High performance Kubota B7800

[Muleskinner]

I fully agree with Bill on the warranty issue. I don't want to buy an engine!!! Any modification I make will be removable so I can put the stock parts back on.

Interesting comment about modifying the injector pump. I noticed Kubota has a tamper proof wire and lead retainer on the wide open throttle set screw, but nothing on the idle set screw. I also noticed the tach reads up to I belive 3500 RPM, but at wide open throttle the engine stops at 2600 RPM.

What, if any, adjustments can be made to the pump as far as richening up the mixture or changing the pump timing? I know the Dodge boys make modifications to the older, non electronically controlled, Cummins injector pumps. I get a small ammount of black smoke when I'm pulling real hard digging with the FEL or using the rear box scraper.

I've seen some of the modified Dodge trucks pour out the black smoke when taking off from a stop light. My 2001 Dodge Cummings does not, so I know their running a chip or some type of fueling box.

I can't belive Kubota has not set the pump up for emmisions standards. Most likely retarded pump timing and a bit on the lean side.

 

[KubotaSteve]

It would seem to me that if you want more power or torque, go to a larger tractor. These types of mods. are one reason Kubota is very strict on their warranty which makes it difficult someone who has a legitimate warranty claim. Unless you are willing to accept responsibility including financially for you modifications, I would say leave it as is. I'm pretty sure Kubota has done their homework when it comes to R&D. I imagine Kubota has used up their share of engines testing their product and found the limitations they put on the machine to be the best combination of performance and endurance. Just my two cents.

 

[MadDog]

Henro & Muleskinner: Tsk, Tsk. /forums/images/graemlins/grin.gif There are some things that it is better to think (or even do, perhaps) than to write about. /forums/images/graemlins/blush.gif

After all, representative of the big "K" may be listening. /forums/images/graemlins/wink.gif

P.S. 'K" ,if you ARE listening, I have no intentions of making ANY modifications to my new B7800, until the final millisecond of its warranty has expired. Honest, ..... take my word for it.

 

[Rick Jay]

MadDog,

</font><font color="blue" class="small">( P.S. 'K" ,if you ARE listening, I have no intentions of making ANY modifications to my new B7800, until the final millisecond of its warranty has expired. Honest, ..... take my word for it. )</font>

At which time you should head down to your dealer and trade it in for one of the larger L's. It'll probably be cheaper, you'll get 3 more years of warranty and your tractor will gain an additional couple thousand pounds.

For anything I've used my B2910 for, I've never wanted for more power. At times a couple thousand pounds more weight for leverage and/or traction would be nice, but there was always more power than the weight of the tractor could handle.

On the other hand...if we ever do start timing 0-11.9 times, I guess I could see the point. /forums/images/graemlins/grin.gif

~Rick

 

[CTyler]

I dont' know what its' like with tractors but you get a better deal trading in a vehicle before the warrantee expires. Even if its' a day or two before expiration.

 

[MadDog]

Rick: By then, I just may, although I expect to remain satisfied w/the 7800 for some time, and maybe indefinitely.

BTW, where in the Berkshires are you? I am mainly in Randolph, just of Boston, but I have a summer/wkend place in Alford and the 30 acres there are one of the reasons that I bought the 7800.

 

[RobertN]

It's funny, 'cause my Dad would agree with you... He had the fastest car/truck in the Sacramento area for a while back in the '59-'61 time frame. Course, he'd build motors for the Stock Car, run for a week or two in the car, and then build a new one. He drop the old one in his '32 Ford p'up.

Now, he doesn't even like to change to fancy tires and rims. Leave it stock, less problems...

There is soooo much out there in aftermarket for cars, pickups, ect. People have been hopping up anything with wheels on em for years. Guess tractors are a natural extension of that /forums/images/graemlins/ooo.gif

 

[Rick Jay]

MadDog,

You easterners....geeze...everything west of 495 is "the Berkshires!" /forums/images/graemlins/grin.gif

Actually, the town we live in is called "Feeding Hills", it's a part of Agawam (Now famous for "Six Flags New England"), and it's just on the other side of the Connecticut River from Springfield.

I use the "Western Massachusetts" notation 'cause I lump everything east of 495 as Boston. /forums/images/graemlins/grin.gif

Most of us out here aren't too crazy about Boston...or more specifically, the politicians in Boston. /forums/images/graemlins/smirk.gif

I'll wave if I ever see a B7800 on the Mass. Pike. /forums/images/graemlins/grin.gif

Take care,

~Rick

 

[MadDog]

Thanks, Rick. I've generally viewed everything west of the Ct. River as "Western Mass" and everthing between that and 495 as "central" so I guess that we're roughly on the same page.

Looks like will probably take delivery in a couple of weeks. I'm really lookin' forward to it.