mercruiser D254 diesels

tamarind

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14 Dec 2004
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Has anyone had any experience of these merc D254 turbo AC engines about 1990, good bad or ugly? Any info would be aprieciated
 
A pair of these used to be fitted in my boat 220HP @ 3600 rpm, they were a bit sluggish in my boat and were upgraded to the same 4.2 L 6 cylinder VM engine but the 300 HP Cummins-Mercruiser version.

I am not aware of any issues with them but stand by for others input............


Certainly my new 300 hp versions are a pleasure to own.

When looking at them you will notice the coolant bottle is empty and should remain empty, it is for overflow only.

I have not needed any engine spares but service parts are readily available and you have a choice of
Mercruiser dealers
Cummins Dealers
Cummins-Mercruiser dealers

The last time I wanted an air filter I had the choice of three dealers at one Marina (Cobbs Quay poole), two could offer next day and one had in stock.
 
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