68 911L carbs need to be rebuilt...what to do?
 

Hey guys,
Im looking at getting a 68 911l, the only problem with the car is that it needs the carbs rebuilt. Should I have the stock ones rebuilt or are there any good aftermarket systems that would give me improved perfomance? How much would a rebuild cost..thanks

send em to harry bieker!

http://www.biekerengineering.com/

Just rebuild them yourself -- it's not rocket science. The only not-DIYable parts are rebushing the shafts if it is needed. But as far as disassembly and reassembly with with new gaskets and stuff -- do it yourself. You'll learn a whole lot about how everything works and it only takes an afternoon or two.

Just like John said, rebuild them yourself. For less than $100 you can buy the rebuild kits (our host sells them). Disassembly is very easy and only requires a few hand tools. Once apart, soak the bodies and jets in a good cleaner. I use B-12 Chemtool for the jets and a bath of simple green for the bodies. Blow out all the passenges and jets with your air compressor set to about 90 psi. then reassemble. Make sure to pay attention to the secondary venturies that they are installed with the port to the correct side. Do one carb at a time so you have the other to refer to if you get stuck. Search the tech articles on the main page for parts diagrams.

You can also bead blast the manifolds and bodies to clean them up. Make sure to blow out all passages and that you tape off the throttle shafts so they don't get grit inside. It can be done but I recommend you not remove the throttle valves and shafts on your first rebuild.

Good luck!

A carb is a carb. YOu will not gain any performance by switching brands assuming they are jetted correctly.

confirm that the throttle shafts are tight before you start.

and Harry Bieker is most excellent.

yes.. you can rebuild.. but how warn are the shafts and butterflies? do they need reboared with a bigger butterfly?

are we talking orginal carbs or newish carbs.

i guess my questioned is do they need to be rebuild, or remanufactured. if they need remanufactured.. then you need to send them to a competent shop like bieker.

http://www.eurometrix.ws/ . Matt is great to work with.