Topics

Onan MDKD 6.5kW genset exhaust elbow


Karen Smith
 

Does anyone have an exhaust elbow for an Onan 6.5kW MDKD generator exhaust elbow?  Onan considers it an "obsolete part" and the price they want for it is mind-numbing... This is for the older, smaller 6.5kW generator installed on the older SM.

We would even be interested in an old one that leaks or is otherwise not serviceable since we have identified a supplier who can craft a new one for a reasonable price from from any elbow that is complete enough for them to get dimensions from. Right now ours works, but is patched with JB Weld, and we can't afford to send it off and be without a generator for the 6 to 12 weeks it takes for a new one to be crafted.

If you have a new one in your spare parts bin, we'll buy it from you and replace it with a nice pretty new stainless one as soon as we can get it made!

Karen Smith
Harmonie, SM160
Annapolis, MD.


Craig Briggs
 

Karen, 
I've got a two JB Weld patches on engine pipes that are now "manufacturer discontinued" .  The patches are, I can't remember exactly, about 15 years old and seem to be as good as new. If your JB Weld patch is holding, you may want to just trust it to continue to hold for longer than a new part might last. Obviously, your experience may be different, but it may be perfectly OK. JB Weld rocks!
Craig

 


Germain Jean-Pierre
 

Hi Karen, 

We have a spare.. but we’re in Fiji...

Kind regards,

Jean-Pierre Germain,SY Eleuthera, Fiji.




On 16 Oct 2019, at 13:27, Karen Smith via Groups.Io <karenharmonie@...> wrote:

Does anyone have an exhaust elbow for an Onan 6.5kW MDKD generator exhaust elbow?  Onan considers it an "obsolete part" and the price they want for it is mind-numbing... This is for the older, smaller 6.5kW generator installed on the older SM.

We would even be interested in an old one that leaks or is otherwise not serviceable since we have identified a supplier who can craft a new one for a reasonable price from from any elbow that is complete enough for them to get dimensions from. Right now ours works, but is patched with JB Weld, and we can't afford to send it off and be without a generator for the 6 to 12 weeks it takes for a new one to be crafted.

If you have a new one in your spare parts bin, we'll buy it from you and replace it with a nice pretty new stainless one as soon as we can get it made!

Karen Smith
Harmonie, SM160
Annapolis, MD.


Mark McGovern
 

Karen,

I just looked up the price for a replacement for this part.  US$2,269 is absolutely insane!  I could make them out of 316 Stainless Steel for way less than that.  I have to remove mine this winter for cleaning so I may just design a replacement and put a few extra on the shelf. Unfortunately, that will too late to help you guys out.

--
Mark McGovern
SM #440 Cara
Deale, MD USA


Orion Martin
 

Hi Karen,

 Is it possible to temporarily remove it and measure for dimensions? 


Mark McGovern
 

Orion,

The exhaust elbow is a relatively complex geometry that also fits into a fairly tight space.  While I am sure replicating it from measurements and sketches alone could be done, the chances of getting something wrong would be pretty high.  Here is a picture of one for reference:  https://amelyachtowners.groups.io/g/main/photo/84403/13?p=Name,,onan,20,1,0,0  

--
Mark McGovern
SM #440 Cara
Deale, MD USA


Karen Smith
 

Mark,

From the local Onan dealer we were quoted $1600, still pretty crazy.

The internal geometry of the part is complex, with a partial water jacket, and they are typically investment cast.  There is a shop that will make the molds, but they need a part to cut open so they can measure and duplicate the internal geometry, and it takes a minimum of 8 weeks. If we could find an old one, we'd start that process while ours is still limping along.  

We were lucky--this time--that the salt water spray from the leaking elbow didn't hit anything fragile or important. It could easily have soaked and destroyed our battery charger, or the electrical end of the generator.  We do not consider JBWeld to be anything other than a very short term emergency repair to be made right as soon as possible, however that is done.





Miles
 

Keran, Mark,

 

If anyone winds up having a genset exhaust elbow made,  I would like to have one also.  Maybe added numbers will reduce the unit cost. 

 

Miles Bidwell

 

s/y Ladybug, sm216 Newport, RI  soon leaving for Martinique


Paul Dowd and Sharon Brown
 

You can get one from Seapower Marine in the UK for £425 + VAT (20%). http://www.seapowermarine.co.uk

 

I have enquired about getting a discount for ordering several, and also to see if the VAT is not applicable for non-UK residents (which I believe should be the case).

