What size bolts for attaching non vro fuel pump to engine block for pulse?

Yuge

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Joined
Apr 10, 2020
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3
Anyone able to tell me the bolt size for attaching the fuel pump to the block of a 93 40hp Johnson that I have removed the VRO pump off of? Any help would be appreciated big time. Thanks in advance.
 

racerone

Supreme Mariner
Joined
Dec 28, 2013
Messages
38,889
They are 10-24 thread.----Length would be pump + gasket + 5/16" or 3/8"
 

Yuge

Recruit
Joined
Apr 10, 2020
Messages
3
Racerone Thank you for your help. Pump is on and finally engine will both idle and rev. I just have to get it on the water and put a load on it and see if it will flow enough fuel for full throttle for more than a few seconds at a time like it has been with the VRO. This thing has been a pain. The joys of only being able to afford used, I suppose. Gonna get on the water tomorrow if the tornados stay away from E TN.
 
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