CK4020SE vs. CK3520SE

[Bill_B]

I am trying to decide between the 35 & the 40. With only $2,000 difference I am leaning towards the 40 HP. I mean,...who doesn't like more power right?
I'm just wondering is there ANYTHING I am missing here? What are the differences between the two engines that makes one 5 HP more?
And why do they make two models that are almost the same exact thing? I would think there is cost associated with making two different models vs. Just one or the other. Are there a lot of people demanding a 40 HP and likewise a lot of people that can't afford the extra $2000?

 

[TractorTYMe]

If you do a little research, it is the exact same model and engine. Just tuning is different.

 

[chevy]

Because they can sell the same exact equipment, with only a different adjustment on a screw & get $2000 more for it.
I chose not to spend the extra money.

 

[Bill_B]

Really? This is true? If that's the case can I buy the 38 and just tweak some stuff to get 40 HP out of it?

 

[ptsg]

No, it's not true for the models you're looking at. Those use common rail engines so there is a different ECM with different tunning for the 35HP and the 40HP.

It would be true for the TYM models that use the Kukje engine, since those have mechanically injected engines and the only the thing that changes between HP is some have a turbo and the fuel screw settings.

 

[Bill_B]

No, it's not true for the models you're looking at. Those use common rail engines so there is a different ECM with different tunning for the 35HP and the 40HP.

It would be true for the TYM models that use the Kukje engine, since those have mechanically injected engines and the only the thing that changes between HP is some have a turbo and the fuel screw settings.

So why don't they just make them all 40 HP? Very odd. So do you think it is worth the extra HP? Can the 5HP be DIY added later? Are they doing head work also maybe?

 

[ptsg]

So why don't they just make them all 40 HP? Very odd. So do you think it is worth the extra HP? Can the 5HP be DIY added later? Are they doing head work also maybe?

Not everyone needs more HP, so they just offer various options since it's pretty easy to do without changing/redesigning anything major on the tractor. That's my theory anyway.

In case of those Kioti models, it might be as simple as changing the ECM, don't know for sure. You may want to check out Michigan Iron Equip website for the parts catalogs and compare both models. They even list the prices of the parts.

EDIT: They don't list the 3520/4020 yet but I checked the 3510/4010 and they actually list the same ECU part number which I find a little bit odd. Anyway, the price for just the ECU is around $2000, so there is the price difference you see between two models.

 

[Bill_B]

Not everyone needs more HP, so they just offer various options since it's pretty easy to do without changing/redesigning anything major on the tractor. That's my theory anyway.

In case of those Kioti models, it might be as simple as changing the ECM, don't know for sure. You may want to check out Michigan Iron Equip website for the parts catalogs and compare both models. They even list the prices of the parts.

EDIT: They don't list the 3520/4020 yet but I checked the 3510/4010 and they actually list the same ECU part number which I find a little bit odd. Anyway, the price for just the ECU is around $2000, so there is the price difference you see between two models.

Very interesting.
I own an HVAC company and discovered a similar situation. I purchase a larger BTU heat pump indoor unit and it costs more. It makes sense...more BTUs must be a bigger unit right? Nope the same exact unit except the control board which tells the unit it is a 12,000 BTU unit rather than a 9,000 BTU unit.
It is a total ripoff. Corporate greed. I complained to my local vendor when I figured this out, but it didn't get me anywhere. I have seen this with other equipment also.
I want as much HP as I can get for this frame size because I am going to pushing a 72" snowblower up hill.
I delt with trying to snowblow with a 70" blower on a 26 HP tractor for the last 18 years or so. I'm not taking any chance of not having enough power this time. But I also don't want to be a sucker paying an $2000 for snake oil.

 

[LouNY]

The Kioti "20" series is interesting when you start comparing the specifications,
especially looking at the HP and weights of the 25 hp, the 35 hp and 40 hp.

 

[Torvy]

$2000 seems a bit much for only 5 additional HP.

I got 9 additional HP for $1500 on my T574. For me the figure on PTO HP was more meaningful. It brought a few more implements into spec.

 

[deezler]

I checked the 3510/4010 and they actually list the same ECU part number which I find a little bit odd.

