Mercruiser repower to diesel advice req!

W

Welsh Rob

Seaman Apprentice
Joined
Jul 10, 2005
Messages
39
Hi,<br />I have been offered a 120hp mercruiser 1.7 diesel engine at an attractive price!<br /><br />My 21 ft cabin fisher currently has a 3.0ltr 135hp mercruiser yr 2000 fitted with an alpha drive.............<br /><br />Therefore could anyone please advise me on the following questions....<br /><br />Will the 1.7 drop sraight in?<br />Will the wiring harness be suitable?<br />Fuel tank and guages compatible?<br />Difference in performance i can expect (at mo cruises at 20mph at 3200rpm and max at 36 mph at 4600rpm?<br /><br />Any help advise very welcome<br /><br />Thanks in advance<br />Rob (UK) :confused:
 
Q

qystan

Petty Officer 1st Class
Joined
Apr 26, 2004
Messages
291
Re: Mercruiser repower to diesel advice req!

I have a friend who fitted the same to a 23ft Searay. Seem to be able to run quite well.<br /><br />Original engine was a 4.3 Merc. Dropped right in with plenty of room between the pulley and fuel tank. <br /><br />Don't have the 3.0 dimensions, try comparing that to the 4.3, if the length is similar, you won't have probelsm with the diesel fitting.<br /><br />Fuel tank guage won't be a problem, its independent of the engine. <br /><br /><br />Wire harness is new. The tacho will be new, petrol and diesel engine tachos are different. Oil and temp will be new but I suspect they are the same sensor. In my friend's case, the new guages were swapped into the old guages. Speedo works the same.<br /><br />If you are getting the engine second-hand, make sure you get the harness and guages.
 
You must log in or register to reply here.
Top