Thread: About to fire up a BBC for break-in, any tips?

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Originally Posted by tango

2 TO 3 MIN Is long enough to prime your engine . Have some one look at the oil pressuse gauge when you are priming it . it sould go up to were the pump is set 60psi or more . Then it is ready to start .

2 to 3 min ??
You won't even get oil at half of the roller rocker arms in two to three min.

Maybe on a BB Chevy its different . But on my SB thats all it takes . Make sure you use a 1/2 drill . How ever long it take till the oil come up to the rockers . I also pump up the lifters with oil before installing them . .

Originally Posted by tango

Maybe on a BB Chevy its different . But on my SB thats all it takes . Make sure you use a 1/2 drill . How ever long it take till the oil come up to the rockers . I also pump up the lifters with oil before installing them . .

You should never pump up the lifters before you install them.
By doing this the act almost like a solid lifter.

When you run your drill for 20min what do you think happens to the lifters ? And how will the rockers see oil if the lifters stay dry ?

Originally Posted by tango

When you run your drill for 20min what do you think happens to the lifters ? And how will the rockers see oil if the lifters stay dry ?

I will say this again.
NEVER,NEVER TRY AND PUMP UP YOUR LIFTERS.
It's fine if you want to argue your point but I don't want other people on this forum betting bad information.
On page 278 of the Comp. cams catalog it say's in the very last paragraph.
"It is UNDESIRABLE to do as the lifters "pump up" lifters will cause the valves to open during the adjustment process,rather than positioning the valve lifter plunger in its operating position as it is supposed to do".
If you have questions at Comp cam their number is 1-800-999-0853.
On page 444 of Crane cams book it says.
"Many people mistakenly believe that hydraulic lifters must be soaked in oil overnight and be hand pumped up with a pushrod before installing into a new engine,however this is not necessary.
In fact,this could cause the lifter to act as a "solid" and prevent obtaining proper pre-load".
If you have questions call Crane cams at 904-258-6167.
Sometimes it is better to sit back and try to learn a thing or two on this forum.

Thnkas for the explanation Erik. I made the mistaske of pumping my lifters on my first small block build when I was 18..lucky for me nothing catastrophic happened. Always appretiate detailed explantions. Many on here listn and appretiate it.

Originally Posted by erik erikson

I will say this again.
NEVER,NEVER TRY AND PUMP UP YOUR LIFTERS.
It's fine if you want to argue your point but I don't want other people on this forum betting bad information.
On page 278 of the Comp. cams catalog it say's in the very last paragraph.
"It is UNDESIRABLE to do as the lifters "pump up" lifters will cause the valves to open during the adjustment process,rather than positioning the valve lifter plunger in its operating position as it is supposed to do".
If you have questions at Comp cam their number is 1-800-999-0853.
On page 444 of Crane cams book it says.
"Many people mistakenly believe that hydraulic lifters must be soaked in oil overnight and be hand pumped up with a pushrod before installing into a new engine,however this is not necessary.
In fact,this could cause the lifter to act as a "solid" and prevent obtaining proper pre-load".
If you have questions call Crane cams at 904-258-6167.
Sometimes it is better to sit back and try to learn a thing or two on this forum.

Originally Posted by 30-A Rider

Thnkas for the explanation Erik. I made the mistaske of pumping my lifters on my first small block build when I was 18..lucky for me nothing catastrophic happened. Always appretiate detailed explantions. Many on here listn and appretiate it.

Sometimes,I come off as a smart a$$ but I don't want to see people make mistakes that they can prevent.