Carter BBD swap to Mortorcraft 2100

It's seems I’m trying to climb a wall when I go to the local auto parts store and tell them I'm wanting to swap out my Carter BBD for a new Mortorcraft 2100 (1.08.) I told them that I heard the sources of this carb is from the "AMC 304". Ok now the problem, they can't seem to tell me if I would be getting the 1.08. (what I heard I need) so I don't want to get the wrong one. I also found I need an adapter plate, they can't tell me which one I need. Along with the above I still need an air cleaner assembly, throttle arm replacement (fabricated). I found all this info from the web, and parts of this forum, this will be my first try at a carb upgrade, so I need all the help I can get.
Dave
PS: I have the 258 I6 with the 2 barrel Carter BBD now.

 

I got lucky and found a 2100 w/108 in the small circle on the carb at a buddy's house in a bunch of old 304/360 engine parts. I took it to a rebuild shop, cost $99 bucks and it looks brand new, bought an adapter, air cleaner and it works Great! Good luck trying to find one, it's well worth it to find one. Here's a link http://www.cjoffroad.com/writeup.asp?WU_ID=16&noAdd=1 that might help, and I'm sure this bunch will chime in with some good info on this swap.

 

WOW ! Thanks for all the info........ I'll be checking wrecking yards this week for the carb. I'll take pictures as I go and post some details on a website. I have never rebuilt a carb, should I have that part done or is it pretty basic ?

thanks,
Dave

 

I rebuilt mine. I purchased a kit to do it. I would plan on a good sized bench to do the disassembly on and just keep things in order. The biggest issue I had was the float adj. It took a couple of tries. I would say it wasn't difficult you just need to keep things in order.

Brian

 

I had my 2100 rebuilt, it was a nasty looking site when I took it in. They bead blasted it, flow tested it, and was ready to bolt on when I got it home all for $99.95. (and it looks better than a new one!) I also bought a rebuild kit for $15 before I decided to have it done by some pros, I have rebuilt a ton of carbs and this one looks as simple as any. Guess I save the kit for next year.......

Jeff

 

Here are some pictures.....

http://www.windyvista.com/carter_bbd_2bbl_swap_to_the_mc21.htm

 

Jeeper,

How does it perform? I have a BBD on my son's 258 and it won't run worth a darn.

 

It performs great, better pickup, better idol, dosen't bog down on upgrades, and starts with no problem. Runs like a carb should.

http://www.windyvista.com/carter_bbd_2bbl_swap_to_the_mc21.htm