abarth squadra storica forum
abarth cars - community => 1000 tc , radiale , replika => Topic started by: ChrisD on March 23, 2007, 10:45:20 am
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Just a simple question I hope. Does the A112 903cc and A112 1050cc engines use the same head? I found a A112 Abarth 70hp engine but it is missing the head. Finding heads from 903cc is no problem, but I don;t know if the Abarth head had bigger valves or any other dieferences.
I will get a head from a 903 engine and port-polish it. Can anyone tell me the correct valve size in order to use one 40DCOE carb???
Thanks for the help
Chris
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Hi Chris
I have a 1050 A112 short engine, I used a 903 Fiat 127 head no probs.
Regards Peter
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Thanks for the reply Peter, Do you know if the valves are the same size?
Chris
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HI,
I believe the A112 70 HP head will have marginally larger valves. Also the A112 head had a small "eyebrow" relief around the larger intake valve. As far as the combustion chamber is concerned, they are pretty much the same as the 850 and 903. I have used all of these heads, and frankly I cannot find any difference on the engine dyno.
Regards
Paul Vanderheijden
www.scuderiatopolino.com