I've relaced the fuel line and fuel pump on my '85 GS project, and I'm trying to decide the best way to connect the pipe that runs from the pump to the carb. Is it ok to connect the pipe directly to the pump, or do I need to use a hose between the pipe and the pump in order to let things move a little? If I use a hose, it will be fairly short and I'm having trouble getting everything situated such that the hose wouldn't have to make much of a turn.

Thanks,
Rich

 

So you wanna connect the metal line straight to the fuel pump?

 

Correct..put an adapter in the pump, put a sleeve and nut on the pipe, flare it, and connect to the pump.

Rich

 

Yep, there's no reason that wouldn't work.

 

OK...thanks. I have an idea I want to try next time I get a chance to work on it, but I might just connect the pipe straight to the pump then.

Rich

 

i'd go with the the short piece of hose

 

well i would recommend the hose ... but this all depends on how you go on about attaching the metal line to the pump ... it will need to be something that can be taken off later just incase the pump or line go bad ... and not to mention the obvious one, fuel leakage.

 

Here's how I ended up doing it.

Rich

 

OMG, thats brilliant! And cutting the hole in the floor for the pump to stay upright... genius.

Good choice of pump too. Comp 70 or 110?

Jon

 

Thanks Jon - it's a 110. I chose the Mallory on your advice a few months ago! And I put in a Mallory 140 fuel filter on the back side of the storage bin. I had to take the mounting bracket off and bend it to an angle larger than 90 degrees to allow it to hang vertically. It was hard to get a decent picture of that.

Rich

 

Looks really good. Nice job

 

good clean job !!!!

 

me like .. turned out alot better than what i though it would ... just make sure oyu have enough silicon on the bottom edges you don't want any water getting up there and rusting anything.

 

Thanks dj55b. I've been trying to figure out what I can use to seal it off. I'm trying to find a think piece of rubber (firm, but not too firm) that I can attach to the pump body just below the bracket, so that when the pump is tightened down into the hole, the rubber is compressed against the floor, covering the opening.

Rich

 

I used a Comp pump (back when I had a carburetor), and I have the following to say on them:
1) Good pump -- quiet and reliable.
2) It must be installed with the motor up, which you have done.
3) It can be installed upright without cutting through the floorpan if you mount it along the inboard frame rail, just aft of where you have it now.
4) Resist the temptation to overtighten the two screws at the bottom of the pump that hold the gerotor cover on. If you overtighten them, the pump will either be too noisy or will seize. If this does happen, you only have to loosen the screws a little and the problem is solved.
5) If you're running Weber carburetors, there's an LP or "low pressure" version that will make a pressure regulator unnecessary.

 

Thanks for the info! Now I have a question. I noticed AFTER I had taken the pump apart that the directions say to pay attention to the way the gerotor is installed and to not install it reversed. Well, I have no idea how it was installed. Is there a way to determine the right way to install it?

Thanks,
Rich