3010 injection pump replacement

[Ken11487]

The 3010 I saw today had the injection pump replaced with one from a 3020 according to the dealer.
Is this possible?
I suppose the originals may be hard to find and not as good any way.
Ken

 

[Cliff Nelson]

Yes, the 3020 pump will work on a 3010. The advantage to this is the 3020 pump has a speed advance where the 3010 does not.

 

[Kent Petersen]

most all the pumps that went to a rebuid were changed to the a speed advance. it was kit for the 3010 & 4010 pumps that roosa master made adv. it helped the starting a lot

 

[LJD]

Some 3010 pumps have automatic timing advance and some do not. All the 3020 pumps have it. The main difference between the 3010 and 3020 pump is the size. All 3010s use a pump with pump plungers that are .29" diameter. All 3020s use pump plungers that are .31" diameter.

So, to use a 3020 pump on a 3010, you have to turn down the fuel delivery.

3010 pump delivers 29 ccs at 50 RPM (per 1000 strokes at cranking speed).

3020 pump delivers 31 ccs at 75 RPM (per 1000 strokes at cranking speed).

3010 PUMP at full throttle delivers 10-12 ccs (per 1000 strokes at 2650 engine RPM).

3020 PUMP at full throttle delivers 11-13 ccs (per 1000 strokes at 2750 engine RPM).

3010 timing mark put at 138.5 degrees.
3020 timing mark put at 138.5 degrees.

 

[MoMark]

I also have a 3010D. How do you identify a pump
which has been upgraded?