custom formula 4-2-1 extractor - GOOD

[Acoustic]

Hi guys

Last monday went to Ipoh and generally 140 160 with occasional 110 120, 170 180. Fuel consumption only 1/3 of what previously 2/3. Why so fuel economy suddenly??? Could it be because I did exhaust valve clearance to minimum recently.... highly suspectful ......... wah so dam good ah ........

But I keep thinking what else ....... OH, light bulb above my head :) My customer 4-2-1 extractor .... was optimised for 5,200 rpm :) And I was cruising using 5th gear at 5,000 rpm allot ...... Hahaahaha, shit, this extractor formula is GOOOOOODDDDDDD :) Investment worth while .......................

Hahhaha, so, who always go out station using 110 only? that would be around 3,500 rpm. Then start to make a extractor for 3,500 lor :) aahhahahah

sure jimat minyak gila :) ..................... yeah .........................

 

[rollakid]

how if no go outstation one and only city driving? no specific rpm range ler keep on changing..

 

[Acoustic]

no difference

 

[Acoustic]

I forgot to mention, my flywheel lighten from 6.8kg to 5.2kg and crank pulley ligthen from 1.6kg to 0.9kg - these contribute allot too

who says ligthen flywheel no top speed???

 

[4agze]

what's your top speed? :huh:

 

[Acoustic]

speed cut

 

[netmatrix]

Lighten flywheel no top spped meh? Doesn't make sense. Lighter should spin faster. No top speed meh? :unsure:

 

[QiW]

huh ??? lightened flywheelno top speed one mehh ??? i langsung tatau lorr ... i always tot if got power sure got speed one ??? hehehehehee ... :P