Makes sense to me, actually. It's the exact same ECU module, why wouldn't it be. Presumably you have to buy one through a dealer; then they will flash the corresponding 35 or 40 HP tune onto it.

We just need someone to uh, borrow a dealer flash-programming tool (probably just plugs into the OBD port under the dash) with a 40 HP tune ready to go, then we could do a mail-it-to-the-next-person for a low fee type thing. Like a chain letter, haha.

I know a lot of us here wouldn't mind the extra 5 HP.

All that said, my 35 HP basically never feels insufficient. It's certainly enough HP for the frame and weight. I doubt the 2610/2620 could drive up my driveway hill in high range at full speed, but my 3510 can (just barely).

 

[yubh8tn]

I debated this and went with the 4010. I didn't want to leave any hp on the table and I haven't regretted that decision. Runs everything including my MX8800 chipping a 8 inch tree without a drop in rpms at all.

 

[LouNY]

And I got the baby of the group the 2620 and it makes the driveway easily in low range, just barely in mid range. Of course none of my tractors can negoitate my driveway and hill in "high" range "high" gear. Between the hill and the curves it might be a tad bit messy.

 

[Bill_B]

Yeah my current 2615 won't drive up my driveway in high...sometimes struggles in med
Pretty pathetic.

It is really frustrating that the 35HP "could be" a 40HP so quickly and easily but the 40 HP is $2k more. If I buy the 40 and then a year later I find put there is a cheap way to make a 35 a 40 I'm gonna be....well not too pleased.

 

[Bill_B]

Makes sense to me, actually. It's the exact same ECU module, why wouldn't it be. Presumably you have to buy one through a dealer; then they will flash the corresponding 35 or 40 HP tune onto it.

We just need someone to uh, borrow a dealer flash-programming tool (probably just plugs into the OBD port under the dash) with a 40 HP tune ready to go, then we could do a mail-it-to-the-next-person for a low fee type thing. Like a chain letter, haha.

I know a lot of us here wouldn't mind the extra 5 HP.

All that said, my 35 HP basically never feels insufficient. It's certainly enough HP for the frame and weight. I doubt the 2610/2620 could drive up my driveway hill in high range at full speed, but my 3510 can (just barely).

I'd pay at least $500 for this service

 

[ptsg]

Makes sense to me, actually. It's the exact same ECU module, why wouldn't it be. Presumably you have to buy one through a dealer; then they will flash the corresponding 35 or 40 HP tune onto it.

We just need someone to uh, borrow a dealer flash-programming tool (probably just plugs into the OBD port under the dash) with a 40 HP tune ready to go, then we could do a mail-it-to-the-next-person for a low fee type thing. Like a chain letter, haha.

I know a lot of us here wouldn't mind the extra 5 HP.

All that said, my 35 HP basically never feels insufficient. It's certainly enough HP for the frame and weight. I doubt the 2610/2620 could drive up my driveway hill in high range at full speed, but my 3510 can (just barely).

Great point. Completely forgot that the dealer is the one flashing the ECU accordingly to the model of the tractor. They pretty much get a blank ECU.

 

[Bill_B]

Just paid for my tractor and snowblower. Paid to get a radio also. Can't wait to get it home!

 

[D&D]

Just paid for my tractor and snowblower. Paid to get a radio also. Can't wait to get it home!

Yay, now that decision is made what’s next? Snow pusher? chains? third function? Grapple choice? Speaker upgrade? Radio upgrade? Rear view camera? Led lights? Grill guard?

 

[Bill_B]

Yay, now that decision is made what’s next? Snow pusher? chains? third function? Grapple choice? Speaker upgrade? Radio upgrade? Rear view camera? Led lights? Grill guard?

I ordered a 72" Meteor rear mount push type blower (drive backwards to use) with hydraulic chute rotation and hydraulic deflector.
Holding off on chains for now.
I got them to throw in the factory radio for free but after watching some YouTube videos I am learning that the stock stereo system is junk.
I thought of having third function installed but I'll probably just do it myself later on if I find it is something I need.
I decided to hold off on chains for now until I try it with the tires that are on it.

 

[deezler]

So wait... did you get the 35 or the 40?

You didn't tell us it was for a cab model! I would have likely said get the extra 5 HP for the weight of the cab and to run the A/C.