Carb throat balance when tuning now a rebuild saga !, those with Zenith carbs can learn from my bad fortune ? |
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Carb throat balance when tuning now a rebuild saga !, those with Zenith carbs can learn from my bad fortune ? |
porschetub |
Aug 29 2023, 11:25 PM
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#1
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Advanced Member Group: Members Posts: 4,706 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
Doing a tune on my Zeniths ,cant find an exact rpm range and done a ton of research ;
Bruce Anderson mentioned 1800 in his book, Factory says 1000 in the gary.suggate site factory manual, Haynes manual tells us 1000. So far I have tuned throats @ idle ,1000rpm ,1400 and 1800 on hand throttle and strangely I get the same balance any way ?. Now thinking its not an issue but would appreciate feedback from 6yl guys with carbs,TIA,cheers |
rgalla9146 |
Oct 26 2023, 07:18 AM
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#2
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Advanced Member Group: Members Posts: 4,569 Joined: 23-November 05 From: Paramus NJ Member No.: 5,176 Region Association: None |
Be certain your timing is correct, advance is working freely through full range and returns to idle reliably. |
porschetub |
Oct 26 2023, 01:12 PM
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#3
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Advanced Member Group: Members Posts: 4,706 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
Be certain your timing is correct, advance is working freely through full range and returns to idle reliably. Thanks for the comment ,had just done that before the RH carb started leaking ,timing was out a small amount (retarded) @ 6000 rpm ,adjusted the idle speed as necessary . All this was made easier after having my tacho repaired with new driver board more accurate and no more erratic needle movement which it had before failing completely some time back. |
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