Scott, the original line from the pump to the carbs was 1/4" od, as you
found.
The problem is, there was a special nut and gland used to connect the 1/4"
line into the 5/16" fitting on the fuel pump. AFAIK, these are NLA. If you
have your old nut, you can reuse it, but without the special gland, the nut
is too short and will bottom in the pump fitting before crushing a common
1/4" gland. Overtightening will just break the pump (don't ask how I know
this).
Unfortunately I don't know of a good solution to the problem, perhaps
someone else does.
Randall
> The line running from the pump to the front carb that I took off
> when dismantling the entire car is 1/4" OD. All other lines that
> were removed were 5/16" OD. The fitting on the shut off tap that
> runs to the fuel pump is 5/16th OD. The replacement line I got
> from Moss for the pump to the carb is 5/16th.
>
> Here is my question, if the line running to the front carb is
> 5/16" OD and the inlet pipe on the carb's fuel bowl is 1/4",
> how do you connect the flexible fuel line between the two
> when one end fits a 1/4" and the other is 5/16"? If I go
> with 1/4" line from the pump to the carb, will this negatively
> effect my pressure? My preference is to use 1/4" line since
> it fits better and is much easier to bend and to then use
> 5/16th line from the shut off valve back to the tank. Again,
> any issues with negatively effecting the pressure? What is
> correct?
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