617 fuel/lift pump not delivering enough fuel

[Blaxmith]

(617 fuel/lift pump not delivering enough fuel click for update)

Good morning friends,

So i am finished up putting together my build - '80 240d manual w a 617.951.

On the first test drive it was definitely not accelerating correctly, and was gutless in general. Figured it wasnt getting enough fuel.

My friend who is helping me out suggested putting in a different fuel pump to see the difference. He put on his spare 4psi Holley Mighty Mite (he uses on his '61 220s to help start it up if the carbs' gas evaporated over a couple days) and unplugged the stock one. There was an immediate and drastic improvement.

So now I know my fuel pump is funky, i have a couple options.

a) take the fuel pump off, put on my spare fuel pump that i pulled off a different 617 (the engine had ****ed up bearings and a big rod knock but i saved the IP). I'm curious if its a simple bolt on procedure or if there are things i need to be careful of? I guess I'd need a new gasket. Anything else?

B) use an electric pump. My friend has another spare pump he pulled from his old '88 6 series. I dont know much about this pump but im looking for information currently. Anyone know if its a decent pump for the job?

C) repair my current pump? No idea

If not which electric pump would be best for the 617?


Thanks fir the insight guys, cheers!

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