Oil Pump offset

[Mike Attew]

During this engine rebuild I was going to change the oil pump as everything is stripped. The engine parts supplier has supplied an oil pump which he insists is the correct pump he supplies for this early 1256.

My pump has a pressure relief valve but the new one does not, is it built in on the new one?

The supplier has no idea and I am loath to use it. I was hoping somebody on here has replaced theirs or has any info.

The new pump has POL 806E on the box, the pump has VBR-03 on it.

[1972nail]

Can you post a photo of the distributor drive end please? There is a slot in the end which drives the distributor, some pumps have a central slot and others an offset slot.

[Mike Attew]

It's an offset. I have seen more of the new pump which say they are uprated, I now think looking at the first picture it has a built in relief valve.

[1972nail]

Looking at pbottomley's post on building the OHV engine he uses what looks like your new style pump......

viewtopic.php?f=14&t=21549

[Mike Attew]

That is a helpful post thank you, I didn't find it because of the title I reckon but it looks the same pump to me.

Thanks for the help.

[pbottomley]

Mike just diff suppliers, old style relief valve unbolts and spring comes out etc, later style valve built into pump more hidden... as long as the offset is correct safe to use.