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no oil pressure when it starts #768997
08/08/10 07:11 PM 08/08/10 07:11 PM
Joined: Jun 2010
Posts: 42
napa, ca
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rice2muscle Offline OP
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rice2muscle  Offline OP
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Joined: Jun 2010
Posts: 42
napa, ca
543 rb victor heads, milodon external dual pickup, -12an hose (dual). i bought a fancy top cover plate off a guy on moparts a while back too.

here is the issue, when it sits for about a week i start it up it takes like 2 -3 seconds before my guage reads any pressure. i do not like that. Ive heard these systems do drain back but after a week? really that seems a bit extreme.
so what i need to know is, will i hurt the motor if i dont prime the oil pump everytime? or is this normal and everybody just starts it up and waits for pressure... little advisde guys thanks.
Re: no oil pressure when it starts [Re: rice2muscle] #768998
08/08/10 07:17 PM 08/08/10 07:17 PM
Joined: Jul 2008
Posts: 30,470
Florida STAYcation
dOc ! Offline
The village idiot's idiot
dOc !  Offline
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Florida STAYcation
Sounds like it is ACCUMULATOR time furr you !

And if you have a ton of compression ... this situation is NOT GOOD.

Re: no oil pressure when it starts [Re: dOc !] #768999
08/08/10 07:23 PM 08/08/10 07:23 PM
Joined: Jul 2004
Posts: 653
Fredericksburg Va
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plycuda Offline
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Fredericksburg Va
make sure you loop the line up the side of the block then down to the pump. make sure fittings are tight. you either have a air leak letting the oil drain back or the lines need to be up higher to keep the oil at the pump. mine can sit for a month and oil pressure is instant. have had that set up for 20 years on 6 different motors never a problem on start up.
Re: no oil pressure when it starts [Re: plycuda] #769000
08/08/10 08:43 PM 08/08/10 08:43 PM
Joined: Jun 2005
Posts: 6,257
gulfport, ms, west mi
rowin4 Offline
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rowin4  Offline
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gulfport, ms, west mi
My line goes almost to the head then back down to the pump.

it's ok to butt heads, just don't do it with a butthead
Re: no oil pressure when it starts [Re: rice2muscle] #769001
08/08/10 10:22 PM 08/08/10 10:22 PM
Joined: Aug 2003
Posts: 43,274
Bend,OR USA
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Cab_Burge Offline
I Win
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Bend,OR USA
Two or three seconds is not unusuall on dual line Milidon sytems. What type and brand oil pressure gauge are you using now? If mechanical what size line from the motor to the gauge? I have used both 1/8 inch and 1/4 inch lines on mechanical guages, the 1/4 inch line makes the oil pressure act like a tachometer

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: no oil pressure when it starts [Re: Cab_Burge] #769002
08/09/10 09:34 AM 08/09/10 09:34 AM
Joined: Jan 2003
Posts: 13,380
Marion, South Carolina [><]
an8sec70cuda Offline
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Marion, South Carolina [><]
Quote:

Two or three seconds is not unusuall on dual line Milidon sytems.


Both of mine do the same thing, nothing wrong with it. Been using them for several years w/ no issues.

CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
Re: no oil pressure when it starts [Re: an8sec70cuda] #769003
08/09/10 11:06 AM 08/09/10 11:06 AM
Joined: Oct 2004
Posts: 8,165
Left Coast
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BobR Offline
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Left Coast
2 or 3 seconds? I've had them take 10-15. There is no problem with 2 or 3 seconds.
Re: no oil pressure when it starts [Re: BobR] #769004
08/09/10 12:29 PM 08/09/10 12:29 PM
Joined: Nov 2007
Posts: 778
Sherwood park, Alberta.
go green Offline
super stock
go green  Offline
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Posts: 778
Sherwood park, Alberta.
This is thread # 50 on this topic with Milodon.

With out a doubt that pump is the worst aftermarket pump for the BBD that was ever designed. Milodon has not addressed that priming problem for over 20 years ( why would they because you guys keep buying them )

Rant over

Ya it does help putting ridiculously long pick up line and have it loop up to the valve cover , but it will still do it after a long sit anyways.


