Author Topic: Onan 9 MDKAV  (Read 3382 times)

Tanman

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Onan 9 MDKAV
« on: November 02, 2019, 02:58:43 PM »
So I just unexpectedly won an online auction for an Onan 9kw MDKAV marine diesel genset. 1800rpm low hours 3 cylinder Kubota powered. However it needs a raw water supply to run, has anyone tried adapting something like this to stationary use? The inlet is only a 1Ē tube for the raw water intake this heat exchanges with a closed coolant system on the genset. Open to creative ideas and will post pictures once I go pick it up.
Yanmar L100-5KW set
Kubota EA300
Chinese 1115-8KW stamford
96 Suburban 6.5 turbo

32 coupe

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Re: Onan 9 MDKAV
« Reply #1 on: November 02, 2019, 09:51:57 PM »

I have something similar and removed all the marine cooling and use a Honda radiator with a fan.
Works great. The radiator was purchased on Ebay for a few dollars. Aluminum racing part.

The exhaust manifold was replaced with one from a tractor that used the same engine.

When you have to buy the impeller for the raw water pump you will thank yourself.

Metro 6/1 turning a ST 7.5 KW gen head
Changfa 1115 turning a ST 15 KW gen head
Ashwamegh 2/25
John Deere 110 TBL
New Holland TC 30

"I was sitting here reading this thinking what an idiot you are until I realized it was one of my earlier posts !"

32 coupe

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Re: Onan 9 MDKAV
« Reply #2 on: November 03, 2019, 02:48:20 PM »
This is before I installed the exhaust manifold but you get the idea.
You can see I also used the ST type gen head.  It's an early one with good windings and stable voltage.

Most marine units are "ditched"  because the gen head goes bad.

« Last Edit: November 03, 2019, 02:54:59 PM by 32 coupe »
Metro 6/1 turning a ST 7.5 KW gen head
Changfa 1115 turning a ST 15 KW gen head
Ashwamegh 2/25
John Deere 110 TBL
New Holland TC 30

"I was sitting here reading this thinking what an idiot you are until I realized it was one of my earlier posts !"

32 coupe

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Re: Onan 9 MDKAV
« Reply #3 on: November 04, 2019, 04:45:13 AM »
Thanks Glort,
That gen set has a Mitsubishi engine. I think a k3d. I have now install a custom fuel tank as well as gauges
and wiring. I'll try to post a pic tomorrow.
It has about 1000 hrs on it and I got it for nothing with a dead gen head and after checking the cost of a
rewind I decided to build this. I had the st head from another project.

I have a 2 cylinder that has a factory remote head with controls and gauges with only 50 hours but it too has
a bad gen head.  Been looking for a 5kw Stamford clone head for it.

So many projects and so little time.

Gary
Metro 6/1 turning a ST 7.5 KW gen head
Changfa 1115 turning a ST 15 KW gen head
Ashwamegh 2/25
John Deere 110 TBL
New Holland TC 30

"I was sitting here reading this thinking what an idiot you are until I realized it was one of my earlier posts !"

32 coupe

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Re: Onan 9 MDKAV
« Reply #4 on: November 04, 2019, 09:05:03 PM »
Still needs a little more paint work but runs fine. It's been a project for several years now.
No point in getting in a hurry!

« Last Edit: November 04, 2019, 09:08:45 PM by 32 coupe »
Metro 6/1 turning a ST 7.5 KW gen head
Changfa 1115 turning a ST 15 KW gen head
Ashwamegh 2/25
John Deere 110 TBL
New Holland TC 30

"I was sitting here reading this thinking what an idiot you are until I realized it was one of my earlier posts !"

Tanman

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Re: Onan 9 MDKAV
« Reply #5 on: November 05, 2019, 03:31:41 AM »
32 coupe, that is an awesome setup, Iíll post some pics of mine when I get it here. Glort , thanks for the tip Iíll start doing some digging see if I can find some common issues, would you mind asking your brother in law to see what his were and what happened?
« Last Edit: November 05, 2019, 04:39:05 AM by Tanman »
Yanmar L100-5KW set
Kubota EA300
Chinese 1115-8KW stamford
96 Suburban 6.5 turbo

Tanman

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Re: Onan 9 MDKAV
« Reply #6 on: November 13, 2019, 03:15:38 AM »
Got it home today, have to check a few things and hook up some fuel to test it out!
Yanmar L100-5KW set
Kubota EA300
Chinese 1115-8KW stamford
96 Suburban 6.5 turbo