I have an 86 cj7, with a Carter BBD carb, and its been giving me all sorts of problems lately (recently swapped to a manual choke, but still doesnt work as well as it used to).
It seems that every time someone else posts that they have a BBD carb, someone tells them to ditch it and buy a motorcraft, which is what I am considering.
So, my questions are:
1. Should I do it?
2. What model should I buy? (is there one that bolts directly on w/out a new intake manifold?)
3. Where can I buy one?
I like simple, but at the same time I dont want to spend much $$ and I dont want to have to change anything else if possible (mainly the intake). I dont mind sticking with a manual choke.
Thanks for the help.
1.definetly its a POS
2 & 3. Theres a guy on ebay that sells a MC 2100 kit that has all you need to bolt it right onto the stock manifold, i ran it on my 258 and it worked great
I made the switch about 2 months ago and havn't looked back.
A simple adapter kit that you can buy at a parts store is all you will need to bolt it right up to your intake. The kit should set you back about $15.00.
I've heard alot of good stuff about the ebay guy but i found mine locally and didn't pay but $65 for the carb rebuilt. Of course if I could find that deal again i'd buy everyone I could get my hands on.
I picked up my 2100 at at the salvage yard for $ 20. A rebuild kit from Napa for a few bucks and an adapter from Summit for $12-ish. I also purchased a roll of gasket material from the parts store to make my own carb/manifold gaskets. The carb/manifold gasket that comes with the rebuild kit is made for a chevy engine and will probably work for this application. I made some new ones that fit exactly and helped eliminate those pesky vacuum leaks.
This is a simple rebuild and retro-fit of the BBD.
My 86 fires up almost immediately with this new carb.
I bought one from an ebay seller with the id# ehrmannmp
He has a bolt on kit with idiotproof instructions. I probably paid too much, but i was in a hurry (in the middle of moving) and it was worth it to get it done. His instructions are excellent and very detailed. He gives a CD that goes step by step. I brought the laptop out in the garage and it took less than 2 hours. Its not the cheapest route by far, but it was pretty painless.
I immediately noticed a huge difference. Then I had to go to HEI, and that 258 woke right up.
Here is his email and info:
Ehrmann Michael P SSgt USMC USNORTHCOM J37 [Michael.Ehrmann@northcom.mil]
So, my questions are:
1. Should I do it?
2. What model should I buy? (is there one that bolts directly on w/out a new intake manifold?)
3. Where can I buy one?
1. Probably. I've found the MC2100 to be easier to deal with than the Carter, but I hated that stepper feedback POS from day one, so....
2. You need a MC21xx with the 1.08 venturi stamp. Any bigger and you're gambling with performance. You do not have to replace your manifold unless you're currently running a single barrel carter, which with an 86 CJ, I don't see why you would be. All you need to adapt the MC21xx carb to the AMC 2 barrel intake is the adapter plate that everyone is talking about and that's mentioned in d@mn near every writeup you can find on the net. Bear in mind you may have to rejet the carb in addition to rebuilding it, depening on what it was originally intended for.
3. The Ebay guy is nice and seems knowledgeable (he's usually on over at UJS forums), but he's making a killing and also making it hard for anybody else who wants to ebay a used carb, as his pockets are evidently deeper than most with this little carb business he's got going. There are alot of people willing to pay his price evidently, but you can do this yourself for a fraction of his cost if you are at all mechanically inclined. It's really not as complicated as you might think, but then, you can't be a complete idiot and hope that your engine will purr like a kitten when all is said and done. Salvage yards are the best place to grab one of these suckers as they came on a variety of years/makes/models over the course of the past 40 years or so. Like ppl are saying, the rebuild kits are readily available, and this carb is a pretty easy rebuild. Again, the venturi stamp is most important when you're shopping.
The Ebay guy is nice and seems knowledgeable (he's usually on over at UJS forums), but he's making a killing and also making it hard for anybody else who wants to ebay a used carb, as his pockets are evidently deeper than most with this little carb business he's got going.
You got that right. Bought my 2100 from a dude on JU for $40, $12 rebuild kit, adaptor, manual choke (optional) and generic 9" chrome air cleaner for a fraction of what he is asking on the eBay auctions. Not to say one way is better than another, but if you're on a budget - be patient, you can do this yourself! Good luck. :thumbsup:
I put mine on for around a 100 bucks most of that was for the K&N air cleaner. Mine has been on for aout 5 years now and works great.
Do like was said above and make your own gaskets and find a 2100 that matches the addaptor. Some of the carbs across the back are straight and some are rounded. I made a plate for mine to mate the two.
thanks for the advice
so, let me mak esure that i have this right:
i could jus tbuy any old Motorcraft 2100 carb such as this one: http://cgi.ebay.com/ebaymotors/Ford...33550QQitemZ8060745396QQrdZ1QQsspagenameZWDVW
and all i would need is an adaptor plate that would go between it and the intake manifold to make it fit
(i already have a manual choke)
queston 4: how thick is this plate? - i dont have much clearance between my air cleaner and my hood?
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