Part numbers

Bay Window Bus

Part # Stamped part # Engine serial # Gear pitch Application
021 109 015 M N/A CA, CB -3 1.7 l engine, manual transmission
021 109 017 M N/A CA, CB -2 1.7 l engine, manual transmission
021 109 019 M N/A CA, CB -1 1.7 l engine, manual transmission
021 109 021 M N/A CA, CB 0 1.7 l engine, manual transmission
021 109 023 M N/A CA, CB +1 1.7 l engine, manual transmission
021 109 025 M N/A CA, CB +2 1.7 l engine, manual transmission
021 109 027 M N/A CA, CB +3 1.7 l engine, manual transmission
021 109 021 J 021.101J or
021.109.101J		 N/A 0 N/A
021 109 017 L N/A CE 000 001» CE 004 500
AP 000 001» AP 055 000
CJ 000 001»
CJ 038 155»
GD 000 001» GD 055 800		 -2 1.7 engine (auto trans.), 1.8 and 2.0 l engines, manual and auto transmission
021 109 021 L N/A CE 000 001» CE 004 500
AP 000 001» AP 055 000
CJ 000 001»
CJ 038 155»
GD 000 001» GD 055 800		 0 1.7 engine (auto trans.), 1.8 and 2.0 l engines, manual and auto transmission
022 109 021 A 022.109.101A GE 000 001» 0 2.0 l engine, manual and auto transmission, hydraulic lifters

Aircooled Vanagon

Part # Stamped part # Engine serial # Gear pitch Notes
071 109 015 N/A CU, CV -3 2.0 l engine, manual and auto transmission, hydraulic lifters
071 109 017 N/A CU, CV -2 2.0 l engine, manual and auto transmission, hydraulic lifters
071 109 019 N/A CU, CV -1 2.0 l engine, manual and auto transmission, hydraulic lifters
071 109 021 N/A CU, CV 0 2.0 l engine, manual and auto transmission, hydraulic lifters
071 109 023 N/A CU, CV 1 2.0 l engine, manual and auto transmission, hydraulic lifters
071 109 025 N/A CU, CV 2 2.0 l engine, manual and auto transmission, hydraulic lifters

Specs

From VW

Lifter type Intake opens (BTDC) Intake closes (ABDC) Exhaust opens (BBDC) Exhaust closes (ATDC) Engine code Application
Mechanical 2° 35° 35° 6° CE, AP, CJ, GD, GE 1.7 engine (auto trans.), 1.8 and 2.0 l engines, manual and auto transmission
Hydraulic 2° 35° 35° 6° CE, AP, CJ, GD, GE 1.7 engine (auto trans.), 1.8 and 2.0 l engines, manual and auto transmission

These were the most common bus camshaft timings. There were at least three other bus camshaft timing configurations:

Lifter type Intake opens (BTDC) Intake closes (ABDC) Exhaust opens (BBDC) Exhaust closes (ATDC) Engine code Application
Mech. 12° 42° 43° 4° CA 1.7 l engine, manual transmission
Mech. 9° 41° 43° 4° CA, after Aug. '72 1.7 l engine, manual transmission
Hydr. 2° 33° 36° 3° BTDC CU, CV Vanagon 2.0 l engine
Spec Intake (mech.) Exhaust (mech.) Intake (hydr.) Exhaust (hydr.)
Valve lift N/A N/A N/A N/A
Advertised duration N/A N/A N/A N/A
Duration @ 0.040" (1 mm) 217° 221° 217° (215°) (213°)
Lobe center N/A N/A N/A N/A

information_source Valve timing measured at 1 mm (0.040") of valve lift for CE, AP, CJ, GD, GE engine codes.

From Webcam (aftermarket)

Lifter type Intake opens (BTDC) Intake closes (ABDC) Exhaust opens (BBDC) Exhaust closes (ATDC) Engine code Application
Mechanical -3° 33° 31° -5° N/A N/A
Hydraulic -12° 24° 25.5° -10.5° N/A N/A

information_source Valve timing is checked with zero valve lash at 0.050" (1.27 mm) of valve lift.

Spec Intake (mech.) Exhaust (mech.) Intake (hydr.) Exhaust (hydr.)
Valve lift 8.36 mm (0.329") 7.92 mm (0.312") 8.36 mm (0.329") 7.92 mm (0.312")
Advertised duration 223° 229° 223° 229°
Duration @ 0.050" (1.27 mm) 192° 195° 192° 195°
Lobe center 108° 108° 108° 108°

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Misc

Here is what I found in factory literature:

021 109 015 M — CA engine — pitch -3
021 109 017 M — CA engine — pitch -2
021 109 019 M — CA engine — pitch -1
021 109 021 M — CA engine — pitch +/-0
021 109 023 M — CA engine — pitch +1
021 109 025 M — CA engine — pitch +2
021 109 027 M — CA engine — pitch +3

022 109 017 A — GE engine — pitch +/-0 (hydro, no rings)

071 109 015…025 — (CU?) CV engine — (Vanagon, hydro)

021 109 021 J — 1700 auto, 1800 engine — pitch -2 (two rings, one left and one right)

021 109 017 L — CE, AP, CJ, GD engine — pitch -2 (+/-0?)

021 109 101 F — Z engine (VW 411 1700cc) + W, EA, EB, EC, AN, GA, GB (Porsche 914) »» ONE single ring

-

Removed the camshafts out of two GE engines (1977 and 1978). The numbers on the camshafts are the same, namely: 022 109 101 A The numbers on the gears are also the same, namely: 021 109 111 C

But after the VW sign on the gear, there is a difference:

1977 (pitch -3): 9H
1978 (pitch -2): 4H

-

the [Webcam] 372 is hydraulic, close if not identical to a GD / GE bus cam, and has an advertised split duration of 223 I / 229 E . Lobe center is 108 degrees. It will be a 70 HP cam with about the same torque as the 142.

The 142 is solid lifter, the same as the 95 HP GA 2L motor, with an advertised split duration of 247 I / 242 E . Lobe center is 108 degrees. The GA motor used a compression ratio of 7.6:1 which is slight part of the HP gain over the bus 7.3:1. In Europe the GB motor used 8.0:1 and had 5 more HP or 100 HP with the same cam.

Further reference