85 merc 18xd

shimano

Petty Officer 2nd Class
Joined
Jul 26, 2008
Messages
143
Just aquired a 18xd.I already have a 90 15 2 stroke.This 18 is a brute of a motor for 3 more hp.Seem's to be in pretty good shape .Are these a good motor,Things I should watch.Thnaks.
 

canoemang

Petty Officer 1st Class
Joined
Apr 9, 2011
Messages
350
Re: 85 merc 18xd

I had one a few years back (same year Shortshaft)and it was solid little motor, I sold it with my old boat 3 years ago to a buddy and it is still running strong.

Depending on condition change the impeller and the plugs to make sure you know it was done.
 

shimano

Petty Officer 2nd Class
Joined
Jul 26, 2008
Messages
143
Re: 85 merc 18xd

Definitely looks heavy duty,The leg in twice as large(girth) as my 1990 15 2 stroke.And alot heavier,be interesting to see the speed diff on my 14 ft.it has a 6month old bill for a tune up and impeller,But I will keep a eye on it.
 

canoemang

Petty Officer 1st Class
Joined
Apr 9, 2011
Messages
350
Re: 85 merc 18xd

Come to think of it.. i had a buddy with a same year Merc 20 hp on a similar 14' tin.. I kept up with him dead even, he was not impressed :)
 

lncoop

Vice Admiral
Joined
Apr 18, 2010
Messages
5,147
Re: 85 merc 18xd

I had one on a fourteen foot Duracraft. It weighed about twelve thousand pounds, but it was tough as nails and it would make that fourteen footer go go go.
 

shimano

Petty Officer 2nd Class
Joined
Jul 26, 2008
Messages
143
Re: 85 merc 18xd

Mine also is a 14 ,It says rated for a twenty.Can'y wait for spring too test her out.
 

Faztbullet

Supreme Mariner
Joined
Mar 2, 2008
Messages
15,938
Re: 85 merc 18xd

Great lil motor but keep it cool as its a chrome bore block and will scuff and seize if overheated or lugged....
 

M9.9

Petty Officer 2nd Class
Joined
Dec 4, 2011
Messages
155
Re: 85 merc 18xd

Hi all,
Almost bought one (but 83) in November then declined after making an offer as major trouble finding non-std parts locally and it was a std 83 18. Hope I missed some gold-mine somewhere that has all the parts you'll need for your xd.
 

lncoop

Vice Admiral
Joined
Apr 18, 2010
Messages
5,147
Re: 85 merc 18xd

Hi all,
Almost bought one (but 83) in November then declined after making an offer as major trouble finding non-std parts locally and it was a std 83 18. Hope I missed some gold-mine somewhere that has all the parts you'll need for your xd.

Definitely a concern for a motor of that age, but I had pretty good luck getting parts for mine. I did once run across a part that had been rendered obsolete, but my local Merc dealer hooked me up with a shop that got it to me within a few days.
 

canoemang

Petty Officer 1st Class
Joined
Apr 9, 2011
Messages
350
Re: 85 merc 18xd

I was able to find what i needed for mine via the Internet.
 

Utik

Recruit
Joined
Jun 27, 2007
Messages
4
Re: 85 merc 18xd

I had an 84 version of this motor that I ran for huge hours on a Lund S-14. It was a great combo. I never even put plugs in it. All I ever did was occasional impellers and gearcase seals. It finally wore out the splines on the driveshaft and in the crankshaft.
 
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