‘79 Mercury 115 Fuel Inlet Cover

[Trav454]

I am having an issue finding this part # (35-91078A 1) The original has several stress cracks and leaks fuel when primed.

Has anyone ran across this same issue and maybe found a work around?

Are there modern day mechanical fuel pumps that would work on these old inlines?

Thank you all for your time.

 

[emoney]

Might make it easier for folks if you showed a picture of the item with a description. Part numbers are helpful to some, but probably not most responses the quickest anyway.

 

[Trav454]

Yes sir that makes sense. The attached photo shows the complete fuel pump and the housing I’m talking about is the round cap with the Phillips screw on top. This cap has several stress cracks along the edge.

I have found the part at NLA marine but $60 is a little steep. I was hoping maybe someone else has found a work around for this or maybe come up with something that works in its place.

 

[racerone]

Your location ?

 

[Trav454]

Southwest Arkansas

 

[jheron]

I patched one with JB weld once to get back on the water.
Good luck!
Jon

 

[Chris1956]

A salvage yard comes to mind. Other than that, you might be able to fabricate one.

Maybe steal one of wifey's plastic measuring cups or maybe a coffee measure, and install a brass hose fittiing in it's side, and a hole in the top.

The other choice is to drill and thread the hole that allows the fuel into the pump. However, I am working from memory and have no idea it that will work.

I always thought that piece was a flaw in design, FWIW

 

[Trav454]

Hi Chris and thanks for replying.

Looks like I will be trying to fab something up as you suggested. Might try the JB weld also. Definitely agree about the design flaw.

Do you know if this fuel pump design was the same throughout the later inline years?

Would other year fuel pumps interchange?

 

[jheron]

There were a couple different types, AFAIK they should all be interchangeable.
Cheers,
Jon

 

[Chris1956]

There were dual triangle-shaped fuel pumps that mounted to the transfer covers. You would need new transfer covers, and the round robin of hoses between them and the carb intakes are hard to find. They were originally rubber hoses crimped to brass fittings which screwed into the fuel pumps. I am not sure if you coulod make the hoses up with clamps and brass hose fittings, but it is likely.

Not sure if there were other kinds on IL6s, until the more modern square pump. I believe that pump mounts to the block and has a single pulse line. You need two pulse lines.

If you could find a fuel pump (OMC comes to mind), that is powered by two hoses, like yours is, that may work. Check maxrules for some choices. I would expect anything for an OMC V4 would work.