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09-20-2014, 11:03 AM | #1 |
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Mellings M15 Hi Volume Pump
I have a new USA made (marked 1999) Mellings M15 high volume oil pump which I just acquired in a batch of parts.
I've read & heard pros and cons. What's your opinion, should I keep it? Mostly I will run street engines though may build a big bore stroker someday. Thanks Paul J. |
09-20-2014, 03:36 PM | #2 |
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Re: Mellings M15 Hi Volume Pump
Ditch it.
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09-20-2014, 08:45 PM | #3 |
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Re: Mellings M15 Hi Volume Pump
The only thing that pump is good is a worn out engine or a full race engine with extra bearing clearance. Walt
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09-20-2014, 09:23 PM | #4 |
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Re: Mellings M15 Hi Volume Pump
We don't even use them in race engines any more.
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09-21-2014, 06:05 AM | #5 |
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Re: Mellings M15 Hi Volume Pump
I'm installing one in my V12. I think it would be overkill in a V 8. And it might be in my V12 also,we shall see.
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09-21-2014, 06:21 AM | #6 |
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Re: Mellings M15 Hi Volume Pump
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09-21-2014, 06:31 AM | #7 | |
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Re: Mellings M15 Hi Volume Pump
Quote:
j |
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09-21-2014, 06:33 AM | #8 | |
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Re: Mellings M15 Hi Volume Pump
Quote:
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09-21-2014, 06:51 AM | #9 | |
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Re: Mellings M15 Hi Volume Pump
Quote:
I know about the M15, but not the M9. Harry |
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09-21-2014, 07:24 AM | #10 |
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Re: Mellings M15 Hi Volume Pump
I am thinking Walt meant M19.
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09-21-2014, 07:33 AM | #11 |
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Re: Mellings M15 Hi Volume Pump
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09-21-2014, 09:52 AM | #12 |
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Re: Mellings M15 Hi Volume Pump
Would the M15 be worth using in a Ardun?
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09-21-2014, 10:25 AM | #13 |
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Re: Mellings M15 Hi Volume Pump
No.
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09-21-2014, 01:08 PM | #14 |
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Re: Mellings M15 Hi Volume Pump
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09-21-2014, 01:16 PM | #15 |
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Re: Mellings M15 Hi Volume Pump
Thanks Walt, I guess the right way to find out what is going on, is.... Pull the oil pan, and hook up a 4-5qt oil reserve, and see first hand where the hemorrhage is.Gee it's gone over 800 miles can't be too serious, thanks Chuck S
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09-21-2014, 05:47 PM | #16 |
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Re: Mellings M15 Hi Volume Pump
While on the subject of Mellings pumps. I haven't used them for the past 15 years at least due to the fact that their junk in my opinion. I've had to replace several of them. I now use stock 49/53 ford pumps. Just clean them check the cover and housing for ware and re assemble I have a fixture that tests them. There are several other people here that will check out your pumps as well.
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09-21-2014, 06:10 PM | #17 | |
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Re: Mellings M15 Hi Volume Pump
Quote:
I would still use one in a customer engine if the racing rules said, no dry sumps. |
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09-22-2014, 05:53 AM | #18 |
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Re: Mellings M15 Hi Volume Pump
I have never seen any big change in oil delivery when switching between a stock, helical gear, pump and the M-15 pump. In the "good old days" I made several "double pumps" for loose clearance engines. These consisted of 2 stock pump gear sets combined in one case. Had to cut a hole in the oil pan and weld a voltage regulator cover to the bottom of the pan to fit those things in there. Again, not a huge change in output. It all has to go through the stock screen, housing, tube, and inlet opening.
There are several places to look for leakage when apparently tight engines show low oil pressure. The fitment of the pump housing to the engine block, the center oil manifold tube, and the bypass valve seat are some of the more difficult to diagnose which I have found to be troublesome areas. |
09-22-2014, 06:19 AM | #19 | |
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Re: Mellings M15 Hi Volume Pump
Quote:
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09-22-2014, 09:07 AM | #20 |
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Re: Mellings M15 Hi Volume Pump
I would get another gauge and confirm all my findings,and troubleshoot from there.
R. |
09-22-2014, 09:43 AM | #21 |
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Re: Mellings M15 Hi Volume Pump
Thanks for all the info, I'll put in my next swap meet load..................maybe somebody will want it for cheap! Paul J.
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09-22-2014, 10:21 AM | #22 |
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Re: Mellings M15 Hi Volume Pump
That's exactly what I did with one I bought 10 years ago by mistake. Fortunately for me, the motor gurus here and on the old MSN flathead Ford website advised me NOT to use this M15 in a FH street engine I was building at that time. I used an M19 pump that now has logged in ~ 25k trouble free miles. If they are junk, as someone mentioned, apparently I got a good one. I am putting a '36LB engine together now, and plan to use another M19 pump. Hopefully, I have another good one, as I do not think they are all junk.
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09-22-2014, 10:38 AM | #23 |
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Re: Mellings M15 Hi Volume Pump
Anybody use one of these yet https://www.bobdrake.com/ItemForm.aspx?Item=HR-6600-A what's your thoughts?
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09-22-2014, 11:59 AM | #24 | |
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Re: Mellings M15 Hi Volume Pump
Quote:
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John "Never give up on what you really want to do. The person with big dreams is more powerful than one with all the facts". Albert Einstein Last edited by JM 35 Sedan; 09-22-2014 at 12:16 PM. |
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09-22-2014, 12:14 PM | #25 |
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Re: Mellings M15 Hi Volume Pump
That Drake unit is an M15. I have one on the shelf that measures the same.
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10-29-2014, 02:07 PM | #26 |
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Re: Mellings M15 Hi Volume Pump
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