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| Oil Pumps https://slantsix.org/forum/viewtopic.php?t=29902 |
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| Author: | ValiantOne [ Thu Jul 17, 2008 12:40 pm ] |
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Quote: For some strange reason, I'm suddenly seeing a whackload of new slant-6 oil pumps on eBay for $20 to $40.
I only found 2! ?? (on ebay) The ones I got this morning were all in Clevite boxes. They said made in the USA on 'em though. Is there even a diff. between the Melling and Clevite or where they made by the same foundry/manufacturer? C |
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| Author: | 77volare [ Thu Jul 17, 2008 1:09 pm ] |
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The Melling looks to be more durable (cast cover on the Melling vs. thin stamped steel on the Clevite) and has a larger hole on the intake side - whether this means more oil will flow . . . I've been told that 1 pump is as good as the other, tho. For about $5.00 one can order the high volume spring and put in a standard pump. |
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| Author: | SlantSixDan [ Thu Jul 17, 2008 1:14 pm ] |
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Quote: The Melling looks to be more durable (cast cover on the Melling vs. thin stamped steel on the Clevite)
A thin stamped steel cover on a slant-6 oil pump?! Are ya sure? I'd have to see that...seems to me the design of the pump would not tolerate a stamped steel cover.Quote: $5.00 one can order the high volume spring and put in a standard pump.
The spring affects the line pressure, not the volume of oil delivered.
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| Author: | 77volare [ Thu Jul 17, 2008 1:23 pm ] |
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"A thin stamped steel cover on a slant-6 oil pump?! Are ya sure? I'd have to see that...seems to me the design of the pump would not tolerate a stamped steel cover. " I could send you a pic, but what's the point . . . "The spring affects the line pressure, not the volume of oil delivered." I guess I should be pissed at Mopar Performance for selling me a spring under false pretenses! |
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| Author: | Joshie225 [ Thu Jul 17, 2008 1:24 pm ] |
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I tried the high pressure spring once. 70+ psi is a bit much so it came back out. I've been saving it for years now. I may put it in the 440 for the '52 Packard. V8 oil pump drive gears are quite a bit larger and stronger than slant pump drive gears. I've seen the flat machined oil pump covers, but they were at least 1/8" thick not some stamped piece of sheet metal. |
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| Author: | Joshie225 [ Thu Jul 17, 2008 1:29 pm ] |
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Quote: I guess I should be pissed at Mopar Performance for selling me a spring under false pretenses!
And they might be indignant that you don't understand the function of the relief valve.The description doesn't say anything about volume. http://chucker54.stores.yahoo.net/oilpresrelsp.html |
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| Author: | 77volare [ Thu Jul 17, 2008 1:29 pm ] |
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"I've seen the flat machined oil pump covers, but they were at least 1/8" thick not some stamped piece of sheet metal." My bad . . . okay, 1/8" and machined = still looks like a weak piece compared to the Melling., |
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| Author: | 77volare [ Thu Jul 17, 2008 1:33 pm ] |
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I stand rejected . . . u can stop spanking me now. |
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| Author: | Joshie225 [ Thu Jul 17, 2008 1:35 pm ] |
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OK, I'll play nice. |
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| Author: | SlantSixDan [ Thu Jul 17, 2008 1:37 pm ] |
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Quote: I could send you a pic, but what's the point . . .
Um...showing us what you're seeing...? :shrug:Quote: okay, 1/8" and machined
Ah, OK...does it have the two kidney-shaped bulges in it, or is it 100% flat? If it's completely flat, then wow, man, suddenly it's 1964!  (the kidney-shaped cavities were added to the cover plate in '65 or so to improve oil pump efficiency)Quote: I guess I should be pissed at Mopar Performance for selling me a spring under false pretenses!
H'mm. Maybe. What does the description say in the MP catalogue?
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| Author: | 77volare [ Thu Jul 17, 2008 1:37 pm ] |
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Anyhow, I have a few clevite pumps if anyone who couldn't get to Pep Boys is in need. |
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| Author: | Doc [ Thu Jul 17, 2008 1:40 pm ] |
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The stamped steel cover is pretty thick material, .125 (1/8th thick) if I remember right. The flat cover was also on some of the early factory pumps, until the factory engineers discovered that it is possible for a small amount of water to collect at the lowest point in the pump, that place is in the pump's impeller cavity, against the flat cover's inner surface. If that water freezes, the impeller jams and breaks the pump's drive gears. The cast cover with the "bumps" allow for a small amount of water to settle outside the impeller cavity. The bump openings also helps the oil flow into and out of the impeller cavity a bit better. DD |
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| Author: | emsvitil [ Thu Jul 17, 2008 4:01 pm ] |
| Post subject: | Scored....... |
In a Sealed Power Box with Melling sticker. The plate looks cast, and there's a serial number tag on it. Made in Mexico. Looks like it's been on the shelf for decades. Warehouse was out, but they found one at a nearby Pep Boys with the computer. It's funny that they don't know about the cheap price until you tell them. Although the guy at the first Pep Boys told me of another bargain........ (I'll post it in Social Corner) BTW, no gasket........ 
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| Author: | Doc [ Thu Jul 17, 2008 4:15 pm ] |
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Quote: The plate looks cast, and there's a serial number tag on it.
I have seen "machined" steel and cast iron flat covers.It is interesting to see all the different versions of the SL6 oil pump from the same distributor... So much for "FIFO" (first in - first out) inventory methods. DD |
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| Author: | NCDemon1971 [ Thu Jul 17, 2008 6:17 pm ] |
| Post subject: | oil pump |
I need one of these can anybody hook me up??? if so PM me |
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