Torque
D15B ARCHIVEHead bolts — D15B (P08)
22 → 53 lb-ft
10× M10 12-point. Two steps, center-out spiral. Threads oiled.
D15B
SPEC BANK // D-SERIES
Type the part. Get the number.
Factory torque specs, capacities, and cross-compatibility across the D-series — the answer card, not the 47-page thread. Anything missing, ask us and we add it.
34 cards on the bench
Torque
ANSWERED BY USHead bolts — D16Z6 / D16Y8
22 → 53 lb-ft
Same two-step spiral as the D15B. Bolts are torque-to-yield — never reuse.
D16Z6D16Y8
Torque
ANSWERED BY USARP head studs (all D-series)
60 lb-ft
Three equal steps with ARP Ultra-Torque lube. Hand-thread into block first.
D15BD15B7D16Z6D16Y8
Torque
D15B ARCHIVEMain cap bolts
38 lb-ft (51 N·m)
10× M10 grade 10.9. Inner-out sequence, oiled threads.
D15BD15B7D16Z6
Torque
D15B ARCHIVERod cap bolts
23 lb-ft (31 N·m)
M8 grade 10.9 with oil. Check side play 0.006–0.012 in after torquing.
D15BD15B7D16Z6
Torque
D15B ARCHIVEFlywheel bolts
87 lb-ft (118 N·m)
6× M12 grade 12.9 + threadlocker. Star pattern, crank locked.
D15BD15B7D16Z6D16Y8
Torque
D15B ARCHIVECrank pulley bolt
134 lb-ft (181 N·m)
M14. Impact or a proper holder — never the timing belt.
D15BD16Z6D16Y8
Torque
D15B ARCHIVECam gear bolt
27 lb-ft (37 N·m)
M10 flanged. Cam held by the hex, not the gear.
D15BD16Z6
Torque
D15B ARCHIVERocker shaft bolts
13 lb-ft (18 N·m)
14× M8, center-out in two passes.
D15B (P08)
Torque
D15B ARCHIVECam cap bolts
8.7 lb-ft (12 N·m)
M8 — small wrench, no heroics.
D15BD16Z6
Torque
D15B ARCHIVEIntake manifold nuts
17 lb-ft (24 N·m)
7× M8 studs. Center-out, gasket dry.
D15BD16Z6D16Y8
Torque
D15B ARCHIVEExhaust manifold nuts
23 lb-ft (31 N·m)
9× M8 copper-locking nuts. Retorque hot after first heat cycle.
D15BD15B7D16Z6
Torque
D15B ARCHIVESpark plugs
13 lb-ft
NGK ZFR5F-11, gap 1.0–1.1 mm. Dry threads into a clean head.
all D-series
Torque
D15B ARCHIVEOil pan bolts
8.7 lb-ft (12 N·m)
14× M6, criss-cross. Drain plug: 29 lb-ft with a fresh crush washer.
D15BD15B7D16Z6
Torque
D15B ARCHIVETiming tensioner bolt
33 lb-ft (44 N·m)
M10. Set tension with the spring, then lock.
D15BD16Z6
Capacity
D15B ARCHIVEEngine oil with filter
3.3 L (3.5 qt)
5W-30 (10W-30 in hot climates), API SG or later.
D15BD15B7D16Z6D16Y8
Capacity
ANSWERED BY USCoolant — full system
≈ 4.5 L
50/50 ethylene glycol. Burp with the heater on full until no bubbles.
EG Civic
Capacity
ANSWERED BY USManual transmission (S20/S40)
1.9 L (2.0 qt)
Honda MTF. Fill until it weeps from the level hole.
EG Civic
Capacity
ANSWERED BY USValve lash — intake (cold)
0.007–0.009 in
0.18–0.22 mm. Feeler drags lightly at spec.
D15BD16Z6D16Y8
Capacity
ANSWERED BY USValve lash — exhaust (cold)
0.009–0.011 in
0.23–0.27 mm. Loose valves tick, tight valves burn.
D15BD16Z6D16Y8
Capacity
ANSWERED BY USRing end gap — stock
0.008–0.014 in
Top ring, squared in the bore. Add ~0.004 in per 50 hp for boost.
D15BD15B7
Capacity
ANSWERED BY USRod/main oil clearance
0.001–0.002 in
Plastigage range. Over 0.003 in — measure everything again.
D15BD15B7D16Z6
Compatibility
ANSWERED BY USD16Y8 intake manifold on D16Z6
Direct bolt-on
Same flange and ports. Move the IACV and TB over; Y8 has no FITV. Popular cold-side upgrade.
D16Z6D16Y8
Compatibility
ANSWERED BY USD16Z6 head on D15B7 block (Mini-Me)
Bolts on
Needs P28 ECU + VTEC wiring (A4 solenoid, D6 pressure switch). Use the Z6 head gasket, belt and water pump.
D15B7D16Z6
Compatibility
ANSWERED BY USD16Y8 head on D15B7 block
Bolts on
Mini-Me variant. Y8 head flows best of the SOHC castings; keep the Y8 cam and ECU logic (P2P) or chip a P28.
D15B7D16Y8
Compatibility
ANSWERED BY USP28 ECU requirements
5-speed OBD1 Civic/EG
Auto P28s exist — avoid. Socket it for a basemap later. No knock board on P28.
OBD1 SOHC VTEC
Compatibility
ANSWERED BY USZ6 cam in Y8 head (and reverse)
Interchangeable
Same journal sizes and gear bolt. Degree it after the swap — marks alone assume stock stacking.
D16Z6D16Y8
Compatibility
D15B ARCHIVED15B (P08) parts interchange
Mostly Z6-shared
P08 head ≈ Z6 architecture; cams/valvetrain swap. Distributor and sensors differ — match by plug, not by hope.
D15BD16Z6
Compatibility
ANSWERED BY USD-series transmissions
All interchange
Any cable-hydro D trans bolts to any D block. S40 (EX/Si) has the shorter final drive — the one you want.
D15BD15B7D16Z6D16Y8
Electrical
D15B ARCHIVEVTEC solenoid coil
14–30 Ω
GRN/YEL wire to ECU pin A4. Below 14 Ω — replace the solenoid.
D15BD16Z6D16Y8
Electrical
D15B ARCHIVEVTEC oil pressure switch
Continuity to D6
BLU wire at the spool valve. Code 22 = no pressure confirmation — check oil level first.
D15BD16Z6
Electrical
ANSWERED BY USECT sensor (cold reference)
≈ 2–3 kΩ at 20°C
A lazy ECT leans the whole mixture. Ask the 2008366 car how we know.
D-series
Electrical
D15B ARCHIVEBase ignition timing
16° BTDC
SCS 2-pin jumper in, fans off, marks centered in the window.
D15BD16Z6
Electrical
ANSWERED BY USStock injector impedance
12 Ω saturated
Stock 240cc. DSM 450cc are low-impedance — needs a resistor box delete or peak-hold driver.
D15BD16Z6