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Classic Goldwing Technical Forums
Engine & Fuel System Modifications
Single Carb Conversion 2 Barrel Progressive Holley,Weber 740 carb
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<blockquote data-quote="westgl" data-source="post: 95323" data-attributes="member: 2025"><p>The Guys on the 914 Porsche sites hate those VW plenum manifolds because of the freezing air/fuel charge and the fuel dropping out of atomization suspension, into droplets</p><p></p><p>I just realized how many forums i am on and it is way to many, I got to many projects I have 2 Porsche 914's one is that Subaru 2.5L engine, Porsche or Pushmes as they call them.</p><p></p><p>They hate them because of the Long intake runners causing the cold/icing issue, and use dual carbs, to get the heat into the manifold/carb, shorter manifold, heat from head No problem.</p><p></p><p>It is harder to heat a air cooled engine, you could use a oil line up to the VW manifold base, </p><p></p><p>For the Goldwing with icing issue, </p><p></p><p>I would use 1 tube in both radiator, charge & return hose's, thin wall tube, with a outlet a smaller diameter hose maybe 1/2 id going to the bottom of the VW manifold, weld two tube's under the manifold with fittings.</p><p></p><p>This should provide plenty of heat.</p><p></p><p>The reason why i keep bring it up is that Tom the GM engineer, that I talked to said that people think they dont have to have heat to the manifold, he said to ELIMINATE drive-ability issues Heat is a must, I asked him about heated intake air, exhaust heat routed to the manifold, he said Do it right and provide Coolant heat and be done with it.</p><p></p><p>Tom was a GM engineer, so I think he knows what he is taking about.</p><p></p><p>If nothing else it is information to keep in the back of your mind if problems come up that cannot be solved.</p><p></p><p>Link to Manifold heat from TOM</p><p>_____________________________________________________________________________________________________________________________</p><p>*** But!!! ***</p><p></p><p>I have to say I am Not experiencing any of those problems that Tom listed at all, currently, maybe when the weather changes, I may.</p><p></p><p>Till then Iam running it as is, No Heat</p><p></p><p>This is Only a FYI</p><p></p><p>I will not be adding heat till I am forced, </p><p></p><p>So if I start complaining that my Darn single carb wont run, please refer me back here to re-read this post</p></blockquote><p></p>
[QUOTE="westgl, post: 95323, member: 2025"] The Guys on the 914 Porsche sites hate those VW plenum manifolds because of the freezing air/fuel charge and the fuel dropping out of atomization suspension, into droplets I just realized how many forums i am on and it is way to many, I got to many projects I have 2 Porsche 914's one is that Subaru 2.5L engine, Porsche or Pushmes as they call them. They hate them because of the Long intake runners causing the cold/icing issue, and use dual carbs, to get the heat into the manifold/carb, shorter manifold, heat from head No problem. It is harder to heat a air cooled engine, you could use a oil line up to the VW manifold base, For the Goldwing with icing issue, I would use 1 tube in both radiator, charge & return hose's, thin wall tube, with a outlet a smaller diameter hose maybe 1/2 id going to the bottom of the VW manifold, weld two tube's under the manifold with fittings. This should provide plenty of heat. The reason why i keep bring it up is that Tom the GM engineer, that I talked to said that people think they dont have to have heat to the manifold, he said to ELIMINATE drive-ability issues Heat is a must, I asked him about heated intake air, exhaust heat routed to the manifold, he said Do it right and provide Coolant heat and be done with it. Tom was a GM engineer, so I think he knows what he is taking about. If nothing else it is information to keep in the back of your mind if problems come up that cannot be solved. Link to Manifold heat from TOM _____________________________________________________________________________________________________________________________ *** But!!! *** I have to say I am Not experiencing any of those problems that Tom listed at all, currently, maybe when the weather changes, I may. Till then Iam running it as is, No Heat This is Only a FYI I will not be adding heat till I am forced, So if I start complaining that my Darn single carb wont run, please refer me back here to re-read this post [/QUOTE]
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Classic Goldwing Technical Forums
Engine & Fuel System Modifications
Single Carb Conversion 2 Barrel Progressive Holley,Weber 740 carb
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