Hi FTE, Thanks for catching up. that is pretty much exactly what my machinist said, If I do most of the work he will just face it, to final dimension and make sure it is square. So I bought 15 new cutoff wheels this afternoon. I also already chucked up the bellcover in the mill, and started to mill out the webs from the inside of the bell cover.
But now I am having a little bit of doubts, If I have a big chunk of aluminum out there it might be a bit easier to just make a one piece adapter.
On the negative side of the one piece. The Kubota Bell cover sure does fit on the engine ( like it was made for it) I had to hit mine with a block of wood to get it off the engine it was very tight, or I should say a very nice fit. Probably much closer tolerances than I can create.
As this is my first adapter , I have a basic plan, but there are a few holes in my plan I think.
I can get the transmission centered up on the outer ring of the adapter plate. I was going to make a tight fitting sleeve to fit over the throw out bearing support, and the Pointy end could center up into the adapter plate, at say a .5" hole, and then I could drill the 6 outer trans mount holes.
I guess then I would have to make another plug that would be much thinner, and it could have a big end that fits the big center hole in the Kubota bell cover and the pointy end would also center into the same 1/2" hole in the adapter, and I could drill the 12 Kubota holes into the adapter.
So the 12 Kubota bolts have to be replaced with longer bolts to fit through the bell cover and the adapter plate?? Is that correct , It is pretty hard to type the description.
I remember that you added some dowels to fit your adapter to the Kubota Bell cover, I don't remember why?
I am running out of steam tonight. I am sure I missed something

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Hi Jester, I meant rev acceleration. how fast the revs come up. Same thing with a racing gasser and a light flywheel. it is what you said, I just said it different

 

Well with the Kubota limited RPM range I do not feel there would be an advantage in using a light Flywheel. Actually there would be more of a downside.

Now a Road Race Car or Sprints or any other activity that would rely on quick acceleration from corning and such a Light Flywheel is the Ticket.

And if Drag Racing a heavier flywheel is preferred. Heck I still remember people running 60 LB Flywheels behind Big Block Chevys. But I digress. Back to the little Smoker

 

What I did to center the two was I turned a "plug" to fit in the center of the flywheel cover with a 1/4 in center, then I was able to line that up with the 1/4 in center in the trans input shaft. I also made a sleve to stabilize the input shaft to the throughout brg collar. So with a 1/4 in hole in the 1/4 steel plate lined up with the 1/4 in hole in the plug,lined up to the input shaft,then those two pinned together and the holes indexed to the flywheel cover and bellhousing. Hope that helps.

 

I got to spend most of the afternoon and evening in the shop. I rough cut the flywheel cover down close to where it needs to be. I tried to use a big end mill to bring it down to size. I was not happy with the results. I was going to have to make 2 setups in the machine to get the full diameter cut. My mill only has a 15" travel on the short side. and the cover is over that. Plus my first cuts were not coming out nice and flat. the cover was bouncing on the table, I think I was taking too big a cuts
My biggest problem machining stuff is getting the set up correct and sturdy enough. I seem to do OK on little stuff. But when it comes to big setups I really have trouble.
In the picture I was going to use the little end mill just to mark the cover at the 1/2" thick mark and then I planned to make the main cuts with a cut off blade on a electric die grinder. Well I got about 3/4 of the way around and all of a sudden my cutter takes a jump, and I look at the set up on the chuck and the dam plate had slipped off the chuck about 1/16". So that was setup workholding prolem #1. Then I set up the cover flat on the table to try and mill it flat, I put 2 heavy flat bar clamps on to hold it too the table, I cranked this down tight tight. and it held for a few minutes and then it started to jump too. I am not sure what was causing that
I am sure it is my fault. but it seems that the bigger machines are a lot more rigid, and much better for larger jobs
Well on Monday I think I will take the cover into the machine shop and let a pro get the cover nice and flat and to the correct thickness.
Tomorrow I can start on the alignment plugs and sleeves, and cleaning up the huge mess all that cutting made. I was not wearing a respirator for the first 25 minutes of the cutting, and I am still blowing black out of my nose.
The cut off wheels worked pretty well. I went through 6 3" cutoff wheels to make the rough cuts

 

You are Whittling it down there Pard. I hope the Machine shop gives you a good price. At the very least after them looking at all the work you did they may just take pity on you and give you a great deal. And yep we all need a bit of pity now and then. .

 

thanks, I guess. I am not sure how to feel about that comment , I am sure the machine shop will get me for a one hour minimum $80.
Jester I like your Intercooler. When is your adapter supposed to arrive?

 

$80.00 would be well worth it. As for the adapter I have no idea as I have not heard anything as of yet.

 

I am having a patience problem again. I am going with the 2 piece adapter, because I have all that stuff in stock. My heavy plate was only 5/8" , and I did not think that would be thick enough.
I think it is ambitious, but I want to finish before Thanksgiving

 

Believe me I hope everything goes smooth for you. As we are Watching

 

Well we will see how the adapter alignment jigs come out tomorrow, that will be an important step.

yall have a good night