.sunlover Posted October 2, 2011 Report Share Posted October 2, 2011 oil pump is leaking at the pump gasket, not the mounting gasket, should I replace the gasket or just do the pump. It's a 2000 mile fresh rebuild, can't remember, but i'd guess I didn't replace the pump on the otherwise very complete rebuild. Quote Link to comment
Jester Posted October 2, 2011 Report Share Posted October 2, 2011 The L pumps are very good pumps. They really don't go bad unless they have had a ton of metal through them. If it's in good shape just put some fresh gaskets on it and call it good. If you feel the need for some extra pressure, I think the KA and the 280ZX AUTOMATIC pumps were higher pressure and a direct bolt on. I think this info is correct. I can't remember if the 280 pump was year specific or not. Can someone help me verify that? 1 Quote Link to comment
Sealik Posted October 2, 2011 Report Share Posted October 2, 2011 So...the gasket within the pump itself? Shouldn't be leaking unless it's been taken apart before. That gasket is very thin...and specific to that section of the pump, too thick and would change oil PSI? You can check the clearances in the pump when apart, tell you if it's worn and ready to replace. If replacing I would get a used KA (low miles) or a new Beck Arnley....which I just bought '80-'83 280zx turbo automatics Any KA24E (not DE) RWD motor as in a 240sx or D-21 Hardbody. All Z24i TBI Throttle Body Injection motor The '80-'82 Maxima LD28 Diesel motor. Stock pump can also be shimmed with a washer to increase running OP Thin washer inside....where the screwdriver is pointing 1 Quote Link to comment
Jester Posted October 2, 2011 Report Share Posted October 2, 2011 Just did some reading in my Honsowetz book. Good reading in the lubrication section. Quote Link to comment
datzenmike Posted October 2, 2011 Report Share Posted October 2, 2011 The L pumps are very good pumps. They really don't go bad unless they have had a ton of metal through them. If it's in good shape just put some fresh gaskets on it and call it good. If you feel the need for some extra pressure, I think the KA and the 280ZX AUTOMATIC pumps were higher pressure and a direct bolt on. I think this info is correct. I can't remember if the 280 pump was year specific or not. Can someone help me verify that? Good stuff but they aren't really higher pressure, they are higher volume. They have the same pressure relief spring rate for about 50 PSI or so. The advantage is that more volume will give better pressure at low speeds. Sounds contradictory but it does. At all times the mains and rods, the cam and oil squirters for the chain have oil flowing into, through, and out of like a giant leak. At low RPMs such as idle, the motor can only supply a small amount of oil and the 'leak' is so much that the actual pressure can only build to about 35 PSI. If the pump were to be larger the excess volume would back up and increase the pressure. So, on my tired old 300,000Km L20B the idle oil pressure with worn bearings when warmed up was 17 PSI. Normal running was still 45-50 but warm idle was 17. I installed a KA pump and the same warm idle jumped to 29 PSI. That's a lot of extra peace of mind when idling around in traffic or off road crawling. If you look closely you can see that the internal rotors on the KA pump are longer, about 14% longer. You cannot tell from the outside if a pump is a high volume unit or not. It has to be removed. You don't have to take apart but you do have to look down into the inlet port of the pump. The taller rotor is much easier to see on a high volume pump than the other style. The inlet hole is the pear shaped one in the picture. Regular volume oil pump. Rotors are down inside with the tops barely visible. High volume oil pump. Rotor top edge is plainly visible to the eye. All D-21 Hardbody Z24i, KA24E, and KA24DE motors have them. S13 240sx KA24Es (only) have them. 280zx turbo automatics w/ oil coolers had them. Maxima diesels had them 720 Z24i motors did not. The Hardbody motors are in the wrecking yards by the tens of thousands so get one. Even a used one will totally out flow a brand new L series pump, no problem. Offer the guy $10 for it and if he gets pissy about the price ask him if it seizes your motor is he going to replace it? That should get the price down. . 1 Quote Link to comment
