Name this motor and model number!!

[Smokepole27]

Please I was given this motor with a 72 well build trihull with this 85 horsepower force motor and need to find out model and serial due to tag being to faded! Is their any other way to find out the serial and model or can someone tell me the model so I can know where to look for when I need parts?? All suggestions are appreciated.

Ryan

 

[roscoe]

Re: Name this motor and model number!!

1988 or1989

 

[Smokepole27]

Re: Name this motor and model number!!

Any guesses on model number and any ways to find out the serial? Also would anyone say if this is a good motor to have?? Easy to find parts etc?? Have many problems??

 

[roscoe]

Re: Name this motor and model number!!

Most parts are available from Mercury dealers, or online.
Not a particularly good motor unless you do you own maintenance and repairs.
Easy to work on, sometimes hard to diagnose ignition problems.
Never let it overheat.
Never forget the oil in the fuel mix.
Most repair shops won't work on it.
Of those that will, few know what they are doing.

Only place to get the numbers is on the id tag on the side of the transom mount, but also check inside the hood, under the carbs.

If you are going to work on it, get a factory repair manual, or a Clymer repair manual. Don't waste your time and money with a Seloc manual.

 

[john from md]

Re: Name this motor and model number!!

Look for a plate under the carbs. It will have the model and serial number of the engine. It looks like an '89 to me.

John

 

[Kevin58145]

Re: Name this motor and model number!!

I have a 85hp force too and cant get the numbers off the trasom mount, people have been telling my its best just a spare parts motor.... is that true? it runs really well but just recently i ran a compression check and im about 9 lbs less on the middle cylinder so is there a way to find parts with out the numbers?

 

[john from md]

Re: Name this motor and model number!!

Many of the normal wear parts are the same in the various models. For instance, many lowers, reeds, coils, flywheels can be swapped among not only in the same horse power range but between ranges as well.

One particular place that parts are different is in carbs. However, you can tell the difference between carb models visually.

You can check the part numbers from places like iboats, russel marine, boats.net etc. and compare the numbers across model lines.

As for your lowre compression, do a good decarb on the engine and then check it again. Instructions for decarbing an engine can be found on the stickys at the beginning of the forum.

Oh, buy a manual if you don't have one. Clymer is the better of the aftermarket versions.

Regards,

John

 

[Smokepole27]

Re: Name this motor and model number!!

Awsome thanks for the help. The last time the guy ran the boat was right before huricane katrina then a branch fe?ll on it and busted a hole through the hull so i have a nice little project on hands. Whats the mixture rate on the fuel for this motor? 50:1

 

[john from md]

Re: Name this motor and model number!!

50 to 1 it is.

There is a thread in the FAQ at the beginning of the Maintenance section of the iboats forums that is called Waking up a sleeping motor or something like that. It has some must do items for an engine that hasn't been maintained.

Hint, if you do the suggested items, you won't spend alot of time asking us how to fix the engine after it blew up.

Regards,

John

 

[Kevin58145]

Re: Name this motor and model number!!

can anyone point me in the direction of the decarbing sticky? or explain the process? Please!

 

[john from md]

Re: Name this motor and model number!!

Go to the FAQ in the beginning of the maintenance forums and start scrolling. It is on page two.

John

 

[Imgonefishing]

Re: Name this motor and model number!!

I am willing to bet a nickel that it is one of these

85 1988 1001 851X8A
85 1988 1001 853F8A
85 1988 1001 853F8B
85 1988 1001 853X8A
85 1988 126 853X8B
85 1988 1001 854C8B
85 1988 1001 854H8B
85 1988 1001 854S8A
85 1988 00X1217 856A8A
85 1988 00X1427 856A8B
85 1988 1001 856C8B
85 1988 1001 856F8A
85 1988 1001 856H8B
85 1988 1001 856I8B
85 1988 00X1086 856L8A
85 1988 00X1016 856L8B
85 1988 1001 856N8A
85 1988 1001 856N8B
85 1988 1001 856T8A
85 1988 1001 856T8B
85 1988 00X1643 856X8A
85 1988 00X1235 856X8B
85 1988 1001 856X8C
85 1988 00X1099 856Y8A
85 1988 00X1122 856Y8B
85 1988 1001 858C8A
85 1988 1001 858C8B
85 1988 1001 858D8A
85 1988 1001 858D8B
85 1988 00X1010 858F8A
85 1988 00X1067 858F8B
85 1988 1843 858F8C
85 1988 1001 858I8A
85 1988 1001 858I8B
85 1988 1001 858J8B
85 1988 1001 858M8A
85 1988 1001 858M8B
85 1988 1001 858N8A
85 1988 1001 858R8A
85 1988 1001 858S8A
85 1988 1001 858T8A
85 1988 1001 858V8A
85 1988 1001 858V8B
85 1988 1001 858X8B

They liked to experiment in those days it would seem. lol

On a side note and If one of You gurus knows for sure please correct me. While rebuilding my 88 125 when I pulled the rear leg cover off of it there was a great big 88 cast into the leg itself. That might be a way to narrow down the year on it.

 

[Smokepole27]

Re: Name this motor and model number!!

WOW thats alot of freaking models for that year! What are the chances that the impeller,fuel pump,carb kits etc would match up with all of those models? Where would be the best places to order them from and what would yalls advice be as for my project. Should I start with the motor or start restoring the boat, also a tree branch fell on it and put a hole in the hull maybe 4" by 4", the gel coat? Paint? on the bottom is still nice and shiny, after I refiberglass it how would I get the high gloss back in that area and would it be hard for it to blend?

 

[john from md]

Re: Name this motor and model number!!

The best thing I can tell you is to take a deep breath, relax and start to search the Forums. All of what you are going through has been covered countless times before. The information is there if you use the right search terms.

The only engine that will definitely have different parts is an "L" drive. Don't bother with any so named. If you look in your Clymer manual, it will show you the difference in the carb models. Parts are available for carbs, water pump, and fuel pump. The water pumps and fuel pumps should be the same on any 89 modlel you select. There is a guy on Ebay that sells the whole water pump housing, impeller, gaskets and bolts for about $70. Russelmarine, boats.net, iboats, mercruiser and others sell parts.

If after you do your research and find yourself hungup, then come back and tell us what you did so far and what the problem is and we can help you.

This forum works like a "hand up" not a "hand out".

Regards,

John

 

[Smokepole27]

Re: Name this motor and model number!!

Awsome! Thanks a bunch for all the help!