What motor is this?

Tthomp3 · Apr 12, 2012

Im trying to figure out what motor i have in my 89 well craft. Its an 89 model v6 with an alfa 1 drive but i can't seem to match up the numbers on the motor to any mercruiser serial numbers.

picklenjim · Apr 12, 2012

Re: What motor is this?

Gm 4.3
What numbers are you looking at on the block? That engine should have the mercruiser numbers on a sticker on the inner side of the valve cover. Starboard side by the carburator below the purple wire in your picture.

Bondo · Apr 13, 2012

Re: What motor is this?

picklenjim said:
Gm 4.3
What numbers are you looking at on the block? That engine should have the mercruiser numbers on a sticker on the inner side of the valve cover. Starboard side by the carburator below the purple wire in your picture.

Ayuh,.... 'n there should be a little aluminum tag on the block, just above, 'n slightly forward of the starter....

Don S · Apr 13, 2012

Re: What motor is this?

.

picklenjim · Apr 13, 2012

Re: What motor is this?

Wasn't sure if that 4.3 had the metal tag.

Tthomp3 · Apr 13, 2012

Re: What motor is this?

I was looking at the numbers on top of the block where the carb mounts up to, not sure what the piece is called but it says 89 and has a bunch of numbers stamped on it

haulnazz15 · Apr 13, 2012

Re: What motor is this?

Well quit looking there and look in the locations that Don S gave you in the diagram.

Tthomp3 · Apr 13, 2012

Re: What motor is this?

Haha I'm about to go out to the boat, i will write them down and post them here so i can find out the exact model so i can find a service manual

Tthomp3 · Apr 13, 2012

Re: What motor is this?

the number on the tag is C872344. So would this make it an 89 4.3?

picklenjim · Apr 14, 2012

Re: What motor is this?

If it's a 2 barrel carb it's a 1988-1992 4.3L
If it's a 4 barrel carb it's a 1988-1992 4.3LX

achris · Apr 14, 2012

Re: What motor is this?

Tthomp3 said:
the number on the tag is 0C872344. So would this make it an 89 4.3?

That number is a '4.3L', 1990. It has a Mercarb 2bbl carb and thunderbolt IV ignition. It was rated as 175hp.

Chris.......

Tthomp3 · Apr 14, 2012

Re: What motor is this?

Sweet Thanks guys! Its got more power than i thought. The title says 155 hp but i didn't even think it had that much after looking at some of the specs on the internet. This takes all the guessing out, Thanks again guys! Could you convert it to a 4 barrel and get more power out of it?

Bondo · Apr 14, 2012

Re: What motor is this?

Could you convert it to a 4 barrel and get more power out of it?

Ayuh,... 'bout 25hp,.... Noticeable...

Tthomp3 · Apr 14, 2012

Re: What motor is this?

so would it be worth looking into finding someone parting out an old 4.3 with a 4 barrel and swap them or would it be easier to just buy a new one? are there any new ones that are acceptable for marine use from a different brand?

achris · Apr 14, 2012

Re: What motor is this?

Get an Eldebrock 1409 marine carb, and manifold to suit. Try www.summitracing.com

Intake -> http://www.summitracing.com/parts/EDL-2111/
Carb -> http://www.summitracing.com/parts/EDL-1409/

Tthomp3 · Apr 15, 2012

Re: What motor is this?

Ouch i didn't think that they would be that pricey and i didn't figure in the fact that i would need a new intake also. I think the stock setup will stay for now but when i go to replace my transom and pull the engine i think i will convert over. The 25 extra ponies would probably help me get on plane faster. i wish i could spend the money I'm going to spend on my stereo on the motor, but the cassette deck just has to go.

achris · Apr 15, 2012

Re: What motor is this?

Tthomp3 said:
Ouch i didn't think that they would be that pricey

Consider yourself lucky they are that CHEAP!. In Australia we pay over $700 just for that carb....

Tthomp3 said:
and i didn't figure in the fact that i would need a new intake also.

Unless you have a new way of putting a 4bbl carb on a 2bbl manifold hole....

Tthomp3 said:
I think the stock setup will stay for now but when i go to replace my transom and pull the engine i think i will convert over. The 25 extra ponies would probably help me get on plane faster.

If you're thinking of pulling skiers, just put a smaller pitch prop on...

Tthomp3 said:
i wish i could spend the money I'm going to spend on my stereo on the motor, but the cassette deck just has to go.

A decent MP3/CD player is less than half the price of that carb!

fishrdan · Apr 15, 2012

Re: What motor is this?

achris said:
Unless you have a new way of putting a 4bbl carb on a 2bbl manifold hole....

Here you go 4bbl carb to 2bbl manifold adapter, and it's only $17, a whole lot cheaper than a 4bbl manifold...

(just kidding, don't use that adapter thomp, it won't work,,, well...)

Bondo · Apr 15, 2012

Re: What motor is this?

(just kidding, don't use that adapter thomp, it won't work,,, well...)

Ayuh,.... Don't do that,... It's nowhere near the same as the Right manifold,... 'course, ya knew that....

rickryder · Apr 15, 2012

Re: What motor is this?

Now that you have gutted all the wet foam out you will get on plane faster.

What motor is this?

Petty Officer 1st Class

Chief Petty Officer

Moderator

Honorary Moderator Emeritus

Attachments

Chief Petty Officer

Petty Officer 1st Class

Captain

Petty Officer 1st Class

Petty Officer 1st Class

Chief Petty Officer

More fish than mountain goat

Petty Officer 1st Class

Moderator

Petty Officer 1st Class

More fish than mountain goat

Petty Officer 1st Class

More fish than mountain goat

Admiral

Moderator

Commander