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It's in, running and has too high oil pressure??? #702566
05/19/10 05:42 PM
05/19/10 05:42 PM
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Tampa Florida
dc426 Offline OP
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It's finally all together, in the car and running. It was actually in and fired up last week but I had a rocker adjuster break. So finally UPS dropped off the the ones and I re-fired it up. It sounds good but seems to have unusually high oil pressure.

Since the episode of the windage tray piece braking off I have replaced all new bearings, rings, polished the crank, and R&R the heads. The old oil pump used to have 65 LBS hot or cold. The new one has about 75 at idle and seems to go over 100 if you rap it. I got the motor up to 160*. I'm using Rotella 15/40 in it. I'm gonna switch to a straight 30 wt.

Any thoughts on this?? I have yet to get the car to the track and really put some heat in it. But, I still think that's a little high though???
DC

Re: It's in, running and has too high oil pressure??? [Re: dc426] #702567
05/19/10 05:44 PM
05/19/10 05:44 PM
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what kind of pump are you using? talk to Woody, didn't he just go through the same thing all you need is a stock pump.

Re: It's in, running and has too high oil pressure??? [Re: Quicktree] #702568
05/19/10 05:49 PM
05/19/10 05:49 PM
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dc426 Offline OP
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Melling high volume pump. Same as what was in there before.

Re: It's in, running and has too high oil pressure??? [Re: dc426] #702569
05/19/10 05:56 PM
05/19/10 05:56 PM
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Quote:

Melling high volume pump. Same as what was in there before.


thats probably your problem. these new hv pumps have a lot of pressure.

Re: It's in, running and has too high oil pressure??? [Re: dc426] #702570
05/19/10 05:56 PM
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even with a HV pump the relief should open and bleed off pressure back into the pump suction. best guess would be the relief valve hanging up. did you disassemble the pump and clean/inspect it before installaton? when i was a kid i put the cup plug in backwards...150# OP darn near blew the filter apart

Re: It's in, running and has too high oil pressure??? [Re: jamesc] #702571
05/19/10 06:02 PM
05/19/10 06:02 PM
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dc426 Offline OP
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I didn't but when I fired it up the other day before the rocker adjuster broke it was pretty much normal. Had 75 constant.

Re: It's in, running and has too high oil pressure??? [Re: dc426] #702572
05/19/10 06:06 PM
05/19/10 06:06 PM
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I can't see that oil pressure hurting anything. Seems fine to me.
I have an adjustable external deal on my B1, and just for kicks, tried back to back runs with oil pressure 75 and 100+.. There was ZERO difference in ET..
So why stress over nothing..



Chris..

Re: It's in, running and has too high oil pressure??? [Re: Chris'sBarracuda] #702573
05/19/10 06:47 PM
05/19/10 06:47 PM
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I would never run straight 30 weight. I would go to 5W30 or maybe the 10W30 Valvoline racing oil and if your water temp was 160 that means nothing. The oil temp could still be way lower than that. Drive it for 30 minutes and report back.

Last edited by dragrcr97; 05/19/10 06:49 PM.

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Re: It's in, running and has too high oil pressure??? [Re: Ron Silva] #702574
05/19/10 06:54 PM
05/19/10 06:54 PM
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dc426 Offline OP
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Wilco, Thanks guys

Re: It's in, running and has too high oil pressure??? [Re: dc426] #702575
05/19/10 07:00 PM
05/19/10 07:00 PM
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Quote:

It sounds good but seems to have unusually high oil pressure.

The old oil pump used to have 65 LBS hot or cold. The new one has about 75 at idle and seems to go over 100 if you rap it.

I'm using Rotella 15/40 in it. I'm gonna switch to a straight 30 wt.


Switching to straight 30 wt will make the cold pressure even higher. I would stick with the 15W-40.

Put the relief spring from the old pump in the new pump. The new pump spring is likely different.


1993 Daytona, 5.50 at 130mph (1/8) 1.19 sixty ft (PG). Link to 572 B1 - Part 1
Re: It's in, running and has too high oil pressure??? [Re: Ron Silva] #702576
05/19/10 07:01 PM
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Quote:

I would never run straight 30 weight.




agreed, fwiw i believe the shell 15-40 is pretty decent oil. also as mentioned if the oil temp wasn't up is could contribute.

Re: It's in, running and has too high oil pressure??? [Re: jamesc] #702577
05/19/10 07:07 PM
05/19/10 07:07 PM
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Chris I just went through this myself my HV pump was pushing 80 psi cold at idle and well over 100 and the relief was not sticking as I pulled the pump apart and cleaned it.
I ended up putting a standard pump in mine but before I did I put a 5w30 in it and that helped a lot ran it for a few weeks like that before I pulled and replaced the pump.
I found out a standard pump will do just fine with a little clean up and it uses less HP to turn.
My standard pump with 10w40 engine hot holds 40 psi at idle and almost 80 down track.


