Intake Manifold Spacer Mods

[magoconnor]

Hello. 

I want to know if anyone has tried experimenting with the intake spacer. 
Maybe trying out different length and materials like this one from naraku (link below)
Or is it better leaving it off? 

I have found a website, were you can calculate the precise length. (link below) 


static.speedline.dk/ai/800/images/products/NK200.04.jpg


www.velocity-of-sound.com/velocity_of_sound/calculator2.htm

[Happypancake!]

I've experimented and found good results.

15" from the filter to the intake valve seems to be ideal.

Where did you find the spacer?

[magoconnor]

Cool Stuff, have you tried raiseing the intake manifold?
What size carb are you running?
What size bore diameter? stock head?

[Happypancake!]

The stock Met/Ruck carb for the 49cc is 18mm.
My 58cc Met w/ cam upgrade has a Keihin PC20 - 22mm. The PC10 is also 22mm.