Breather Tubes

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Category: Engine Mechanical

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The Engine block is ventilated by a tube on the left side, and by a vent in the rocker cover. The PCV valve connects to one, and the air cleaner to the other. With a tubular header (extractor) you may need to use a different style than stock for your engine.

Contents 1 Overview 2 Styles 3 Removal & Installation 4 Part Numbers

Overview

The engine block is ventilated (the inside air is refreshed) by air entering the rocker cover, and exiting through the breather mesh, and out through the breather tube to the PCV system. The A12GX Engine reversed this flow.

 Also see: Suction Pipe for the cooling system inlet pipe

Nissan calls this the "Connector Pipe".

Breather mesh inside block (see Engine block#Ventilation)

Styles

None - A10 from Datsun 1000
Album 17129

Straight - stock Datsun 1200 (including GX)
Album click to view Album 2636

Straight EVAPO (has small auxilary)
Album click to view Album 23561

One Up
Album click to view Album 2546 Album 13706

Two Up -
Album click to view

Up with tab -
Album click to view

Up with Tab & hose bracket

Short curved-up - E10 Cherry

Curved -
Album click to view Album 8359

Up-curved
Album click to view Album 10858 Album 17776

Up-curved with bracket for Flow Guide Valve

Long right-angle
Album click to view

Custom
Album click to view

Removal & Installation

The pipe is a press fit into the block. Put vice-grips on it and tap the vice-grips until the pipe comes out.

Tap the new pipe into place. It is a taper fit, and needs no sealant.

Album 23561

Part Numbers

B110
11830-H1001 CONNECTOR-PIPE A12 CRANK [Straight]
11830-H1900 CONNECTOR-PIPE A12 EVAPO [Straight plus small connector]
11830-H1901 CONNECTOR-PIPE A12 EVAPO 0570- 0 11830-H1900 

B120 JDM
11830-H1901 7510-7907
11830-G2561 7908-8910 [small top port]
11830-95w00 8910-

B210 1974-1975 JDM
11830-H1901 A12S
11830-H5700 A12T

B210 1976-1977 JDM
11830-H1001 A12S.V
11830-H6200 A14S.V
11830-H7200 A12S-V+A14S-V
11830-M2460 CONNECTOR-PIPE A14T [short right-angle]

B310 JDM
11830-G2560 V 7910-8010
11830-G2561 V 8011-8109
11830-G2561 A12S+A14S 8110-
11830-H1901 A12S.V -7909
11830-H6200 A14S.V -7909
11830-H6210 A14S.V -7909
11830-H7200 A12S.S,K+A14-V -8010
11830-H7200 A13,A15 8011-
11830-H7210 A14S.S,K+AT -8010
11830-H7210 A15S 8011-

A10 JDM
11830-H6200 A14S.V -7906
11830-H6210 A14S.V -7906
11830-G2561 A14S.V 7907-
11830-H7200 A14S.S,K
11830-H7210 A14S.S,K

E10 JDM [curved-up]
11830-M0800 PIPE-connector A12/A12T 1973
11830-M0801 PIPE-connector A10/A12S/A12T 1974

C22/TC22/GC22 JDM
11830-G5100 A12/A15

C120 JDM
11830-G2560 7906-8006 A12+A14.(V,T)
11830-G2561 8006-8106 A12+A14
            8106-8209 A12+A15.(V,T)
11830-G3600 8209-     A12+A15.(V,T,WV)
11830-H1901 7810-7907 A12
11830-H6200 7810-7906 A14.T
11830-H7200 7810-8006 A14.K
            8006-     A15.K 

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