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Leaking oil pump??
- Thread starter Nelson
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Hap Waldrop
Yoda
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If the plate was designed to use the 1275 cover there a slightly recessed ring around the oil pump cover hole on the side of the plate facing the engine as 1275 oil pump covers are inserted from that side and RTVed into placed, where 948 covers are soldered on the flywheel side of the thinner 948 backplate. if the Datsun tranny cover was made for the 1275 cover then the 948 cover will have a bit of wiggle room when mounted on the inboard side, which is ok, as long as you get it postion correctly. The main issues here are to effectively cover the oil pump and make sure you clear the flywheel.
Bill can you elborate on this, do the Paul A plate have the recessed ring on the inboard side?
If so, I think this is the route I would take (mounting the cover form the inboard side, if it possible to just RTV the cover to the flywheel side of the plate and still have flywheel clearence, that somewhat alarms me because over time if the cover could just fall off and with the flywheel spinning and make somewhat of a big ole mess.
I think if this kit is continues to be made, then the oil pump cover needs to be adressesed in the instructions, sure for someone like mayself and others who have worked with many of these engines it seems very obvious that the oil pump has to be covered, but as this thread proves, new folks dealing with these engine may not see the obvious, because all this is new to them, hey we learn and thats part of the fun of it.
Bill can you elborate on this, do the Paul A plate have the recessed ring on the inboard side?
If so, I think this is the route I would take (mounting the cover form the inboard side, if it possible to just RTV the cover to the flywheel side of the plate and still have flywheel clearence, that somewhat alarms me because over time if the cover could just fall off and with the flywheel spinning and make somewhat of a big ole mess.
I think if this kit is continues to be made, then the oil pump cover needs to be adressesed in the instructions, sure for someone like mayself and others who have worked with many of these engines it seems very obvious that the oil pump has to be covered, but as this thread proves, new folks dealing with these engine may not see the obvious, because all this is new to them, hey we learn and thats part of the fun of it.
The backing plate does have the recess as Hap indicated-
this adapter requires the oilpump cover from a 1098/1275, the one from the 948 is too small to fit and won't seal.
Actually the instructions do cover this but it is hidden in the verbage pretty well and doesn't stand out- I will work on that.
BillM
this adapter requires the oilpump cover from a 1098/1275, the one from the 948 is too small to fit and won't seal.
Actually the instructions do cover this but it is hidden in the verbage pretty well and doesn't stand out- I will work on that.
BillM
OP
Nelson
Jedi Warrior
Offline
Today I was able to use my 948 pump cover after doing some modification. It was not deep enough to seat against the block because it rested against the three pump mounting bolts. We marked the locations of contact and hammered bumps into the cover. These gave clearance to allow the cover to seat against the block. The recess in the new plate was a little too shallow so we wound up using two gaskets and the Permatex and were able to get a good seal. Problem solved. Thanks Hap and Bill M.
Jim_Gruber
Yoda
Offline
Now get that puppy reinstalled and fired up and go drive. Glad to hear progress ever onward.