Type 4 Cylinder Heads
This page was last updated Tuesday, September 15, 2009
| 1.7 Series | |||
| Part Number | Engine | Valve Sizes, intake x exhaust, mm | Notes |
|---|---|---|---|
| 021-101-371B | 1700 | 39.3 x 33 | Some had breather pipe or CHT sensor fitting for carb. vehicles; some also had EGR holes by intake ports. |
| 1700 | 39.3 x 33 | ||
| 1700 | 39.3 x 33 | ||
| 1700 | 39.3 x 33 | ||
| 1700 | 39.3 x 33 | ||
The 1.7 heads can be interchanged with 1.8/2.0 cylinders. It will be necessary to machine the opening to match the larger cylinder end.
| 1.8/2.0 Series | |||
| Engine | Valve Sizes, intake x exhaust, mm | Notes | |
|---|---|---|---|
| 1800 | 41 x 34 or 39.3 x 34 |
f.i. models had the smaller valve sizes; some had EGR holes; some had CHT sensor | |
| 1800 | 41 x 34 or 39.3 x 34 |
||
| 2000 | 37.5 x 33 | CHT sensor on one side; sodium filled exhaust valves | |
| 2000 | 37.5 x 33 | The "Vanagon" head; exhaust ports not compatible with earlier exhaust systems or most aftermarket exhausts. | |
| 2000 | 37.5 x 33 | ||
| 2000 | 42 x 36 | The highly desired 914 head; easily identified by 3-intake port studs; steeper spark plug angle. Generally believed to be the best starting point for highest HP. | |
If my research has missed a cylinder head, please email me with the information. Because of the different applications, two heads with the same part number may not be identical. Be sure to thoroughly inspect the heads for same valve sizes.
