Oil pump

[ericcarr]

I need to prime my oil pump for my 90 sundancer with the 454.. right now I have the motor out in my barn & would like to prune the oil pump with my pump primer. I guess my question is which direction should I turn the oil pump?

 

[Scott06]

Distributor rotates clockwise when viewed from above so oil pump needs to turn same way https://www.mcmaster.com/pins/toggle-lock-clevis-pins-with-handle/

Is this a rebuild or just been sitting? another way to do this with out pulling the distributor is to pull the plugs and run it on the starter till you build oil pressure or see it at the rocker arms

 

[ericcarr]

Well…I bought it from a guy that told me it was sitting for a couple years..I did put my bore scope in the cylinders to check them & they are bored out 0.30 like he told me & there’s still the cross hatching on the walls…he told me it was rebuilt 10 hours ago…everything seems to look good though…I did hook up a battery & turned it over while on my engine cradle..

 

[Scott06]

Well…I bought it from a guy that told me it was sitting for a couple years..I did put my bore scope in the cylinders to check them & they are bored out 0.30 like he told me & there’s still the cross hatching on the walls…he told me it was rebuilt 10 hours ago…everything seems to look good though…I did hook up a battery & turned it over while on my engine cradle..

You certainly can take the distributor out and prime it. I would just run it on the starter to get oil to the rockers and then run it before putting it in to the boat. Its pretty easy to run on the ground and check everything out before you drop it in.

 

[ericcarr]

I plan on doing that however, the next step I guess would have to be finding a good intake manifold to put on it. I’m replacing the stock one that has that goofy ass divorced joke or stove chalk whatever you wanna call it in the manifold. Since I can’t seem to find a black off plate for it

 

[achris]

.... Since I can’t seem to find a blanking plate for it

Why not just make one? All you need is a small piece of flat bar, 1.6mm would be plenty thick enough, and cut it to the same size footprint as the choke. Use a bit of gasket paper and it'll be done. Save the cost of a new manifold... (And the time to pull the old and fit the new.)

Chris.......

 

[Scott Danforth]

how to make a pump primer

take a piece of 3/8" diameter rod, grab a grinder and make a tang on the end. then tack weld a washer and a piece of 1/2" EMT conduit.

chuck it up in your 1/2" drill and spin it.

I make my priming tools out of what is handy. the last one was a bad 4.3 distributor (plastic housing) that I used a hammer to break the flange off, ground the gear off with the 4/5" angle grinder

In your case, I would simply pull the dizzy cap, pull the plugs, squirt some oil in the bores and used the starter. you should see oil in 10-15 seconds.

 

[ericcarr]

how to make a pump primer

take a piece of 3/8" diameter rod, grab a grinder and make a tang on the end. then tack weld a washer and a piece of 1/2" EMT conduit.

chuck it up in your 1/2" drill and spin it.

I make my priming tools out of what is handy. the last one was a bad 4.3 distributor (plastic housing) that I used a hammer to break the flange off, ground the gear off with the 4/5" angle grinder

In your case, I would simply pull the dizzy cap, pull the plugs, squirt some oil in the bores and used the starter. you should see oil in 10-15 seconds.

I already have a oil pump primer, I just couldn’t remember which way the oil pump needed to be turned.

 

[ericcarr]

Why not just make one? All you need is a small piece of flat bar, 1.6mm would be plenty thick enough, and cut it to the same size footprint as the choke. Use a bit of gasket paper and it'll be done. Save the cost of a new manifold... (And the time to pull the old and fit the new.)

Chris.......

I guess I could do that, anyone know the screw size for it, I don’t have one for it? If not no big deal I can figure it out.

 

[achris]

I guess I could do that, anyone know the screw size for it, I don’t have one for it? If not no big deal I can figure it out.

It's called out as 0.190-24 x 0.500, which makes it 10-24UNC x half inch long. (https://www.mercruiserparts.com/69235-screw)

Chris.......

 

[ericcarr]

OK I finally got around to hooking up my oil pump primer and spinning it clockwise. My drill only goes to I believe it is 1200 RPMs, shouldn’t I see oil coming out of the rocker arms at that speed?

 

[Scott Danforth]

Did the drill load up? If not you were not building pressure

 

[ericcarr]

What do you mean by load up? I ran it for a couple minutes if that’s what you’re meaning.

 

[Scott Danforth]

Normally about 20 seconds of spinni,g and the drill rpm drops significantly as the pump gets loaded. If not, spin it the other way.

My 3/8 drill will stop completly. I normally need the 1/2"

 

[ericcarr]

Spinning it the opposite direction won’t damage anything?

 

[Scott Danforth]

Spinning it the opposite direction won’t damage anything?

Nope

 

[ericcarr]

You know I just thought of something. While transporting the motor in my flatbed trailer, the motor came dislodged off of the 4 x 4‘s that I had a meltdown and hence the Motor was resting on the oil pan. If the oil pan head just the slightest dent in it, because that prevent the oil pump pick up from picking up the oil?

 

[Scott Danforth]

Yes, pull the pan. Use paydoh between pickup and tank to make sure you have 1/4 to 3/8 gap

 

[Scott06]

Agreed check the pan to pick up clearance.

 

[ericcarr]

OK, I installed a oil pressure gauge to the motor and as you can see I am getting almost 64 pounds of pressure at roughly, I think my drill turns 1200 RPMs. I did get oil up to the Top part of the motor coming out at the rocker arms but it did take quite a while. Is this a normal reading?