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Turbo Diesel

Posted: Mon Sep 06, 2010 12:31 pm
by Farmallgray
Here is a pic of my newly built Turbo Diesel. Some of you may remember me working on it on the old site.
It is an 1806 with a D-1105 28 hp Kubota engine. The rear axle is from an Original with axles and housings from a
Cyclops model.

Re: Turbo Diesel

Posted: Mon Sep 06, 2010 4:20 pm
by red82s
Did you ever get the rear fixed yet? I watched the videos. That thing is pretty sweet!

Re: Turbo Diesel

Posted: Mon Sep 06, 2010 8:19 pm
by Farmallgray
Just got another carrier today. I may get a set of aftermarket gears to put in.

Re: Turbo Diesel

Posted: Tue Sep 07, 2010 5:17 pm
by bud horn
Glad to see you got it together. Have you had it to a pull yet?

Re: Turbo Diesel

Posted: Tue Sep 07, 2010 5:46 pm
by Farmallgray
Bud,
Check out this thread on the Red Power forum;
http://www.redpowermagazine.com/forums/ ... opic=59772
There are links to videos of my first pull on there.

Re: Turbo Diesel

Posted: Wed Sep 08, 2010 8:28 pm
by Racenitro
Looks super....

Is the pump turned up enough...does not seem to blow black enough..... or is the turbo putting ot too much boost?

I would thing that the amount of torque you are putting out that you would definitely need at least CI housing and aftermarket innards...

Re: Turbo Diesel

Posted: Fri Sep 10, 2010 9:36 pm
by Farmallgray
Frank,
The stock pump is turned up as much as it can be. The next step for that will be a different pump or having this one reworked.

First I need to make the rearend hold up.

It does have an aftermarket top shaft and much heavier bearings and bearing holders on both shafts. It is a cast iron housing with aluminum axle tubes.

I got a 23/24 tooth 2nd and 3rd gear set to put in. I hope to have it back together for a pull next weekend.

I don't think there is such a thing as too much boost :)

It probably has too much boost for the amount of fuel its getting though.

Re: Turbo Diesel

Posted: Sat Sep 11, 2010 6:56 am
by Racenitro
Todd...
I agree with your last sentence....
Thee is never too much boost as long as the fuel is there.....

One of the things that can happen is too much boost puts it on the fine edge of too lean and then it gets super hot and hurts innards....

I have seen engine blocks cut between cylinders as if a cutting torch was used due to being too lean.

Do you have an after cooler also?

Can you use water/alcohol injection?

Re: Turbo Diesel

Posted: Sat Sep 11, 2010 9:15 pm
by Farmallgray
Frank,
I am using water injection but no intercooler or aftercooler. I have added another nozzle to put more water in for the next pull.

From what I have been learning, diesels don't get hot from being lean like a spark ignition engine does. Since they are throttled by fuel rather than air,
they just don't reach their full potential when lean. More fuel in a diesel makes more heat up to a point, but then way overfueling can cool them back down.

Some forms of diesel pulling use that strategy rather than water injection to keep EGTs in check.

Re: Turbo Diesel

Posted: Sat Sep 11, 2010 9:28 pm
by Racenitro
You are correct on too much fuel cools them down...

I always ran my semi's by the pyrometer.....

Lean is not nearly as big a problem in diesels for some of the reasons you stated......except with all of the add ons it can cause a lean situation...for short periods of time ....but then the turbo will fall off and that ends the lean situation....

Gotta find that sweet spot....where the fuel and air are mixed just right....and then they blow black with a nice arrowhead shaped orange flame just over the top of the exhaust pipe...

Did you do anyting to the nozzles?

Re: Turbo Diesel

Posted: Sat Sep 11, 2010 11:39 pm
by John T
The big guys do both. They go through multiple gallons of diesel for a pull and have water injection to keep things from blowing up too often...

Re: Turbo Diesel

Posted: Sun Sep 12, 2010 8:37 pm
by Farmallgray
Right now the pump and injectors are totally stock. I lightened the governor weights and removed the stop so it can stretch the spring as hard as possible.

The stock pump can be reworked, but I'm looking into putting a Bosch A series pump on it. An A pump would give me all the fuel I would ever need.
But I'm not sure how I can adapt it to the engine. Supposedly, it has been done but I haven't found out much about how.

Re: Turbo Diesel

Posted: Mon Sep 13, 2010 7:42 am
by Racenitro
I You mean like this

Re: Turbo Diesel

Posted: Mon Sep 13, 2010 10:43 am
by BigMike
Frank,I think that's what they call an EXTERNAL combustion engine. :shock:

Todd,your making good progress!
I wish I had half the brains it takes to build it.

Re: Turbo Diesel

Posted: Tue Sep 14, 2010 1:33 pm
by jcarlton
When did Binder Bob blow Hyper Active up? Guess I missed that...lol Hey Frank how have you been?

Re: Turbo Diesel

Posted: Wed Sep 15, 2010 4:35 pm
by Farmallgray
I was putting the transmission back together and found another problem. The top shaft is twisted and won't let the 2-3 gear slide all the way forward.

I put in a call to Lakota Racing and I should have a better one tomorow. This was supposed to be a hardened shaft but apparently it wasn't hardened enough.

Re: Turbo Diesel

Posted: Wed Sep 15, 2010 4:45 pm
by Farmallgray
Here are a few more pics of the tractor.

Re: Turbo Diesel

Posted: Wed Sep 15, 2010 8:49 pm
by Racenitro
JC...That was a few years back at Highland, Il. It made a BIG BANG!!!!!

