More power?

[JSUnlimited]

Although the answer is to buy a bigger tractor, in all seriousness was wondering something.

Is there anyway to "tweak" a little more power of of these little diesel engines?

How could a guy get more dependable power from one of these little engines? Injection timing, exhaust, turbo, what?

 

[wushaw]

I'm just wondering why you need more power. I will spin the tires before the engine bogs.

 

[uhmgawa]

</font><font color="blue" class="small">( Is there anyway to "tweak" a little more power of of these little diesel engines?)</font>

Perhaps but you will then be in a position to find the next
"weakest link" in the power train. Hopefully it will be in
an inexpensive location.

 

[TillerofdaEarth]

If your warranty is expired, you can always crank up the fuel injection pump a tad. Just ask your friendly Diesel Mechanic how to make the adjustment, and don't do to much. You just need to weigh out the risks versus rewards by doing this.

 

[3RRL]

There were a couple of threads on the subject. I ended up making a slight injector pump change and got a snappier response and a little more power. Not being a diesel mechanic, I was afraid to do much and only made minor adjustments.

THIS is one of the links, if you're interested.

 

[slowrev]

Yes you can crank up the injectors, and if you go too far it can become an expensive tweak. I would also suspect a somewhat shorter engine life with smaller tweaks...
I just try to keep my engines running per manufacturers specs, things seem happier that way /forums/images/graemlins/smile.gif
Ben

 

[RalphVa]

Switching to synthetic oil will give you 3-4% more power (and about that much less fuel consumption). That's why the racer drivers like it.

Ralph

 

[JSUnlimited]

I was just wondering. It seems that I always try to find ways to make something just a little better.

I usually run out of power before traction. I noticed that under loads, I don't get much black smoke as I would have thought. My old Kubota which was 7hp less than this NH would blow the black smoke and it seems as though it had much more power than this NH does.

 

[Cord]

I just mounted a turbo on my little 13hp Yanmar. I havn't finished the installation yet, but the turbo is mounted. The next step will be to measure the exhaust temps with engine naturally aspirated and compare those temps to the turbo charged engine. I can then add fuel to matain the temps. My biggest problem was trying to find a small enough turbo. I found a tiny one (easily fits in my palm) but initial results are suggesting that it's still too large.

I can tell you that just adding fuel to a naturally aspirated engine will give you higher exhaust temps. The temps need to stay below 1100 degrees sustained or damage will result. To bring the temps down, you need to add air. This is easily done on a turbo charged engine by adjusting the wastegate. There isn't much you can do on a naturally aspirated engine to increase the airflow. The black smoke is unburned wasted fuel. To continuously make black smoke is just wasting money. However, diesels will often smoke black when they run rich in anticipation of boost. If you do fiddle with the pump, keep track of your changes and try to keep the engine from smoking.

 

[Dmace]

</font><font color="blue" class="small">( To bring the temps down, you need to add air. This is easily done on a turbo charged engine by adjusting the wastegate. )</font>

Technically, you are not going to get lower exhaust temps by adding air with a turbocharger, unless you run an intercooler also.
A turbocharger is just a small air compressor and as you compress the air it gets hotter. This hot air charge needs to be cooled before entering the engine or else your just forcing more hot air into the engine.

I would not touch any factory settings or use any add-ons like turbos unless they are factory. If you need more HP, then buy a bigger tractor.
If you just want a little boost, run synthetic oils and double the dosage of Power Service (White Bottle) and use it all year long as a de-geller and an octane booster.

 

[SacandagaBrad]

</font><font color="blue" class="small">( I usually run out of power before traction. )</font>

I have the same machine and same experience, but more from the standpoint of getting the power to the wheels. I started a lengthy thread on the whole thing quite a while ago. I wish there was a way to make the hydro more like a gear tranny where it would either spin the wheels or stall the engine in low range, then at least you would know all the power was being used. Mine just stops under good traction conditions with little drop in the rpms. Its still a lot of force pushing a load, but there should be more.

Happy New Year!

Brad

 

[5030]

When you say 1100' is that at the hot side of the turbo or the cold side. You need a pyrometer with the probe on the hot side between the exhaust port and the turbo housing. 1100' continuous even on the hot side will do nasty things to your piston crowns even if they aren't cooled on the underside by oil jets which I suspect they aren't. Your small turbo will spool up extremely fast. It was probably designed for a gas engine, most probably a 4 cylinder auto engine.

I have a feeling that your little 13 horse Yanmar isn't going to last very long. I think we went through this discussion some time ago, but, the engine isn't enternally strong enough to withstand a supercharger of any sort. At the very least you need to machine a spacer plate to lower the static compression ratio or it will self-destruct as soon as you put a load on the engine.

If you want more power, get a bigger tractor. Don't try to whip it out of your little Yanmar, she won't last any time at all.

The old saying goes "There is no substitute for displacement"

I have an ominous feeling that you are going to wind up with a 55 gallon drum of scrap engine parts. /forums/images/graemlins/frown.gif

 

[wushaw]

</font><font color="blue" class="small">( I was just wondering. It seems that I always try to find ways to make something just a little better.

I usually run out of power before traction. I noticed that under loads, I don't get much black smoke as I would have thought. My old Kubota which was 7hp less than this NH would blow the black smoke and it seems as though it had much more power than this NH does. )</font>

It would seem that the hydro has a pressure relief valve of some sort and not allowing the use of full engine potental.

The Kubota and NH obviously has designed their hydros a little different and since you have owned both you now have a pretty good idea on which one puts more power to the ground or has the ability to use all the engine torque/hp.

 

[justanotherjoe]

Some old Yanmars used different engines in the same chassis. The higher HP one was not an upgrade, it was a different model number when the rest of the tractor was the still the same.

Nine years ago, a Bobcat 553 had 19.5 HP, now it's 25 HP. That is a big change for the same size of equipment.

 

[dieselcrawler]

I found this thread looking for info on adding a turbo to my yanmar 3TNV82A powered John Deere 3005 when the warrenty runs out.

I have added a turbo to my ol mud truck with no ill effects. If boost and EGT are kept within reason and you don't try to treat a tractor designed for 27 hp (as in my case) like it has double that you should be ok.

And I'm just one of thoes guys who can leave things alone... I added chips, air filters, and straight piped my trucks too... was worth it.

My intrest in adding a turbo is to gain just a tad more torq when brush hogging. 5' B/H in thick grass bogs down at times.