[url=https://www.classicgoldwings.com/forum/viewtopic.php?p=102678#p102678:2eugemxz said:
Steve83 » Sun Nov 10, 2013 10:24 am[/url]":2eugemxz]
Nice! Gettin' close to the perfect setup.
Ok, I wanted to take this chance to explain something about what we're doing here and our intentions with all this testing.
Bear in mind that there has not been a "perfect" single carb manifold/carb combo designed that produces good performance together with a smooth idle and high (at least comparable to stock average of 43) MPG.
If that design is out there, I've never seen it.
I'm running 1" runners straight to the heads.
Joe is running slightly larger runners with venturi's inside.
westgl is trying out different designs.
Jungo is using 1.18 I.D runners and seems happy with it.
All 4 are using the VW type 4 plenum.
What I am after is.....
1. smooth steady idle.
2. Good acceleration
3. Good passing power
4. Foremost, 45 or better varifiable MPG
I've custom made the runners.
Custom made flanges
Added heat to help vaporize
I have tried the CI manifold and see it's too large of volume in comparison to the VW plenum and my 1" runners.
I have run and checked MPG with bigger runners on the VW plenum, checked mpg with my smaller runners.
I've leaned mine out, I've richened it.
I've eliminated the power valve.
Now I'm adding heat.
All these things are trial and error to find out the real scoop what is
actually needed to achieve the bottom line, best all out performance and good mpg.
The final outcome could be totally different than we expect it to be, as well as it's design.
Rough plumbing, unpainted mock ups, parts zip tied together..... It's all part of the simplest and cheapest way in the process of R&D and finding out what works and what doesn't work, or what is needed and what is not needed.
All mock up's no matter how bizarre or "unusual" are part of what is needed to come up with this ultimate design as each trial and error adds to what we all need to know, what works and what doesn't work.