thinking about ditching the MPI

[scoflaw]

Recently smoked my MEFI-3 ECm. and also broke an injector Well come to find out, these things are quite rare, and the price tag reflects that.

So instead of shelling out 3k for rebuilt stuff, was thinking carb. Who has a manifold for a raw water cooled gen 6, rectangle port with brass inserts for a 502. ?

 

[achris]

In short, Are you insane?

Apart from the cost of getting all the MPI gear off, and the carb gear on, which would likely be more than repairing the MPI, you'll likely violate almost every pollution control law in your state. Get caught and you could face a custodial sentence.

Find a boat with the same engine that wasn't winterised properly and you have your parts. Or find a shop that repairs the ECUs. Plenty around....

Chris.......

 

[scoflaw]

Not sure what planet your from , but been googling all day and nobody but 1 guy repairs this MEFI-3 @ $1800 bucks.
Been all over the country with Ebay and Craigslist. Nope...No one seems to have a parts boat laying around with a 502 mefi-3.

Got any hot tips ? We have no Eco police so that is not a concern.

 

[Scott Danforth]

Tp answer your question, any BBC rectangular port short deck intake will fit any mark IV thru Gen 6 BBC short deck motors (from 396 cubes up to 572 cube)

 

[scoflaw]

Tp answer your question, any BBC rectangular port short deck intake will fit any mark IV thru Gen 6 BBC short deck motors (from 396 cubes up to 572 cube)

Understood.....Looking for 1 with brass inserts...does such a part exist ?

 

[Bt Doctur]

If the intake is cast, you done need brass ports

 

[Scott Danforth]

Yes, same intake as rectangular port 454s. Buddy Barr marine casts them for Mercruiser, Volvo, as well as PCM

they also cast them for Edelbrock and a few others

There is also Dart and Billy Mitchel (merlin) as well as world products

Use google, search for bbc rectangular port marine intake....thousands of listings show up

 

[scoflaw]

Raw salt water cooled. Would be nice to find this pie in the sky Acris talks about. I could buy this guys reconditioned ecm for 18 and it could crap out next year.

 

[Fun Times]

Total long shot but you may want to investigate the following linked company to see if maybe they have a repair site in house that may be able to help either by calling them or using their contact info at the top of the site.....http://www.technicalservicesin.com/index.php?page=ecm

There are other ways of locating aftermarket / lower cost fuel injectors that will match up to yours. Are there any "numbers" on your bad injector?

 

[Scott Danforth]

for what its worth, try contacting Arizona Speed & Marine. they do reprogramming of the MEFI-3's they can probably grab one off the shelf (new for under $1200) and dump in the stock mercruiser program. they probably have stock injectors as well.

 

[scoflaw]

Thanks for the tips, I'll call today. OBD diagnostics in Ca. is who I talked to yesterday. I've got an injector driver stuck on, so it's fouling #1,4,6 and 7. Says a repair is possible, with 60% success.

 

[kenny nunez]

Where are you located in the country? There is someone here in the New Orleans area that may be able to help also.

 

[scoflaw]

Where are you located in the country? There is someone here in the New Orleans area that may be able to help also.

Mass. It's going to get mailed so more concerned with price than location. Thanks

 

[kenny nunez]

Give Precision Marine a call 504 469 7463. Ask for Mark, he may be able to help.

 

[scoflaw]

Give Precision Marine a call 504 469 7463. Ask for Mark, he may be able to help.

He can program but can't fix. Thanks

 

[scoflaw]

for what its worth, try contacting Arizona Speed & Marine. they do reprogramming of the MEFI-3's they can probably grab one off the shelf (new for under $1200) and dump in the stock mercruiser program. they probably have stock injectors as well.

He has no Mefi-3's, but said he can modify my harness and sell me a new mefi-4 for $1600.
That's a better deal than a refurbed 3, thanks for the tip