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Re: Oil pressure vs volume
Posted: Thu May 21, 2020 4:05 pm
by piston guy
Steve I use two cover plates on my pumps as a dormer Ford engineer told me they found as the pressure increased , the cover would flex and bleed off pressure. Simple virtual no cost and I did see better pressure because of it. I do it to all of my pumps ( even aluminum ) except obviously those with a lower bearing and 429-460 "cover feed" pumps.
Re: Oil pressure vs volume
Posted: Thu May 21, 2020 4:41 pm
by allencr267
piston guy wrote: ↑Thu May 21, 2020 4:05 pm...the cover would flex and bleed off pressure.
Thanks.
Super duper helical gotta be more, the reason some swear HV's necessary?
Re: Oil pressure vs volume
Posted: Thu May 21, 2020 4:43 pm
by tuffxf
Been running the two cover plates on mine forever as well, good thing.
Steve have you verified lifter to lifter bore clearances?
Correct me if I’m wrong, this engine of yours would it be the first one that is up and running with any real dyno time on it?
Cheers
Re: Oil pressure vs volume
Posted: Thu May 21, 2020 4:47 pm
by allencr267
F'up blanked
Re: Oil pressure vs volume
Posted: Thu May 21, 2020 4:57 pm
by Steve.k
tuffxf wrote: ↑Thu May 21, 2020 4:43 pm
Been running the two cover plates on mine forever as well, good thing.
Steve have you verified lifter to lifter bore clearances?
Correct me if I’m wrong, this engine of yours would it be the first one that is up and running with any real dyno time on it?
Cheers
I’ll confirm that got to get to my notes. Yes very first one. Approximately 50 dyno runs now.
Re: Oil pressure vs volume
Posted: Thu May 21, 2020 5:38 pm
by tuffxf
Thats cool!
Be interesting to see how it turns out bottom end wise, your the test pilot!
Do they have an oiling diagram for these or is it identical to 351w
Cheers
Re: Oil pressure vs volume
Posted: Thu May 21, 2020 7:58 pm
by Steve.k
They are identical. Lifter bore looks to be a smidge over .001.
Re: Oil pressure vs volume
Posted: Thu May 21, 2020 8:22 pm
by tuffxf
ok thanks,
A smidge over .001, is that measured ?
Must be similar to a mick hair!
Re: Oil pressure vs volume
Posted: Thu May 21, 2020 9:36 pm
by Steve.k
Gets above 1.5 i get worried. Anything in between good.
Re: Oil pressure vs volume
Posted: Thu May 21, 2020 10:03 pm
by Steve.k
Just pulled some rod bearings to check all perfect after 27 pulls on dyno.
Re: Oil pressure vs volume
Posted: Thu May 21, 2020 10:33 pm
by tuffxf
very good!
Re: Oil pressure vs volume
Posted: Thu May 21, 2020 10:36 pm
by Steve.k
piston guy wrote: ↑Thu May 21, 2020 4:05 pm
Steve I use two cover plates on my pumps as a dormer Ford engineer told me they found as the pressure increased , the cover would flex and bleed off pressure. Simple virtual no cost and I did see better pressure because of it. I do it to all of my pumps ( even aluminum ) except obviously those with a lower bearing and 429-460 "cover feed" pumps.
Never heard that before Randy. I could try it. By the way your pistons worked awesome in this unit. Thanks again.
Re: Oil pressure vs volume
Posted: Fri May 22, 2020 12:50 pm
by Steve.k
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Excuse dirty pan. Everything going in parts washer shortly.
Re: Oil pressure vs volume
Posted: Sat May 23, 2020 1:50 pm
by Kevin Johnson
I hope this fits correctly. The screening is tilted up a bit to allow it to lay against the pan wall and introduce some compression/bending along the bias, The extra pieces are spacers you might want to use to avoid having to grind on the welds.
Hope this helps.
IMG_E1825.JPG
Re: Oil pressure vs volume
Posted: Sat May 23, 2020 2:40 pm
by Steve.k
Thanks Kevin. Appreciate the help I’ll get it fabbed in. Had everything tore down for inspection and looks good. Few things to touch up and back together.