Oil filter bulge, Jiffy Pop NEW concern, 1 cyl intermittently pre-detonates help! Michigan Build, 2016 Build-Off Options

[Garland]

This engine is for my Michigan Build, 2016 Build-Off Challenge. Needed to come to the "Garage" for some help.

Fresh rebuilt on start up, my first oil filter inflated, then leaked at the seal. Second try, filter massive leak blew the seal out. I have a flow probem. Looking for help. I must be building pressure, just won't leave the filter.

[pgollender]

What is the length of the spring supposed to be ? Mine is 60mm out of (EB) 1973 block.
I had high oil pressure too on initial start-up (65psi) after complete rebuild . No filter failure but a small leak developed at the pressure sensor threads ( no sealant, no crush washer installed)

[Mark Henry]

I had high oil pressure too on initial start-up (65psi) after complete rebuild .

That's pretty well normal for a cold start anytime. On a real cold day you can see over 150lbs on start-up with thick oil.
Once full hot you should see 10lbs per 1000rpm

BTW I've done the same as the OP on a new engine when I once tried to cheap out and use an econo filter for break in.
Took me a day to clean up the three cars I hosed. Most expensive $5 I ever saved.

That's why you don't cheap out with oil filters.