no oil pressure in crate motor
#1
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Hey all
I bought a crate motor for a project about 2 years ago and am just getting it fired up. it was a factory replacement that only came up to 10 psi when installed and removed and sold to me. I opened it up and it looked good, so I replaced the oil pump and went to put the pan back on and the pick up tube was hitting the bottom of the pan, so I gave it 5/8 clearance and reassembled it thinking that I had fixxed the problem. It fired yesterday and no oil pressure. Any ideas./ I have a lot of money in this motor for it not to go and am trying to make a show. It has pulled oil into the filter and seems to have weak pressure but not much\
thanks
I bought a crate motor for a project about 2 years ago and am just getting it fired up. it was a factory replacement that only came up to 10 psi when installed and removed and sold to me. I opened it up and it looked good, so I replaced the oil pump and went to put the pan back on and the pick up tube was hitting the bottom of the pan, so I gave it 5/8 clearance and reassembled it thinking that I had fixxed the problem. It fired yesterday and no oil pressure. Any ideas./ I have a lot of money in this motor for it not to go and am trying to make a show. It has pulled oil into the filter and seems to have weak pressure but not much\
thanks
#2
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here's some things i forgot to put in my first LS1 motor build that prevented me from getting oil pressure. might want to look for those.
the rear oil galley plug
![](http://www.stealthram.com/familypics/formula/ls6motor/rearoilgalleyplug.jpg)
which goes here. this required me removing the trans again.
![](http://www.stealthram.com/familypics/formula/ls6motor/rearoilgalleyplughanging.jpg)
goes in like this
![](http://www.stealthram.com/familypics/formula/ls6motor/rearoilgalleypluginsert.jpg)
then there's a front 15.68mm plug that goes in the front side of the oil galley.
the rear oil galley plug
![](http://www.stealthram.com/familypics/formula/ls6motor/rearoilgalleyplug.jpg)
which goes here. this required me removing the trans again.
![](http://www.stealthram.com/familypics/formula/ls6motor/rearoilgalleyplughanging.jpg)
goes in like this
![](http://www.stealthram.com/familypics/formula/ls6motor/rearoilgalleypluginsert.jpg)
then there's a front 15.68mm plug that goes in the front side of the oil galley.
![](http://www.stealthram.com/familypics/formula/ls6motor/frontoilgalleyplug.jpg)
#7
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thanks for your help I have 4 years in this project and have about had it. I had a great L-88 to put in it and got talked into this. It has been a nightmare, but I think that when it is all said and done I will be happy with it. I have done a Grand sport replica with this setup. Thanks for your help and have a great year
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#9
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the crank looked good as did the cam bearings. I was hoping that it was not a casting issue. I guess the worst thing would be having to go to a stroker ls2 or a mallet motor. I am over $100k on this thing so nothing will stop me now
#10
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Originally Posted by 64grandsport
the crank looked good as did the cam bearings. I was hoping that it was not a casting issue. I guess the worst thing would be having to go to a stroker ls2 or a mallet motor. I am over $100k on this thing so nothing will stop me now
#11
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How about the O-ring on the pickup tube... try replacing it and be sure it doesn't get pinched while securing the pickup tube.
I had problem with my used LS1 that was sitting around for about 9-10 months and after replacing the O-ring and oil pump with a LS6 pump.. all returned to normal (if not more pressure now)
I had problem with my used LS1 that was sitting around for about 9-10 months and after replacing the O-ring and oil pump with a LS6 pump.. all returned to normal (if not more pressure now)