Priming oil in a mod engine
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Priming oil in a mod engine
Most people here wont need this type of info, yet I always like to share things that I have found to be helpful.
Ever since the mod engines came out with the oil pump driven on the crank, its been harder to prime a new engine, and get the lifters to pump up. All pushrod engines usually are driven by a shaft off the cam gear. You could easlily prime the engine by having a longer shaft and a drill. Mod engines oil pump only pump when the crank is turning. While all builders use engine assembly lube that keeps the bearings and such lubed enough for a dry start, the lifters on these engines are not pumped up. This causes the followers(rocker arms) to hit their pedestal and "kick off"
My grandfather back in the 50's made a reservoir that was driven off an air compressor. You would fill it with oil and pump the engine up. I got to thinking about that design and came up with this idea...
I went to home depot and purchased a bug sprayer pump, $8, and a couple compression fittings.
Put oil in it and pumped it up until the saftey release valve was hissing, and started to pump in the oil. About 3 seconds later the lifters were popping and hissing squirting oil. It worked!
Here is a pic of the oil coming out the lifters, past the followers.
Ever since the mod engines came out with the oil pump driven on the crank, its been harder to prime a new engine, and get the lifters to pump up. All pushrod engines usually are driven by a shaft off the cam gear. You could easlily prime the engine by having a longer shaft and a drill. Mod engines oil pump only pump when the crank is turning. While all builders use engine assembly lube that keeps the bearings and such lubed enough for a dry start, the lifters on these engines are not pumped up. This causes the followers(rocker arms) to hit their pedestal and "kick off"
My grandfather back in the 50's made a reservoir that was driven off an air compressor. You would fill it with oil and pump the engine up. I got to thinking about that design and came up with this idea...
I went to home depot and purchased a bug sprayer pump, $8, and a couple compression fittings.
Put oil in it and pumped it up until the saftey release valve was hissing, and started to pump in the oil. About 3 seconds later the lifters were popping and hissing squirting oil. It worked!
Here is a pic of the oil coming out the lifters, past the followers.
TT_05_Stang- Admin
- Number of posts : 5329
Age : 48
Location : Arnold, MD
Registration date : 2007-12-07
Re: Priming oil in a mod engine
Uh oh. Somebody's beast of an engine is back together and primed for action...
Woot woot!
Woot woot!
05RedDevil- SUPER SNAKE
- Number of posts : 1390
Age : 37
Location : Baltimore
Registration date : 2008-03-05
Re: Priming oil in a mod engine
Heading over tomorrow?
TT_05_Stang- Admin
- Number of posts : 5329
Age : 48
Location : Arnold, MD
Registration date : 2007-12-07
Re: Priming oil in a mod engine
Hell yeah. I love you too much. I wouldn't miss it for the world
05RedDevil- SUPER SNAKE
- Number of posts : 1390
Age : 37
Location : Baltimore
Registration date : 2008-03-05
Re: Priming oil in a mod engine
Sweet, I cant wait to see this beast. Have heard so much about it but never seen it. Keep up the good work Will
Droptop306- SUPER SNAKE
- Number of posts : 1143
Age : 50
Location : Pasadena
Registration date : 2008-03-11
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