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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Joined: Aug 2003
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dc426
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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
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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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Quicktree
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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.
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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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Chris'sBarracuda
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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..
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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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Joined: Apr 2005
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Ron Silva
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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.
SRT DEMON ONE SEAT
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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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Joined: Jan 2003
Posts: 16,936 NC
440Jim
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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.
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Re: It's in, running and has too high oil pressure???
[Re: Ron Silva]
#702576
05/19/10 07:01 PM
05/19/10 07:01 PM
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Joined: Jan 2003
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jamesc
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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.
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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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dusturbd340W5
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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
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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.
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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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Anonymous
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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.
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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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Chris'sBarracuda
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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..
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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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Joined: Jan 2003
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Quicktree
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I Win
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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
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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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Joined: Aug 2003
Posts: 5,000 Tampa Florida
dc426
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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.
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Re: It's in, running and has too high oil pressure???
[Re: Quicktree]
#702585
05/19/10 08:45 PM
05/19/10 08:45 PM
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Joined: Mar 2006
Posts: 5,067 Orlando Florida
blown572dart
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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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