engine/trans id help

[yonu]

ok I need a bit oI am getting help I am trying to determine which trans bellhousing I have hung to my motor as I am getting ready to pulle the engine for maintenance/rebuild and I want to go ahead and order any wear items and change them while it is out I have a 73 fiberform san juan 24ft the motor is a 351w 4bbl. I can find no serial numbers on the engine or rather the plates are gone I have found none on the bellhousing. so i am not sure if it is a 888, 215, 233 or 255. Is there an easy way to id it before pulling

 

[84EdH]

Re: engine/trans id help

Hi yonu, I suggest you go to the adults only section of this forum under mercruiser information. there you will see a link on where to find your serial numbers on your engine and outdrive (not on the bell housing, it is on the side of the upper drive unit. on the sticker if there still is one, or stamped in the housing). there is also a link with pictures of the different drives to help identify. you can also post photos of your drive and it can be identified by users here on the forum.

how's that for easy?

 

[yonu]

Re: engine/trans id help

Ok I double checked there are no serial numbers on the engine the sterndrive is a alpha one gen one other than that I have no idea on the driveunit model mainly I need to know which clutch parts to order so I can replace those parts while I have the motor out or any other hard to get at wear parts. here are some pictures if they help

Hi yonu, I suggest you go to the adults only section of this forum under mercruiser information. there you will see a link on where to find your serial numbers on your engine and outdrive (not on the bell housing, it is on the side of the upper drive unit. on the sticker if there still is one, or stamped in the housing). there is also a link with pictures of the different drives to help identify. you can also post photos of your drive and it can be identified by users here on the forum.

how's that for easy?

 

[84EdH]

Re: engine/trans id help

sorry, what clutch parts? do you mean the clutch dogs in the lower unit?

 

[yonu]

Re: engine/trans id help

Based on the diagrams there should be a clutch and flex plate in the motor bellhousing on all the ford v8s but the 888 so I am trying to figure out if I should order clutch parts or not it even references it in the mercruiser service manual

 

[84EdH]

Re: engine/trans id help

not sure what manual you see a clutch in the bell housing, but all of the I/0s merc. used have the shifting taking place in gear movement in the lower unit. I can see from your engine photos, you have a standard shift plate set up, with shift cable etc. In the bell housing, attatched to crankshaft is a flywheel and a splined coupler that the outdrive shaft slides into. some newer couplers are built with a flex plate attached but not in 1973. OEM manuals are listed in adults only section also.

I can see your sticker on the port side of your outdrive upper gear housing. the serial number should be stamped in the aluminum housing, under the sticker........peel it off.

did you look at the top of the engine block between the bell housing and intake manifold for a metal plate with engine serial number?

 

[yonu]

Re: engine/trans id help

Ok the actually stern drive upper and lower is a alpha one gen one from that serial the problem is the Mount on the transom and the belhousing doesn't have any serial number or plate and the engine only has ford part numbers the intakes part number matches a 84 Econoline van

 

[84EdH]

Re: engine/trans id help

Well maybe you should start at the beginning. Ie. Why pull the engine? What problem is there? Also the drive parts dont depend on the engine other than the coupler. There should be marine carb, starter, alt. For spark/fuel vapor safety in a closed environment. Intake does not matter, except that you must be sure they havent plopped a car engine with carb starter etc from a car. Very dangerous if thats the case

For the drive you may need different maintenace items, but I would pull the drive first and see what u need

 

[84EdH]

Re: engine/trans id help

Same with engine, pull it (for rebuild....sorry I missed that) inspect, then get parts. You know what u need for rebuild a ford 351 just use marine freeze plugs and head gaskets. Block rebuild is otherwise same as car. Check the starter etc to ensure marine. This is a big project and you can get good help here, but do it piecemeal. When u are working on drive, read the maual for section you are working on. Check if any videos in adults only section covers subject. Then ask when u need help.

 

[yonu]

Re: engine/trans id help

Ok the stern drive is good other than I need to change the u joint bellow have done all other maintenance on it. The engine has all the proper marine parts on it. I am pulling the engine to see what is up it decided to act like it is seized as I can turn it about 1 in each way so I am pulling it to see what is up and if nessesary rebuild it.

 

[thumpar]

Re: engine/trans id help

not sure what manual you see a clutch in the bell housing, but all of the I/0s merc. used have the shifting taking place in gear movement in the lower unit. I can see from your engine photos, you have a standard shift plate set up, with shift cable etc. In the bell housing, attatched to crankshaft is a flywheel and a splined coupler that the outdrive shaft slides into. some newer couplers are built with a flex plate attached but not in 1973. OEM manuals are listed in adults only section also.

I can see your sticker on the port side of your outdrive upper gear housing. the serial number should be stamped in the aluminum housing, under the sticker........peel it off.

did you look at the top of the engine block between the bell housing and intake manifold for a metal plate with engine serial number?

They did make some with a transmission in the boat. The TR series was one. I am not sure if there are others. He may be looking at a 215 with TR drive manual. He obviously has an alpha so no transmission.

 

[84EdH]

Re: engine/trans id help

yonu, did you pull the drive yet? if not, its possible the drive is locked up, stopping the engine from turning. drive has to come off before pulling engine anyway. maybe you'll get lucky.

 

[Fishermark]

Re: engine/trans id help

The problem with working on an older boat like yours is the fact that things get changed out over the years. I mention that because if you do find a tag with a serial number it may not match what you have. For instance, your transom assembly is an older one - not sure which model, but is certainly "pre-alpha" (which I know doesn't help specifically), while the outdrive as you mention is a first gen Alpha.

On the engine, since again, the possibility exists that someone has swapped parts... be sure everything on it is marine rated. (All the misc fuel and ignition parts).

 

[Bondo]

Re: engine/trans id help

yonu, did you pull the drive yet? if not, its possible the drive is locked up, stopping the engine from turning. drive has to come off before pulling engine anyway. maybe you'll get lucky.

Ayuh,.... To go along with what Ed is tellin' ya,...

Yer transom assembly is probably from '73 like the hull, it Looks to be,...
So,...
You'll be lookin' for bellows, 'n parts for a '73 MC-1,...

 

[84EdH]

Re: engine/trans id help

well, I learned something new. TR= "transmission" model TRS="transmission sport" model. and connected to Merctrans or Borg-warner transmission.:facepalm: thanks thumpar

 

[Bt Doctur]

Re: engine/trans id help

you have neither, you need to pull the drive first, then the motor if it is indeed siezed
Are you sure its 351? what is the measurement between 2 of the intake bolts. 8 inches is the 302 motor with a 351 firing order.

 

[84EdH]

Re: engine/trans id help

Bt, I know his drive is not a TR drive, what I was saying was, that I didn't know Merc had even made transmission drives. Hence the :facepalm:

 

[yonu]

Re: engine/trans id help

thanks I havnt pulled the drive yet I am going to go pick it up and pull it home next week. could the drive be locked just trying to get my ducks in a row. you said the possiblility of the drive being locked-up if this was the case would the prop behave as in i can put it in neutral and spin it i can put it in forward and it locks in place and the same with reverse.

thanks,
yonu

 

[Bt Doctur]

Re: engine/trans id help

shifting is done in the lower unit, upper can still be seized

 

[yonu]

Re: engine/trans id help

ok wasn't sure will post back after i pull drive