Turbo's the Garden Tractor...
02-19-2009, 12:57 PM
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Turbo's the Garden Tractor...
Some of you might remember me asking questions about turbos and talking about putting one on my lawn mower.
I did it back in December and decided I should post it up.
Started out with a John Deere 332 garden tractor built in 1989. It has a 3 cylinder Yanmar 16hp diesel engine in it. I added larger rear ag tires and a 2 speed rearend with differential lock.
Here is the turbo. Its an IHI RHB31. They were used on Suzuki Swifts and Chevy Sprint Turbo cars in the early 90's. I was concerned it was just too big, even though it is the smallest turbo available. I am no longer concerned... read on.
I added a 4 channel theromocouple reader and a tach to the tractor. I am currently using the 4 channels for: Intake Air Temp, EGT, Oil temp and Ambient. This image shows when I had 3 EGT's on each cylinder.
I used the exhaust manifold from a JD skid steer with the same engine to get it pointed up, then made an adaptor to to to the turbo.
I welded a bung on the valve cover for the turbo oil drain. For pressure I teed into the stock pressure sender port and ran a -4an stainless line to the turbo.
I build a "tail pipe" to get the exhaust out the stock location on the tractor. Tig welded stainless steel of course.
It all fits under the stock hood/side panels with no modifications.
I initallly turned up the fuel a minimal amount and saw 4-5 lbs of boost under heavy load with minimal black smoke.
After I turned it up some more it woke up. I am not seeing 10lbs of boost and lots of smoke. The highest EGT I have seen is 1100, but thats at 0 degress F outside. I will probably dial back the fuel some and relocate the air filter before spring/summer.
Everyone likes video right:
I did it back in December and decided I should post it up.
Started out with a John Deere 332 garden tractor built in 1989. It has a 3 cylinder Yanmar 16hp diesel engine in it. I added larger rear ag tires and a 2 speed rearend with differential lock.
Here is the turbo. Its an IHI RHB31. They were used on Suzuki Swifts and Chevy Sprint Turbo cars in the early 90's. I was concerned it was just too big, even though it is the smallest turbo available. I am no longer concerned... read on.
I added a 4 channel theromocouple reader and a tach to the tractor. I am currently using the 4 channels for: Intake Air Temp, EGT, Oil temp and Ambient. This image shows when I had 3 EGT's on each cylinder.
I used the exhaust manifold from a JD skid steer with the same engine to get it pointed up, then made an adaptor to to to the turbo.
I welded a bung on the valve cover for the turbo oil drain. For pressure I teed into the stock pressure sender port and ran a -4an stainless line to the turbo.
I build a "tail pipe" to get the exhaust out the stock location on the tractor. Tig welded stainless steel of course.
It all fits under the stock hood/side panels with no modifications.
I initallly turned up the fuel a minimal amount and saw 4-5 lbs of boost under heavy load with minimal black smoke.
After I turned it up some more it woke up. I am not seeing 10lbs of boost and lots of smoke. The highest EGT I have seen is 1100, but thats at 0 degress F outside. I will probably dial back the fuel some and relocate the air filter before spring/summer.
Everyone likes video right:
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02-20-2009, 08:06 AM
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I can lift the front wheels off the ground on accleration even with the snowblower
I will probably never cut a blade of grass with that tractor, I do use it for running the snowblower, dirt/snow blade, probably put a front end loader on it soon, and pull a moldboard plow.
