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  #1  
Old 11-27-2011, 08:02 AM
skikemp skikemp is offline
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Default oil pressure problem on a 430

Just installed a rebuilt 430 and have very little oil pressure and only one head is getting oil and very little at that. This motor was rebuilt 6 years ago and was never installed, I bought it as kind of a basket case. Motor was in a create and all the parts where in the trunk Any ideas?
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  #2  
Old 11-27-2011, 10:44 AM
redstangbob redstangbob is offline
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You might try contacting Theo at the MEL forum http://ford-mel-engine.com/index.php It's not a real active place but there are some knowledgeable guys there. Good luck, Bob C
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Old 11-27-2011, 11:56 AM
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partsetal partsetal is offline
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I bought a 430 that had an engine that had been rebuilt 25 years ago and never run. What I found when I pressurized the oil system before starting it was that several of the oil galley plugs had not been installed, particularly the ones at the back of the block above the cam. There is also another at the front of the block behind the cam gear. I would check these.
Carl
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Old 11-28-2011, 11:44 AM
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tbird430 tbird430 is offline
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Question

Are you running the original 430cid "vaccum assist" oil pump?

Or did you do away with it (like most) & install a regular 352-390cid oil pump with a new (shorter) drive shaft?
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Old 11-28-2011, 09:08 PM
skikemp skikemp is offline
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I Don't know, There is a extra tube that comes off the bottom of the pump. I don't know if thats stock of after market.
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Old 11-28-2011, 09:32 PM
gaffney1951 gaffney1951 is offline
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Default If it's not the galley plugs ...

check to make sure you have a good seal at the the pump and the pickup and that there is sufficient clearance between the pickup screen and the bottom of the pan. Could also be incorrectly installed cam bearings. Not that familiar with the MEL's so I can't say for sure, but it could also be a pressure relief valve issue. Could also be to much bearing clearance on the rods and mains. If the MEL forum has a tech section I would check there first. Are you using a 1/2 inch drill to prime? Turning the right direction? Mike
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Old 11-28-2011, 10:31 PM
skikemp skikemp is offline
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I used a 3/8 drill to prime but it was all it could do to spin the pump.
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Old 11-28-2011, 10:47 PM
gaffney1951 gaffney1951 is offline
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Default You really need ...

a half inch drill if you don't want to burn up the 3/8, and if the MEL is like the FE you need to turn it counter clockwise. Check your manual or online for Dist rotation. Mike

Last edited by gaffney1951 : 11-28-2011 at 10:49 PM.
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Old 11-29-2011, 04:02 AM
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skikemp, I have to commend you for doing the correct tests before you run into trouble (an ounce of prevention...). Redstangbob, partsetal (Carl), tbird430 (Jon), and gaffney1951 (Mike) all have lots of experience with FE's and MEL engine. They are very similar.

Your engine must have plenty of oil or it won't last long. Buy a cheap oil gauge and screw it into one of the oil plugs on the side. If the drill motor turns hard, you should see lots of pressure on the gauge. (Pressure IS resistance to flow.)

I suggest you pull your rocker arm shafts off (take 20 pictures of this process) and pay attention to the notch on the lower front of each shaft. Then, slide each rocker arm off. Look for obvious galling on the shaft. Wire brush each rocker and run a small drill through the oil holes (my Y-Block arms had two holes each). Then pull the end plugs off the shafts. (I drilled and tapped a 10-32 hole in one plug end, screwed in a screw and used that to pull the plug out.) Do that to each shaft, and run a rod through to knock out the opposite plugs. You can tighten and leave the screw in after you're done. My shafts were a mess with what looked like heavy black grease inside. I replaced both shafts.

Both the 352 and 430 have the same firing order (1-5-4-2-6-3-7-8) and both distributors rotate counterclockwise (looking down). Before re-assembly, run your 1/2" drill motor in reverse on the oil pump drive shaft, and see if oil comes up to each head. I have a sneakin' suspicion it does, but dirt has packed all your rocker holes shut. If you don't get oil at all, I will go with Mike's suggestion that the cam bearings were installed wrong.

Sometimes the rocker arms don't align straight with the shaft's oil holes on the bottom. We use a Dremmel tool with a skinny cutoff disk to widen the oil hole like this:

That way the rocker arm can be a little off either way, and still get plenty of oil.

I hope this helps. - Dave
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  #10  
Old 11-29-2011, 08:02 PM
skikemp skikemp is offline
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Default Thank you All

I really appreciate all your guys help, It sure makes it easier to diagnose the problems. I uploaded a picture of the oil pump that came out of the motor, but it's not the same as the new one. I called Bakers Auto today and they said they never one like this. (Notice the lower pump) Any idea's?
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