4.3 Mariah Mercruiser Froze

[Anthony Duggan]

i had it stored. not by me. started it up it began puking white oil out at carb. found crack around oil filler tube area This is an 86 low hours how weldable would this be and who in muskoka ontario would do it?

 

[Don S]

Re: 4.3 Mariah Mercruiser Froze

started it up it began puking white oil out at carb. found crack around oil filler tube area

It's not weldable, you need an engine. You have internal cracks also.

 

[Bondo]

Re: 4.3 Mariah Mercruiser Froze

The Oil Fill is on the Valve Cover,.......

Regardless,.....

Don's Right,...... It's Not Weldable.......

At the Very Least,.... You need a Replacement Block,....
And, for the amount of Labor involved,...
A Replacement Engine will make Better Sense......

Just be sure to go back in with another engine of the Same Vintage......There have been Many Changes to the 4.3l over the years.....

 

[bobboater1]

Re: 4.3 Mariah Mercruiser Froze

i have an 89 350 sitting all rusty . got tired of looking at all the rust great floors and hull ..i just got a nice longblock cannot wait to put in..them 4.3 are nice engines. sounds to me they make perfect sense .. start searching for a new block..you brand of boats are nice i like them
bob

 

[Anthony Duggan]

Re: 4.3 Mariah Mercruiser Froze

thanks for the input was hoping to repair the block someone said a couple holes on the replacement block would be different any help wold send me in the right direction thanks

 

[Don S]

Re: 4.3 Mariah Mercruiser Froze

was hoping to repair the block

Sorry, but that's not going to happen.

someone said a couple holes on the replacement block would be different any help wold send me in the right direction thanks

You're going to have to give a lot more information to answer that.
What "Couple of Holes" would be different, What year blocks, both old and the new one? Is it the same block as you have now? Year etc.?

 

[Bondo]

Re: 4.3 Mariah Mercruiser Froze

thanks for the input was hoping to repair the block someone said a couple holes on the replacement block would be different any help wold send me in the right direction thanks

As Don has just said,........ Welding up the Cracks is NOT an Option,...... Period.........

And,.......
As I said before,.......
IF you match the Vintage of the old motor,........
The New Block WILL have All the Holes in the Right Places..........

 

[tashasdaddy]

Re: 4.3 Mariah Mercruiser Froze

listen to these guys, they will save you a lot of grief and $$$$. i know from experience.

 

[180shabah]

Re: 4.3 Mariah Mercruiser Froze

Ditto, replace it.

If you shop around you can find the pre-vortec 4.3's fairly innexpensive.