 Carb Sync And Tach ?Q's, Car breathed Fire today - First time in 10 Months! |
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| bandjoey |
 Aug 29 2009, 09:42 PM
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bandjoey  Group: Members Posts: 4,926 Joined: 26-September 07 From: Bedford Tx Member No.: 8,156 Region Association: Southwest Region  |
1. Dellortos 34's on my 1.8. Set up the sync on 3 of the 4 carb throats to perfect #5 on the syncometer. The 4th I can't get below #6. They were set to the Dellorto book standards before installation so they were all "identical" settings when starting. Suggestions? (IMG:style_emoticons/default/confused24.gif)
2. Using a Sunpro CP7676 engine analyzer. The Tachemeter reads about 800 RPM higher than the visual on the car tach. I think the Sunpro should be more accurate. Right or Wrong. Does the tach on the car go out of wack and read wrong? Is there a way to test the tach and/or adjustment the reading? (IMG:style_emoticons/default/huh.gif) Bill |
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| jmill |
Aug 29 2009, 10:13 PM
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Green Hornet Group: Members Posts: 2,449 Joined: 9-May 08 From: Racine, Wisconsin Member No.: 9,038 Region Association: Upper MidWest |
I don't know diddly about Dellortos. The Weber has air bypasses. If the Dellorto has them make sure it's closed on the high barrel. You might also have a vacuum leak on the carb with barrels flowing 2 different readings. Check for a leak on the one that flows 5. The 6 side will be tight.
If thats not it are they new carbs? If not you can check the butterflies with a feeler gauge. Make sure that the high flowing barrel isn't due to a tweaked shaft or butterfly. |
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