Should it be 0 Deg or 10 Deg?

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jandarah
Posts: 113
Joined: Thu Apr 30, 2015 1:52 am
Your car is a: 1977 124 Spider
Location: Mount Hallen, Queensland, Australia

Should it be 0 Deg or 10 Deg?

Post by jandarah »

Hi,
I'm in the process of setting the static timing on my 1756, after a timing belt and pulley replacement. Reading some pages, it says zero (0) degrees and others say ten (10) degrees BTDC, for the 1756 motor. Some also tune by ear for best response. Now, I realise that changes are and can be made, but what is the best starting point please, 0 or 10?

Cheers,
John in Oz
First Fiat: 1970 124 sedan 1970 - 1976
Then horse float towing vehicles up to present.
Current Fiat: 1977 124 Spider 1756cc with twin Weber 40 IDF's
1970 124BC coupe; 1756cc with twin Weber 40 IDF's, used for sprinting
So Cal Mark

Re: Should it be 0 Deg or 10 Deg?

Post by So Cal Mark »

0 was based on complying with emission standards, you'll find better performance at 10btdc
jandarah
Posts: 113
Joined: Thu Apr 30, 2015 1:52 am
Your car is a: 1977 124 Spider
Location: Mount Hallen, Queensland, Australia

Re: Should it be 0 Deg or 10 Deg?

Post by jandarah »

Hi Mark,

Terrific, that tells me what I wanted to know. My Spider is ex California, imported into Australia in the late 1980's. Besides the RHD conversion, all the extra US emission stuff was removed. 10 degrees it is...

Many thanks, what a great forum.
John in Oz
First Fiat: 1970 124 sedan 1970 - 1976
Then horse float towing vehicles up to present.
Current Fiat: 1977 124 Spider 1756cc with twin Weber 40 IDF's
1970 124BC coupe; 1756cc with twin Weber 40 IDF's, used for sprinting
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