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repowering my 1655


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#31 Username OFFLINE  

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Posted June 22, 2011 - 07:11 AM

I agree with that. But the initial cost of the diesel and the increased size will negate any savings. Not like there is room for a 3 cylinder if you want to keep the double belt set up and good luck with the pto clutch



There is room for a Kubota 16.5 HP diesel.

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#32 massey driver OFFLINE  

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Posted June 22, 2011 - 07:17 AM

You did a very nice job fitting that Kubota Diesel in there.Looks like it was meant to be in there.Larry

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Posted June 22, 2011 - 07:48 AM

You did a very nice job fitting that Kubota Diesel in there.Looks like it was meant to be in there.Larry


I can't take credit for this as I bought it this way.It also has power steering.

John

#34 massey driver OFFLINE  

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Posted June 22, 2011 - 08:19 AM

I can't take credit for this as I bought it this way.It also has power steering.

John

Do you have any pics of the power steering and how it was put in?? Thanks.Larry

#35 mikebramel OFFLINE  

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Posted June 22, 2011 - 08:21 AM

So how do you shut your attachments off?

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Posted June 22, 2011 - 09:55 AM

Do you have any pics of the power steering and how it was put in?? Thanks.Larry


There is not much to see as the control valve is all hidden from sight.It has a very short shaft maybe 8" and is all enclosed in a housing.You can see the power steering cylinder just below the oil filter in the one pic.It works very well but could stand a little more speed if anything.I have a few pics on my other computer I will post later.I think the engine,steering and seat were from a Jacobsen grounds mower.

#37 Username OFFLINE  

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Posted June 22, 2011 - 09:56 AM

So how do you shut your attachments off?


Just like original with and electric clutch.

#38 mikebramel OFFLINE  

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Posted June 22, 2011 - 12:03 PM

Can you put a picture? Looks like its mounted straight to the flywheel

#39 Username OFFLINE  

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Posted June 22, 2011 - 06:25 PM

zzz 023.jpg

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#40 JDBrian OFFLINE  

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Posted June 23, 2011 - 09:54 AM

Nice diesel repower. Thanks for the pictures.

#41 mac102004 ONLINE  

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Posted June 23, 2011 - 12:14 PM

I think if I was to buy a new garden tractor and had the choice between gas or diesel I'd do diesel all day long. However, when it comes to a repower, I think I'd sooner go gas again. Atleast with the larger 14+ hp tractors. Something like an MF 10 or 12 is a good candidate for a small 1cyl air cooled diesel, wouldnt take Ny extra work than a gas repower. For a 1655 gas is the most practical solution IMO. Not saying it's impossible or cant be done, just generally impractical.

#42 Trump OFFLINE  

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Posted June 23, 2011 - 07:59 PM

where is your fuel tank mounted

#43 Username OFFLINE  

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Posted June 28, 2011 - 07:11 AM

where is your fuel tank mounted


It is about a 1.5 gal and is mounted in the rear.

#44 MF14 plowday special OFFLINE  

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Posted June 28, 2011 - 07:32 AM

John ... now that diesel is real nice !!!

Can I take it for a spin sometime?

Ohhhhh wait I already took it for a spin around your back yard !!!

Didn't know you already joined here

#45 Cvans ONLINE  

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Posted December 29, 2011 - 12:54 AM

I know this is an older thread but there are some interesting questions brought up. As far as the PTO goes, The one in my Bolens can be engaged with the flip of a lever. Uses the same 2 belt pulley's and the same tensioner. The pulley on the crank and the pulley on the PTO lined up with no shimming. With just a little planning things can be made to work.
As far as the cost of the engines goes, I have yet to pay over $475.00 for an engine. Water or air cooled.
The original engine in the Bolens was a 20hp kohler twin cylinder gas engine. I installed a 16hp Kubota twin cylinder diesel. This is rated I believe at 3600 rpm. I'm running a max of 2880 rpm.. I know for a fact that that this diesel will do 50% more work than the gas on 1/2 the fuel. I have yet to stall the diesel with chains on the wheels and the gas engine could be done without a lot of effort without chains under the same circumstances.
Next is the 10hp Wheel Horse. I installed a Lister-Petters 8hp diesel. This was rated at 3000 rpm and I'm running it at 1500. According to Lister it should be putting out 5hp. at this rpm. With the tractor in high range 2nd gear it was impossible to stall the engine. This with over sized new ATV tires. I'm willing to bet that if you took a 15hp gas engine at the same rpm and tried the same stunt the engine would have stalled instantly. Just as a final note. the 5hp diesel ended up destroying the differential on the Wheel Horse.
Horse Power has been a huge sales item for the manufacturers. The truth is that horse power without usable torque is worthless. Torque moves the world.
I don't believe it is practical for all operations such as outboard motors, aircraft, small lawn mowers and other light weight applications but even that is changing. I was not a big follower of diesels until I moved into farm country. After operating diesel and gas tractors side by side it soon became apparent that diesels had a sizable advantage over gas tractors in the field. Trucks, earth moving equipment, ships and the military aren't using diesel because they like spending money on expensive engines. It's because diesel gets more done for less money than gasoline. The rest of the world as well as our own rail companies realized this years ago.
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