Turbo for X900?

Bulldog53

New member
Spoke with a gentleman at Wiedmann Beothers, and was very satisfied with the information on there turbo kit for the x900. Let’s face it friends , great machine but a complete dog going up hills hauling any sizable load. Like to here any feedback anyone can offer on this subject .
 

Alaskanassasin

Senior Member
Site Supporter
I do not have a turbo, but I feel your pain and thought what you were thinking. It seems like and I could be wrong but most of the people that have a turbo use it to compensate for less oxygen in higher altitudes, like Denver for instance.
In General the over all feeling I got on turbos was that it did noticeably improve performance.
That is not enough for me to drop the money. Personally I have come to terms with the fact that my RTV is a tool and a damn good one but like most tools one can't do it all. That being said where I live the geography completely flat, I cant even think of a hill to test the RTVs ability on! If I lived in hill country I would probably buy something that can rip up them.
Hopefully this helps a bit!
 
We are new to the RTV and are in severe hills. On friday we get our throttle seperation kit, wonder if that wouldn't be a good place to start before a 2K investment (without labor).
 
So one other note from me on this. Hydrostatic and Diesel works differently than a transmission and gas. You want to get up a hill with gas you mash the pedal. If you do this seperation, if you want to get up the hill you go full throttle but as you slow down you LET OFF the floor pedal, leaving the engine wrapped up. Hydrostatic has its most torq at the very beginning of the pedal push, not at the end like a car. I think this is why so many people don't get the RTV. It is a bit counter intuitive. I have had my RTV for only a week or two but it makes perfect sense due to me having a tractor with an identical hydro system.
 

Lee1935

Active member
We are new to the RTV and are in severe hills. On friday we get our throttle seperation kit, wonder if that wouldn't be a good place to start before a 2K investment (without labor).

A visit to a dealer that has a good wrench turner adjust the transmission to specs is well worthwhile
 
K7591-99450 $99 from Messick plus $18.66 for shipping. Could have got it at the local dealer for the same price I found out later. Not bagging on Messick, they have great prices. But my local dealer whom I do not really like is feeling the competition and lowering their prices.
 
A visit to a dealer that has a good wrench turner adjust the transmission to specs is well worthwhile

Yeah, thats the rub. Gotta find a good Kubota Mechanic in my hood and none seem that strong. The dealers say they sell a ton of the RTV's but I have to say I never see one in our area.
 

Ohio_Pawpaw_Grower

Member
Site Supporter
I tried to find the article I read some time ago. But in the interest of time, here goes: In addition to installing a turbo, you would need to make the associated adjustments or modifications to your injectors (more air needs more fuel). If you move forward, I would love to hear how this works for you. But thought you would like to know there may be more to it. Good luck.
 

foxalaska

Active member
There's more to turbocharging than just bolting one on. Compression ratios, after cooling, fuel settings, ect. I would love to get a few more ponies out my 1100, but not at the expense of engine reliability. A simple liter/HP ratio comparison with very dependable turbo engines say there is safe room for HP improvements. After cooling is a must to get full benefit of a turbo.
 

Alaskanassasin

Senior Member
Site Supporter
There's more to turbocharging than just bolting one on. Compression ratios, after cooling, fuel settings, ect. I would love to get a few more ponies out my 1100, but not at the expense of engine reliability. A simple liter/HP ratio comparison with very dependable turbo engines say there is safe room for HP improvements. After cooling is a must to get full benefit of a turbo.

From one alaskan to a another... Compression ratio? can you change compression ratio with out major surgery?
 

ovrszd

Well-known member
Not that I'm aware of.

Turboing this engine without proper tuning will result in engine failure.
 

foxalaska

Active member
From one alaskan to a another... Compression ratio? can you change compression ratio with out major surgery?

Different pistons. In the early years, when Cummins was turbocharging naturally aspirated engines, they changed to turbo pistons to lower compression ratios. Also piston coolers were being added at the same time, which required different pistons. After-cooling was added later, which become the NTC series. Prior to after-cooling and piston coolers, pyrometers was a vital monitor for operating the engine. A heavy foot could quickly melt one down.
 

Popo1945

Member
I put a throttle kit (got it from Kubota) on my 04 900 - bolts right on. There's a spot for it right by the dump control. I don't remember what the cost was.
 

Popo1945

Member
I bought a turbo from Turbo Kits. It came with detailed instruction for the install, fuel enrichment & trans adjustment. I haven't done the install yet - too cold (I don't have a heated workshop yet). I'll keep you posted on how the install goes.
 

Alaskanassasin

Senior Member
Site Supporter
I bought a turbo from Turbo Kits. It came with detailed instruction for the install, fuel enrichment & trans adjustment. I haven't done the install yet - too cold (I don't have a heated workshop yet). I'll keep you posted on how the install goes.

Cool! keep us posted, I know a few of us on this forum are interested in the performance results of adding a turbo.
 

aurthuritis

Site Supporter
Site Supporter
does Kubota offer a factory turbo model?"i thought they did" and i think it has higher compression and piston jets. now if you had that engine i would say you could probably stress the transmission.
 

aurthuritis

Site Supporter
Site Supporter
A visit to a dealer that has a good wrench turner adjust the transmission to specs is well worthwhile

i agree. i think from my own experience that these are set up from the factory to be derated and all over the place. if my machine was in warranty i would first get the dealer to get the RPM to factory spec with a GOOD TACH. then after the warranty was over i would have it adjusted to pre tier 4 spec. as far as the transmission i would have the dealer get the correct tools and gauges and get the transmission in spec and not over. if my machine wasn't under warranty then any GOOD hydro transmission specialist could probably do a better job. :elephantRear:
 
Top