lifter issue and rock arm registration

[ste80]

Pull the spark plugs out and spin it over with starter (or pull distributor and use an oil priming adapter). Oil pressure should build pretty quickly and pump up the lifters. If pressure doesn't build up, there are some other problems there.

Aint rocket science.

thanks, i will try first with the pump, in case i will do with the starter motor, anyway i want to check the compression so i will run the motor without the spark plugs

tks

 

[ste80]

Good afternoon guys. Finally back after long busines trip and i could spent some time on motor.
First i did a carburator overhauling





Than back to motor, i used an old distributor to make oil circulate on the motor. Lifter become harder but not that much.
I rotated with starter motor. I had some oil coming out only in 3 sruds on rigjt side and 3 on left side)
I checked compression and 4 cilinders are 11.5 bar and 2 cilinders 12 bar

I noted one strange things.. when i'm rotating the shaft for some time and i leave motor in rest after some minutes i heard a clock from the lifters strange noise.
T i decided to give a run without water just to see that everithing is running fine.
Motor switch on after 1/2 revolution and sound is very nice but still rocket arm in rest position ( for example in stroke position) can be moved by hand.
See the video of first startup of ever

Please do not see the mess i had to move everithing there before departure so it is really a mess

it was on only for few secons still no oil on roket arms. Check pressure with milliometer on pressure gauge and i had 243 ohm with motor in hold (as per manual ok) and 104 ohm after switch on in idfle situation (that should be 40psi as per manual)
Then when i stopped i check again the valves lifter, they can not be pushed but in the valves that are not in working condiotions i can srill move them
Is it normal? Maybe i didn't run too much.

Whai i should do? I do not have lifter noise or other, now next step is complete motor assembling put the new riser and switch on water (this are the old used only for this test)

Thanks

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[04fxdwgi25]

The rockers sliding back and forth when valve is in the closed position is perfectly normal since there is very little tension on them like that.

There should be oil on the rockers after a few seconds of running / building oil pressure. I suggest putting a mechanical gauge on the the same spot the oil pressure sender is and get a reading. The 40-45 PSI pressure is what it should read over 2000 RPM. Until getting a true PSI reading, everything is just guessing.

 

[ste80]

The rockers sliding back and forth when valve is in the closed position is perfectly normal since there is very little tension on them like that.

Thanks so much i was really worry about it. one more things,
How long it will take to the oil to come out from rocket studs? Rotating with starter motor and no spark plugs only 3+3 were leaking oil. Now just few second on none of them . But pressure should be ok
Studs perfectelly cleaned and holes free

 

[04fxdwgi25]

The oil pressure should be 45 psi at over 2000 RPM. At idle, I have some worn engines with 25 PSI (or lower) at idle and still run great. It just means there is some bearing wear.

The oil should be squirting out the little hole in the rocker where the push rod is. Oil is fed up through the pushrod from the lifter.

Put a mechanical pressure gauge in where the oil sender is and get a true pressure reading. Until that is done, everything discussed here is nothing but guessing.

My 454 Mag (7.4l) gets 42-45 psi at idle or at speed hot or cold, but the engine is in superb condition.

PS: don't run for very long with no coolant / water in the engine.

 

[ste80]

The oil pressure should be 45 psi at over 2000 RPM. At idle, I have some worn engines with 25 PSI (or lower) at idle and still run great. It just means there is some bearing wear.

The oil should be squirting out the little hole in the rocker where the push rod is. Oil is fed up through the pushrod from the lifter.

Put a mechanical pressure gauge in where the oil sender is and get a true pressure reading. Until that is done, everything discussed here is nothing but guessing.

My 454 Mag (7.4l) gets 42-45 psi at idle or at speed hot or cold, but the engine is in superb condition.

PS: don't run for very long with no coolant / water in the engine.

Thanks, here bearing are all new
Cams and shaft diameter checked and in tollerance pump overhouled, as mention above i just check with multimeter because i didn't have the gauge (i will buy one ) and with motor off i had 243 as per manual, afyer switch on at iddle 104 ohm that as per manual should be 40 psi.
I will xheck with gauge as well

 

[alldodge]

I think your fine. Once running for a few minutes oil will show up

 

[Lou C]

Did you blow compressed air through each pushrod? I might crank it over with the ignition disabled till you see oil reaching all 12 rocker arms…just crank it for like 10 sec, then let the starter cool, repeat etc.

