Blew up Kubota motor

[ovrszd]

Wish I had some answers for ya.

One thing I do know. Kubota didn't add the expense of balance shafts for no reason.

 

[ptsg]

I dont think the non-balance shaft engines are bored for such.

This is a new twist. I cannot find anything on google as to why balance shafts would be used in ag applications but nothing else for the same engine.

How does one even tell looking external to the engine. I see engines for sale sitting on a skid....matching the part number I need (v2403-m-t-e3b)....how do I even know if it has balance shaft or not?

Usually the engines on Skid-steers are mounted with rubber engine mounts to help with vibrations, while the engines on tractors are totally rigid with whole tractor. Can this be the reason for Kubota to use balance shafts on tractors?

 

[LD1]

Usually the engines on Skid-steers are mounted with rubber engine mounts to help with vibrations, while the engines on tractors are totally rigid with whole tractor. Can this be the reason for Kubota to use balance shafts on tractors?

After talking to sever people....everyone was either industrial only and never seen a v2403 with balancers....or were ag only and never seen one without and stressed the importance of them. And I didn't know Kubota again and Kubota industrial were two separate divisions now. So who knows what else may be different???

But, finally I talked to someone at EPS that is familiar with both engines.

He confirmed. The industrial engines used in compressors, generators, or skidloaders and excavators....all isolated. Rubber mounting, etc. And usually isolated from whatever they are driving too via Lovejoy or similar flexible coupling. So his concern in a tractor with everything totally Ridgid...harmonics and vibrations.

So back to square one. That about rules out all of the new engine options other than dealer.

And at $6k for a reconditioned since I'd be giving up most of my core values.....or $7500 ish for nee dealer motor.....a $9k ish 2wd gear machine with 350 hrs is looking better and better

 

[fried1765]

Just saw an article on the news last night, Cummins is facing trouble with the tariffs - ALL their blocks are imported from China.

Oh....that is just terrible news.
Maybe Cummins will now have to make their blocks in the USA.
Likely, there will be higher prices for blocks, but surely more USA jobs.
Sadly, we have been cheap labor junkies, hooked on cheap Chinese labor.
We need to make more stuff in the USA, and pay accordingly,...... for USA labor!

 

[Sawyer Rob]

CAT makes their blocks in china too, also a LOT of deere "stuff" comes from a china foundry they own too.

SR

 

[TractorGuy]

I haven't read back through your whole thread. Did you see this listing on ebay? The number on the plate isn't identical so I don't know if it fits your need or has the balance shaft. The seller lists the part number you had in a previous post in the information header.

 

[the old grind]

There are more 'v2403s' at the bottom of the ebay page, too.

Does the color, or do the letters after 'v2403' delineate whether they are 'industrial' and with or w/o the balance shafts? Hmmm ...

 

[ericm979]

UGGG.....the quest still continues.

why in the world would kubota design a different engine....with balance shafts....only for ag tractors. Why wouldnt they use the engine already designed to go in skidloaders, industrial stuff, etc.

Perhaps because a tractor engine is solid mounted to the chassis (it's part of the chassis). While an industrial engine can be on rubber mounts. I don't think a balance shaft-less engine would shake itself or the tractor to pieces but it the operator might find it annoying and tiring.

The balance shaft delete doesn't make more power. It's like a lighter flywheel. The engine can accellerate faster because it's accellerating less mass. But constant rpm power is not affected.

 

[ruffdog]

There are more 'v2403s' at the bottom of the ebay page, too.

Does the color, or do the letters after 'v2403' delineate whether they are 'industrial' and with or w/o the balance shafts? Hmmm ...

v2403-m-t-e3b......Here is what those numbers and letters mean.....

Kubota Engine America - ENGINE MODEL NAME IDENTIFICATION

 

[cdb2]

Oh....that is just terrible news.
Maybe Cummins will now have to make their blocks in the USA.
Likely, there will be higher prices for blocks, but surely more USA jobs.
Sadly, we have been cheap labor junkies, hooked on cheap Chinese labor.
We need to make more stuff in the USA, and pay accordingly,...... for USA labor!

Except that's not how the real world works. In the real world, foreign engine manufacturers will continue to make their engines with cheaper steel and with that 25% material cost advantage will undersell Cummins all over the world, costing Cummins revenue and leading to less US jobs. Exactly like happened the last time they put a steel tariff in place and 200,000 Americans lost their manufacturing jobs.

It's well off-topic though, so would be good to discuss over on the existing thread dealing with the tariffs.