Carburetor Advice

[maser88]

So with my current cam cover, I can drill in two studs where the current holes are now, and mount a bracket? I don't know what else those two holes on the cam cover would be used for.

[vandor]

So with my current cam cover, I can drill in two studs where the current holes are now, and mount a bracket? I don't know what else those two holes on the cam cover would be used for.

You need to drill and tap them. Likely you will have to drill through the cover, so you will need to put thread locker on the studs to keep the oil from seeping out.

[manoa matt]

The cam cover holes are already threaded, they are probably just filled with gunk. I have a 76 1.8L head on my bench right now and it has those covers with the threaded holes, Fiat may have anticipated the change to the later linkage system and incorporated the threaded holes in the previous castings. All you need is two studs to screw in there. I can send you the studs if you like.

However, your problem may be simpler than you think. Think about it this way. Fiat used the same 32ADFA carb with two different linkage systems. They both pull, but from different sides of the carb. However the throttle shaft rotates the same way with both systems. On earlier cars that used a cable and the bell, the linkage pulls from under side of the throttle shaft. On the later version with the cam box mounted linkage, the linkage pulls from above the throttle shaft.

Post pictures of your current linkage system, and a view of the carb linkage. It may be as simple as flipping the linkage ball from the topside to the bottom side, or vice versa.

[131]

I've seen quite a few tappet covers that have the casting, but the threading for the stud was not done.

[maser88]

Here is my Carb linkage with the cable mount. As you can see there is a custom bracket mounted to the intake manifold and the throttle cable comes down and over the carb linkage. The Linkage is pulled counter clockwise to open the throttle.

Looking at the holes on the cam cover, it seems likely they are not pre-thread but I can take care of that.

[So Cal Mark]

that is not a custom bracket, it was stock on 75-76 motors.

[GDR76SPIDER]

Have you had any luck? I'm having the same issue. I have a 1976 124 Spider i've been working on slowly. I recently just purchased the EMPI 32/36 DFEV Carb from Allison's, Which was a speedy delivery, even up here to Toronto Canada, Thanks Mark.

I've been searching the forums all day and can't seem to find the answer.

my stock carb is what i would believe to be a 32 adfa? pics below.



as you can see the throttle cable connects directly to the Carb @ the drum (i believe its called)

When i ordered the 32/36 DFEV, Mark included the Rod needed to connect to the linkage or "brackets" which is on the Cam box.

My Spider didn't come with this Linkage on the Cam Box(being pre 77). I've been searching all over the net to see if i can find this part, i'm guessing getting this part will be my easiest option?
#23-24 below and i guess all the other springs n such which go with it.


any options you guys can think of would be greatly appreciated, here are some pics of the throttle cable setup if it helps?

thanks in advance, this forum has helped a lot in previous info i needed to look up in the search.

[So Cal Mark]

I wish you had let me know you were putting it on a 76. The easiest install involves putting a cable guide on the throttle lever of the new carb. That way you use the existing cable and bracket

[GDR76SPIDER]

thanks for the speedy reply. i'm glad to hear that solution does seem pretty simple, and i'm kicking myself for not specifying it was a 76 considering i was doing some searching on here and didn't find much regarding the 76.
How would i go about getting this cable guide? would you have it in stock? and would it be as simple as just screwing it onto the lever?

thanks again.

[So Cal Mark]

we go to the local pick-a-part and get cable guides from FI cars. All brands of FI cars use them and some will easily attach to the throttle lever plate. You just have to make sure it's the right orientation for the direction of pull

[GDR76SPIDER]

sounds good, i'll make a trip out to the local scrap yard and have a peek.
thanks!

[GDR76SPIDER]

Hey guys, just thought i would share what i came up with, thanks to the info i got from Mark Allison (mod) and (Manoa Matt).
If i am correct, i think i would need a spacer because i'm using the drum cable guide from the old carb, (spacer so that it doesnt rub *Matt informed me of this*.

ALSO APOLOGIES FOR POOR QUALITY PHOTOS, TAKEN WITH MY PHONE.

ok so i figured i would try this and if it didn't work i could goto the local scrap yard and dig around for cable guides that may work.

what i did was remove the cable guide from the old carb, and line it up to find out where i would need to drill the hole. Once i did that, i had to shave down and cut a tiny piece off the old plastic guide, so that the rod wouldn't rub and would be able to move freely.


It took some time, putting it together and taking it apart again till i got it right. Then i went to Canadian tire and picked up some Push Nuts, so that once the end of the rod was pushed through, it wouldn't slip back out.



Once that was done, i put it back together and it seems to move properly, i haven't tried to install it on the manifold due to the fact i will probably be in need of a Spacer.




Mark or anyone who would be knowledgable in the topic, please let me know if there is any risk or something you guys see that could be a possible issue.

hopefully not, and thanks again for the tips and ideas.

[So Cal Mark]

we've used that cable drum on some carbs, but felt it was a little complicated for some installers.