I've been running the jbp lifters and oil pump for about a year , I was wondering if anyone else has lifter tap? It's only at idle and the oil pressure is about 15psi ... Also running Mobil one fully synthetic 10w-30
LOL @ JBP "lifters"
i tore a few from a set down, no noticable difference over stock for anything other than the lobe surface. they "buff" it somehow and give it a swirl look. most likely they are used just cleaned up and re-surfaced then sold for WAY more than they are worth.
as for the oil pump, ive heard its nothing more than a replacement melling unit.
try some lucas oil stabilizer. sometimes our lifters just get sticky and need some extra love.
15 psi sounds weak even at idle, though.
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I used to have the Jbp oil pump before the 2.3 swap. Never had anything above 15psi at idle.
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it dropped down to 10 psi tonight........i have the glowshift oil spacer.. so its reading before the oil filter! i just recently hook the gauge back up with a new sender......at 75 mph it reads 100psi...
new stockerts have that swirl polish to them Brad
All the lightweight 2.3 lifters i bought for my build from NAPA have that swirl. It's all dependant on where they're manufactured, China, or Mexico.
I've read a good rule of thumb is 10 psi per 1000 rpm. So it doesn't seem so off.
- Your not-so-local, untrained, uncertified, backyard mechanic. But my @!#$ runs
The rule of thumb is 1 psi per 100 rpm, above is the same. LD9 spec is 10 psi at 900 rpm, the Quads are 15 psi at 900 rpm. I'd like to add why in the @!#$ would you put the sender in the block? Let me guess so you can be cool and have higher oil pressure than everyone else. lol I can see it.. I have a top end tick but I have great oil pressure in the block. Leave the sender in the head!!!!!
One thing, If there is no oil pressure in the towers of a quad 4 you don't have oil pressure in the block. Remember the check valve, unless this goes bad you might only have pressure below but not above.
We always take pressure readings from the block/lower end. If you have good pressure in the bottom end you should have pressure on the top end assuming the galleys are flowing properly. For a built motor you might want to test off of the head once in a while to be sure, but the bottom end is where I would keep it. Generally any pressure loss will come from the bottom end anyway. I say its more worth it to keep tabs on the pressure on your rods/mains and cylinder walls before everything in the head.
I take pressure reading from the block. Why? Because I'm more worried about oil flow in the block over the head.
Also GM uses block for the ecotec's and it is known the reading in the head on ecotecs are way lower than the block.
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