Jamie Dundee
Well-Known Member
Does the collective think this is worth trying to save or is a new one in order? 20 years old 800 hours. A new one from Repower will cost ~£200. I’m inclined to go new. 
TAMD41P exhaust elbow
- Thread starter Jamie Dundee
- Start date
Portofino
Well-Known Member
Replace with new .Saw somewhere stainless steel after market supplier has sprung up .
Jamie Dundee
Well-Known Member
Thanks for that, confirms what I was thinking. The only stainless ones I can find are from Bulgaria so £350 + import duty + postage etc. Also turns out mine is the 3 1/2” version, not the 4”, which perversely is more expensive ?
Plum
Well-Known Member
Before you buy a new one, are you aware that the stainless steel sleeve inside can be removed for better inspection and cleaning? it just prizes out and is held central by the ring of stainless teeth which you can just see in the bottom picture. When mine was 19 years old after separating it cleaned up nicely and went back on.
Jamie Dundee
Well-Known Member
Ooh, no I wasn’t. Too late as I’ve ordered one from Keypart (Repower out of stock) but I’ll have a poke about tomorrow and see what can be done. If doable I can either sell it or keep as a spare. Thanks for the info ?
jamie langstone
Well-Known Member
That's what i done was clean it. Although at some point it will need changing as the walls will be getting thinner as i cleaned a lot rust off them .
Jamie Dundee
Well-Known Member
I’ll try tomorrow although I’m happy enough to know all the ancillary stuff is new at this stage. I changed the raw water pump, head seacocks and trim tabs last year, exhaust elbow and upgraded batteries so far this year, raw water strainer to go if I can get the damned thing off, belts, oils and filters done and spannerman booked to check the valve clearances. Still undecided about drilling three holes in the tank and fitting inspection hatches and still to work out a way of getting the fuel filler off to upgrade that. Next year maybe new water pumps but that’s a whole season away yet…
kashurst
Well-Known Member
What is the other end like? Have a look for small pin holes near the turbo end. Probably best to get a new one.
Bandit
Well-Known Member
This is one of my Exhausts from a Volvo Penta TAMD 63p at 13 years old alongside its replacement
The problem in mine apart from the bend to the water injection bend failing is the blockage to the water flow on the exhaust.
It is essential that you get a good spray of seawater to cool the exhaust system. I think mine between back pressure and flow was down over 50% .
Yours looks 80% or more occluded.
Before you jump to stainless steel as a universal panacea, it is not, one boat we look after with stainless injection bends replaces them every 7 years or so.
Stainless steel causes as many problems as it solves.
How old is the injection bend you have ?
The problem in mine apart from the bend to the water injection bend failing is the blockage to the water flow on the exhaust.
It is essential that you get a good spray of seawater to cool the exhaust system. I think mine between back pressure and flow was down over 50% .
Yours looks 80% or more occluded.
Before you jump to stainless steel as a universal panacea, it is not, one boat we look after with stainless injection bends replaces them every 7 years or so.
Stainless steel causes as many problems as it solves.
How old is the injection bend you have ?
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paradave
Well-Known Member
I’m replacing mine this year, on advice. I’m interested to see how little steam comes out after changing.
paradave
Well-Known Member
Did you notice any increase in power/revs with the new elbow out of interest?
Jamie Dundee
Well-Known Member
New one on the way. The other end looks ok, and the 3 year old turbo looks good.
Jamie Dundee
Well-Known Member
Not gone for stainless, the original elbow lasted 20 years which will see me out. Oddly the exhaust temps were ok, 48-50c at 3000rpm.
Jamie Dundee
Well-Known Member
Bandit
Well-Known Member
No but I slept better knowing exhausts running cooler and less cooling water back pressure. And also did both engines to future proof.
oldgit
Well-Known Member
Get new one. its an easy simple job.
Mine started weeping rust stains on bilge foor.
It literally fell to bits on removal.
even worse example from previous boat
Mine started weeping rust stains on bilge foor.
It literally fell to bits on removal.
even worse example from previous boat
Jamie Dundee
Well-Known Member
New one on the way ? There are people on the island who would get another couple of years out of your old one ?Get new one. its an easy simple job.
Mine started weeping rust stains on bilge foor.
It literally fell to bits on removal.
even worse example from previous boat
Mine looks fine externally.
julians
Well-Known Member
I recently replaced the elbow on a 2007 vp d4 engine, when I removed it , it seemed fine internally (nowhere near as bad as some of the photos up there) , but the mating surfaces where the raw water feed pipes bolt on to it had corroded, so much so that it leaked raw water into the bilge when the engine was running. No amount of sanding or flatting off the surfaces would let it seal, too much material had been lost to rust.
Jamie Dundee
Well-Known Member
I’m putting a metal blanking gasket on the blank plug and card exhaust gasket on the inlet hose tail. Hopefully all will be good ?
Jamie Dundee
Well-Known Member
New elbow ordered from Keypart at 15.20 yesterday afternoon, delivered to the Isle of Man at 12.00pm today with free postage! Incredible service ???
Just to show how blocked the old elbow was….
Just to show how blocked the old elbow was….
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