6.50 @ 226 MPH 4.25 @ 186 MPH
https://www.youtube.com/watch?v=YX86DHGKBo0
Re: no oil pressure when it starts [Re: go green] #769005
08/09/10 01:51 PM 08/09/10 01:51 PM
Joined: Oct 2004
Posts: 8,165
Left Coast
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BobR Offline
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Left Coast
Quote:

This is thread # 50 on this topic with Milodon.

With out a doubt that pump is the worst aftermarket pump for the BBD that was ever designed. Milodon has not addressed that priming problem for over 20 years ( why would they because you guys keep buying them )

Rant over

Ya it does help putting ridiculously long pick up line and have it loop up to the valve cover , but it will still do it after a long sit anyways.



I ended up with check valves in my lines. I agree that there are better oiling systems.
Re: no oil pressure when it starts [Re: BobR] #769006
08/09/10 02:10 PM 08/09/10 02:10 PM
Joined: Jan 2003
Posts: 13,380
Marion, South Carolina [><]
an8sec70cuda Offline
I Live Here
an8sec70cuda  Offline
I Live Here

Joined: Jan 2003
Posts: 13,380
Marion, South Carolina [><]
I've never had any priming issues with mine sitting for long periods of time. On both of my motors, the lines never turn up, or go above the pump. Both actually point down as soon as they come out of the pump. One motor has the Milodon pump and cover, the other just has the Milodon cover on a Melling HV pump. It does take a couple or 3 seconds to get pressure on the gauge, but no more than that. No check valves, just -12 braided hose.

Don't get me wrong, there's definitely some better stuff out there. Just sharing my experience.

CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
Re: no oil pressure when it starts [Re: BobR] #769007
08/09/10 02:21 PM 08/09/10 02:21 PM
Joined: Jul 2008
Posts: 30,470
Florida STAYcation
dOc ! Offline
The village idiot's idiot
dOc !  Offline
The village idiot's idiot

Joined: Jul 2008
Posts: 30,470
Florida STAYcation
Quote:

2 or 3 seconds? I've had them take 10-15. There is no problem with 2 or 3 seconds.



TEN to FIFTEEN seconds ? ...... no-wonder you have gone MAD !!

Re: no oil pressure when it starts [Re: dOc !] #769008
08/10/10 02:15 AM 08/10/10 02:15 AM
Joined: Jun 2010
Posts: 42
napa, ca
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rice2muscle Offline OP
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rice2muscle  Offline OP
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Joined: Jun 2010
Posts: 42
napa, ca
i love you guys.... lol
so this is what im hearing
#1- its fine
#2- fix it

whats a guy supposed to think? i saw check valves in summit, my question was do they restrict flow?

also is one oil better at protection than another for these startups? i remember watching an infomercial on zmax oil additive... any thoughts on that?
Re: no oil pressure when it starts [Re: rice2muscle] #769009
08/10/10 03:00 AM 08/10/10 03:00 AM
Joined: Aug 2003
Posts: 43,274
Bend,OR USA
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Cab_Burge Offline
I Win
Cab_Burge  Offline
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Bend,OR USA
Where are you taking the oil pressure readings from? Back of the block takes a little time for the oil to fill the oil galleys up so the gauge will see the pressure If that is the case 2 or 3 seconds is normal, also as I mentioned earlier the size of the oil pressure line can and does make a difference on how quick the guage will read changes, start up to 80 lbs on a small 1/8 tube size can take 2 or 3 seconds to see the increase, on the 1/4 inch line it looks like the tach needle climbing MY is your fine, don't sweat the petty stuff

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: no oil pressure when it starts [Re: Cab_Burge] #769010
08/10/10 08:34 AM 08/10/10 08:34 AM
Joined: Jul 2010
Posts: 3,502
SOUTH JERSEY
HEMIFRED Offline
master
HEMIFRED  Offline
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Posts: 3,502
SOUTH JERSEY
Quote:

Where are you taking the oil pressure readings from? Back of the block takes a little time for the oil to fill the oil galleys up so the gauge will see the pressure If that is the case 2 or 3 seconds is normal, also as I mentioned earlier the size of the oil pressure line can and does make a difference on how quick the guage will read changes, start up to 80 lbs on a small 1/8 tube size can take 2 or 3 seconds to see the increase, on the 1/4 inch line it looks like the tach needle climbing MY is your fine, don't sweat the petty stuff




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