Alkorahil Posted April 28, 2009 Share Posted April 28, 2009 Here are the pump numbers and supercessiosn for the 300zx, hardbody and Pathfinder. I didnt bother with the Maxima and Quest. Part number might be stamped on the old water pump. Z31 300 ZX V6 MANUFACTURE DATE 07/83 TO 05/87 21010-02P25 21010-02P26 21010-02P27 ALL DEFAULT TO 21010-02P85 Z32 300 ZX V6 MANUFACTURE DATE 02/89-08/96 B1010-22P27 PATHFINDER WD-21 V6 MANUFACTURE DATE 07/86-08/89 21010-12G25 AND 2101012G26 WHICH BOTH DEFAULT TO 21010-12G28 MANUFACTURE DATE 08/89 TO PRODUCTION END 21010-12G28 D21 & D21U HARDBODY 2WD V6 MANUFACTURE DATE 11/85 TO 07/93 21010-02P27 MANUFACTURE DATE 07/93 TO 01/96 21010-02P85 HARDBODY 4WD V6 MANUFACTURE DATE 11/85 TO 01/96 21010-12G28 Link to comment Share on other sites More sharing options...
k9sar Posted April 28, 2009 Share Posted April 28, 2009 I'm still not convinced that the previous owner put the wrong water pump on the thing. You stated that the pump listed (witht he wings) is wrong due to the height. I do not doubt that the height is different but I am thinking that the one listed (with the wings) is tall enough. Did you happen to stry to sit the water pump in place and see where the pulley ends up? Would ti hit anything or are you just going by the difference in height? It could also be that the previous owner put the v-belts on incorrectly due to the alignment with the different water pump. That seems much more likely (to me) than an engine swap with a non-pathy engine. Link to comment Share on other sites More sharing options...
unccpathfinder Posted April 28, 2009 Share Posted April 28, 2009 (edited) That seems much more likely (to me) than an engine swap with a non-pathy engine. I'd agree but either way if its a pathy engine or not the block is the same an the HB 2wd pump should work fine...I know the car WP wouldnt work with my pulley and would hit the TB cover...if the height of the pump is 1" longer but can install without the fan hitting the radiator or anything else and it allows the belts to line up with the crank pulley then you're golden Edited April 28, 2009 by unccpathfinder Link to comment Share on other sites More sharing options...
k9sar Posted April 28, 2009 Share Posted April 28, 2009 good point. here's an idea.... Replace the engine. Link to comment Share on other sites More sharing options...
unccpathfinder Posted April 28, 2009 Share Posted April 28, 2009 here's an idea.... Replace the engine. smile.gif that would solve the problem of not knowing what it was...or throw whatever water pump on there that will align the belts and do the electric fan mod and not worry about if the fan is going to hit anything Link to comment Share on other sites More sharing options...
IBT Posted April 29, 2009 Author Share Posted April 29, 2009 that would solve the problem of not knowing what it was...or throw whatever water pump on there that will align the belts and do the electric fan mod and not worry about if the fan is going to hit anything Alright all check this out. Sorry by the way for not keeping on on your comments but I have not been able to get into this string until now. WTF....I just bought the exact waterpump that was on my wifes 88 pathy from Napa they had to order it. IT WAS A H20 PUMP FROM A 95 INFINITI J31! No fricken clue a Infiniti was even in the mix. But I have to thank you ALL so much for your pictures, ideas and help with this. You would think my first pathfinder and all this drama and I would be over nissan but just the opposite these first gen pathys are at the Very top of my list when it comes to 4x4's so I will keep you all updated on the fix. Sounds like I have my weekend in the garage! Link to comment Share on other sites More sharing options...
unccpathfinder Posted April 30, 2009 Share Posted April 30, 2009 yea infiniti is the same as nissan...write that down and keep it fresh in your mind b/c you may have some issues later on that will point to that same engine...glad you got it worked out Link to comment Share on other sites More sharing options...
IBT Posted May 22, 2009 Author Share Posted May 22, 2009 hmmm...going to go check the block i have on the shelf...it looks like to me someone was lazy with the last timing belt/wp change and put the wrong one on there...be back in a few Well long story short, pathy is up and running.... ya fricken who... But I think the above comment was exactly right Uncc! Turns out the old water pump I took off had a longer snout then it should have. And after getting a replacement water pump from a 1995 infiniti and bolting it all together belts would not line up and it was just way too long. So ya they put the wrong water pump on to begin with. Crazy but the 300zx I think? I have looked at so many water pumps over the last month, but I think the 300zx water pump bolted right on and the timing belt improved the Idle and everything is super quiet and smooth. So again thanks to all of you and Uncc you the man...you all were a huge help... Link to comment Share on other sites More sharing options...
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