → D15B7 specs → D16A6 specs → B18B1 specs → D16Y7 specs → D16A specs → D15B specs → D16Z6 specs → B18B2 specs → B18C2 specs → B18C7 specs → D15A3 specs → D16A8 specs → D16W4 specs → EA specs → EC specs → ED specs → EE specs → EF specs → EG specs → EL specs → EM specs → EN specs → EP specs → ER specs → ES specs → ET specs → P2J Cylinder Head → PM9 Cylinder Head → P08 Cylinder Head →

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Sources

3 refs
  1. 01 http://www.ozhonda.com/forum/showthread.php?133241
  2. 02 https://www.forum.civic-eg.com/viewtopic.php?p=357641
  3. 03 https://en.wikipedia.org/wiki/Honda_D_engine
Submitted by FitMyBuild research Added Updated

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