Vacuum advance is a fuel economy device. A weber isn't.
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| Where to Run Vaccum Advance ? https://www.ausmini.com/forums/viewtopic.php?f=5&t=64705 |
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| Author: | 76van [ Thu Jul 29, 2010 8:52 am ] |
| Post subject: | Where to Run Vaccum Advance ? |
have a 45dcoe weber on my 1275 & can`t see anywhere to run the vaccum advance to. there are no vaccum ports on the manifold. was thinking i might have to drill & tap the manifold unless anyone has another idea. all help appreciated jayson |
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| Author: | awdmoke [ Thu Jul 29, 2010 9:00 am ] |
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Forget the vacuum advance with a Weber. You won't get enough decent negative pressure for it to work. |
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| Author: | 76van [ Thu Jul 29, 2010 9:19 am ] |
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ah ok, thanks for that |
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| Author: | slide [ Sun Aug 01, 2010 6:28 pm ] |
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Yeah, ditch it. Real Men don't do vac advance! |
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| Author: | Morris 1100 [ Sun Aug 01, 2010 6:32 pm ] |
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Vacuum advance is a fuel economy device. A weber isn't.
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| Author: | drmini in aust [ Sun Aug 01, 2010 6:44 pm ] |
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Morris 1100 wrote: Vacuum advance is a fuel economy device. A weber isn't.
Show me a performance engine that uses vac advance.. Alfa twincam? Nope- Fiat/Lancia twincam? Nope- Cooper S? Nope- If you have a decent duration cam in your A series, vac advance will do SFA anyway, even with an SU carb. So saith the cam grinder man with the engine dyno. 
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| Author: | 76van [ Mon Aug 02, 2010 9:18 am ] |
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yep no worries. think the weber is too big for my motor so going to an su anyway. thanks for the advice all the same |
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| Author: | subwayseth [ Mon Aug 02, 2010 9:30 am ] |
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why not try some smaller chokes in it? |
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| Author: | 1071 [ Mon Aug 02, 2010 8:35 pm ] |
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Vac advance will significantly improve your fuel consumption - which is what its there for. If you're happy paying 30% more for fuel each week (the effect it had on my commute) then don't fit one. Webers can be easily set up to return 30 mpg on an S which is not too shabby. Cheers, Ian |
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