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Porsche Nut
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Split shaft Solex Carburetor
Can anyone give me some advice about how to rebuild Split shaft Solex carbs? I have seen a couple of specialist that do it, but the cost is very high. I was hoping to do it my self. Are all the rebuild kits out there the same? Where do I get new floats. The kits I have seen do not appear to include that.
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02-04-2010, 08:21 PM
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Registered
Join Date: Oct 2002
Location: Phoenix, AZ
Posts: 336
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356 Carb Rescue will do just the machine work and provide parts for a single shaft conversion. Best money you can spend on these carbs! Then you can get the rebuild kits from Pelican and end up with an excellent set of carbs.
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02-04-2010, 08:59 PM
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Porsche Nut
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Can someone tell me why the factory designed the split shaft originally and if they were/are so great, why would you do the conversion to make them single? I understand the conversion process and how that works. And from what I have seen it is a big improvement. I just don't want to make a mistake and covert an original part from my 68 to something it was never intended to be and then regret it. Thanks
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02-05-2010, 07:37 AM
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Registered
Join Date: Oct 2002
Location: Phoenix, AZ
Posts: 336
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The split shaft carbs have a better circuit design. The split shaft was done to tune each barrel but the rubber isolator wears and they fall out of tune, this part is available from ******** but it still a bit of a pain. 99% of the free world will not be able to tell if you have converted to solid shaft, if you have a big bore kit they can also be opened up to 42mm at the same time :-)
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02-05-2010, 07:26 PM
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Porsche Nut
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The engine was rebuilt before being parked with Mahle P&C and supposedly a brand new crank. So it sounds like I need to go ahead and send the carbs off to 356 Carb Rescue if I ever want the thing to run worth a crap?
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02-05-2010, 08:50 PM
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Moderator
Join Date: Dec 1969
Location: Left coast of North America
Posts: 287
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the split shaft was introduced when USA smog controls became more stringent
__________________
Rick Becker 912 owner since 1977 PCA 912 & 912E Register Advocate, 912 Registry Member #0001 http://912register.pca.org | www.facebook.com/PCA912Register | Twitter: @PCA912Register |
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02-05-2010, 11:38 PM
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Porsche Nut
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I got the carbs off the car. Talked to Will at C*P and he agreed, just rebuild them. They look to be in very good condition. Yes, from what I read, the splits were introduce in 68 for smog issues. But the only thing I have seen as a reason was that they supposedly allowed better/finer tuning of the carbs, which makes them more complicated, but better when they are dialed in. I will post a pic later.
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02-27-2010, 05:16 AM
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Registered
Join Date: Jan 2006
Location: North of the Bridge
Posts: 754
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I have never understood why the bad rap on split shafts or why convert them to solid. The only real issue is maintaining the block between the shafts. That is what, a once every 15-20 year issue that is an easy fix with a piece of cut fuel line? The advantages way offset the disadvantages.
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Free will is doing what we must joyfully. Jung '68 912 Coupe '82 SC sunroof |
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02-27-2010, 05:22 PM
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Porsche Nut
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Quote:
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02-27-2010, 07:45 PM
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Moderator
Join Date: Dec 1969
Location: Left coast of North America
Posts: 287
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The buffer block for split shaft carburetors are still available, part # 692-100-993-01, 2 req'd, Fits Solex 40PII-4, $2 each
You might want to check out the "Synchrometer" to best adjust them
__________________
Rick Becker 912 owner since 1977 PCA 912 & 912E Register Advocate, 912 Registry Member #0001 http://912register.pca.org | www.facebook.com/PCA912Register | Twitter: @PCA912Register |
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03-01-2010, 10:22 AM
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912
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911S
