BX2200 Engine Confusion?

woodstock · Jul 25, 2001

Well I was under the hood the other day just looking aound when I notices some stickers on the engine.

Then i went around to the other side and ther was this sticker.

Now I totally confused. The first one says I have the B7500 1000 cc engine. The second one says its is the BX2200 898.
What is going on here?

Winnipeg, Manitoba

2001 BX2200 (18 hrs) All Kubota FEL,Tiller, box blade, blower w/elec shute, 60 mid mt deck, Ag tires.
Grey market B7000 w/Tiller (120 hrs)
1984 JD 316 after 687 hrs.

GlueGuy · Jul 25, 2001

Woody,

I'd look around for markings in the casting. Otherwise, maybe you've got yourself a BX7500? /w3tcompact/icons/smile.gif

The GlueGuy

TresCrows · Jul 25, 2001

This was done purposely to confuse and threaten B7500 owners who read Glueguys engine comparison chart /w3tcompact/icons/smile.gif . Perhaps the engine is a variable displacement unit! Mine says D905 which is the same engine that was in the B1700 where it makes 17 horses at 2600 and 22 at 3200 for the BX2200. J

r0GuE · Jul 25, 2001

If I had to guess, I'd say that they had not made a new "EPA feel good emmisions sticker" for the BX so they used an existing one from a different model tractor.

Rogue

GlueGuy · Jul 25, 2001

That sounds like the likely situation. Also, on the left side of the engine (as viewed sitting in the seat), the casting should have the displacement indicated (just below the EPA sticker). The casting on my B7500 looks like the attached pic.

The GlueGuy

woodstock · Jul 27, 2001

Anyone know where the BX engine block casting number is?
I looked but couln't find it.
Do I have to take off the side engine cover?

Winnipeg, Manitoba

2001 BX2200 (20 hrs) All Kubota FEL,Tiller, box blade, blower w/elec shute, 60 mid mt deck, Ag tires.
Grey market B7000 w/Tiller (120 hrs)
1984 JD 316 after 687 hrs.

GlueGuy · Jul 28, 2001

I had to take the side cover off to get the pic above on my B7500. I would assume that it would be pretty much the same for the BX. The mark on the casting is right below the EPA sticker.

The GlueGuy

Charliebrn · Jul 30, 2001

Yup, I got the same stickers you do. I looked under my exhaust manifold and found the casting mark identifying it as the D905, so my guess is that the others are correct and are just using the EPA sticker from the D1005.

woodstock · Jul 30, 2001

Ditto on the casting #'s.
You can see it through the right side cover grill, but I was not able to take a picture.
Further to the front on the same side just above the starter are additional casting numbers 0898, which just happens to be the number of cubic centirmeters of displacement.

This brings another question.

Where the heck is the alternator on a BX?

Winnipeg, Manitoba

2001 BX2200 (20 hrs) All Kubota FEL,Tiller, box blade, blower w/elec shute, 60 mid mt deck, Ag tires.
Grey market B7000 w/Tiller (120 hrs)

Charliebrn · Jul 31, 2001

The BX doesn't use an alternator, but instead use a dynamo....it's the little round thing with a small cable going to it and runs off the fan belt. Now, I would appreciate it if someone could tell me the specs on that thing and what the differences are between it and a real alternator....

Pks · Jul 31, 2001

Have you ever dealt with the flywheel on a garden tractor powered by a Briggs or Tech? That flywheel with its magnets and coils underneath is very similar to a dynamo. That's how I remember the differences. Same idea on lots of motorcycles.

GlueGuy · Jul 31, 2001

My understanding is that a dynamo and an alternator are essentially the same in terms of how they produce energy. However, an alternator has built-in rectifiers, and if < 5 or 10 years old probably also has a regulator.

A dynamo has the rectifiers external to the dynamo (probably integrated with a regulator in a separate box).

So, a dynamo will be smaller than an alternator, and will have multiple wires coming out that lead to the rectifier/regulator box.

The GlueGuy

r0GuE · Jul 31, 2001

Hey, somebody help me out here, I'm getting uneasy. I read a post a while ago that said something about the BX getting its 22HP by tricking it out with high RPM instead of true displacement like a B. Whats up with that? Is the BX truely less powerfull that it suggests?
Also Is there a way to add a Tach?

Rogue

BigE · Jul 31, 2001

In reguards to the Dynamo question, if my memory serves me, a dynamo produces DC power by passing a perminent or electro magnet by a stationary iron core coil. It differs from a generator as they use stationary magnets and a rotating iron core coil.
Hope that keeps everyone from loosing sleep.

woodstock · Jul 31, 2001

Ok, there is no alternator,
so were are the wires from this dyno-whats-it-thingama-jig.
My Goal here is to attach a electrically driven Tach.

Winnipeg, Manitoba

2001 BX2200 (20 hrs) All Kubota FEL,Tiller, box blade, blower w/elec shute, 60 mid mt deck, Ag tires.
Grey market B7000 w/Tiller (120 hrs)

woodstock · Jul 31, 2001

According to this there is an alternator. I've seen this but thought it was a tensioning device.

Winnipeg, Manitoba

2001 BX2200 (20 hrs) All Kubota FEL,Tiller, box blade, blower w/elec shute, 60 mid mt deck, Ag tires.
Grey market B7000 w/Tiller (120 hrs)

GlueGuy · Aug 1, 2001

I wouldn't call it "tricking it out", it's just a way to get more HP out than would be available otherwise. HP is a product of torque X RPM, so you naturally get more of it at higher RPM, up to a point.

There are some things that are suited better to HP, and others that are better suited to torque. Most "tractor things" require the latter, so HP is "generally" less important. That said, HP comes in handy when mowing.

The GlueGuy

GlueGuy · Aug 1, 2001

We may be splitting hairs here too. I just looked up "dynamo" and "generator" in my "The Way Things Work", and it freely interchanges the two terms along with the notion of AC and DC, and does not associate either with a particular way of producing electricity. Of course this volume was written in the UK, and we know how they mess with English. /w3tcompact/icons/wink.gif

The GlueGuy