FOURS AND SIXES

Classic Car Weekly (UK) - - Buying & Selling -

En­gines last 200,000 miles be­tween re­builds and parts are gen­er­ally plen­ti­ful be­cause some Land Rovers share some P4 units. All en­gines need fresh oil and a new fil­ter ev­ery 2000 miles to avoid pre­ma­ture camshaft wear. A good P4 en­gine should be al­most silent; clat­ter­ing means that the valve clear­ances are out, prob­a­bly be­cause the camshaft is tired. All P4 en­gines have an al­loy cylin­der head with valve seat in­serts, so they don’t need ad­di­tives in or­der to use un­leaded fuel. In fact, reg­u­lar ad­di­tive use clogs up the SU car­bu­ret­tors, re­sult­ing in an er­ratic mix­ture and poor run­ning.

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