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engine differences

 
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stevecarrcross
Alfasud


Joined: 25 Aug 2013
Posts: 28

PostPosted: Sun Sep 22, 2013 8:13 am    Post subject: engine differences Reply with quote

Using a list of engine codes it appears I have a 301.68 sudb1.35/Sprint 63bhp in my grasser

Out of interest what's the difference to all the 1.35 engines thAt allow then to vary in power from 63bhp to 86

Steve
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LoneWolf33
Alfa Arna


Joined: 21 Sep 2013
Posts: 22
Location: Budapest, Hungary

PostPosted: Sun Sep 22, 2013 11:47 am    Post subject: engine differences Reply with quote

Hi,

I think the main reason of the power variation between the 1351cc engines is the fuel feeding.
Some models were supplied with single carb with double barrels, while other models were equipped with double carbs (double barelled too).
Because of the different antipollution regulations, the carb jetting could be different as well, and there were differences in the fuel octane rating between countries.
Different jetting was also required to modify the ignition advance curve accordingly, therefore the distributors were slightly different as well.

As far as I know, only the 1186cc engines were produced 62/63bhp, while the 1351cc ones are ranging from 68bhp
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eagle3
Alfa 33


Joined: 11 Nov 2007
Posts: 402
Location: France

PostPosted: Sun Sep 22, 2013 6:48 pm    Post subject: Reply with quote

The first suds had 1186 cc engines(63 bhp, single carb), then 1286cc(68 and 76 bhp), then 1351.
_________________
Alfa33 QO 1984
Alfa33 1.3i.e. 1994
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SUD 145
Alfa Arna


Joined: 15 Sep 2013
Posts: 6
Location: West Sussex

PostPosted: Sun Oct 13, 2013 11:38 am    Post subject: Re: engine differences Reply with quote

stevecarrcross wrote:
Using a list of engine codes it appears I have a 301.68 sudb1.35/Sprint 63bhp in my grasser

Out of interest what's the difference to all the 1.35 engines thAt allow then to vary in power from 63bhp to 86

Steve
Hi your engine code is the same as mine which is original in my S3 1.3 Ti fitted with twin Dellortos
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