Oil Pump query

[Aussiecsi]

My engine builder says the oil pump in my '74 csi needs to be replaced ( part 11411269550 ) . I have been offered a NOS pump 11411286468 which is suitable for E23, E24 & E28 ...this pump is described in one ebay ad as "splined shaft type:". .
There appears to be some" crossover" on these part numbers with the E24 . The upshot is, can the NOS pump be used in my engine?. Many thanks, Simon

 

[Ian C]

Hi Simon, I think it needs the pickup altered to clear the sump. Seem to remember a thread here from a few years ago addressing this.

 

[sfdon]

later pumps have splined shafts so plan on a new gear.
you can bolt the early pick up to the late pump but may need a bit of relieving at the shaft end in the early pickup.

 

[Aussiecsi]

Thanks Gents , hopefully can get the pump sorted as suggested.

 

[m5bb]

I wasn't happy with my oil pump pressure. Pumps at time NLA
I did some research and did some measuring with machine shop.
Decided to replace this $4.00 part.
#12

INTERMEDIATE PLATE

11411714755

Made a huge difference.

Gary

 

[E9madada]

I wasn't happy with my oil pump pressure. Pumps at time NLA
I did some research and did some measuring with machine shop.
Decided to replace this $4.00 part.
#12

INTERMEDIATE PLATE

11411714755

View attachment 117604
Made a huge difference.

Gary

Gary, how did you come to the conclusion about the intermediate plate, did it have signs of wear?

Adam

 

[m5bb]

Gary, how did you come to the conclusion about the intermediate plate, did it have signs of wear?

Adam

Yes it did and was too thin. This allowed for less pressure as this plate sits right next to pump impeller. Maybe oil was going past the side?
My built M30 runs 30-60 psi.
Gary