how to determine fuel line size?

[takayuki]

Hi,

I'm currently redoing all my old fuel hardlines. I was wondering what fuel line size is suitable for these two different carbs.

Mikuni 44's

weber 48's

would stock fuel line size manage?

I have a early 260z

thanks

[esmit208]

Check the manufacturers specs on the exploded diagram or take a look at www.piercemanifolds.com. Good Luck!

[Mike W]

I cannot speak for the Mikunis but I have a fair amout of experience with triple Weber installations. I actually completed a total overhaul of the fuel distribution system from the engine compartment to the carbs and did a write up on this that you can find here:

http://www.classiczcars.com/forums/showthread.php?43489-Braided-SS-fuel-lines&highlight=braided+fuel+lines

I decided to keep my OEM hard lines from the tank to the engine compartment as they were in pretty good shape, but replaced everything after that with stainless steel braided lines. I was nervous about adapting the OEM hard line to a suitable AN fitting that would accept the braided lines, but in the end the OEM lines were close enough to 5/16" to make it all work. You can see a lot more detail about this install if you follow the link above.

If you have any other questions, just let me know.

Mike.