73 Elan 250SS

[spitty]

Hi guys picked up 73 elan 250ss but was missing carb, according to the specs I have found it should be a dual carb setup but the intake on this is for a single only, what I am unsure about is the routing of the fuel lines, this unit has 2 impulse lines and a return plus the suction fuel line, according to what I found the carb that I have should work, my carb only has 3 connection points(HR143A). Do I just tee off the the 2 impulse lines into 1 or does any one have a good photo of the proper set up that they could send me. Any help would be appreciated. Thanks spitty

[JDT]

Doo used a special carb adapter to mount two carbs on a single input manifold.

If your going to use only one carb than use only one impulse line. Either one will work just fine.
Remove the barb and install a plug in the unused one or simply cap it with a nipple.

I assume this is a twin cylinder 250 correct?

[spitty]

Hi yes it is the 250 twin, this unit has the single carb mount manifold, but has the 2 impulse lines which confused me if it only has one carb, I will plug the one impulse and try that. Sorry not familiar with the Elans, first 1 for me. Thanks Spitty

[JDT]

If you were to tie the two lines together it would not supply any pulse.
As one line goes pressure, the other goes vaccum and the two would cancel each other out.

Note that the correct carb may be an HRxxx but that is if you are running two of them.

You may be unhappy with the performance. The little 250 can really bark if you feed it enough.
A single HR will leave the engine hungry.

I would put on an HD.