NH "T"urbo "C"harged 24DA

[JSUnlimited]

Mike,

Check your PM.

Joe

 

[dfkrug]

Hey, Mega, don't give up yet.

You can plumb your oil return to your oil pan without removing the
pan. Remove the drain plug and drill through it. Weld a steel tube
that passes through it or braze a brass tube through it. Obviously
you need to protect this line as it may get damaged down there.

I still think 7psi or so boost is safe. I notice that my JD 3TN84RJ engine
delivers 33hp, and the Yanmar CBL40 uses the Yanmar 3TNV84T engine
for 37.2 hp. Both are 3 cyl 84mm bore Yanmar engines. The CBL40
is turboed for a 13% increase in hp. I do not know the boost or
what other differences these engines have. Mine is direct-injected and
only 18+ comp ratio. A CR of 22 is more likely for an indirect injected
diesel.

 

[Jagmandave]

I was gonna jump in here and say that a fellow with a Yanmar did the very thing you're doing and it worked out well. The only issue he had was in using too small an oil drain line, once he opened it up it worked great. The size you have setup looks fine, BTW. You can drill the oil pan in place, just use a magnet to pick up the big pieces and flush the pan out for the rest, it's done all the time.........another way is to pack the drill bit with grease, it will hold onto most of the shavings this way........oh, and let the oil back in the pan just above your full oil level........

 

[Bob_Skurka]

Is there some way to calculate the added horsepower and torque that will be gained by this modification? I guess I'm wondering if you are going to pick up 10% gain (2.4 hp) or if it is possible to pick up a substantial gain (20+%) so that you end up with a roughly 30 hp tractor in a very compact frame?

 

[dfkrug]

Is there some way to calculate the added horsepower and torque that will be gained by this modification? I guess I'm wondering if you are going to pick up 10% gain (2.4 hp) or if it is possible to pick up a substantial gain (20+%) so that you end up with a roughly 30 hp tractor in a very compact frame?

There are soooo many variables and most of us don't go to the expense
of measuring the resultant hp on a dyno. The best I would hope for is
that someone did a turbo setup for a particular engine, documented the
conditions (comp ratio, boost, etc) and dynoed it. Then you would at least
have benchmark to shoot for with a similar setup. I have never done it for
a diesel, but I may do it someday.

For years I had an after-market twin turbo Ferrari 308, which the turbo
company said gave a 40% hp boost with 7psi to about 350hp. This
was a reasonably well-designed system, but it still required oil cooling
and it did cause top ring breakage on all 8 cylinders. I ended up
modifying a new set of pistons to mitigate that problem. What a
black hole for money....I would rather work on tractors!

 

[bullridin_fool]

how much you'll gain depends on how much you do to it. just adding a turbo won't really add much hp, unless the tractor allready smokes alot. it will most likely make it more effeciant as it will burn all the fuel. if ya tweek the pump a bit to get more fuel you'll start making some hp. you can add all the air ya want but without more fuel to burn ya can't make more power.

when i find the tractor i want it will get a turbo, the pump turned up and probably get some injector work done. along with whatever else needs to be beefed up to hold it. i like to play and i'm a power junky.

 

[JSUnlimited]

Even though the fabrication would have been no problem (manifold, exhaust, etc.) I wanted to make sure that very little of the original parts were modified as stated before. I thought of drilling the pan (while on the tractor)and welding on a fitting, but there were too many things that could have gone wrong with that.

It really would have neat to have this turbo set-up, however there was also an trade off for being neat vs. reliability. Plus as Bob_Skurka talked about measuring the gains, I had no definitive way of knowing besides how it "felt". As the project progressed, so did the potential for $$$. Not so much for the project itself, but for when things did not work such as blown engine, shorter life expectancy.....all things I thought of to begin with.

So, I have sold the turbo to another member here and have decided to maybe look into other ways of tweaking a little more h.p. reliably (injectors, pump timing, etc.)

I apologize for jumping the gun on this post, maybe I should have waited to post when I knew everything was going to fall into place. As always, all of the ideas and comments are appreciated.

Now, to lick my wounds and move on to some other "project."

P.S. - Boating season is almost here and that "hole in the water" needs some money. I guess that's where the money is going now!

 

[JSUnlimited]

Hey, Mega, don't give up yet.

You can plumb your oil return to your oil pan without removing the
pan. Remove the drain plug and drill through it. Weld a steel tube
that passes through it or braze a brass tube through it. Obviously
you need to protect this line as it may get damaged down there.

Strike that last post of mine. I've been thinking about the above quote and I'm certain that that's going to be the answer. However in my quick decision to abandon this project, I have to start at square one since I sold the turbo. I'm not 100% certain that the one I had was appropriately sized anyway. So, I have few leads on some other turbo possibilites (very expensive) and depending on what I find out, the project may continue again!

This project has been on my mind every day since the original post!

BTW, thanks mikeyd for the advice today.

Joe

 

[firewalker]

Hey Mega....I see you are back in for some O.T. You'll have more than enough to get your boat ready, all you have to say is "Sure, where'my at???"

 

[JSUnlimited]

Oh yeah! In the "seat" on Medic 1! Woopie!