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Priming oil system on engine stand ?

11K views 17 replies 6 participants last post by  HP MACHINE  
#1 ·
Hello , I'm curious , is the IPR valve naturally open when no power is supplied ? I want to prime my oil system on the engine stand before
installing the glow plugs , which will ease up on the starter .
I figured this would be a lot easier outside the truck than trying to install the glow plugs and harnesses when it's in the truck .
Any special tricks ?

Thanks
 
#2 ·
Yes to IPR being not closed when unpowered. Applying 12V will close it. I have read that the power should not be left applied for long periods of time.
 
#4 ·
whats the advantage other than no glow plugs and a little easier on the starter ?
you are going to spin it up with the starter just like if it was in the truck not sure it's worth the effort I would pull the FICM relay and just do it in the truck

since your not really "priming" your just cranking to build pressure

priming would be circulating the oil without spinning the wear surfaces
 
#5 ·
I bought a pressure paint tank from Princess Auto. I used it to do the initial oil fill on an engine I just built for my Ex. Put the bulk of the oil in while it was still on the stand. I had the turbo mounted to the engine and pumped in oil to the LP side through the pressure switch hole. When I had put in about half the oil, I switched to the HP side. I removed the plugs from the rails and pumped in oil until the air bubbles stopped and I had a solid stream of oil. I had HP oil within seconds of cranking.

If you are near Toronto. You are more than welcome to borrow it if you want. It is at the bottom of the 427 at the wife's office. I will be doing a Sudbury and Owen Sound road trip in the next week or two.

This method is truly priming the system and a better way to go in my opinion if you have a motor on a stand which is freshly built.


 
#7 ·
Thanks. I thought so!

I saw priming tanks in the Goodson catalog, which I would have never known about if it weren't for Torens recommendation of the Super Scrapers. They were not cheap and I thought I would make something up as the whole priming idea seemed like a great one. Especially on a motor that is known to take a looooong time to fire when the oil system is dry.

When I was doing my motor, I saw that tank on sale for around $100. It worked like a charm after rigging up some adaptors out of old fuel lines and fittings.
 
#8 ·
Thanks for the offer , but I'm far enough away from that area that it wouldn't be practical . It is much appreciated . I have pump tanks etc.
that we use for pumping oil(s) into gearcases . The idea that you suggested is a really practical one .
On a side note , the plugs in the rails that you removed , are they the small ones I spotted at the upper side in the middle ( they look
like a button head screw ) ? I don't see them mentioned in the service manual or in any searches , so I assumed they were a production
feature used by International but not meant to be removed .

Thanks
 
#11 ·
A couple of months ago when I got this 6.4 going I primed mine this same way only in the truck. I assembled the short block and installed it in the truck then built the rest of the motor in frame, as the 6.4 requires 275-300ftlbs of torque depending on stud type. Anyway.....I left the GP's out and using a jump pack to the positive terminal of the battery and neg to the motor supplied 12v to the signal wire and cranked it over till oil came out the rocker arms.

ALL OTHER ELECTRICAL CONNECTIONS WERE REMOVED!!! Only power to the starter. Worked like a charm! I did look into the Goodson primers tho if I am going to build more of these motors....
 
#12 ·
Goodson Pre Lube Tank $279.99
GOODSON : Engine Assembly Tools : Engine Pre-Lube Tank : EPL-120
Add shipping unless you happen to live near them.

Harbour Freight version of tank I bought $99.99
Paint Pressure Tank - 2-1/2 Gallon
Probably don't need shipping as there are Harbour Freight stores everywhere.

Paint tank much easier to clean out. Handful of adaptors, which you probably would need with the Goodson tank anyway, and you are good to go.

Now the Goodson Super Scrapers, well that's another story!
 
#14 ·
A quick update.

To anyone thinking about using some form of pressure tank to prime an engine, I can now say that it is totally worth it on a fresh build.

I just built another engine for someone and put the initial oil fill in like I mentioned a few posts back in this thread.

Once the motor was in the truck, I pulled the glow plug module (to keep battery drain low) and the FICM relay (to keep injectors from firing). Watched ICP with my AE and saw well north of 500 psi during the first crank. Want to say around 900. Had the glow plugs, and more importantly the injectors, been enabled it would have literally fired up on the first crank.

Just for reference, I personally don't hold the starter on for more than about three seconds.

Plugged the glow plug module and FICM relay back in and had a purring engine on the second crank.

All I can say is that it was around $100 well spent.
 
#17 ·
I always fill the engine up via the oil filter and pull the standpipe out. 30 second crank bursts. I find it's harder to purge the air out of the fuel on startup than the oil. Sometimes it is not an issue at all, but others it just fights really hard. I like this idea though. Just for the ease of startup. Good assembly lube there's nothing to worry about, but waiting 2 mins between cranking is like waiting for the microwave when you just had a motor out or heads off and the anticipation of it running kills ya.
 
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