Difference in Duoprop - which one is mine?

[sbbamafan]

I have looked at the spotter guide / chart but am unsure if I have DP-A, DP-A1, DP-A2, DP-B, DP-B1, DP-C, DP-C1. How can I tell for sure? Which is better and why? Also how can I determine my gear ratio?

Thanks

 

[Don S]

Re: Difference in Duoprop - which one is mine?

Easiest way would be to post the Volvo serial number of your engine and drive.

 

[sbbamafan]

Re: Difference in Duoprop - which one is mine?

The numbers on the sticker on top of the engine cover are quite faded but APPEAR to be as follows:

570A/PS
4100121767
868273

I would like any of the vital stats you can provide from these numbers including factory power rating, gear ratio, etc.

Thanks for you help.

 

[Don S]

Re: Difference in Duoprop - which one is mine?

Assuming it's still the original drive, here are the numbers for it.

SN 3102077977
Model number DP-A
spec number 854021
Gear ratio 1.95: 1

Here is the OEM manual for that drive. In the front is drawings showing the differences between models.
They all work.
http://www.4shared.com/file/48536730/fa3b3311/280_to_DP-C_Drive_manual.html

Might as well have the engine manual too.
http://www.4shared.com/file/89797332/5d203ad5/AQ211_thru_572.html

 

[sbbamafan]

Re: Difference in Duoprop - which one is mine?

Thanks SO much Don. Yea - I kind of figured the 'A' part out when I saw the cover.

 

[sbbamafan]

Re: Difference in Duoprop - which one is mine?

Oh - what does the spec number mean?

 

[Don S]

Re: Difference in Duoprop - which one is mine?

It's the part number for the complete drive assembly.