 914-4 with factory Webers |
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| daniel |
 Dec 5 2006, 10:47 PM
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#1
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Newbie  Group: Members Posts: 7 Joined: 29-October 06 From: Sydney, Australi Member No.: 7,112  |
Hi All
I have a copy of Brian Long's 'Porsche 914 & 914/6 The Definitive History of the road & Competition Cars'. In this book it makes two mentions of a 1.8L 914 for the European market, fitted with the AN85 motor using 2x twin choke webers. Fitted between 1974-1975. What I need to know is, firstly is this information correct? The only other factory carb references I can find are to Solex 40pdsit's. 2x single choke. If this is correct, what model/size of webers were used and what other publication (or other?) can verify this. Thanks in advance for everyones help. Daniel |
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| Aaron Cox |
Dec 5 2006, 10:48 PM
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#2
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
i have only heard of the solex's and the euro 1.8 had 2 SINGLE barrel bus carbs.....
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| Joe Bob |
Dec 5 2006, 10:54 PM
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#3
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Retired admin, banned a few times Group: Members Posts: 17,427 Joined: 24-December 02 From: Boulder CO Member No.: 5 Region Association: None |
Fuel Injection or single barrel twin carbs like Aaron mentioned....
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| Aaron Cox |
Dec 5 2006, 10:55 PM
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#4
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
but what about the magical VW pn and logo weber/solex manifolds?
werent they the stipulation for running carbs on a 914 in SCCA? |
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| Dave_Darling |
Dec 6 2006, 12:08 AM
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#5
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914 Idiot Group: Members Posts: 14,985 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California 
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Long's book, while nice, has quite a few errors in it. This is one of them...
I believe that SCCA requires dual two-throat carbs, with (no more than) a specific throat size. Webers, Solexes, or Dells (or whatever else you can find!), the brand supposedly does not matter. --DD |
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| Trekkor |
Dec 6 2006, 12:27 AM
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#6
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I do things... Group: Members Posts: 7,809 Joined: 2-December 03 From: Napa, Ca Member No.: 1,413 Region Association: Northern California |
I'm like a broken record over here... (IMG:style_emoticons/default/dry.gif)
Was the cam different in a 1.8 F.I. compared to a dual Solex carbed motor? Were there any differences in cam profile from 1.7-2.0, all flavors, for that matter? I really need to know. (IMG:style_emoticons/default/confused24.gif) KT |
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| Dave_Darling |
Dec 6 2006, 09:41 AM
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#7
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914 Idiot Group: Members Posts: 14,985 Joined: 9-January 03 From: Silicon Valley / Kailua-Kona Member No.: 121 Region Association: Northern California
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Theoretically, all of the 914s used the same cam grind. Carb'ed or FI, 1.7, 1.8, or 2.0--all the same.
In fact, I am told, there were variations over the years. I believe it was the duration that changed slightly, as they moved the valve opening points around to work a little better with the various EFI incarnations. However, all the cams had the same part number and the later versions superceded the earlier ones in the supply. If anyone has saved the URL for Hugo's (from the Netherlands) old website, we could check on archive.org for it. He had pictures and explanations of the different stock cams. (He also had a few "interesting" pics of his car with various guests...) --DD |
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| Jake Raby |
Dec 6 2006, 10:17 AM
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#8
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Engine Surgeon Group: Members Posts: 9,394 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
QUOTE(Dave_Darling @ Dec 5 2006, 11:08 PM)  Long's book, while nice, has quite a few errors in it. This is one of them... I believe that SCCA requires dual two-throat carbs, with (no more than) a specific throat size. Webers, Solexes, or Dells (or whatever else you can find!), the brand supposedly does not matter. --DD Webers dellortos or solexes in 40mm butterfly sizes. F prod can have a 36mm venturi at maximum.. the AN coded 1.8 914 engine had a cam all it's own and the highest CR of any Type 4 ever factory built, no matter the size.. Those 1.8s have better power than a US spec 2.0/914! Not more power, but BETTER power! |
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