Desooting the intake preheating pipe of an aircooled VW
A blocked pre-heating pipe on a VW aircooled engine may be a major reason for stalling engines shortly after start, especially under humid and or cold weather conditions.
During the restoration of the engine it is quite often forgotten to decarbonize the pre-heating pipe of the intake pipe. You will certainly have heard or read about methods to 'decoke or desoot' this preheating pipe, whatever it is called.
I find it the easiest way to knock the preheating pipe with a hammer so that you 'generate' some trembling of the steel causing soot and rust to come off from the inside of the preheating pipe.
To ensure trembling (resonance) of the steel pipe you can better hold it in one hand and hammer it with your other hand . Do not tighten the pipe in a work bench since this will prevent the steel pipe to 'tremble'.
Knocking with the hammer may take about half an hour to gain a good result, so don't give up !! Do not knock too hard to avoid damages or dents in the pipe. Mind NOT to hammer too hard on the aluminium casted part either (which holds the intake pipe and the preheating pipe together) to avoid cracking of the aluminium. The video shows how much debris came out of this one pipe.
So this way of 'desooting' is worth doing in my opinion, rather than making holes in the pipe which have to be closed by welding afterwards.
Once the hammering operation is finished you can respray the entire intake pipe assembly with zinc spray so that is becomes a genuine look.
After re-installing the intake pipe on the engine you will notice that the left hand and right hand side of the preheating pipe will have the same temperature after the engine has been running for about 4 to 5 minutes from cold (or even in less time) !
Good luck !!!!
Alfred - Belgium
air cooled vw heat riser repair
this is a little how to on blocked heat riser tubes on most vw upright
engines, witch cause stalling and flat spots in accelerating,
1967 VW Bus Engine Backfiring
I just reinstalled the newly cleaned intake manifold and generator - but
I've still got problems. After getting the thing to idle, and testing w/
WD-40, I suspect a vacuum leak in the right end casting. I will pull it
off and try to refit it correctly.
Check out my blog for more progress updates!
Plan B, Karmann Ghia, racing @ SCC 2012
Racing my Karmann Ghia at SCC 2012. Engine is a 2332, FK87, CB Super 04
Super Pro heads, Dellorto 48 tri-jet. Had engine struggle, so this is the
only good run on tape.
Crash test Volkswagen Passat#2
Crash test VW Passat#2
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RADIAL ENGINE MADE OF AIRCOOLED VW-PARTS!
This 2086cc 7-cylinder radial engine is made of aircooled volkswagen parts.
The (mostly modified) used parts are cilinders, pistons, cilinderheads,
pushrods, bearings, valvetrain, oilpump and starter of a 1200 Beetle.
The engine has electronic ignition, fuel pump, and a double Solex 2 x 40mm
The rest of the needed parts are made by myself.
1973 Volkswagen Super Beetle (VW 1303) Start Up, Exhaust, In Depth Review, and Test Drive
Hello and welcome to Saabkyle04! YouTube's largest collection of automotive
variety! In today's video, we'll take an up close and personal, in depth
look at the 1973 Volkswagen Super Beetle.
During this presentation, we will take a 1st person look at what the
vehicle is all about beginning with the start up, performance data, fuel
economy, the occasional track data, and build quality. Also, I will teach
you how to use most of the interior and exterior features in a detailed
fashion, that before, you could only get from going to a dealership
yourself! Throughout the video, I will highlight key styling and unique
differences about the vehicle, any available options, and of course it
would not be an enthusiast car video without the good ole engine portion
with rev and Exhaust note with
interior and exterior perspectives. A thorough tour/review of this car
designed to give others a greater overall appreciation of the vehicle.
FOR MORE INFORMATION ABOUT THE CHANNEL SEE BELOW: In this channel you will
find in depth educational videos of automobiles from all over the world,
presented in a more detailed fashion than ever before. Basically, this
gives the viewer the chance to view the most detailed 1st person look you
can get without going to an actual dealer yourself! Every video is
consistent in the way I present so viewers know what to expect in my
presentations. I treat every vehicle with the same respect whether a 1960
Chevrolet Impala SS or the 2012 Lamborghini Aventador. I film all types of
vehicles from past, present, and future while broadening the knowledge of
the automotive enthusiast. You will see everything from vintage, brand new,
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built it up from amateur videos years ago to what you see today. I wanted
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sure to explore the massive video variety, have fun and enjoy The Driver's
Seat of YouTube!
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Air Cooled VW Thrust Repair
Here's a neat trick to save your air cooled VW engine block when the thrust
had been knocked out and a double oversize thrust bearing won't work. Watch
as John Edwards @ Costa Mesa R&D Automotive Machine Shop shows you how he
repairs this problem. (949) 631-6376