Volvo Penta Duoprop Lower Outdrive DP Checkout 

Amendment: Hello All, The newer and replacement gear sets have done away with marking the inspection numbers on each gear. The inspection numbers on these later units will be stamped on the rear gear/shaft coded as follows: F=front gear, R=rear gear, P= pinion gear

Thank you. It was so helpful watching through your vids. I am an Engineer that used to have all the gear, milling machine, colchester lathe etc, I am now the Chief Engineer for our national health service here in uk and have little opportunity to do the hands on, but I have a boat with the 290DP penta sterndrive and when I priced a new one, I decided I would have a go and rebuild my own. I am starting it tomorrow as just got the leg off the boat this evening. What a fantastic Engineers talk through, I could not have asked for more. I have written all the specs and tolerances that you work to and will, where possible follow your build. So here goes. Thanks again, I have saved the vids for reference as I am sure many guys will have already done. Keep up the great work.

Not sure why people say it's difficult to rebuild these. The only thing I find hard is finding one place that has everything you need to do it. Don't know if it's because I've rebuilt many vehicle axles, but setting up pinions isn't hard. I have several friends with outdrives and they say I'm the only guy around that will touch them. I myself have talked to a few marine shops close to me and they all said they won't touch them. Funny how as a non-marine mechanic I get swamped fixing them around when boat season really kicks in. Nice video. I was looking for a video with a complete breakdown of a dp-d1 because the one I'm working on currently seems to be missing pieces.

Patience and the tools all ways a plus. I use to enjoy rebuilding munci 4 speeds, but now after 30 + since my last one, think my patience are to far long,,hehe! Bash right around the corner, have a blast, Bear

That's indeed very specific. A lot of things to know to get it right.

Hi Dean A change is as good as a rest, great inspection Dean👍👍 atb Kev

This was very interesting. It looks like rebuilding these is something to leave to the experts such as you

Hey buddy ! Thank you so much for this great video ! Gives me hope for rebuilding my own dp drive Greetings from Denmark

What a great project to work on👏👏

Awesome video!

Found a AQ 280 DP in what i think is good shape, clean oil, tiny amount of fuzz and rotates nice. Repowering a old 270 4 cylinder (still runs great, just underpowered) on my 21 trophy. Also in great shape. Did go the new route with a 350 sbc. Pieceing it together now. Got several 280 V-8 ratio drives plus this duoprop. I have both course and fine spline tail stocks. I know the DP has course but can't find the right U-joint. Bearing caps are different sizes. One has inside C-clips the other outside to hold the bearing caps.

Gday Dean, there’s a fair bit involved in rebuilding one of these and I’m guessing the cost for parts would be up there to, really interesting video mate and thanks for sharing, cheers

Oh yeh, very helpful,,,!!!. And much appreciated. I’m gonna send you an email.,Mike

Hi Dean, back lash and shimming is necessary when you replace bearing, shafts or carrier right? For shaft seal only isn’t right? Martin

Hello, great video! I have a question; where is oil circulation pump on DP290, or rather how oil circulates threw out the drive? On SP model in cross section is shown oil circ. pump behind the rear gear but not on DP version. Tnx, keep up the good work! ;)

Do they still sell these gears and bearings? I have one of these and she is 30 years old now... this was very interesting to watch. I cant even find a mechanic who will even take this job on.

Where are you located? I live in Connecticut and don’t know of anyone to inspect or rebuild a DPC-1 drive. Thank you.