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> The joy was short lived...got it working, Oil pressure = 60 but have leak
DavidSweden
post Apr 26 2015, 11:03 AM
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Well as the title says is all gone tits up.
I started my rebuilt engine yesterday and broke in the cam, today was supposed to be the first drive. I decided to check the actual oil pressure so I pulled the pressure switch and connected my gauge. There was no pressure even at 2k rpm.

The pump is working but there is no pressure. Obviously the oil must be going somewhere, if the high pressure relief plunger is stuck open would this explain what's happening?

Appreciate some help
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Phoenix914
post May 18 2015, 10:45 AM
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So, what was the problem? Do you think there was any damage done, or still not sure?
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r_towle
post May 18 2015, 11:05 AM
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QUOTE(Phoenix914 @ May 18 2015, 12:45 PM) *

So, what was the problem? Do you think there was any damage done, or still not sure?

seriously, what was the problem?
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DavidSweden
post May 18 2015, 03:19 PM
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QUOTE(r_towle @ May 18 2015, 09:05 AM) *

QUOTE(Phoenix914 @ May 18 2015, 12:45 PM) *

So, what was the problem? Do you think there was any damage done, or still not sure?

seriously, what was the problem?

Well I made a major mistake while pulling the oil gallery plugs. just before I was about to drill a hole in one of the plugs the phone rang and my wife started going on about what I was going to cook for dinner etc. After I got off the phone I suffered a complete meltdown in concentration and drilled into the case in the wrong place (entirely my fault). I drilled one of the plugs located on the side of the case by the passage for the oil relief piston. I realised the mistake immediately although I was not aware at that point of the consequences. To cut a long story short I drilled out the case threaded the hole and inserted a metal plug. As the relief piston was not installed I did not realize that the plug was too long and stopped the piston from seating in the closed position.
(IMG:http://www.914world.com/bbs2/uploads_offsite/i1300.photobucket.com-17452-1431983973.1.jpg)
This picture was taken after I had removed the engine to find the cause of the problem, the oil relief piston is clearly visible. Yes I do feel pretty stupid but I guess shit happens.

I installed a shorter plug so the piston is now free to travel. The engine fires up no problem and as I said I have 60 psi at cold idle dropping to 20 when warm. I just hope the cam and bearings are ok. I will take the car for a drive during the week and see how it feels. During the rebuild the flywheel seal did not go in straight so I tapped on the other side and got it square (I thought). I now have a steady drip from the observation slot under the fly wheel.
I plan to replace the seal if the engine runs ok. I will gladly take advice regarding the correct procure for installing the seal so I get it right this time
The engine build has been a painful as well as educational experience....I guess you would call it learning by doing. Hopefully my next build will be better.

And thanks to everyone who has taken the time to help me out, I do appreciate it.
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Posts in this topic
DavidSweden   The joy was short lived...got it working   Apr 26 2015, 11:03 AM
stugray   Stupid questions first: You DID put the oil in? ( ...   Apr 26 2015, 11:10 AM
DavidSweden   Stupid questions first: You DID put the oil in? (...   Apr 26 2015, 11:14 AM
ConeDodger   Pretty sure you didn't run the cam in with no ...   Apr 26 2015, 12:03 PM
DavidSweden   Pretty sure you didn't run the cam in with no...   Apr 26 2015, 12:34 PM
stugray   The oil follows this path: Oil pickup into pump, ...   Apr 26 2015, 12:42 PM
DavidSweden   The oil follows this path: Oil pickup into pump,...   Apr 26 2015, 12:45 PM
stugray   Then the only explanations can be: A - Oil pump n...   Apr 26 2015, 12:55 PM
DavidSweden   Then the only explanations can be: A - Oil pump ...   Apr 26 2015, 01:05 PM
The Cabinetmaker   Stock pressure sensor ? An aftermarket gauge may n...   Apr 26 2015, 01:52 PM
DavidSweden   Stock pressure sensor ? An aftermarket gauge may ...   Apr 26 2015, 02:11 PM
McMark   Im still liking the oil pressure piston for this.   Apr 26 2015, 02:23 PM
DavidSweden   Im still liking the oil pressure piston for this....   Apr 26 2015, 02:49 PM
DavidSweden   Im still liking the oil pressure piston for this....   Apr 30 2015, 10:34 AM
Jeff Bowlsby   Don't these engines have ridiculously low oil ...   Apr 26 2015, 02:51 PM
DavidSweden   Don't these engines have ridiculously low oil...   Apr 26 2015, 03:04 PM
toon1   Don't these engines have ridiculously low oil...   Apr 30 2015, 11:52 AM
r3dplanet   Snap a photo of that piston? I think there are two...   Apr 26 2015, 02:52 PM
DavidSweden   Snap a photo of that piston? I think there are tw...   Apr 26 2015, 03:09 PM
stugray   I get >60 PSI at startup with 20w50. After 20 ...   Apr 30 2015, 01:01 PM
DavidSweden   I get >60 PSI at startup with 20w50. After 20...   Apr 30 2015, 01:06 PM
stugray   Is that with the stock oil pump? I am honestly...   Apr 30 2015, 01:18 PM
Java2570   I get >60 PSI at startup with 20w50. After 20...   Apr 30 2015, 01:14 PM
stugray   I get >60 PSI at startup with 20w50. After 2...   May 1 2015, 08:56 AM
jsaum   I would drain the oil and check for metal flakes j...   May 1 2015, 08:31 AM
DavidSweden   I would drain the oil and check for metal flakes ...   May 1 2015, 11:38 AM
stugray   I would drain the oil and check for metal flakes...   May 1 2015, 01:14 PM
r_towle   when you built the motor, did you keep turning the...   May 1 2015, 01:22 PM
DavidSweden   when you built the motor, did you keep turning th...   May 1 2015, 01:30 PM
Java2570   Is it possible the pressure relief valve got stuck...   May 1 2015, 01:29 PM
stugray   I thought you's get the hint from the :shades...   May 1 2015, 03:24 PM
DavidSweden   I thought you's get the hint from the :shade...   May 1 2015, 03:51 PM
DavidSweden   I thought you's get the hint from the :shade...   May 4 2015, 01:18 PM
PotterPorsche   What about removing all the excess oil lines. Like...   May 1 2015, 09:07 PM
stugray   What about removing all the excess oil lines. Lik...   May 1 2015, 10:14 PM
stugray   You can inspect the cam without splitting the case...   May 4 2015, 01:29 PM
DavidSweden   You can inspect the cam without splitting the cas...   May 4 2015, 01:43 PM
DavidSweden   You can inspect the cam without splitting the ca...   May 18 2015, 10:13 AM
Phoenix914   So, what was the problem? Do you think there was ...   May 18 2015, 10:45 AM
r_towle   So, what was the problem? Do you think there was...   May 18 2015, 11:05 AM
DavidSweden   So, what was the problem? Do you think there wa...   May 18 2015, 03:19 PM
rjames   Yup- gearbox is fairly easy to remove by itself. P...   May 18 2015, 10:45 AM
DavidSweden   Yup- gearbox is fairly easy to remove by itself. ...   May 18 2015, 10:57 AM
r_towle   Thank you, it's always good to learn something...   May 18 2015, 07:15 PM
Jmkorfha   Back in 1982 i just got done with a complete rebui...   May 19 2015, 06:04 PM
DavidSweden   Back in 1982 i just got done with a complete rebu...   May 20 2015, 08:56 AM
r_towle   good luck, glad you found it. And thank you for s...   May 20 2015, 11:58 AM


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