70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake

best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4
Re: It's in, running and has too high oil pressure??? [Re: Chris'sBarracuda] #702578
05/19/10 07:26 PM
05/19/10 07:26 PM
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Quote:

I can't see that oil pressure hurting anything. Seems fine to me.
I have an adjustable external deal on my B1, and just for kicks, tried back to back runs with oil pressure 75 and 100+.. There was ZERO difference in ET..
So why stress over nothing..



Chris..


well having blown 3 filters apart in 2 weeks at the track during a burn out the guys get pissed in a hurry I bet Myron remembers that. I made changes to the springs every time. ended up with a stock pump and spring to solve the problem. it does matter and dangerous to boot.

Re: It's in, running and has too high oil pressure??? [Re: dc426] #702579
05/19/10 07:49 PM
05/19/10 07:49 PM

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Quote:

I didn't but when I fired it up the other day before the rocker adjuster broke it was pretty much normal. Had 75 constant.




are you saying you re-used the same pump but didn't take it apart to thoroughly clean and remove any metal that might have been trapped in it?
if you did, i guess you know where that metal could end up.

please, say it ain't so...

Last edited by DRAM_Perf_Only; 05/19/10 07:50 PM.
Re: It's in, running and has too high oil pressure??? [Re: dusturbd340W5] #702580
05/19/10 07:55 PM
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if those HV pumps are maintaining that much pressure with the relief open they should change things a little bit. that said i used to be of the opinion that the bigger the oil pump the better. now that i've grown up (somewhat) imho the best oil pump is the smallest one that will maintain the desired pressure. imho i wouldn't install any pump before taking it apart and looking it over. too much chance for metal scrap or what not to be in it.

Re: It's in, running and has too high oil pressure??? [Re: jamesc] #702581
05/19/10 08:09 PM
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Quote:

if those HV pumps are maintaining that much pressure with the relief open they should change things a little bit. that said i used to be of the opinion that the bigger the oil pump the better. now that i've grown up (somewhat) imho the best oil pump is the smallest one that will maintain the desired pressure. imho i wouldn't install any pump before taking it apart and looking it over. too much chance for metal scrap or what not to be in it.




I took the HV off got a standard Melling pump took it apart cleaned it touched it up with a sand paper roll to clean up the flashing and it delivers plenty of oil pressure


70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake

best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4
Re: It's in, running and has too high oil pressure??? [Re: Quicktree] #702582
05/19/10 08:18 PM
05/19/10 08:18 PM
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Quote:

Quote:

I can't see that oil pressure hurting anything. Seems fine to me.
I have an adjustable external deal on my B1, and just for kicks, tried back to back runs with oil pressure 75 and 100+.. There was ZERO difference in ET..
So why stress over nothing..



Chris..


well having blown 3 filters apart in 2 weeks at the track during a burn out the guys get pissed in a hurry I bet Myron remembers that. I made changes to the springs every time. ended up with a stock pump and spring to solve the problem. it does matter and dangerous to boot.





System 1


Chiris..

Re: It's in, running and has too high oil pressure??? [Re: Chris'sBarracuda] #702583
05/19/10 08:30 PM
05/19/10 08:30 PM
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Quote:

Quote:

Quote:

I can't see that oil pressure hurting anything. Seems fine to me.
I have an adjustable external deal on my B1, and just for kicks, tried back to back runs with oil pressure 75 and 100+.. There was ZERO difference in ET..
So why stress over nothing..



Chris..


well having blown 3 filters apart in 2 weeks at the track during a burn out the guys get pissed in a hurry I bet Myron remembers that. I made changes to the springs every time. ended up with a stock pump and spring to solve the problem. it does matter and dangerous to boot.





System 1


Chiris..


thats what we changed to after the 3rd time

Re: It's in, running and has too high oil pressure??? #702584
05/19/10 08:37 PM
05/19/10 08:37 PM
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dc426 Offline OP
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Quote:

are you saying you re-used the same pump but didn't take it apart to thoroughly clean and remove any metal that might have been trapped in it?




Of course not. I bought a new Melling HV pump.

Re: It's in, running and has too high oil pressure??? [Re: Quicktree] #702585
05/19/10 08:45 PM
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Quote:

Quote:

Quote:

Quote:

I can't see that oil pressure hurting anything. Seems fine to me.
I have an adjustable external deal on my B1, and just for kicks, tried back to back runs with oil pressure 75 and 100+.. There was ZERO difference in ET..
So why stress over nothing..



Chris..


well having blown 3 filters apart in 2 weeks at the track during a burn out the guys get pissed in a hurry I bet Myron remembers that. I made changes to the springs every time. ended up with a stock pump and spring to solve the problem. it does matter and dangerous to boot.





System 1


Chiris..


thats what we changed to after the 3rd time





CH!T Tony even I learned after the second time

I run straight 70 and have 200lbs of pressure.

Jimmy

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