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It's been on the machine for 1000hrs. I haven't put a boost gauge on yet. My bigger concern at the moment is the shaking at low to moderate rpm....previous owner said it had done that for him. It's bad enough that it's uncomfortable to drive at anything but high rpms. Could it be a timing...

Turbo install manual recommends adjustment of screws in first two pics. Another site recommended turning up screw under cover on last pic, but the manual doesn’t mention anything about this one. Can anyone shed any light on the matter? Thanks

New to me rtv x1100c came with a sfsspecialties turbo kit installed. Performance is sluggish at best and a low to moderate rpms the engine vibrates significantly. With the fuel shutoff disconnected, the engine comperssions sound very even. Engine starts very well. I'm wondering if the...

Got it fixed! The motor was toast so definately needed a new one, but the low pressure problem after it was replaced was a stuck anti-cavitation valve. I had to clean it up a bit so that it would move freely. I think that it was not able to fully close so that it could only build 200psi...

If the servo was stuck so it couldn't move the pump swash plate much could this cause the low pressure issue?

I pulled the tank screen out. It had some gunk on it, but was certainly not very restricted. There was however, some metal pieces in the bottom of the tank... Pulled the tranny apart again. Can't see anything amiss. Pulled all of the valves out of the valve body to check them. Nothing...

There is a screen in there. I haven't had a look at it.

The motor valve block it $1k so I hope it's not that. It looked like new so I doubt it.

I swapped the valve that the brake runs with my other machine. No change. I'll pull the coast valve out and have a look. Thanks for the suggestion.

The smaller plate was definately scored. The larger one doesn't apear to have any scoring, but they were both replaced with new ones anyway. There appeared to be the reamains of assembly lube in the tranny, but it was more like vaseline....assembly lube I've used dissolves in oil. I'm...

Here is a pic of the old plates

Spec for charge pump is 62-120psi. This one was only about 5psi lower than my other unit that runs great. It has fresh kubota udt premium fluid in it

That's correct I did not replace the motor valve block. I could see no damage on it. I'm wondering about a stuck check valve or something similar....

I do not know if either of those have been messed with....not by me.

I replaced the entire valve block as well as the brass plates

Kubota parts calls this piece a valve block. Looks like someone took a grinder to one of the pistons... The plates that the rear of the valve block rides against are both brand new. The old one was scored.

New to me RTV x1100c. Will not rotate tires unless they are off the ground. Took the HST apart and found one of the hst pump (valve block) plungers in bad shape. Replaced it with a new pump (valve block). The motor valve block appeared to be in good shape. Replaced both motor and pump valve...

Has anyone had any luck removing the engine of an RTV900 without removing the engine/transmission assembly?

Just bought a 2015 x1100c with 2000hrs. If I put my foot to the floor, you can feel the machine just barely try to move. With the wheels jacked up off the ground they do turn. Main hyd tank was low on oil. Added some. Changed hst and suction filters. Checked unload valve wasn't pressed...

Does anyone know what kubota did to get more top speed out of the x1120?