Anyone see it on the website yet? I must have missed it...Hey guys I’m back it’s been a minute! The time has come to release a full turbo kit. This will be available to purchase on our website 4Nmotorsport.com in the next two weeks.
I have now pushed this tractor over 350hours with the turbo and it’s Making an estimated 40-45hp with no issues. I will have two options for the kit. You will be able to purchase with a full 304l stainless tig welded exhaust either straight pipe or I can include a 2.5 muffler with a turn down. I will have some pics up here shortly of the full kit.
My apologies for being absent on this forum. I almost lost everything to the Caldor fire out here in California last year. it definitely wasn’t fun and slowed me down quite a bit but I am back at it making turbo kits
L2501 Modifications
- Thread starter Mikemoto17
- Start date
I found the highest temp when I was feathering the pedal on the HST (I know you have gear) to see only about 200rpm of bog. If I let is bog as far down as what you're seeing, my temps actually went down. Not sure how you could duplicate with a gear-drive using just elevation change. Ideally, we'd all be testing @ the PTO with something that we could infinitely adjust the drag with, like a dyno. I've been keeping my eye out for a PTO-driven generator at a good price to use with some resistive heaters.
Thx again for sharing.
whats up my l2501 brother, good to hear from you again!
keep those mods and videos coming... great work!
Not a 2501 but I turbo'd my b2910 over the winter of 2020. It has about 100 hours with the turbo without any issues. Hat tip to Greenacresnorth who provided some guidance along the way while I was building and tuning.
I found a junked out Jacobs golf course mower with a 1505T and snagged most of the parts off it. I used fresh kubota parts where possible for some missing pieces. Swapped over the exhaust mani, intake mani, injector lines, compressor outlet pipes. Pulled a shim to put timing at ~20. I used a slightly modified Bobcat turbine outlet and exhaust pipe and made up my own intake. No welding was required this was 100% bolt on affair.
I have it fueled conservatively to get about 7-9 psi boost. EGT gauge is definitely a must have when tuning. I keep it under 1100* at all times. It really doesn't kick in that often, only if you are really pushing into a pile or going uphill fast. It's fun with a 6 foot finish mower it will plow through 3ft grass like butter. Healthy stock cooling system has no problem with it.
I may send the turbo out this winter to see if they can improve on it for power. The turbo is a TD 025 mhi. Tiny thing.
Let's see some more boosted kubota's around here.
I found a junked out Jacobs golf course mower with a 1505T and snagged most of the parts off it. I used fresh kubota parts where possible for some missing pieces. Swapped over the exhaust mani, intake mani, injector lines, compressor outlet pipes. Pulled a shim to put timing at ~20. I used a slightly modified Bobcat turbine outlet and exhaust pipe and made up my own intake. No welding was required this was 100% bolt on affair.
I have it fueled conservatively to get about 7-9 psi boost. EGT gauge is definitely a must have when tuning. I keep it under 1100* at all times. It really doesn't kick in that often, only if you are really pushing into a pile or going uphill fast. It's fun with a 6 foot finish mower it will plow through 3ft grass like butter. Healthy stock cooling system has no problem with it.
I may send the turbo out this winter to see if they can improve on it for power. The turbo is a TD 025 mhi. Tiny thing.
Let's see some more boosted kubota's around here.
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Love it, I have a few really small ihi turbos off some little Isuzu diesels laying around. Keep eying them up for the B7510... real estate is a premium on those little tractors. But I think if I ditch the muffler and run a 2 piece stack out the hood it may be doable....
I’m getting closer on my L2501. I finally have all the tubing and tools I’ve been waiting for. I should have everything fitted and finished by the end of the month.
Mike
Mike
If you have any questions as you go i might have some insight. It's not that hard at all if you can get a drain line figured out without pulling your whole rig apart.
Much appreciated!
I’m not anticipating any issues with the fabrication or installation. While my resume may be lacking, I have a former Indy car engineer, mechanic and fabricator lending a hand with a long list of accomplishments in land-speed and hot rod gas/diesel building. Him and I have worked together on projects before.
I’m looking forward to getting this project completed. Just need to find some time in the schedule.
Mike
What's the PTO rating on that from factory? How much did they charge to test it?
I am very curious as to what mine is pulling. Thanks for sharing this.
I am very curious as to what mine is pulling. Thanks for sharing this.
Very, very impressive gains here. The torque is amazing!
And yes, please post the costs related to the PTO dyno session!
I can't wait to see what my Turbo setup makes!
The L2501 factory PTO HP for 'gear drive' is 20.5 and 'HST' is 19.
He has a gear drive so 20.5 HP from the factory.
Mike
Keep in mind that's only injection pump timing. All shims removed and sealed with gasket sealer. Not my video.
Ok, I am building a house and pole barn. So for now I store my L2501 in a shed on my property and have to fold the ROPs each time. I hated the bolts. Easy mod.
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Finally…the Turbo installation has begun! Right now, I’ve only removed the loader, hood and exhaust but, the fabrication will begin tomorrow. I already have most of the materials I’ll need however, as with any project, I know there will be some fittings, clamps, hoses and additional miscellaneous parts needed before it’s done. Regardless, it feels great to get things moving.
Mike
finally... dino results! PTO grained HP, just as i suspected!
was on TBN (like OTT better) debating with a member about this exact subject. this is where i see the biggest grains (check out my post #129). with the PTO in the 25-27 HP range, think its safe to say, that the engine is in the ~32 HP range.
i have to agree with @NetMagi, leaving the smallest shim in vs using gasket sealer is pretty much a wash. removing the thickest shim/shims AND opening up the fuel go hand in hand for the D1703 mod. im luv'n mine!