 

Cheers,

Paul

S/Y Ya Fohi - Amel 54 #98

 

From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io> On Behalf Of Karen Smith via Groups.Io
Sent: 18 October 2019 06:02
To: main@AmelYachtOwners.groups.io
Subject: Re: [AmelYachtOwners] Onan MDKD 6.5kW genset exhaust elbow

 

Mark,

From the local Onan dealer we were quoted $1600, still pretty crazy.

The internal geometry of the part is complex, with a partial water jacket, and they are typically investment cast.  There is a shop that will make the molds, but they need a part to cut open so they can measure and duplicate the internal geometry, and it takes a minimum of 8 weeks. If we could find an old one, we'd start that process while ours is still limping along.  

We were lucky--this time--that the salt water spray from the leaking elbow didn't hit anything fragile or important. It could easily have soaked and destroyed our battery charger, or the electrical end of the generator.  We do not consider JBWeld to be anything other than a very short term emergency repair to be made right as soon as possible, however that is done.




--
Cheers
Paul
Ya Fohi - Amel 54 #98


Karen Smith
 

Paul,

Are you sure the part you have seen at Sea Power Marine is for the MDKD genset?  That is a model significantly older and rather different than the one on your boat.  They also state on their website that they do not ship outside the UK (in fact, they exclude a lot of the UK from their sales territory!)


eric freedman
 

There was a vendor on EBay that made beautiful cast stainless exhaust elbows for Yanmars. Much better than the factory version. I have one Kimberlite  and it is flawless. Possibly someone can find them and ask is the do,  or will make the elbow you need.

Fair Winds

Eric

Kimberlite Amel Super Maramu #376

 

 

From: main@AmelYachtOwners.groups.io [mailto:main@AmelYachtOwners.groups.io] On Behalf Of Miles
Sent: Friday, October 18, 2019 7:23 AM
To: main@AmelYachtOwners.groups.io
Subject: Re: [AmelYachtOwners] Onan MDKD 6.5kW genset exhaust elbow

 

Keran, Mark,

 

If anyone winds up having a genset exhaust elbow made,  I would like to have one also.  Maybe added numbers will reduce the unit cost. 

 

Miles Bidwell

 

s/y Ladybug, sm216 Newport, RI  soon leaving for Martinique


Paul Dowd and Sharon Brown
 

Ah, my apologies, I asked for a MDKBN, but I am still amazed at the price difference. As for shipping they did say in an email that they would ship abroad and not include VAT.

 

Cheers,

Paul

S/Y Ya Fohi - Amel 54 #98

 

From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io> On Behalf Of Karen Smith via Groups.Io
Sent: 19 October 2019 05:23
To: main@AmelYachtOwners.groups.io
Subject: Re: [AmelYachtOwners] Onan MDKD 6.5kW genset exhaust elbow

 

Paul,

Are you sure the part you have seen at Sea Power Marine is for the MDKD genset?  That is a model significantly older and rather different than the one on your boat.  They also state on their website that they do not ship outside the UK (in fact, they exclude a lot of the UK from their sales territory!)


--
Cheers
Paul
Ya Fohi - Amel 54 #98


Mark McGovern
 

Karen,

Are you talking about the Onan Exhaust Elbow or the Onan Exhaust Manifold?  See the picture below:



The Exhaust Elbow looks like a fabricated part that does NOT have a water jacket.  The Exhaust Manifold certainly does have a water jacket and looks like a fairly complex cast and machined part.

Thanks,
Mark

--
Mark McGovern
SM #440 Cara
Deale, MD USA


Mark McGovern
 

Karen,

I stand corrected!  It looks like that there is a small water jacket in the Onan Exhaust elbow after all.  Here is a picture that I found looking down the the back side of one on Alex from Nikimat's website:



http://www.nikimat.com/parts_for_sale/onan_155_3261_02_mixer_elbow_exhaust_manifold.html

It is a relatively simple part to fabricate. I will take mine off after we winterize the boat in the next few weeks and have a closer look at making a replacement from 316 Stainless.

Mark
--
Mark McGovern
SM #440 Cara
Deale, MD USA


Paul Osterberg
 

My Onan exhaust manifold looked as on the picture above, blocked with carbon. I cleaned it in place on the Onan a rather uncomfortable tasks. Is there any benefit to remove the manifold? do one get access to the interior to clean out more carbon deposit? Or does it only give a lot of job to remove it looks a bit corroded? first time I loosen the elbow,, one of the bolts holding it broke of and I had some job to get it out, do not fancy that kind of job very much
Paul on SY Kerpa SM#259 Lagos, Portugal
  


Alexandre Uster von Baar
 

Hello Mark, 


Please note on NIKIMAT was the Onan MDKAL

I don’t know if there is a difference with the MDKD mentioned. 


