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ks114
Joined: 23 Nov 2016 Posts: 13 Location: Kansas
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Posted: Sat Nov 26, 2016 5:41 am Post subject: New guy needs help! |
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Hi, This is my 2nd post here. Hope you can help. I just bought a 1981 924 with a Weber conversion. The problem is the vacuum advance isn't hooked up.
What port on the carb does it hook to? I Ve got pics of the carbs/manifolds if it helps. Thanks,Steve |
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Fifty50Plus
Joined: 28 Feb 2008 Posts: 1361 Location: Washington DC area
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Posted: Sat Nov 26, 2016 7:06 am Post subject: |
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Vacuum advance goes below the throttle plate. _________________ 1979 924 NA race car
1982 924 NA race car - Sold
1982 924 Turbo almost a PoS
1981 924 Turbo a real PoS, new engine
1982 924 Turbo nice body, blown engine
1972 911 E race car - going to Vintage
Various 944s to become IT-S race car |
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ks114
Joined: 23 Nov 2016 Posts: 13 Location: Kansas
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Posted: Sat Nov 26, 2016 7:15 am Post subject: |
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Is there a port there that I can put a fitting in? |
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The craig
Joined: 13 Nov 2015 Posts: 8 Location: Brisbane Australia
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Posted: Sat Nov 26, 2016 7:36 am Post subject: |
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There are a few different thougts on this some people take directly off the manifold others go for ported and multiple carbs make it more fun
I would go of the ported vac on the carbs and tee both ports together and to the dizzy _________________ 5 cars
two car garage
Somthings got to give |
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ks114
Joined: 23 Nov 2016 Posts: 13 Location: Kansas
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Posted: Sat Nov 26, 2016 8:59 am Post subject: |
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Are the fittings for the vacuum ports readily available at the parts store, or is this a Weber specific part? |
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MikeJinCO
Joined: 08 Jun 2010 Posts: 1228 Location: Maysville, Colorado
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Posted: Sun Nov 27, 2016 12:21 am Post subject: |
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I have a completely different setup because I'm at 8000', but the Redline folks had me plug/cap and not use the vacuum advance, go to a zero bypass on the accelerator pump jet(I think that is the right term) and set the ignition advance to about 15 degrees BTDC. At least 5 degrees of that is for altitude. _________________ Mike
'67 MG Midget Dp
'71 Ocelot Dsr Kawasaki 1000(under rebuild) |
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muffin787
Joined: 13 May 2015 Posts: 5 Location: Puerto Rico
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Posted: Mon Dec 05, 2016 1:19 am Post subject: vacum advance |
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I convert my 1980 924 to webber many years ago. I don't use the vacum advance. if you have two side draft, you will notice a pulse vacum. It make very difficult or impossible to set the advance. You will only have to work with the mechanical(centrifugal) advance. _________________ Porsche 924 1980, 944 brakes, GM alternator, GM Master Cylinder, 40decoe weber, Crane ignition module. |
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Rasta Monsta
Joined: 12 Jul 2006 Posts: 11724 Location: PacNW
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Posted: Mon Dec 05, 2016 4:43 am Post subject: |
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Path of least resistance is to have your distributor recurved for straight mechanical advance. There are many specialists who can readily do this.
Next choice is Ignition 123. _________________ Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
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RC
Joined: 25 Mar 2007 Posts: 2636 Location: Australia
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