The joy was short lived...got it working, Oil pressure = 60 but have leak |
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The joy was short lived...got it working, Oil pressure = 60 but have leak |
DavidSweden |
Apr 26 2015, 11:03 AM
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#1
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Member Group: Members Posts: 479 Joined: 8-June 14 From: Sweden Member No.: 17,452 Region Association: Scandinavia |
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 |
stugray |
May 1 2015, 03:24 PM
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#2
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Advanced Member Group: Members Posts: 3,825 Joined: 17-September 09 From: Longmont, CO Member No.: 10,819 Region Association: None |
I thought you's get the hint from the (IMG:style_emoticons/default/shades.gif)
What I believe happened (but hope not) is that the pressure relief piston froze during your 20 minute cam breakin period (at the 1 minute point or the 19 minute point? (IMG:style_emoticons/default/confused24.gif) ) Then the bearings took the brunt of the abuse and are already toast. This would look just like a very old tired motor with respect to oil pressure. As the bearings wear, the clearances open up reducing overall system oil pressure. I just moved the "Racer Chris oil pressure relief valve upgrade" up on my list of next things to buy. http://www.914world.com/bbs2/index.php?showtopic=236704 |
DavidSweden |
May 4 2015, 01:18 PM
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#3
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Member Group: Members Posts: 479 Joined: 8-June 14 From: Sweden Member No.: 17,452 Region Association: Scandinavia |
I thought you's get the hint from the (IMG:style_emoticons/default/shades.gif) What I believe happened (but hope not) is that the pressure relief piston froze during your 20 minute cam breakin period (at the 1 minute point or the 19 minute point? (IMG:style_emoticons/default/confused24.gif) ) Then the bearings took the brunt of the abuse and are already toast. This would look just like a very old tired motor with respect to oil pressure. As the bearings wear, the clearances open up reducing overall system oil pressure. I just moved the "Racer Chris oil pressure relief valve upgrade" up on my list of next things to buy. http://www.914world.com/bbs2/index.php?showtopic=236704 It was a bitter decision... The engine is out and I have begun the tear down. There was oil in the pump and it seemed to be ok, The cooler had some oil in it but I guess most it drained out when I emptied the sump. I had a good look at the pressure piston bore and noticed it had what looks like a score in it I guess thats where the piston hung itself. I remember thinking that the spring needed a lot of compression during installation. Next step open the case and look at the bearings. All that work gone up in smoke it just sucks (IMG:http://www.914world.com/bbs2/uploads_offsite/i1300.photobucket.com-17452-1430767101.1.jpg) |
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