I needed to order a new rubber flnge/adapter that fits between the 2 into 1 manifold and the carb on my MKIII.
I always assumed it was a 34mm that was on there so of course without looking, I ordered the part for a 34mm.
After measuring the dimensions of my old air filter so I could order a new K&N replacement something wasn't adding up.
I soon discovered I have a 36mm carb on there and soon ordered the proper rubber fitting and a new throttle cable just in case.
This prompted me to start this thread about 34mm vs. 36mm. I have heard the increased velocity of the air/fuel going into the head from a 34mm carb is better than a 36mm.
Thoughts or observations?
I always assumed it was a 34mm that was on there so of course without looking, I ordered the part for a 34mm.
After measuring the dimensions of my old air filter so I could order a new K&N replacement something wasn't adding up.

I soon discovered I have a 36mm carb on there and soon ordered the proper rubber fitting and a new throttle cable just in case.
This prompted me to start this thread about 34mm vs. 36mm. I have heard the increased velocity of the air/fuel going into the head from a 34mm carb is better than a 36mm.
Thoughts or observations?