Olds 350, no oil to rockers
#1
Olds 350, no oil to rockers
Need some help and advice regarding my new rebuilt 68 350 engine.
The engine has a milodon oil pan and an oil cooler, with filter approximately 6 quarts of oil. Eberything is new inside the engine and a machine shop did all machine work and put the short block together. The engine is in the car now.
This week I´v tried to prime the engine (counterclock wise). I get good oil pressure right away with the drill, around 45 psi. After a minute or two the drill starts smoking and I have stop and let it cool down. Been doing like this a couple of times and get no oil up to the rockers. Today after priming I saw some oil in the head on the driver side and was happy about it. Kept prime again but no more oil came up.
After this I decided to oil all the rockers and try to start the engine up. Started the engine 2 times for approximately 60 seconds both times. Engine run like a champ and sounded great, no strange noises at all. Kept it around 2000 rpm but still no oil from the rockers. After this I didn´t want to start it anymore.
So my questions are:
1. How long does it take to prime an olds engine with a drill? Is it common that the drill get overheated after a while?
2. If the machine shop has missed the oil galley plugs would I still have good oil pressure in the engine?
Really appreciate if someone have some advice regarding this. Tomorrow I´m gonna pull out the distributor again and try to prime it with a drill once more.
/Jon
The engine has a milodon oil pan and an oil cooler, with filter approximately 6 quarts of oil. Eberything is new inside the engine and a machine shop did all machine work and put the short block together. The engine is in the car now.
This week I´v tried to prime the engine (counterclock wise). I get good oil pressure right away with the drill, around 45 psi. After a minute or two the drill starts smoking and I have stop and let it cool down. Been doing like this a couple of times and get no oil up to the rockers. Today after priming I saw some oil in the head on the driver side and was happy about it. Kept prime again but no more oil came up.
After this I decided to oil all the rockers and try to start the engine up. Started the engine 2 times for approximately 60 seconds both times. Engine run like a champ and sounded great, no strange noises at all. Kept it around 2000 rpm but still no oil from the rockers. After this I didn´t want to start it anymore.
So my questions are:
1. How long does it take to prime an olds engine with a drill? Is it common that the drill get overheated after a while?
2. If the machine shop has missed the oil galley plugs would I still have good oil pressure in the engine?
Really appreciate if someone have some advice regarding this. Tomorrow I´m gonna pull out the distributor again and try to prime it with a drill once more.
/Jon
#4
Oil flow to the rockers requires time. The rest of the engine has oil long before the rockers. Highly viscous oil requires more time. Oil flow is controlled by a disc and the bottom of the push rod seat in the lifter. If you want more flow this has to be modified after disassembling the lifter. Smoke from the drill motor indicates an overload condition. Use a stronger drill motor or you will burn the winding.
#5
When I was younger I owned Chevys. They pump up really fast. Like immediately. Oil to the rockers, NOW. I have found that Olds motors are not like this at all. There is a long amount of time before you see oil coming down the rocker. IMO, don't worry about it unless it starts making noise. No noise, no problems. I had Chevys shooting oil onto the fenderwell. My Olds hardly puts out enough to oil the rockers. And that's at 2000 rpm. They just aren't great oil pumps. Anyone disagree?
#6
When I was younger I owned Chevys. They pump up really fast. Like immediately. Oil to the rockers, NOW. I have found that Olds motors are not like this at all. There is a long amount of time before you see oil coming down the rocker. IMO, don't worry about it unless it starts making noise. No noise, no problems. I had Chevys shooting oil onto the fenderwell. My Olds hardly puts out enough to oil the rockers. And that's at 2000 rpm. They just aren't great oil pumps. Anyone disagree?
#7
What weight oil are you using?, I'm inferring you are in a Scandanavian climate?. 5W30 will get round the engine quicker than say a 15W40. If it's cold then you need a thin oil.
Mechanical action from the lifters should help get oil to the rockers quicker than winding the oil pump with a drill. In normal driving you might not start the engine for a week, yet you don't have the valvetrain clattering for minutes before oil gets up there when you do.
Roger.
Mechanical action from the lifters should help get oil to the rockers quicker than winding the oil pump with a drill. In normal driving you might not start the engine for a week, yet you don't have the valvetrain clattering for minutes before oil gets up there when you do.
Roger.
#11
Are you sure?
If you pull out the lifter at the back right of the engine and hit that drill, it will shoot about 15 feet high, immediately. Put that one back, and pull out the back left lifter (last one on driver's side). My bet is that it will barely dribble out.
Last edited by Udaloy; January 7th, 2015 at 06:47 PM. Reason: added more specific info
#12
pulling lifters on an assembled engine is no small task
your engine is fine
I have never done more than a few seconds of priming, enough to chase the air out.
If you want to be extra sure, look in the dist'r hole while priming
1mm jet of oil on the drive rod= perfect
0 jet of oil = idiots put no-hole plug in
10mm jet= no plug at all, and probably no pressure either
your engine is fine
I have never done more than a few seconds of priming, enough to chase the air out.
If you want to be extra sure, look in the dist'r hole while priming
1mm jet of oil on the drive rod= perfect
0 jet of oil = idiots put no-hole plug in
10mm jet= no plug at all, and probably no pressure either
#13
Oil Problem
Boiling or abrading a block is not good enough, one must remove the oil galley plugs at each end of a block on both sides, brush them out and blast them clean at a car wash. that is the only reliable way to clean them. If this procedure is not followed, then a situation such as you relate may occur.
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