up grading my '80

[donm]

I'm thinking of upgrading from my stock 28/32 ADHA. I've already got my single plane manifold ready to install but I need some advice on what carb to get. I've looked at used stuff but that seems to be such an unkonwn quantity so I'm thinking about biting the bullet and ordering a new DFEV that's available from Weber Direct for $200.

Anyone have any experience with this carb? It should improve performance a fair amount, no? When I called Weber to ask advice on other parts I may need like spacers, linkage bits, etc., the guy had no clue, so I'm hoping someone here can share their advice and/or experience. Thanks for any and all help!

[manoa matt]

Reading through this thread should answer all of your questions and save you some headache http://www.fiatspider.com/f08/viewtopic ... 17&t=17405

[donm]

Thanks, Matt. That's good info and I had read that earlier. I guess I got confused with the reference to the "stock manifold" because I'll be using the single plane that I bought, but after looking at the photos and comparing them to my new manifold it does look like mine.

What is the purpose of the 12mm spacer? Is it because this carb is lower and the linkage won't clear? And with the added height I'll need new studs, too? This carb does have a vacuum port for my dizzy, right? I"m asking these questions because I'm hoping to have everything I need when I do the swap. Yeah, not likely, but I want to try.

[Kent124]

The spacer helps prevent the fuel in the carb from boiling - the carb is moved away from the manifold. I run a 1" spacer on my 80 with a single plane and DFEV.

Yes you run a vacuum line from the distributor advance mechanism and hook it directly to the carb.

Something else you will want is the dip stick assembly (sleeve, bracket, and dipstick) off a FI (fuel injected) 124. The stock dipstick has nothing to connect to since the old manifold isn't used.

[124JOE]

hi donm


32/36 ---------32/32---------------28/32

i like it,it has ok power
i used my old linkage with a new spacer

[donm]

I recognized the dipstick thing was something else I'd have to deal with. What about my stock air cleaner set up? Will that fit on the new carb? Or will need one of those rectangular chrome ones? My stock air cleaner is ducted to to the grill and fed cool outside air, unlike the chrome ones. I'm wondering if that really matters. Thoughts? And, Joe, it looks like I won't need any extra linkage bits? Just maybe some tweaking?

[opus10583]

I'm thinking of upgrading from my stock 28/32 ADHA. I've already got my single plane manifold ready to install but I need some advice on what carb to get. I've looked at used stuff but that seems to be such an unkonwn quantity so I'm thinking about biting the bullet and ordering a new DFEV that's available from Weber Direct for $200.

Anyone have any experience with this carb? It should improve performance a fair amount, no? When I called Weber to ask advice on other parts I may need like spacers, linkage bits, etc., the guy had no clue, so I'm hoping someone here can share their advice and/or experience. Thanks for any and all help!

Hi Don,

Do it!

I have very recent experience and can save you time and money re carb, spacer, linkage, etc. ...I bought parts I did not need, did not have parts on hand I did need.

Send me a pic of your current linkage please.

Performance of my tired 1800 was greatly improved, I replaced the exhaust system earlier, what's your exh. manifold?

Ciao,
Mark

[donm]

While I'm waiting for my carb to arrive I've been reading various posts and I'm getting confused. I thought swapping my original intake for my new 1800 intake was going to be simple but I've read posts about having to block off the EGR passage that goes through the head. Won't the new intake cover that passage? Also, should I, or should I not, use some kind of sealant on the gasket? TIA.

[Kent124]

I thought swapping my original intake for my new 1800 intake was going to be simple but I've read posts about having to block off the EGR passage that goes through the head. Won't the new intake cover that passage?

No, the new intake does not cover that passage which would result in a big exhaust leak. What I did was installed a FI exhaust manifold and downpipe which just leaves an unused EGR passage. You could also block on the intake side if you use your stock exhaust manifold.

Also, should I, or should I not, use some kind of sealant on the gasket?

I used a light coating of Permatex Hylomar Universal Blue on both sides of the intake gasket when I installed mine.

[donm]

Thanks, Kent, but how would I attachd a blocking plate? What would I attach it to?

[parsok]

I had the same issue on my '80. I used a frost plug with JB Weld on both sides to block the ports. On the exhaust side I also added a piece of metal, cut to shape, and cold welded it on just to make sure the plug did not bow out. Works fine.

[Kent124]

Thanks, Kent, but how would I attachd a blocking plate? What would I attach it to?

I used an exhaust manifold and downpipe from a FI as my solution.

[donm]

A better exhaust manifold will be my next project. Good tip about the frost plug but I don't weld. What I was able to do was loosen that 2 bolt flange that connects to the head beside the exhaust manifold and fitted in a blocking plate which I cut from some thin guage sheet metal. I coated it first with that copper colored hi-temp silicone and then tighted down the bolts. That should work fine.

This weekend I plan to remove the old intake manifold and I'm hoping those bolts don't give me any trouble.

[donm]

Wow, I can't believe it. I just finished installing my new intake and carb, hooked up the lines and replaced the coolant. I turned the key and it fired right up and settled into a nice idle. The biggest problem I had was trying to bend the tab on the timing belt shield out of my way because it was blocking removal of the old intake. Would never have attemped this job without the good advice on this board. And thanks, Opus, for your tip about the new ball socket needed to fit the new carb--if I didn't have that the project would have come to a standstill while I orderd one.

Now, how to hook up the cannister. I know I don't really need it, but I'd like to hook it up properly if I can. I read here to leave the bottom hose that goes the the tank intact and block off the other big hose on the bottom, but what about that little vacuum line on the top? There's only one vacuum port on the carb and that's hooked up to my vacuum advance. Is it OK to tee into that line? Will that affect my timing?

[124JOE]

i just layed the top hose infront of the radiator so its out of sight
and i have a hose out the side i pluged