High Volume Oil Pump? Ebay?

[Powerhouse]

howdy all,

 

I am replacing the old oil pump and decided to get a  high volume pump since the price was just about the same as stock.  

 

The pump i was sold is exactly the same internally and externally as far as I can see.  Any idea on what makes a high volume compared to a stocker?

 

ALSO the new pump doesn't have a pin in the retaining hole for the cam gear?  It's just on there...is that OK?

 

 I bought mine on ebay here:  http://www.ebay.com/itm/Plymouth-DODGE-CHRYSLER-Oil-Pump-HIGH-volume-1935-59-6-cyl-34-56-Trucks-New-/400497498947?pt=Vintage_Car_Truck_Parts_Accessories&fits=Year%3A1947%7CMake%3APlymouth&hash=item5d3f82db43&vxp=mtr

[Don Coatney]

Have you asked the seller about that missing pin. I also suggest you ask the seller for volume numbers on this pump compaired to a stock pump. This is not the first time this pump has been discussed on this forum

[Dodgeb4ya]

The question is... High Volume compared to what? It's just a marketing description IMO!

Bob

[Powerhouse]

Have you asked the seller about that missing pin. I also suggest you ask the seller for volume numbers on this pump compaired to a stock pump. This is not the first time this pump has been discussed on this forum

 

 

I couldn't find much to answer my particular questions on previous posts.  Just as to what it 's for and such.  The seller goes by the handle "MOPARFORUM".  I have just emailed them with questions.  

 

VPW has one listed as:

 

 

NEW Oil Pump (all except M-37/43) Higher • 

volume Part #CC601269H $139

 

 

thanks.

Edited May 29, 2013 by Powerhouse

[Andydodge]

I would be amazed if a high volume oil pump existed for the flathead mopar 6.............why would it?......HV pumps are really only a 60'/70's thing that were introduced around then to answer racing oil problems and by the late 50's the market for racing a flathead 6 would have been close to zilch......I purchased a brand new pump a couple of yrs ago when I was collecting parts for the 230 I intended to build for the 41 coupe and at the time searched thru the net and also by contacting various parts places in the USA and no one ever had seen or heard of a GENUINE HV pump to suit a mopar 6........the pressure might be able to be fiddled with using the bypass valve but the volume?..........nah......I will be happy to be proven wrong tho'............andyd

[Young Ed]

Maybe its higher volume compared to the old worn out one you are replacing......

[TodFitch]

It was my understanding/guess that the rotor type pump was considered a high volume pump while the spur gear type was not.

 

NapaOnline shows no cross for the original spur gear type Chrysler part number of 1124735 but does show a oil pump when you search for 1948 Plymouth: SEP 2244160. So much for that ePay ad claim that this item is hard to find and you should stock up on it.

[Don Coatney]

Here is a link about the same seller and the same pump

 

http://mopar.pairserver.com/p15d24ph_forum/topic/12737-questionable-ebay-auction/?hl=%2Basche%2C+%2Bpump

[greg g]

Is't the output of a pump limited by the orifice and or spaces through which it i trying to pump its material through. Once you fill up the route, it will oly flow what it will flow. A garden hose will only flow so much, no matter how far you open the faucet.

[Plymouthy Adams]

_{has anyone seen the insides of the alleged high volume unit...is the actual rotor thicker sitting in a thicker pump body...I would reserve my opinion till I see the mechanical differences between the stock and alleged high volume..as it is a direct drive link to the distributor..speed (gear size of the input shaft) is a non factor...rotor and rotor displacement would in my opinion be the determining factor in volume}

[Powerhouse]

Maybe its higher volume compared to the old worn out one you are replacing......

 

that could be what is implied by the seller.

 

I have seen actual high volume pumps for the L6.  They look similar but have about a half inch taller assembly.  probably to make room for the different gear setup.

 

The one I got is the same as stock....just missing the retaining pin on the cam gear! 

Edited May 29, 2013 by Powerhouse

[Powerhouse]

 

 

the hole for the retaining pin is only on one side of the gear...and missing the pin.

 

 

 

the slots are different shape but may be the same size.

Edited May 29, 2013 by Powerhouse

[Plymouthy Adams]

what is the actual dimension of the two rotors in thickness (height)  I can see a difference in the housing but it does not appear to be that gread in actual body size only in mount flange design..and I admit the side by side shows there is a possible difference in thickness but not a great amount to my naked eye/posted picture  thanks for the photos by the way...

[Powerhouse]

they are the same dimensions.  The angle of the photo may have made them seem different.

 

Seller emailed me back:

 

Ya that is supposed to have a pin in it to hold the gear...send it back and I will refund your purchase+ shipping and the return shipping...sorry I did not see that...

 

Very good customer service.  I have purchased from him before with no problems.

Edited May 29, 2013 by Powerhouse

[Plymouthy Adams]

then what would make this a more high volume..I fail to see..I was thinking my eyes were correct that there was no difference but with pictures it is hard to say for sure...the body of the two pumps differ only in what appears again to the naked eye as physical dimensions not so much the square area..however...I will offer up the relationship of the rotor squish area in regard to intake and discharge hole positions...maybe this provided a bit of higher volume...

 

again thanks for the measurement of the rotor cross section...I would venture there is some improved oil flow but still I do not think it is of great difference in the specs between the two..

[greg g]

Wouldn't a quick trip tot he hardware store for a roll pin, take care of the problem???. It is my understanding that the gasket thickness on the base plate of the pump is critical to the operation of the pump, as it sets the clearence between the impeller and the body, thus effecting flow and controling cavitation. The O ring on the modern one raises the question, is the new design superior to the old style?

[Powerhouse]

Well, usually yes, but there was no hole anyway in the shaft.  I'd rather not mess with it trying to drill it or take off the gear and see if there was a hole and just return it.  It wasn't the high volume one anyway I was looking for.   As for the o ring, It seems to crush when screws are tightened and form a good flush seal. 

Edited May 30, 2013 by Powerhouse

[greg g]

Ah well that changes everything!!

[Powerhouse]

I ordered a new one from VPW.  SAME THING, NO PIN!  ARGH.  I called and they said to send it back there should be a pin.  They are sending me a new one with the pin.  

 

IF you need to order one of the oil pumps from ANY SUPPLIER, ask them to hand pick it to make sure the pin is present.  Someone must have sold a bad batch or something.

Edited June 21, 2013 by Powerhouse