 

[04fxdwgi25]

Thanks, here bearing are all new
Cams and shaft diameter checked and in tollerance pump overhouled, as mention above i just check with multimeter because i didn't have the gauge (i will buy one ) and with motor off i had 243 as per manual, afyer switch on at iddle 104 ohm that as per manual should be 40 psi.
I will xheck with gauge as well

You should be OK, then, with the resistance readings on the hand held meter.

 

[ste80]

I think your fine. Once running for a few minutes oil will show up

thanks. i will go ahead then with final assembling and water connection ( like this i didn't run more than 20 sec.
thanks

 

[ste80]

Did you blow compressed air through each pushrod? I might crank it over with the ignition disabled till you see oil reaching all 12 rocker arms…just crank it for like 10 sec, then let the starter cool, repeat etc.

hi; tks
yes i did, i cleaned in ultrasonic device, then i blow inside with compressed air and then i visual inspected them vs light to see if holes were totally free.

s

 

[ste80]

You should be OK, then, with the resistance readings on the hand held meter.

thanks, i will try also with gauge if i can find one in the shop. i think thread is 1/8 npt. i will check if i will find

 

[ste80]

You should be OK, then, with the resistance readings on the hand held meter.

Now i check with gouge .at iddle speed 3,5 bar (50 psi)

 

[04fxdwgi25]

Great. Now you get it all back together and run it like you stole it.

 

[ste80]

Great. Now you get it all back together and run it like you stole it.

How long i can run since when i seE all rocket split oil? There is any risk if it will take some minutes?
Thanks again

 

[04fxdwgi25]

If you didn't clean out the pushrods, all bets off, but they may clean out eventually. That oil is basically there to lube the pushrod to rocker point of contact and the rocker arm fulcrum under the rocker arm stud/nut.. should be spitting out the holes if everything was properly cleaned.

If valve covers are off, squirt some on oil on the rocker arms to keep oiled.

If you don't have water connected, I wouldn't run longer than 20-30 seconds. Exhaust parts will get hot....

 

[ste80]

If you didn't clean out the pushrods, all bets off, but they may clean out eventually. That oil is basically there to lube the pushrod to rocker point of contact and the rocker arm fulcrum under the rocker arm stud/nut.. should be spitting out the holes if everything was properly cleaned.

If valve covers are off, squirt some on oil on the rocker arms to keep oiled.

If you don't have water connected, I wouldn't run longer than 20-30 seconds. Exhaust parts will get hot....

Thanks. Push road were cleaned first in ultrasonic device, then i bloww in the holes with air compressor then i check against light to see that all holes were free.

Without water i jyst run the time of above video (so 10 sec more or less) just to see that it was running. Now water is connected, just waiting for exoust to be connected and next startup will be with water for sure . I was meaning how long without oil coming out from push road (no without water)
Tks

 

[04fxdwgi25]

Thanks. Push road were cleaned first in ultrasonic device, then i bloww in the holes with air compressor then i check against light to see that all holes were free.

Without water i jyst run the time of above video (so 10 sec more or less) just to see that it was running. Now water is connected, just waiting for exoust to be connected and next startup will be with water for sure . I was meaning how long without oil coming out from push road (no without water)
Tks

May take more than the 10 seconds to get oil thru all of them. Squirting the oil on the rockers will assist in the lubrication until it feeds properly on it's own.

 

[ste80]

May take more than the 10 seconds to get oil thru all of them. Squirting the oil on the rockers will assist in the lubrication until it feeds properly on it's own.

Thanks. Now motor is ready. I bought new riser, manifold were good so i will just machine the surface to make them perfectelly flat and remove the damage and than next week when ready i will switch on properly.
Looking forward to do so

 

[ste80]

Yesterday night i was qble to switch on the water and run the motor for longher time.
It took more or less 3 minutes before i had oil in all 12 studs, but now fortunatelly everithing seems to run very well. I will test again in this days to perform final adjustment (timming )