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Oil pressure
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Allis Wd45 View Drop Down
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Joined: 06 Nov 2017
Location: Washington
Points: 171 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Allis Wd45 Quote  Post ReplyReply Direct Link To This Post Topic: Oil pressure
    Posted: 14 Jul 2018 at 11:34pm
When my wd45 get a to operating temperature the oil pressure is just below the n in the word normal. Is this ok to run this way if I use it for pulling a drag and a rolla bar rake.
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DougS View Drop Down
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Joined: 03 Nov 2011
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Points: 2490 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DougS Quote  Post ReplyReply Direct Link To This Post Posted: 15 Jul 2018 at 5:11am
That's probably more oil pressure than you'll see on the average WD/WD45.
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Joined: 12 Sep 2009
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Points: 25247 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jaybmiller Quote  Post ReplyReply Direct Link To This Post Posted: 15 Jul 2018 at 6:10am
ANY oil pressure is good pressureSmile
Low revving engines don't need much oil, just has to move around 'here and there'. What probably kills most of them is overheating. Be sure to clean out the rad every few days,more if dusty and  have a good working temp gauge.
3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)

Never burn your bridges, unless you can walk on water
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Joined: 11 Sep 2009
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Points: 90804 		Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 15 Jul 2018 at 8:06am
what weight oil are you using... a slightly thicker oil will add a couple psi.
Like them all, but love the "B"s.
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DougS View Drop Down
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Joined: 03 Nov 2011
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Points: 2490 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DougS Quote  Post ReplyReply Direct Link To This Post Posted: 15 Jul 2018 at 9:00am
Originally posted by steve(ill) steve(ill) wrote:


what weight oil are you using... a slightly thicker oil will add a couple psi.

At the expense of oil flow.
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Allis Wd45 View Drop Down
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Joined: 06 Nov 2017
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Points: 171 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Allis Wd45 Quote  Post ReplyReply Direct Link To This Post Posted: 15 Jul 2018 at 9:07am
I’m using SAE 30
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Unit3 View Drop Down
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Joined: 17 Oct 2009
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Points: 5658 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Unit3 Quote  Post ReplyReply Direct Link To This Post Posted: 15 Jul 2018 at 9:39am
I have seen my dad run the "C" & "WD45's" without the valve cover to set the tappets running. They don't have much oil pressure at low idle, but they do make good oil volume. Seems to always be enough for them.
2-8070FWA PS/8050PS/7080/7045PS/200/D15-II/2-WD45/WD/3-WC/UC/C
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Allis Wd45 View Drop Down
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Joined: 06 Nov 2017
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Points: 171 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Allis Wd45 Quote  Post ReplyReply Direct Link To This Post Posted: 15 Jul 2018 at 4:03pm
I also noticed that if it idles and I rev it up to about 1/4 throttle it gives a puff of blue smoke is this normal?
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Joined: 01 Jul 2010
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Points: 829 		Post Options Post Options   Thanks (0) Thanks(0)   Quote 79fordblake Quote  Post ReplyReply Direct Link To This Post Posted: 15 Jul 2018 at 4:52pm
These engines don't have valve stem seals. When guides are worn the oil seeps down valve stem then gets burned.
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Points: 171 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Allis Wd45 Quote  Post ReplyReply Direct Link To This Post Posted: 15 Jul 2018 at 6:51pm
Is this enough oil to foul the plugs?
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Allis dave View Drop Down
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Joined: 10 May 2012
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Points: 3131 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Allis dave Quote  Post ReplyReply Direct Link To This Post Posted: 16 Jul 2018 at 7:07am
Originally posted by Allis Wd45 Allis Wd45 wrote:

Is this enough oil to foul the plugs?
 
Depends how bad it is. If you're not fouling plugs I wouldn't worry about it.
 
Below the N is kinda low. I would put some 15-40w in it. I think even the good Dr has 15w-40 in his WD45, or at least he recommends it to help pressure if needed. If it's 90 degrees outside the tractor is warm 30 weight is going to get pretty thin.
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Allis Wd45 View Drop Down
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Points: 171 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Allis Wd45 Quote  Post ReplyReply Direct Link To This Post Posted: 16 Jul 2018 at 10:48am
Ok I’ll try that.
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DrAllis View Drop Down
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Joined: 12 Sep 2009
Points: 22808 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 16 Jul 2018 at 12:18pm
From experience in the Spring of 1978....I found 30 wt to be thicker than 15W-40 when hot as used in a 7030 tractor.....47 psi oil pressure with 30 wt versus 45 psi oil pressure with 15W-40.
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Allis Wd45 View Drop Down
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Points: 171 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Allis Wd45 Quote  Post ReplyReply Direct Link To This Post Posted: 16 Jul 2018 at 1:55pm
That’s strange must be because 15-40 would act as a 40wt when warm? So should I run 15-40 then?
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Allis dave View Drop Down
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Points: 3131 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Allis dave Quote  Post ReplyReply Direct Link To This Post Posted: 16 Jul 2018 at 3:04pm
I remember Doc saying before that for some strange reason SAE 30 is thicker when warm than warm 10w-30. Even though they're both 30 weight. I looked up detailed specs once after that and sure enough, warm SAE 30 was still thicker than warm 10w-30. I never looked to compare SAE30 to 15w40. I'm sure you could look it up. Valvoline has pretty good specs literature.
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Allis Wd45 View Drop Down
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Points: 171 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Allis Wd45 Quote  Post ReplyReply Direct Link To This Post Posted: 16 Jul 2018 at 11:14pm
Should I try to add washers to the pressure spring or will this do more harm than good
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Stan IL&TN View Drop Down
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Points: 6730 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Stan IL&TN Quote  Post ReplyReply Direct Link To This Post Posted: 17 Jul 2018 at 7:27am
If you remove the valve cover and start it up and have any oil dripping out of the rocker arm shaft then you have enough pressure IMHO.
1957 WD45 dad's first AC

1968 one-seventy

1956 F40 Ferguson
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Points: 3131 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Allis dave Quote  Post ReplyReply Direct Link To This Post Posted: 17 Jul 2018 at 8:15am
You could add shims to the pressure spring, but it probably won't help.
 
The resistance to the oil system is in the oil filter and cam bearings. Usually the cam bearings get wore and allow too much oil through too easily which makes low oil pressure.
 
You can read about how the oiling system works here:
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Points: 4 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Johanwalter Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jul 2018 at 12:44pm
Check the pressure washer with a mechanical gauge first. Both oil filter and spinner seated correctly? Paccar brand filters? I have seen aftermarket filters not fit the housing correctly.

Edited by Johanwalter - 02 Aug 2018 at 1:34am
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