Oil pressure question

[gbarrett]

I've noticed lately that when my 84 GW gets pretty warm, the factory oil pressure gauge reads lower than I would like. It reads about halfway between the 20 and 40 mark. Is this normal?

I've read that the factory gauge is pretty much useless, so I'll probably get a mechanical one next weekend.

Thanks for your help.

Greg

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84 GW
Driveline is
Stock 360/727 combo.
New paint, carpet, stereo. Rhino grille, etc.
http://home.earthlink.net/~getoverit/index.html

[porkchop]

Wow that is pretty good! When mine gets warm it reads about 18-22 and I have the mechanical guage installed. I am sure that others will tell you that theirs drop down to zero at times.

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'67/'79 Wagoneer mix
“Old Timer”
Check it out! (http://members.fortunecity.com/porkchopsfsj)

Mods, Mods, and more Mods! The end is no where in site, but I am sure I am closer to the fork in the road.

[River Beast]

<BLOCKQUOTE>quote:</font><HR>Originally posted by porkchop:
Wow that is pretty good! When mine gets warm it reads about 18-22 and I have the mechanical guage installed. I am sure that others will tell you that theirs drop down to zero at times.

<HR></BLOCKQUOTE>

yup! I'm one of those "0" guys on a hot day at idle... I think I've narrowed it down to the sending unit....it's been doing this for 2 years http://www.ifsja.org/ubb/biggrin.gif if it wasn't im sure Ild have a new engine by now http://www.ifsja.org/ubb/biggrin.gif


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Todd
78 Wagoneer, "River Beast"
360/TH400/QT (maybe changin' QT soon to a Dana 18/20)
Dana 44's locked w/ 4.89's
39.50x15x15 Super Swamper TSL's on 15x12 Eagle 589's
7" SOA in front-7" Rear Shackle Inversion Mods
4" Skyjacker Softride
3" Trailmaster Bodylift
My FSJ site: http://www.geocities.com/spazz4life (http://www.geocities.com/spazz4life)
The "NEW" River Beast Preview site: <A HREF="http://home.earthlink.net/~tjnkk" TARGET=_blank>
http://home.earthlink.net/~tjnkk </A>
My E-mail: riverbeast@earthlink.net
"When approaching an intersection, remember...
the vehicle with the BIGGEST TIRES has the right of way..."

'93 3/4 ton 4x4 Suburban...a.k.a. "FSJ Hauler"

[WINGO]

If your not using a 20w - 50w oil you should consider doing so. I posted a similiar question about a year ago and recieved this tip from Snakeyes.

I haven't regreted the switch yet. A little hard starting in the cold in NJ but it gets the job done. You are in Florida and cold starts should not be a concern of yours.

But if you get in cold weather, just take it easy on start up.

Hope this helps and good luck!

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WINGO
Vineland, NJ
USA
http://albums.photopoint.com/j/Thumbnail?u=1330817&a=11068485&p=38536654&Width=100&Height=100&Sequence=0
1984 GW 360
Rough Country/Heckethorn 2 1/4" AAL (actual lift)
Rough Country/Heckethorn Nitro 9000 Shocks
Performance Accesories 3 " Body Lift

Soon to Have:
1- Rhino Grill
2- Alis-Chalmers Orange & Black Durabark exterior paint.
3- 33" X 12.50" tires

[ironroad29]

don't worry ,just remember ...10 psi for every 1,000 rpms and your good to go ,and as long as it comes up when you hit the go pedal ,your good


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"If a jeep can't take you there, maybe you should think twice about going"

[1nathan]

Cool, Another Fla. boy !
Do you know if you still have the original oil pump? If so, or if it is getting old, I would rebuild it. It is a quick and easy operation. When my psi. dropped on me, that is what I did and I now have great psi.
Good luck.
Nathan

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Nathan Van Meter

'87 Grand Wagoneer,3" spring lift,31"X10.5" Dunlop RV,Front Receiver,Factory Brush Guard,360 V8, NP229 & 727,Edelbrock Intake & carb.

'87 J-10, 3" Body Lift,1.5" Add a Leafs, 35" BFG Mud Terrains, Factory Brush Guard, 360 V8, NP208 & 727, Holley Pro-Jection, Jacobs ignition

'81 GW " parts truck ", 360 V8, NP208 & 727, 130K on odometer

[jeepbob]

It may also be the main bearings wearing out, these Nash motors we are running seem to wear out mains before the rods. The good news is that bearings are cheap and can be replaced without pulling the motor.

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65 wag. 360/edelbrock rb4/t400/20 t-case/4:10 d27/d44 tracloc/onboard air/onboard 110v power(no inverter)/1999 Lincoln t.c.leather buckets/taurus ctr console/winch/33x12.50/tunes/water proof door pads
soon to have new motor/d44frt/d60r(4:10)welded diff/custom bumpers
see ya in da mud

[fas2c]

Hey Jeepbob,
Do you have a block of instruction that we may follow? I may have to perform just such an act.
Thanks,
Earl

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The Big Orange
1974 Wagoneer
360-THM 400w/QT
31-10.5's
Super Saggy Springs
135,000 miles

[Chiefly77]

My pressure reads about 20-25 at regular engine temperature. It starts out higher around 40 or so when its cold, then slowly goes down as the engine warms up. Is this normal? I'm running 10W-30 oil is that too low of a viscosity? Thanks in advance.

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Charlie Nimitz
'77 Cherokee Chief W/T
360/TH-400,
QT w/low range
31" x 10.50" General Grabbers

My FSJ page (http://www.angelfire.com/nc2/chesterspage)

[Veepster]

I rebuilt my oil pump a few weeks ago and switched to 40w oil and now have 75psi cold and about 60 warm and it NEVER goes below 40....make sure to surface the oil pump cover when you rebuild the pump.....previous to this change I had 40psi cold and about 30 warm..

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Peace.............BartG

the Green Flash!
360ci
Custom 4v TBI
Edelbrock Performer Manifold
TH400, QT with low
4" skyjacker Rancho 9000's
33x12.50 BFG KO's 8" American Racing Baja Rims
Thorley headers, 3" exhaust, Dyno Max
Infiniti power leather seats
Custom billet shift knob by Millerluck
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