Todd...
you are making way too much power..LOL...

Was that an after market shaft?


All of that torque tends to play havoc with the transaxle. You will chase one part after another until you have a completely aftermarket rear.

What about the Dart Rear?

Re: Turbo Diesel

Posted: Thu Sep 16, 2010 9:21 am
by Farmallgray
It was supposed to be an older used aftermarket shaft. I took a file to it and it didn't seem any harder than a stock one.
Maybe it wasn't heat treated right, or maybe someone made a mistake, who knows? I have a new one form Lakota now to put in now.

I think I may not have had the ring & pinion setup right before.
I also now have three backer studs that run against the ring gear for more support.

If it breaks again I may go to a dart/valiant setup. I may even go to outboard planetaries.

Running in that 16 tooth second gear is probably what caused a lot of the problem. It was putting way too much torque through the rearend and not loading the engine at all. I'm hoping the new gears will solve that problem.

Re: Turbo Diesel

Posted: Sun Sep 19, 2010 10:45 am
by Farmallgray
I got the transmission back together and made it to a pull last night.
Put a 23/24 tooth gear set in and added a third water nozzle with them all going in the intake ports.

1st hook;

http://www.youtube.com/user/farmallgray ... 8_WNasShfU
Ran pretty good but the sled was set fairly light. I used the 23 tooth for both hooks. You can clearly see a flame from the stack. The extra water helped but it may need more. EGTs were just over 1600. 22# boost. Next step is more timing I think.

2nd hook;

http://www.youtube.com/user/farmallgray ... eqzaf-aI0I

The sled was set for the Pro Stock gassers. I should have built more boost at the line and it may have held on longer. Track was really biting. Only got 16# boost. EGTS were around 1500.

I feel I'm making pretty good progress and any time you can drive it on the trailer it's a good night.

Re: Turbo Diesel

Posted: Mon Sep 20, 2010 12:32 pm
by Racenitro
You may want to explore a true slipper clutch so you can keep the r's and boost up at the beginning of the pull...
I built one for a D21 Allis 30 years ago and it lasted for 20 years. The Tractor was nearly unbeatable because he could keep the R's up and the Boost up off the line.

You would need at least 2 disc, means of changing static load and dynamic load.
And be able to foot control the amount of slippage .

Re: Turbo Diesel

Posted: Mon Sep 20, 2010 3:00 pm
by Farmallgray
Some guys are running an 8" Crower or knockoff but I have been told they are about $1200.
That last hook I pretty much rolled it out at an idle then mashed the throttle. I never really built any boost at the line. I didn't expect the sled to pull that hard. I didn't know at the time he had the sled set so light on my first hook.
The front end came up so hard on the first hook I was trying to avoid that. Next time I'll build some boost and try slipping the clutch more coming off the line.

Re: Turbo Diesel

Posted: Sat Oct 09, 2010 12:00 pm
by Farmallgray

Re: Turbo Diesel

Posted: Sun Oct 17, 2010 7:44 am
by Farmallgray
Had another pull yesterday which was probably the last one of the year. Tractor seems to be working better since I corrected a problem with the waste gate.
Track was pretty loose. Engine ran good and made 36 pounds of boost which is a lot more than it ever made bfore. EGT was still a bit over 1700. I'm thinking maybe now that it has more boost that I will be able to give it more water.
This was the first run;
http://www.youtube.com/user/farmallgray ... e=mhum#p/u

That was with the 23 tooth second gear. I made a second run with the 24 tooth and it worked just as good. I hope to post that video later.

Re: Turbo Diesel

Posted: Sun Oct 17, 2010 1:05 pm
by J Hayes
Farmallgray wrote:Here are the videos from my pull last Saturday;



Last hook was probably my best so far.
According to your watch ;) , the difference between the first and last pull was approximately 3 hours.
Did they redress the track ? looks like ya had a better bite there on the last one .

Also the climate may be a factor we are into cooler weather. really sounds good!!

Re: Turbo Diesel

Posted: Sun Oct 17, 2010 6:25 pm
by Farmallgray
Jim,
I'm not sure what you mean about the watch. :?:

The track was a bit dry to start and got progressivley drier. There wasn't a lot of bite left at the end.

It ran a lot better yesterday than it did on two weeks ago. The weight box was all the way up to the top yesterday (same sled).

I'm pretty happy with how it worked yesterday. I'd like to see how it will work on a track with some bite now.

Re: Turbo Diesel

Posted: Sun Oct 17, 2010 7:14 pm
by J Hayes
[quote="Farmallgray"]Jim,
I'm not sure what you mean about the watch. :?:


LOL I was only using the sun to try to figure approximate timing, and that does make a difference on track conditions, last run that day you couldn't have wanted it any better for that hook.

That's why I ask if any more moisture/ (dressed) was added in between ?

Re: Turbo Diesel

Posted: Sun Oct 17, 2010 8:18 pm
by BigMike
When you guys talk about Dart/Valiant rear ends do you mean the 8-3/4" Chrysler rear end?

Re: Turbo Diesel

Posted: Mon Oct 18, 2010 10:10 am
by Farmallgray
Mike,
It is the 7-1/4" Chrysler rear they are talking about.
Here is a site with more info;
http://www.gardentractorpullingtips.com/transaxl.htm

Jim,
No they didn't add any moisture, that is why the dust was flying so bad on the last run.

Re: Turbo Diesel

Posted: Sun Oct 24, 2010 9:05 pm
by Farmallgray
Added an air cleaner and an air shut-off to the tractor.