Auto to Manual Trans swap ?s

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Holshot
Posts: 268
Joined: Fri Apr 24, 2009 2:53 pm
Your car is a: 1982 TURBO Spider 1979 Spider
Location: Baltimore, MD

Auto to Manual Trans swap ?s

Post by Holshot »

Hey guys, has anyone done a automatic trans swap to a manual trans? I have a line on a good running '81 parts car that has a manual trans in and recently a '84 came up but it it has an automatic :cry: . I'm not really looking for another project since I'm still fiddling with my '82 but, I'm still on the search for another '83-'85 model to replace my last Spider which I miss terribly.

In theory the '82 turbo I have is always going to be my tinker toy and then the '84 would be my dependable driver, put the key turn it and go. Now the question is, is it a matter of swapping all the manual hardware ie. trans, clutch pedal, driveshaft ect... Or is there wiring involved? I'm great at turning wrenches but when it comes to electronics I'm lost. I think I read somewhere that the 83-85 ECUs are different to the earlier FI cars (80-82), not sure can anyone clear that up? Also is there then a difference from auto and manual ECUs or is there a separate trans ECU?

If the latter anything that needs to be done when swapping from auto to manual, any side effects? In the end is it worth the trouble? I know its a lot to ask but if anyone can fill in some of the blanks that would be awesome! Thanks
Giuseppe

1979 Fiat Spider
1982 Fiat Spider TURBO
1984 Pinninfarina Spider (gone but not forgotten)
So Cal Mark

Re: Auto to Manual Trans swap ?s

Post by So Cal Mark »

the auto trans is not electronic but the wiring harness does have provisions for a neutral safety switch and relay and the reverse lights also work from the shifter rather than directly to the trans reverse switch
vandor
Posts: 3996
Joined: Sat May 23, 2009 1:23 pm
Your car is a: 1971 124 Spider
Location: Texas, USA

Re: Auto to Manual Trans swap ?s

Post by vandor »

I've done the swap and it's pretty straight forward, but it's good to have a parts car so you have all the needed pieces.

> I read somewhere that the 83-85 ECUs are different to the earlier FI cars (80-82)

The later cars had a barometric sensor to compensate for altitude.
Csaba
'71 124 Spider, much modified
'17 124 Abarth, silver
http://italiancarclub.com/csaba/
Co-owner of the best dang Fiat parts place in town
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