Increasing Horsepower

[EastTnFarmboy]

I seriously considered moving up to the L5740 when I bought my L5240. However, I came to the conclusion that I would run out of traction with the R4s long before I ran out of horsepower. So far, that has proven to be the case. The extra money I saved was spent on a grapple, and I certainly have seen the benefit of it.

 

[Lil43]

Mechanical is good, regular guys can work on them with regular tools.

But if I am correct I can adjust my JD 4310 and effectively get a JD 4410?

A 4310 and a 4410 dont have the same displacement engine
4310 = 91 cubic inch
4410 = 101 cubic inch

 

[scott_vt]

With my tractor, 10 extra hp would get me absolutely nothin'. It will already spin the tires, pop the HST relief valve, pop the hydraulic pressure relief valve, and snap shearbolts on PTO implements like they were toothpicks. If I increased my hp, all I'd gain is braggin' rights and a bigger fuel bill.

Remember, a 90 lb kid can snap a 6 lb test fishin' line just as easy as 200 lb man. It ain't so much the power as the finesse.

Afternoon Jim,
Well I certainly cant relate to the larger AG tractors but if talking about CUTS I have to agree, albeit Im relating to a geared machine but I have routinely spun all four tires plowing into a pile of dirt with the FEL ! So if I had another 5 HP under the hood of that tractor it surely wouldnt amount to a hill of beans !

 

[MtnViewRanch]

Afternoon Jim,
Well I certainly cant relate to the larger AG tractors but if talking about CUTS I have to agree, albeit Im relating to a geared machine but I have routinely spun all four tires plowing into a pile of dirt with the FEL ! So if I had another 5 HP under the hood of that tractor it surely wouldnt amount to a hill of beans !

I think that the higher hp engines in the same frame size tractors is usually intended for pto work. Don't know that for a fact, only my opinion.

 

[RegL]

Just a short note on injection pumps. We have turned many up for are farmers for tractor pulling, making 130 horsepower tractors 230 has not been a problem for many of them. What we did find out was that if they went out and did their chores in the same gear as before and the same throttle settingthey did not burn anymore fuel then they did before!
With a carburator if you were to rejet the whole is bigger so more fuel is going through it tht is all there is to it.

Does adjusting the injection pumps only apply to bigger engines? My Power Trac has a 30hp deutz. It would be nice to get 35hp out of it at times.

 

[Tororider]

Not looking to spin tires, looking for a bit more power for the pto, would help out on the chipper mostly, wouldn't hurt for clearing brush with the brush hog either.

 

[Adam23]

Would love to know how to do this on the smaller (21 HP) Kubota engines. Would be nice to have 3-6 more HP at the PTO for bush hog and tiller work!

 

[Tororider]

I would call your Bota dealer. My uncle had his JD 4310 upped a bit, which is what we are looking to do. Talked to our local JD dealer and they said that they can do it for us as well. They hook up a dynamometer and then adjust the injector nosel, I think. I think they wanted $125ish. Voids warranty if you have any left.

 

[art]

Does adjusting the injection pumps only apply to bigger engines? My Power Trac has a 30hp deutz. It would be nice to get 35hp out of it at times.

It applies to all diesel engines. Many of the newer pumps are harder to adjust to maintain emmisions but many can still be adjusted some.

 

[Villengineer]

I have a JD 750 that I'd like to bump the power up on to help it run my tiller. I have the tech manual, but I can't find anywhere in it about a screw that I can adjust to change the injector pump performance. Does anybody have any experience with these Yanmar engines that can point me in the right direction? I know there has to be at least 4 easy HP somewhere as the 650 (basically a 2 cyl version of the 750) was rated at 16/14.8pto HP and the 750 at 20/18pto HP. Since the injectors, cr, bore, and stroke are all the same, I would think that the 3 cyl should be able to make about 24HP with hardly any mods at all. Any ideas?

 

[brickMan]

My NH TC35d 2000 was a great used deal. But I'm down about 3 pto hp for some of the work. No one has mentioned these shiabura engines (NH, CASE).
Any ideas about fiddling with them to get some of the same small mods?

 

[Soundguy]

Why do you think you are down about 3hp?

Soundguy

 

[brickMan]

My NH TC35d 2000 was a great used deal. But I'm down about 3 pto hp for some of the work. No one has mentioned these shiabura engines (NH, CASE).
Any ideas about fiddling with them to get some of the same small mods?

Did some research in my shop manuals.

It appears that Injection Pump timing is a straight-forward, if very involved, process. The overview specs show 18 degrees as timing set, but the fuel section shows a range of 17-19. If my current is at 17 and I increase it to 19 I get an 11% increase in flow-time; they call this "spill-timing". Not sure this would be noticeable.

The TC45D ( a 4 cyl) has the same timing and the same tomato can specs (cyl). The TC40D has 4 cyl has a shorter stroke, but longer timing; up to 21 degrees; with the low at the same as my high; 19 degrees.

So. All compression ratios are the same. [These are diesels]. QUESTION: If the smaller cylinder can handle more fuel...does this mean if I add spill timing breadth to my larger cylinder I get a less clean burn, and thereby no effective power improvements?

Or do I have the whole thing backwards??

 

[brickMan]

Why do you think you are down about 3hp?

Soundguy

I can't bushog low with a 6 foot. I can bushhog high with a 5 foot. But I bog down even at slow speeds on a mild incline. The specs show me at 27.7 due to HST; and my understanding is that 30 would be a reasonable output for the 6 ft bushog

 

[Soundguy]

If it's a no-go at 27.. I don't think 30 is gonna pass with flying colors... JMHO

Soundguy

 

[brickMan]

If it's a no-go at 27.. I don't think 30 is gonna pass with flying colors... JMHO

Soundguy

Worth hearing SoundGuy. So 32 would be better. Maybe. And if the machine runs a 80% engine/pto ratio I would need 40 engine horsepower.

Back to the thread - 40 would be a 14% increase over stock. Is all this talk about injection pump pressure or timing able to do this as a reliable, as opposed to "hot", mod? Note: I don't think I can do anything about pressure as that would make the timing fuzzy...at least at the injector level.

brickMan

 

[art]

Does adjusting the injection pumps only apply to bigger engines? My Power Trac has a 30hp deutz. It would be nice to get 35hp out of it at times.

I'd say you are asking for too much but if you don't try you won't know! Many will only allow about ten percent increase.

 

[MikeD74T]

A long time diesel mechanic told me that diesel engine life can be rated in gallons, the quicker you burn the fuel the nearer you are to end of life. Whenever someone wanted more power from their truck he made sure they understood the risk of turning up the pumps. Probably like getting 3000hp out of a big block Chevy & having to rebuild it every 1320 feet. MikeD74T

 

[brickMan]

A long time diesel mechanic told me that diesel engine life can be rated in gallons, the quicker you burn the fuel the nearer you are to end of life. Whenever someone wanted more power from their truck he made sure they understood the risk of turning up the pumps. Probably like getting 3000hp out of a big block Chevy & having to rebuild it every 1320 feet. MikeD74T

Yeah, but my body's service life beats the Chevy, whereas the tractors around here beat my nephew's.

 

[whitetiger]

[ quote)Take the TW series tractors ,105-197hp ,Same engine just turbo and intercooler differences,[/quote]

All TW series engines are not the same, severial major differences in them like valves, heads, pistons, rods, crank shaft, flywheel, injectors, intake manifold, exhaust manifold to name a few.