New L2501 seems really loud! Suggestions?

[ProjectKing]

Well I just got a new L2501 with front loader and backhoe. The engine seems really loud! The exhaust has a metallic rattle sound to it. My L3830 is much quieter sounding.

Using a dosimeter app on my phone I measured around 92 db at 1700 RPM. My L3830 is running around 90 db. The L2501 has a harsh exhaust note like a hammer hitting an anvil.

I'm curious if anyone else thinks their L2501, L3301, or L3901 is loud. I'm planning to drive another L2501 at dealer when I head down
there.

One thing to note. The tractor has off-road diesel in it. Not sure if that would make it run louder or not.

I've attached a pic of my two Kubota since we all like pics!

 

[BCrouse]

I have a 3301. The only thing thats loud is the HST on mine and that is "normal whine"

 

[ProjectKing]

I have a 3301. The only thing thats loud is the HST on mine and that is "normal whine"

Yes my HST doesn't seem that bad. It whines some but nothing outrageous. Do you feel like you need earplugs when operating your tractor?

 

[BCrouse]

Yes my HST doesn't seem that bad. It whines some but nothing outrageous. Do you feel like you need earplugs when operating your tractor?

Yah I try to all the time. My ears already ring 24/7 so anything I can do to keep additional damage I try to.

That said I have run it sans earpro. Its not horrible at low rpm stuff but after awhile at higher rpm (2000rpm+) its loud enough to notice I should have been wearing earpro

 

[ProjectKing]

Found this video on YouTube. This one sounds a lot like mine! Hear how harsh the exhaust is?

2015 KUBOTA L2501HST For Sale - YouTube

 

[BCrouse]

That kinda sounds normal.

When I get a hot moment here I can record mine. Wont be for a few days though.

 

[ProjectKing]

That kinda sounds normal.

When I get a hot moment here I can record mine. Wont be for a few days though.

Okay sounds good. I'll be making a video series for mine soon

 

[Fallon]

Dyed off-road diesel is just normal diesel with a little red dye in it to indicate no road usage taxes have been paid on it (don't ever get caught with it in a road vehicle) The red dye doesn't affect performance or combustion in any noticable way at all.

 

[ProjectKing]

Dyed off-road diesel is just normal diesel with a little red dye in it to indicate no road usage taxes have been paid on it (don't ever get caught with it in a road vehicle) The red dye doesn't affect performance or combustion in any noticable way at all.

I thought off road diesel had higher sulfur content.

 

[BCrouse]

I thought off road diesel had higher sulfur content.

No. its the exact same diesel as on-road but has a crapton(technical term) of red dye in it. If you bought it recently its ULSD+dye to indicate its non-road taxed diesel. Thats it.

 

[Brazos by Nemo]

My L2501DT does not seem loud but I do not have another tractor to compare it to like you do. I don't have HST so no whine, just the diesel motor. It does have a rattle around 1500 rpm and only around that rpm. Lower or higher than 1500 rpm it goes away.when I hear the rattle I just push the throttle a little to move past it.

 

[ProjectKing]

My L2501DT does not seem loud but I do not have another tractor to compare it to like you do. I don't have HST so no whine, just the diesel motor. It does have a rattle around 1500 rpm and only around that rpm. Lower or higher than 1500 rpm it goes away.when I hear the rattle I just push the throttle a little to move past it.

Thank you for the info! (0:

 

[jeff9366]

Hearing damage is cumulative.

I suggest ear muffs or ear plugs. I wear one or the other when operating my tractor. eBay is a particularly good source for ear plugs.

Beginning in mid-60's you pay out-of-pocket for cumulative hearing disregard during younger years .

 

[ProjectKing]

Hearing damage is cumulative.

I suggest ear muffs or ear plugs. I wear one or the other when operating my tractor. eBay is a particularly good source for ear plugs.

Beginning in mid-60's you pay for cumulative hearing abuse during younger years out-of-pocket.

Didn't know earplugs were on eBay! Will have to check it out. I wear them running my ZD326. Now that's a loud machine!

 

[jeff9366]

I have used multiple brands and types of ear plugs. I have found flanged/tapered ear plugs to be considerably more effective than foam cylinders.

These are my current favorites. Ten sets / $11.

Fit/comfort of ear plugs is highly individual.

LINK: ULTRAFIT REUSABLE EAR PLUG 3M E.A.R. 34-44 WITH CORD | eBay

 

[B2400]

I have noticed at idle, my new B2650 seemed louder than my older B2400. The 2650 is more open around sides of engine, whereas my 2400 was pretty much enclosed. The new one is still pretty quiet though, neighbor asked what it had for engine as he couldn't hear it running when I was mowing the yard!!

 

[ProjectKing]

I have noticed at idle, my new B2650 seemed louder than my older B2400. The 2650 is more open around sides of engine, whereas my 2400 was pretty much enclosed. The new one is still pretty quiet though, neighbor asked what it had for engine as he couldn't hear it running when I was mowing the yard!!

That's interesting. Maybe Kubota is cutting back on noise dampening. Ear plugs are gonna be a must. Not so with my L3830

 

[robert421960]

I have an L3301 at work and one at home and both HST are way louder than our old B2710 HST

 

[gwstang]

My L2501DT is not quite as loud as the video. I would ask the dealer if he could stop by your house/place one day when he is nearby and take a listen just to be sure. This is my first diesel and it is louder than my old Ford 8N that has a newer muffler on it. I use the full cover type of headphones (like the one's for shooting guns) that has a built in radio and just turn it on when riding the diesel. The first time I used my 5' finishing mower, good Lord...I thought I was completely deaf when I finished. Never again without hearing protecting. Three blades whirring close behind is a lot more noise than the diesel.

 

[Indian MC]

I have the B2601 and it is quieter. Watching the video, I noticed the gray area on the side of the engine hood has more engine area exposed than on the 2601. Mine stops about 3" or so above the frame. There could be more engine noise escaping with your machine.