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AlCorr

Rebuilding a Holly Black fuel pump.

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Has anyone rebuilt a Holly Black, (Blue or Red) fuel pump. Is it had to do, were to get parts, is it worth it. I was looking at a Big End Black, (I think that's what it's called) for $91 shipped to my door. Made by Holly, looks the same as a Holly Black with the same spec. Any advise?

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I did not know that those are rebuildable. What kind of fuel pressures are you seeing with this pump?

 

On a side note; I have rebuilt carbs and one or two different type pumps. Generally easy to do

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I see 19-20 psi at start-up, go's down to 17-18 psi around town, 14-16 psi on highway, it will drop as low as 10 psi under WOW or towing my trailer but only for a second or two.

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Thanks... that's not bad.... my raptor 100 will drop to around 14 when I get on it hauling heavy up a hill.

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if memory  serves, they had a  tiny  screen  on the input  side of the pump...  I'd  take it out  and  put in a  larger inline  screen (or two in parallel) Napa Gold  has  a  nice one #3270.

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if memory  serves, they had a  tiny  screen  on the input  side of the pump...  I'd  take it out  and  put in a  larger inline  screen (or two in parallel) Napa Gold  has  a  nice one #3270.

Interesting.....and if rebuildible that's great. I'd remove the screen and add a big w/s filter prior to this pump.

 

Does anyone know if they are lasting any length of time?

 

AlCorr, I don't see the big line kit in your sig..... perhaps pressures could be even better with the big line kit and draw straw.

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