Anybody BOMBed a Yanmar?
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Joined: Feb 2006
Posts: 146
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From: nw mo
Originally Posted by G1625S
So I've got this half a p-pump in my garden tractor 
and I've found the high and low idle stops and what I believe to be some kind of fuel rate increase control. When I thread it out, the engine will run up to max revs faster with a little smoke...Since it's HYDRO and linked to the brakes, I can't load it with the brakes to see if she smokes, but if I'm mowin up hill at about 1/3 throttle and run up to WFO, she definitely leaves a healthy haze now 
So, anybody ever tear into one of these little devils? BTW, it's a 1989 430 lawn and garden tractor w/a Yanmar 3cyl diesel---3400 hours strong!
and I've found the high and low idle stops and what I believe to be some kind of fuel rate increase control. When I thread it out, the engine will run up to max revs faster with a little smoke...Since it's HYDRO and linked to the brakes, I can't load it with the brakes to see if she smokes, but if I'm mowin up hill at about 1/3 throttle and run up to WFO, she definitely leaves a healthy haze now So, anybody ever tear into one of these little devils? BTW, it's a 1989 430 lawn and garden tractor w/a Yanmar 3cyl diesel---3400 hours strong!
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Joined: May 2007
Posts: 2,161
Likes: 10
From: Sarasota, FL
Reviving this link....looking to add some hp/tq to my Yanmar 6cyl turbo aftercooled. The setup is almost identical to the 24v VP44 CTD but no electronics, one 12v wire will run it. They're rated @315hp but if I could get them close to 350hp by tuning/pump adj it would make my day!
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Joined: Dec 2003
Posts: 14,672
Likes: 9
From: Montana
I've often thought of upping the hp on a couple of my tractors, especially the ones that aren't quite up to the job and the next one up is a lot bigger than needed.
Then I found out that the drive trains and hydraulics are designed for stock hp.
In the long run it's probably cheaper to just use the right hp tractor for the job than risk tearing up a good machine.
Then I found out that the drive trains and hydraulics are designed for stock hp.
In the long run it's probably cheaper to just use the right hp tractor for the job than risk tearing up a good machine.
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