Engine i.d. Help

[lonemust]

I just bought this boat yesterday. I need help with the engine, it's a mercruiser s/n 2817884. What SIZE is this engine and is it a GM, FORD, etc..

 

[Bondo]

Re: Engine i.d. Help

Ayuh,... How 'bout a Picture or some other Hints....

Not all of Us have access to the serial # listings, unless You'd care to sift through the listings in the manuals...
Or you can just Wait,+ Hope 1 of the currently employed Merc. Techs might happen to find this post...

 

[lonemust]

Re: Engine i.d. Help

Will try to figure out how to upload pics after I take some. The boat is a Starcraft(1970 V-180 i/o) The engine is a 4 banger.

 

[Bondo]

Re: Engine i.d. Help

Will try to figure out how to upload pics after I take some. The boat is a Starcraft(1970 V-180 i/o) The engine is a 4 banger.

Ayuh,... Then My Guess is it's a Chevy, either the 2.5l, 120hp, or more likely the 3.0l, 140hp....

It don't have a Radiator cap on it does it,..??

 

[lonemust]

Re: Engine i.d. Help

NOPE no radiator cap

 

[Don S]

Re: Engine i.d. Help

Merc does keep records of SN's, however, they don't go back that far.
The only 4 cylinder engines back then were the GM 120 or 140 engine.
The 140's had a harmonic balancer on the front of the crankshaft and the 120 had only a pulley.
If you Click Here, you can download the OEM service manual for free. You need manual #1. There will be pictures and specs to help you determine which engine you have.

 

[Don S]

Re: Engine i.d. Help

It don't have a Radiator cap on it does it,..??

Good news is the 470's didn't come out till 76

 

[lonemust]

Re: Engine i.d. Help

Here are some pics to help out
View attachment 53279View attachment 53281View attachment 532
View attachment 53283View attachment 53284

 

[Don S]

Re: Engine i.d. Help

Pictures are too small to be of any help. You need to post a link to the full sized picture, not the thumbnails.

 

[Bondo]

Re: Engine i.d. Help

Ayuh,... It appears to be all original, the drive is an MC-1...
Your pictures are too small to see whether there's a harmonic balancer, or just a pulley on the front of the motor...
iboat's pictures posting guidelines are to size to 480x640...

 

[lonemust]

Re: Engine i.d. Help

Let's try this and see what happens. If this don't work go to my profile and look at my albums "Starcraft pics" http://forums.iboats.com/album.php?albumid=168

 

[bomar76]

Re: Engine i.d. Help

Quite a rat's nest of wires.....are those aligator clip jumper wires all over the place?

 

[lonemust]

Re: Engine i.d. Help

No just the 2 red ones their from the remote starter button. Was work on the tilt/trim unit. It will go down but won't come up. No fluid flowing on the up side. Is it o.k. to use an electric fuel pump on an inboard engine??

 

[lonemust]

Re: Engine i.d. Help

Well figured out I have a "140" 4-cylinder. My unit(boat) has an external voltage regulator. According to the manual only the 140 has this. Got it running earlier on muffs. First time it breathed fire in 10 years. Sounds better then my 75 horse Jonnyrude on the boat. Thanks for the help. HELP is always excepted with gratitude.