1) Twin carb like weber?
2) Will camshaft worsen FC?
3) What is port polish?
5) What is LSD? Used for?
6) Head skimming will result in quicker engine break down right?
7) Hi flow will surely gg the FC.... Not my target... >.
If any of the option upgrade can increase power without worsening the FC I can go for it.. Lets say for Weber, surely cannot already imo... Btw, sometimes when I press the fuel pedal, why I can hear tacking sounds one? What is that about? That sound became more obvious after the mechanic changed the fuel air ratio of my car i think...
1) twin carb is something like 4-throttle for fuel injection engine... this is twin weber dcoe...
http://i.ytimg.com/vi/zUDPPTTOfm4/0.jpg
4g15 with twin weber dcoe
http://i34.photobucket.com/albums/d144/ayell/Kereta/DSC00503.jpg
4g91 with twin weber dcoe
4) depends on the camshaft profile... the wilder the cams, the higher the fc... most highcam aim at increasing horsepower at mid-high rpm... hence, u will lose bit of low end torque...
and of coz u've heard of more power means more fc...
3) port polish means making the cylinder head intake and exhaust port bigger and smoother...
oem vs pnp head
5) LSD stands for limited slip differential... for example doing a U-turn... ur inner wheel travels less compare to outer wheel... in normal road cars we have open differential which allows left and right wheels to travel different speed... LSD limits the difference... hence, power can be transfered to both wheels more evenly... google up for more info, i cant explain everything here...
6) not necessary... skimming the head too much will cause high compression... when a high compression engine is not well tuned, it can cause overheating and serious detonation.. this is where the damage comes in...
7) high flow not necessary GG the fc... fc depends on ur carburetor tuning and as well as ur right foot...
the ticking sound is knocking or pinging sound... symptom of pre-ignition or in other words called detonation... vr normal for 4g1x engine, especially carburetor ones... to eliminate or reduce it, use fresh sparkplugs, retune ur ignition timing and retune ur carburetor....
what abour for city driving? low fc and good acceleration. cuz 4-1 are for high revs.
i was actually thinking of 4-2-1 but i would not like to lose out in top speed too. as in not too much laa haha. what piping size would be ideal?
thanks anyway =)
4-2-1 should be ideal for street use... 1.7" piping ok adi....