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Datsun A-series engines use tubular steel pushrods. Oil does not travel through the pushrods, but are oiled from above by the Rocker arms.
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Length
It is important to use the correct length for proper Rocker geometry. If the cylinder head is skimmed beyond the service limit, or the block deck is cut down, custom push rods are needed.
* 141.5 mm: A10 * 152 mm: short-deck engines (A12, A12A, and 1980 A13) * ~167 mm: tall-deck engines (A14, A15, and 1974 A13)
Rocker geometry | uneven valve adjusters
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Part Numbers
* 13238-H1001 ROD-push A12, A12A also 1980-1982 A13
Tall-block engines use a different length: * 13238-H6201 ROD-push A14, A15
Datrats - Custom pushrods made to length from VW pushrods and using the A-series cup. They sit the turned down cup shaft on a ledge in the alloy. Custom made to your length and cheap.
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Lightweight Pushrods
Tomei brand:
Unknown brand:
Aluminum
150mm length (standard A12 push rods are 152mm)
Titan from Bprojects * Titan: 32.2g * Stock: 40.0g * Pitroad Aluminum: 32.5g
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Roller Rocker Pushrods
- Many local speed shops can make custom pushrods
- Yella Terra sold their pushrod tooling to "Head Stud Developments" in Melbourne
- Crow Cams also provide pushrods to customer order, approx. 6.650-6.600 inches long (for A14/A15 subject to your needs) 0.080 wall thickness, Chrome Moly
- Iskenderian Part# 1235L+.50. - custom pushrods for roller rockers (small block Chevy, +0.050 inch length), 8mm (5/16") ball ends
- Isky also sells an adjustable pushrod ("universal" pushrod kit for Chevy smallblock)
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