.sunlover Posted October 2, 2011 Author Report Share Posted October 2, 2011 thanks alot :) ! That is a very thoroughly answered question, I fucking love this forum, used high flow it is! +1's all around Quote Link to comment
datzenmike Posted October 3, 2011 Report Share Posted October 3, 2011 Meh.... it was a slow morning and I had three coffeeeeeeees. Quote Link to comment
pocket rocket Posted October 5, 2011 Report Share Posted October 5, 2011 Hey Datzen Mike, I just looked up my parts database CD that one of my suppliers gives me (Precision Engine Parts). They list the; KA24E as having a Mellings #152 oil pump KA24DE as having Mellings #4592 oil pump Z24 as having Mellings #111 oil pump any idea as to which one is the most ideal for a direct replacement, higher volume oil pump, than that of a standard L series? Quote Link to comment
Sealik Posted October 5, 2011 Report Share Posted October 5, 2011 Hey Datzen Mike, I just looked up my parts database CD that one of my suppliers gives me (Precision Engine Parts). They list the; KA24E as having a Mellings #152 oil pump KA24DE as having Mellings #4592 oil pump Z24 as having Mellings #111 oil pump any idea as to which one is the most ideal for a direct replacement, higher volume oil pump, than that of a standard L series? Door No 1 ......as stated above in thread... :D Any KA24E (not DE) RWD motor as in a 240sx or D-21 Hardbody.... No KA24DE or Z24, Z22 Rockauto... BECK/ARNLEY Part # 0280352 Quote Link to comment
pocket rocket Posted October 5, 2011 Report Share Posted October 5, 2011 QUOTE from Datzen Mike's post All D-21 Hardbody Z24i, KA24E, and KA24DE motors have them. S13 240sx KA24Es (only) have them. 280zx turbo automatics w/ oil coolers had them. But they're different part numbers. On the database CD, there is a photo of the Z24 #111 & it looks similar , but they don't have a photo of the others. Quote Link to comment
pocket rocket Posted October 5, 2011 Report Share Posted October 5, 2011 Maybe the problem I have here is that we never had a 240SX in Australia. What is a D21 Hardbody? Navara pick-up maybe? Quote Link to comment
Sealik Posted October 5, 2011 Report Share Posted October 5, 2011 Maybe the problem I have here is that we never had a 240SX in Australia. What is a D21 Hardbody? Navara pick-up maybe? Ahhhhhh Australia...no Rockauto and or...thus the database :D Quote Link to comment
pocket rocket Posted October 5, 2011 Report Share Posted October 5, 2011 Mellings is a USA brand, isn't it? Quote Link to comment
datzenmike Posted October 5, 2011 Report Share Posted October 5, 2011 QUOTE from Datzen Mike's post All D-21 Hardbody Z24i, KA24E, and KA24DE motors have them. S13 240sx KA24Es (only) have them. 280zx turbo automatics w/ oil coolers had them. But they're different part numbers. On the database CD, there is a photo of the Z24 #111 & it looks similar , but they don't have a photo of the others. I also said: You cannot tell from the outside if a pump is a high volume unit or not. It has to be removed. You don't have to take apart but you do have to look down into the inlet port of the pump. The taller rotor is much easier to see on a high volume pump than the other style. The inlet hole is the pear shaped one in the picture. Regular volume oil pump. Rotors are down inside with the tops barely visible. High volume oil pump. Rotor top edge is plainly visible to the eye. Resized to 84% (was 800 x 600) - Click image to enlarge Yeah in Oz you still had L series motors in trucks where we got Z and KA motors. Here is a KA24DE from a '99 Fronteer and it has the high output oil pump on it... Notice how it looks just like an L series oil pump, even one from a '68 510??? Pocket rocket, I don't know what the trucks are down there. If you order a North American S13 (240sx) with the KA24E motor you will get the correct pump. Quote Link to comment
