KAD44 / 290 Exhaust Bellow

It's hard to tell from the photo, but there should be a metal "deflector plate" fitted behind the anode at the bottom of the drive shield.
Is it there?

Also, it would be interesting to see a close up of the lower unit ... the exhaust arrangement changed quite a bit from DP-D onwards.

.

I don't think the defector plate is there but don't know for sure and the drive is currently away so can't check. Will he things I'll be checking with the guy who has the leg on Monday though.
 
What are those bolts doing at the end of the cavitation plate? I've not seen that before, Could they be causing back pressure?

As for your speed performance I notice you have A series props on the back and they look particularly coarse. I'm no prop expert and could be barking up the wrong tree but I can tell you the KAD 44 recommended props are B or C series and for your boat I'd expect a B5 / C4 at least if you are running the correct drive and reduction ratio that is

I did initially have B5's on there but performance wasn't as expected with those so when it came out for warranty works I got the dealer to change them. He told me he'd put b7's on which he clearly hadn't so needless to say there was no improvement in performance.

The ratios are being checked by this guy who has the leg.
 
I did initially have B5's on there but performance wasn't as expected with those so when it came out for warranty works I got the dealer to change them. He told me he'd put b7's on which he clearly hadn't so needless to say there was no improvement in performance.

The ratios are being checked by this guy who has the leg.

And I have no idea what those bolts are for either.
 
Dazzajohn
This may help a little with rectifying the problem.
A similar boat to yours was the UK built falcon 27 albeit probably slightly heavier. These were built in the same era as your boat and a few were fitted with the 230 hp volvo diesel.
Maybe worth looking on other sites for info someone may have one/ had one who can tell you what drive was thwe standard fit.
Boats were built Thorpe Norwich MD Bernie Lake think he works for Tingdene now
Best of luck with your frustrating problem
 
It protects the exhaust bellows from water hitting it at speed.

From what I can see his setup maybe because of extra anodes. My setup was changed because of anodes weren't lasting the year because of my marina, so the VP dealer fitted two bar anodes and the plate removed as it wouldn't fit. Furthermore on the cavitation plate I have one bolt in the middle for an extra disc anode, so maybe those two bolts are for a bar type anode. Fyi, the plate removed has not affected my bellows. If you walk around some yards, you will see few dpe drives anodes fitted this way.
 
Just a couple of thoughts.

If the bellows is bursting, then the blockage would likely be after the bellows - else the rubber joint between the engine exhaust and the drive would of blown??

Not sure where you are based, but I would recommend you phone Tony Nelson (nelson engineering) - he maintains my ad41's and 290 drives he lives and breaths that era of Volvo engines.

Best of luck to you.
 
Just a couple of thoughts.

If the bellows is bursting, then the blockage would likely be after the bellows - else the rubber joint between the engine exhaust and the drive would of blown??

Not sure where you are based, but I would recommend you phone Tony Nelson (nelson engineering) - he maintains my ad41's and 290 drives he lives and breaths that era of Volvo engines.

Best of luck to you.

My local guy here in Dover has sent the leg to someone in Brighton who knows the full ins and out of these legs so hopefully will get this resolved.

After an initial inspection of my leg they have made the following observations;

“It appears that the lower drive housing is a DP-E, the intermediate looks to be from a DP-B – the gear cable yoke is different to begin with and the stamped part number on the casing is not from a DP-E.”
 
My local guy here in Dover has sent the leg to someone in Brighton who knows the full ins and out of these legs so hopefully will get this resolved.

After an initial inspection of my leg they have made the following observations;

“It appears that the lower drive housing is a DP-E, the intermediate looks to be from a DP-B – the gear cable yoke is different to begin with and the stamped part number on the casing is not from a DP-E.”

Yikes. Who supplied this leg?
 
My local guy here in Dover has sent the leg to someone in Brighton who knows the full ins and out of these legs so hopefully will get this resolved.

After an initial inspection of my leg they have made the following observations;

“It appears that the lower drive housing is a DP-E, the intermediate looks to be from a DP-B – the gear cable yoke is different to begin with and the stamped part number on the casing is not from a DP-E.”

That's your answer then, the non-dpe part of the leg will not be able to pass the exhaust gas as well as it needs and pressure builds in the bellow.
 
This guy is just around the corner from me! Thanks!

If it helps going forward, I used IVSS as in the above link and had perfect service. my then 15 year old DPE came back looking as new and has been faultless. If you need a second opinion on your leg setup I'd recommend them.
 
If it helps going forward, I used IVSS as in the above link and had perfect service. my then 15 year old DPE came back looking as new and has been faultless. If you need a second opinion on your leg setup I'd recommend them.

Ok, that's good to know thanks. I think the guy looking at it in brighton seems to be getting somewhere though.

No wonder I had performance issues - I was told by the dealer he put B7 props on there but the guy who has the leg says;

"its hardly surprising the boats not performing, the props are hilarious!, neither are Volvo props or designed for that drive or engine, the smaller of the 2 is for a wakeboarding boat and a v6 or v8 petrol!!"
 
Looks like the dealer fobbed you off. At least twice. You have evidence now. I'd seriously consider claiming agaìnst him in small claims if he's unwilling to make good your loss.
 
Looks like the dealer fobbed you off. At least twice. You have evidence now. I'd seriously consider claiming agaìnst him in small claims if he's unwilling to make good your loss.

Yes I am gathering evidence - the emailed reports etc then when it’s sorted and I get the bill I may send it to him. If he refuses to pay which I suspect he will it may well be time for small claims.
 
Used IVSS in the past for repairs.
Rebuilt a couple of 280T VP legs for me .
Good points they do not need to charge VAT and thats all they do....outdrives.
You get to meet and talk to actually guys doing the work.

Not so good point..... need to chase, to ensure job was done on time.
 
Last edited:
From all the woes there seem to be with the sterndrive It may be worth checking that the correct drive for the engine uses the same transom shield assembly as you have, I assume it was not changed when the petrol engines where removed. Of course it might be perfectly OK
 
Top