1600 engine in 69 carb linkage

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jetboy

1600 engine in 69 carb linkage

Post by jetboy »

I have this project car: its a 69 with a later 1600 engine and carb on it. But it has the old push pull style lever in the engine bay, not the cable - so stock linkage will not work. (as far as i know)

what do people usually do? the PO put in some angle iron brackets and ran a cable around the carb in a circle. super janky and id rather not do that.

Image

thanks
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seabeelt
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Your car is a: Fiat Spider - 1971 BS1
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Re: 1600 engine in 69 carb linkage

Post by seabeelt »

Early spiders had this type of set up later spiders had a different gas pedal linkage specifically for a cable
Image[/URL]
Michael and Deborah Williamson
1971 Spider -Tropie’ - w screaming IDFs
1971 Spider - Vesper -scrapped
1979 Spider - Seraphina - our son's car now sold
1972 Spider - Tortellini- our son's current
BEEK
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Joined: Wed Mar 24, 2010 10:45 pm
Your car is a: 1975 Spider
Location: clermont fl

Re: 1600 engine in 69 carb linkage

Post by BEEK »

looking at jims spider the original linkage does fit and work, but there is a problem with that style linkage in the original design. when the throttle is depressed the linkage twists, the motor torques and causes its own twist to the linkage, thus creating very jerkey accelerations, especially when the motor mounts are worn. fiat figures this out in the later cars and made an adjustment, on 75 and later 124's except sedans, which started earlier. they went to a cable throttle. Much better design. this is also the design which i will be fitting to jims car
Automotive Service Technology Instructor (34 year Fiat mechanic)
75 spider
, 6 Lancia Scorpions, 2018 Abarth Spider, 500X wifes, 500L 3 82 Zagatos. 82 spider 34k original miles, 83 pininfarina, 8 fiat spider parts cars
son has 78 spider
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seabeelt
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Your car is a: Fiat Spider - 1971 BS1
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Re: 1600 engine in 69 carb linkage

Post by seabeelt »

I haven't had any acceleration issues, but am switching over to the cable along with twin IDFs

Can't wait to see more pics of Jim's build
Michael and Deborah Williamson
1971 Spider -Tropie’ - w screaming IDFs
1971 Spider - Vesper -scrapped
1979 Spider - Seraphina - our son's car now sold
1972 Spider - Tortellini- our son's current
jetboy

Re: 1600 engine in 69 carb linkage

Post by jetboy »

maybe that is what the PO was trying to deal with by putting a cable between the pedal arm and carb- in theory this should reduce or eliminate any effects the engine moving would have. but his design is no good as both the pick points of the cable are on the intake manifold. so when the engine shifts it would pull and push against the lever similarly to solid linkage. what one needs is a pick point from the frame- then a cable with some room to flex, to a pick point on the engine/manifold and then into the carb.

thanks for this- ill try and see what i can come up with. seems like in this case a little custom work might be the best route
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seabeelt
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Your car is a: Fiat Spider - 1971 BS1
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Re: 1600 engine in 69 carb linkage

Post by seabeelt »

Cable runs from gas pedal arm inside the footwell to a bracket on the intake cam cover ( covers flex movement via the cable) then hard linkage to the carb.
Michael and Deborah Williamson
1971 Spider -Tropie’ - w screaming IDFs
1971 Spider - Vesper -scrapped
1979 Spider - Seraphina - our son's car now sold
1972 Spider - Tortellini- our son's current
jetboy

Re: 1600 engine in 69 carb linkage

Post by jetboy »

seabeelt wrote:Cable runs from gas pedal arm inside the footwell to a bracket on the intake cam cover ( covers flex movement via the cable) then hard linkage to the carb.
yes, that is the later set up.. but i do not have that later gas pedal arm nor any of the linkage on the intake cam cover. my cam cover does not even have the pillars or holes to put said linkage. it would mean pulling all of that from a later car, which might be fine, but it also might just be something i could work out with the pedal arm I have. To be frank, I rather avoid having that very complicated mess of linkage on top of my cam cover when it looks so clean and pretty as it is.
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