I would check the part number.  

On the MDKAL the exhaust mixing elbow was part: PN 155-3261-02 (E086) and I paid $475 for my spare

http://nikimat.com/spare_parts_ONAN_MDKAL_B_Specs_12_volt.html

(scroll, almost at the bottom).  


Sincerely, Alexandre



On Monday, October 21, 2019, 06:32:02 PM UTC, Mark McGovern <mfmcgovern@...> wrote:


Karen,

I stand corrected!  It looks like that there is a small water jacket in the Onan Exhaust elbow after all.  Here is a picture that I found looking down the the back side of one on Alex from Nikimat's website:



http://www.nikimat.com/parts_for_sale/onan_155_3261_02_mixer_elbow_exhaust_manifold.html

It is a relatively simple part to fabricate. I will take mine off after we winterize the boat in the next few weeks and have a closer look at making a replacement from 316 Stainless.

Mark
--
Mark McGovern
SM #440 Cara
Deale, MD USA


Karen Smith
 

Mark,

Based on your hull number, and the pictures of your exhaust elbow, I am guessing you have one of the newer, bigger gensets.  I think that one is available as an OEM for ~$500

Ours (from a 6.5kW MDKD) looks rather different, the flange is basically the entire back end of the exhaust manifold, and incorporates the line carrying coolant to the raw water heat exchanger.



Mark McGovern
 

Karen,

That sure is much different than the elbow on my Onan MDKAV 7kW.  Mine looks much more like the one from Nikimat's MDKAL.  If you do end up replacing yours with a new one, let me know.  I will happily take the old one off your hands to make a jig and will give you a brand new one in return as a spare/replacement.

--
Mark McGovern
SM #440 Cara
Deale, MD USA


amelforme
 

The MDKAL pretty much happened on the Millenium edition as an evolution of the previous ONAN MDKD version. I think the last 35 SM 53 had the MDKAV but Olivier would probably know for sure. It might have been the last 50. Forgot to write it down…

Joel     

 

       JOEL F. POTTER-CRUISING YACHT SPECIALIST~L.L.C.

                                           THE  EXPERIENCED AMEL GUY

UNSURPASSED AMEL MARKETING EXPERIENCE AND PRODUCT KNOWLEDGE

                                   Office 954-462-5869  Cell 954-812-2485

 

 

From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io> On Behalf Of Mark McGovern
Sent: Tuesday, October 22, 2019 11:05 AM
To: main@AmelYachtOwners.groups.io
Subject: Re: [AmelYachtOwners] Onan MDKD 6.5kW genset exhaust elbow

 

Karen,

That sure is much different than the elbow on my Onan MDKAV 7kW.  Mine looks much more like the one from Nikimat's MDKAL.  If you do end up replacing yours with a new one, let me know.  I will happily take the old one off your hands to make a jig and will give you a brand new one in return as a spare/replacement.

--
Mark McGovern
SM #440 Cara
Deale, MD USA


Mark Pitt
 

Joel,

   I have an MDKAV in my hull #419.

   Mark Pitt

  Sabbatical III, SM #419, Rhode Island, USA

On 10/22/2019 11:22 AM, amelforme wrote:

The MDKAL pretty much happened on the Millenium edition as an evolution of the previous ONAN MDKD version. I think the last 35 SM 53 had the MDKAV but Olivier would probably know for sure. It might have been the last 50. Forgot to write it down…

Joel     

 

       JOEL F. POTTER-CRUISING YACHT SPECIALIST~L.L.C.

                                           THE  EXPERIENCED AMEL GUY

UNSURPASSED AMEL MARKETING EXPERIENCE AND PRODUCT KNOWLEDGE

                                   Office 954-462-5869  Cell 954-812-2485

 

 

From: main@AmelYachtOwners.groups.io <main@AmelYachtOwners.groups.io> On Behalf Of Mark McGovern
Sent: Tuesday, October 22, 2019 11:05 AM
To: main@AmelYachtOwners.groups.io
Subject: Re: [AmelYachtOwners] Onan MDKD 6.5kW genset exhaust elbow

 

Karen,

That sure is much different than the elbow on my Onan MDKAV 7kW.  Mine looks much more like the one from Nikimat's MDKAL.  If you do end up replacing yours with a new one, let me know.  I will happily take the old one off your hands to make a jig and will give you a brand new one in return as a spare/replacement.

--
Mark McGovern
SM #440 Cara
Deale, MD USA