Stock 79 Spider 2000 carb rebuild time

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bradartigue
Posts: 2183
Joined: Thu Sep 20, 2007 2:35 pm
Your car is a: 1970 Sport Spider
Location: Atlanta, GA

Re: Stock 79 Spider 2000 carb rebuild time

Post by bradartigue »

Hvnfn wrote:OK, several of you have mentioned also replacing the restrictive exhaust manifold... What year Spiders had the 4-2-1 configuration? Did all of the 1800's use the 4-2-1 or did some use the 4-1? My books only show the 4-1 configuration.

Thanks!
1800cc 1974 and 1975 except california
2000cc 1980-1985 fuel injected - but may be too tall for the 1800 motor
Hvnfn

Re: Stock 79 Spider 2000 carb rebuild time.. DONE!

Post by Hvnfn »

Tonight was a GREAT night for the FIAT and I!

New old 1800 intake, new 32\36 DFEV carb... all together and runnin like a beast! Man, what a world of difference that intake and carb made to that car... She is peppy again! Now, time to go get those headers!!! If the gain is anything like this, I am in for a wild little car!! woohoo!!

Thank you MBOUSE and all of you that helped me to piece this bad boy together... I am a happy camper!
rlux4
Patron 2022
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Posts: 4211
Joined: Thu Jan 10, 2008 8:32 pm
Your car is a: 1982 2000 Spider
Location: Granite Falls, Wa

Re: Stock 79 Spider 2000 carb rebuild time

Post by rlux4 »

Good for you Hvnfn, good job getting around the drawbacks of a '79. Enjoy.
Ron
Ron Luxmore
rlux2n2@gmail.com
'82 2000 Spider: after 26 years between Spiders.
So Cal Mark

Re: Stock 79 Spider 2000 carb rebuild time

Post by So Cal Mark »

congratulations! always good to hear a success story
driftandrally616

Re: Stock 79 Spider 2000 carb rebuild time

Post by driftandrally616 »

Sorry to resurrect this thread, but it applies to me directly. So I am in the process of doing the exact same swap, 32/36 DFEV and 1800 Manifold in a '79, although I already have the headers. I have many questions, first being, how in god's name do you people get the nuts off the bottom of the intake manifold?! Second, where do I buy an inch spacer for the carb? Third, how come there's only 2 inlets on the 32/36, and they're not even close together, is there no fuel return line? Fourth, do you need the gas vapor container, or any of the smog junk? Fifth, just kidding, but I'll probably think of more questions tomorrow, can't wait until this is done!

Thanks,
- Derek
Hvnfn

Re: Stock 79 Spider 2000 carb rebuild time

Post by Hvnfn »

I hear ya.

1. The nuts are a serious pain in the a$$, but with persistence and a flex ratchet, you can get to the nuts on the intake. The ones nearest the firewall are the worst in my opinion.
2. I didnt go with an inch spacer on my DFEV, I went with 1/4 inch and it appears to run great but I can see how having the other 3/4 inch could improve perf... I had to use shorter lugs to mount my carb, but it did work well. Otherwise, you may have to contact Weber or a machine shop to fabricate one for you... Others on this forum could probably answer this question far better than I.
3. There is no fuel return line.. cap the fuel return line coming into the engine compartment.
4. I removed all of the smog crap (keep it around though, or donate to someone on here looking for it) and I plugged off the vaper canister.
5. Finding all the right plugs to fit the 1800 intake can be a fun task.
6. blocking off of the exhaust port on the block on the exhaust manifold side is also something else to consider since it will be open... after you install your headers... unless the base extends far enough to block the port.
7. Dipstick tube wil be left dangling when you install 1800 manifold as the perch was on the old manifold.. so, you will have to create a perch for it....
Consider installing an oil pressure guage while you are under there and clean up the trap under the intake manifold since you are there...

MBOUSE was a hero to me when I did mine... his information was absolutely spot on and priceless... he knew all of the little nuances of the gig...

I will also gladly answer any questions that I can, but I am a neophite compared to others on here! :)
driftandrally616

Re: Stock 79 Spider 2000 carb rebuild time

Post by driftandrally616 »

That helps a lot, thanks. What did you use to cap off the fuel return line and the vapor canister? And where does the dist. vacuum line go to, the only other inlet on the carb? There are two inlets, one on the left, which is large and I think is the fuel inlet, the other is towards the middle, and it would make sense if it was the dist. vacuum port. One more random question, I'm redoing my cooling system, minus radiator, and has anyone on here done their water pump themselves, because it is quite hard to get the pulley bolts off while it is spinning.

Noob, over and out.
Hvnfn

Re: Stock 79 Spider 2000 carb rebuild time

Post by Hvnfn »

For capping the lines, I just went down to the local auto parts store and got rubber vacuum caps... 1/8 and 5/16 caps.

For the canister, I blocked the top and the one on the bottom that led to all of the smog junk... I left the one that leads to the metal line intact thinking it didnt really hurt anything to leave it.

And you are right about the lower port on the carb... that is for the vac advance. The 5/16 on the top is the fuel inlet.

Havent messed with the water pump so I dont know.. :) sorry.
driftandrally616

Re: Stock 79 Spider 2000 carb rebuild time

Post by driftandrally616 »

Thanks a ton, now I just have to get around to taking the stupid nuts off the manifold and finding a way to take off the water pump. :x :x :x :x
driftandrally616

Re: Stock 79 Spider 2000 carb rebuild time

Post by driftandrally616 »

Hey if you don't mind me asking another question on this topic, how did you make your perch for the oil dipstick? Could you maybe post a picture so I can get some ideas? Thanks, almost finished, I hope.
Hvnfn

Re: Stock 79 Spider 2000 carb rebuild time

Post by Hvnfn »

Embarrasing, but I admit it... mine is still hangin'. :(
So Cal Mark

Re: Stock 79 Spider 2000 carb rebuild time

Post by So Cal Mark »

by leaving the cannister attached to the fuel tank, you are storing vapors without any way of purging them. You should have the vacuum line hooked to the cannister to pull the vapors into the intake for burning with the fuel mixture. No adverse affect on anything at all. The hose that attaches from the cannister to the float bowl allows vapor from the carb to be stored in the cannister also. This system doesn't hurt performance at all.
Hvnfn

Re: Stock 79 Spider 2000 carb rebuild time

Post by Hvnfn »

Hey mark, I can see your point on the canister... with the 1800 manifold I am not exactly positive which inlet i would hook the canister to... I was thinking perhaps the other end of the T that goes to the brake booster?
driftandrally616

Re: Stock 79 Spider 2000 carb rebuild time

Post by driftandrally616 »

haha I was thinking about a bracket that connects to the alternator bracket/tensioner. But I have to wait until after I have everything back in to get the right position of the alternator. And Mark, thanks for the suggestion, but I am also lost as to where I can connect the hose to, since there are only 2 ports on the DFEV. Thanks
Hvnfn

Re: Stock 79 Spider 2000 carb rebuild time

Post by Hvnfn »

That is exactly where I was/am going to make mine... thinking of using thick sheet metal since I can't weld.
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