Loud “Pop” after priming oil pump
okay... in Minnesota right now.. pretty chilly, but garage is moderately heated. Break-in Oil is most likely pretty stiff.
My engine is in a “built” state, but waiting to be mated with tranny and installed in car. I hadn’t primed the oil pump since last Fall (everything went well in the Fall... lots of good oil passage leakage as I rotated engine), so decided it was time to do it again. I pulled out the distributor and oil drive gear (paying attention to orientation from when I installed) and primed counter clockwise (383) with a battery impact driver to the point where it got very stiff, then kept going a little more. I could hear lots of good suction and dripping, etc.
I reinstalled distributor, then wanted to just rotate the engine a tad. All was going well...good sounds, dripping... then, as I slowly rotated some more, I heard a loud “POP”, as if I stomped on about a 6” balloon.
Anybody know what that might have been? Maybe oil passages simply lining up in crank/cam/bearing journals.... maybe a valve, etc??
I rotated the engine a little more and all seemed fine, but that freaked me out a little (first time building an engine), so didn’t do too much more.
Thanks for any info!
Jason
okay... in Minnesota right now.. pretty chilly, but garage is moderately heated. Break-in Oil is most likely pretty stiff.
My engine is in a “built” state, but waiting to be mated with tranny and installed in car. I hadn’t primed the oil pump since last Fall (everything went well in the Fall... lots of good oil passage leakage as I rotated engine), so decided it was time to do it again. I pulled out the distributor and oil drive gear (paying attention to orientation from when I installed) and primed counter clockwise (383) with a battery impact driver to the point where it got very stiff, then kept going a little more. I could hear lots of good suction and dripping, etc.
I reinstalled distributor, then wanted to just rotate the engine a tad. All was going well...good sounds, dripping... then, as I slowly rotated some more, I heard a loud “POP”, as if I stomped on about a 6” balloon.
Anybody know what that might have been? Maybe oil passages simply lining up in crank/cam/bearing journals.... maybe a valve, etc??
I rotated the engine a little more and all seemed fine, but that freaked me out a little (first time building an engine), so didn’t do too much more.
Thanks for any info!
Jason