How often do you change the valves on a Nissan 1200 Club?
The valves should be adjusted every 6 months or 6,000 miles as per the Nissan factory maintenance schedule. If you are setting the tappet adjustment you should be able to put the timing mark at TDC and adjust four of the tappets then rotate the crank once back to TDC and adjust the other four.
Where is the tappet located in an overhead valve engine?
However, a tappet (also known as a cam follower or lifter) is a small cylindrical mechanism which is attached to the end of the pushrod(in overhead valve engines) or the rocker arm (in overhead cam engines).
What should I do if my tappety engine is not working?
If these changes make no difference to the tappet noises, a full tappet adjustment should be the next move. Using a feeler gauge to wedge between a rocker arm and the valve stem, a factory setting can be found through a workshop manual to adjust the valve adjustment screw to the correct clearance.
Where is the locking screw on a tappet engine?
A locking screw is located at the connection to the rocker arm which can increase or decrease the amount of lift that the tappet allows from the camshaft, thus making the amount of valve lift adjustable through this method.
What kind of valve seat does Nissan A14 use?
A special aluminum bronze valve seat is used on the intake valve, while an iron sintered alloy is used on the exhaust valve. These parts are hot press-fitted. An air injection hole is provided in each exhaust gas port.
When did the Nissan A14 engine come out?
The engine was manufactured by Nissan Motor Company from 1975 through 2008. The A14 engine is the most common A-series engine available in the USA, although in some other markets it is relatively rare due to continued use of A12 engines through 1994.
However, a tappet (also known as a cam follower or lifter) is a small cylindrical mechanism which is attached to the end of the pushrod(in overhead valve engines) or the rocker arm (in overhead cam engines).
What kind of compression ratio does Nissan A14 have?
Compression ratio rating was 8.5:1. The A14 was produced in various ratings from 50 HP (37 kW) to 92 HP (68 kW). In some markets, the engine was available with Hitachi Twin Carb, this version was called A14T. The A14E engine with Electronic Port Fuel Injection system was offered in Asian markets.