pocket rocket Posted October 5, 2011 Report Share Posted October 5, 2011 97-99 D21 Navara (pick-up truck) had a KA24E 97 onwards D22 Navara (pick-up truck) had KA24E 89-92 Pintara (sedan & wagon) had KA24E 97-99 Terrano R20 (I think is a van????) had a KA24E 86-92 D21 Navara (pick-up truck) had a Z24 86-92 Nomad (don't know what they are) had a Z24 86-92 Pathfinder (like a 4wd version of the Navara but as a wagon) had a Z24 87-93 Urvan (little 8 seater people mover bus style van) had a Z24 I know you said you can't tell from the outside, hence the reason why I didn't just go & buy one. I mentioned that it (Z24 pump) looked similar because at least that is a start. If it looked completely different, good chance it aint going to fit Quote Link to comment
pocket rocket Posted October 5, 2011 Report Share Posted October 5, 2011 Thanks for all your help. Maybe I'll try to find one on ebay (USA) Quote Link to comment
datzenmike Posted October 5, 2011 Report Share Posted October 5, 2011 Here all D21s with Z24i (that's a throttle body injection) got them too.The 720 Z24i did not. Quote Link to comment
pocket rocket Posted October 5, 2011 Report Share Posted October 5, 2011 Thanks mate. I just talked with the parts supplier. They said the Z24 (Mellings #111) is the high volume version, they looked back through some of their sales history & have supplied them before to a couple of guys that race "historic" class circuit racing 510s. Thanks for the help. Quote Link to comment
Sealik Posted October 5, 2011 Report Share Posted October 5, 2011 Melling # : M111 SHORT NOTES Application Notes : EXC. 720 Cross-ReferenceApplication Make Model Year Engine NISSAN/DATSUN 280ZX 1981 6Cyl 2753CC OHC NISSAN/DATSUN 280ZX 1982 6Cyl 2753CC OHC NISSAN/DATSUN 280ZX 1983 6Cyl 2753CC OHC NISSAN/DATSUN D21 1986 4Cyl 2389CC OHC NISSAN/DATSUN D21 1987 4Cyl 2389CC OHC NISSAN/DATSUN D21 1988 4Cyl 2389CC OHC NISSAN/DATSUN D21 1989 4Cyl 2389CC OHC NISSAN/DATSUN Pathfinder 1987 4Cyl 2389CC OHC NISSAN/DATSUN Van 1987 4Cyl 2389CC OHC NISSAN/DATSUN Van 1988 4Cyl 2389CC OHC Quote Link to comment
Kennyt Posted September 14, 2016 Report Share Posted September 14, 2016 Will the pump from a ka24e engine fit a z24? I am assuming if it will it will be better since it pumps at a higher volume. I dont like how long it takes for my oil light to turn off. Will this help? Quote Link to comment
Lockleaf Posted September 14, 2016 Report Share Posted September 14, 2016 Yes kae pump will fit and is higher volume. Most of us consider it an upgrade. Quote Link to comment
datzenmike Posted September 15, 2016 Report Share Posted September 15, 2016 No it won't shut of faster. Yes it pumps more oil per turn but the max pressure is about the same. What this will do is raise the oil pressure at idle and off idle where the pumps can't supply enough oil to replace what's bleeding out past the bearings. My tired L20B hot idle pressure was 17 PSI. With a KA pump and no other change it rose to 29 PSI. It still maxed at around 55. Now if your old pump is worn a different pump may help shut the light off sooner. What weight of oil are you using? I wouldn't run anything with a 10 in it. I run 15W40 Shell Rotella T. Quote Link to comment
Kennyt Posted September 15, 2016 Report Share Posted September 15, 2016 Been running rotella 10w-30. I will change to 15w-40 and see if any changes. Also will put in new pump for curiosity sake. Thanks all Quote Link to comment
datzenmike Posted September 15, 2016 Report Share Posted September 15, 2016 Do separately so you know which made any change. 1 Quote Link to comment
racerx Posted September 15, 2016 Report Share Posted September 15, 2016 Maybe I missed it but why is it better to run 15w-40, than 10-30 or 10-40 which is what my book says. Quote Link to comment
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