blue oil pump o ring
Thread Starter
Burning Brakes
Joined: Jun 2006
Posts: 933
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From: St. Paul MN
blue oil pump o ring
Has anyone used the blue o ring? I'm replacing the oil pump on my 98 vette ls1 with the ls2 unit. The ls2 unit arrived with a blue o ring (the old one was gray (maybe brown). The blue o ring is noticably larger in diameter than the old o-ring. Using the blue o ring the tube doesn't seat into the pump as easily as it does with the old o ring. In fact it doesn't really seat at all with out the bolt in there to hold it flush. Has anybody run into this? Should I use the old o ring? Will there be a problem using the old o ring with the new ls2 oil pump?
Thread Starter
Burning Brakes
Joined: Jun 2006
Posts: 933
Likes: 0
From: St. Paul MN
Does anybody know if the LS2 pump pickup tube mounting specs are different than the LS1? I'm wondering if this might be a case of poor quality control (here use this blue oring...should work). The blue o-ring doesn't want to seat easily in the pump. If I place it into the oil pump with the pump out of the car it wants to pop out whereas the old one does not? Has anybody used this blue o ring?
Thread Starter
Burning Brakes
Joined: Jun 2006
Posts: 933
Likes: 0
From: St. Paul MN
Does anybody know if its safe to use the original 98 LS1 gray(might be brown) o-ring with the LS2 pump? I do not like the way the blue o ring that cam with it seats. The ramifications of a wrong decision here are HUGE as I risk engine damage and many hours of work if it fails to generate oil pressure either because the o-ring is too small (the original ls1 o - ring) or the pick up tube does not seat correctly (with the new blue o ring). Somebody with experience with this please help!!!!
Pro
Joined: Aug 2006
Posts: 565
Likes: 2
From: Chattanooga TN
The thicker o-ring was done in order to prevent pinching the o-ring when installing the oil pickup tube. If that o-ring gets pinched, you'll have low oil pressure problems.
I installed a QTP oil pump when I did heads/cam recently. The pump came with two o-rings, but I had ordered the blue o-ring from GM as well. The pump came with an o-ring that kept the pickup tube from going into the pump. It was so tight that it wouldn't engage to the point that we could even get the bolt started. We used the blue o-ring and there have been no issues thus far.
If you reuse the gray o-ring you run the risk of pinching it since it's so thin. Dumb question here...have you put oil on the blue o-ring before trying to put the pickup tube into the pump?
I installed a QTP oil pump when I did heads/cam recently. The pump came with two o-rings, but I had ordered the blue o-ring from GM as well. The pump came with an o-ring that kept the pickup tube from going into the pump. It was so tight that it wouldn't engage to the point that we could even get the bolt started. We used the blue o-ring and there have been no issues thus far.
If you reuse the gray o-ring you run the risk of pinching it since it's so thin. Dumb question here...have you put oil on the blue o-ring before trying to put the pickup tube into the pump?
Thread Starter
Burning Brakes
Joined: Jun 2006
Posts: 933
Likes: 0
From: St. Paul MN
The thicker o-ring was done in order to prevent pinching the o-ring when installing the oil pickup tube. If that o-ring gets pinched, you'll have low oil pressure problems.
I installed a QTP oil pump when I did heads/cam recently. The pump came with two o-rings, but I had ordered the blue o-ring from GM as well. The pump came with an o-ring that kept the pickup tube from going into the pump. It was so tight that it wouldn't engage to the point that we could even get the bolt started. We used the blue o-ring and there have been no issues thus far.
If you reuse the gray o-ring you run the risk of pinching it since it's so thin. Dumb question here...have you put oil on the blue o-ring before trying to put the pickup tube into the pump?
I installed a QTP oil pump when I did heads/cam recently. The pump came with two o-rings, but I had ordered the blue o-ring from GM as well. The pump came with an o-ring that kept the pickup tube from going into the pump. It was so tight that it wouldn't engage to the point that we could even get the bolt started. We used the blue o-ring and there have been no issues thus far.
If you reuse the gray o-ring you run the risk of pinching it since it's so thin. Dumb question here...have you put oil on the blue o-ring before trying to put the pickup tube into the pump?
