wt-668 walbro or wyk 15mm walbro?

[npablo]

I just wanted to know which is a better kit for my 47cc motor or actually 51cc (big bore kit). Thanx

[tblumer]

The big bore still isn't a true 50cc, it's like 48-49cc, if you add the stroker crank it'll bring you to 53cc. I use the wt-668 with my big bore set-up, and Mega uses a wt-668 with his stroked big bore. Supposedly the wyk are better at staying in adjustment. My .02 cents.

[mega]

the main difference with the wt and the wyk is the following:

the wt has a butterfly throttle (simmilar to the one in a car)

and the wyk has a barrel throttle, (usually like the stock carb on your bike, assumming you have a cag/pocketbike) they both have simmilar throughputs since they're both 15mm carbs.

what i noticed withthe wt-668 is that my throttle is at WOT with a little shy of 1/4 turn on the handle. therefore the throttle response is a little jumpy (for me, since i have every internal mod :-) )

the wyk should have more 'twist' on the handle which has a small decrease in response.

they both perform the same, and i feel that the wyk is easier to tune. the wyk also has a better throttle feel in turns since its not so jumpy. (almost ate it on a turn bc of mine heheh.)

hope that helps.

(tblumer, hows the bike running? i got everything installed, the only thing it vibes like no other lol. how where is your squish set? i set mine to around .3mm. i ended up using the 3mm spacer, and sanding it down by hand until the squish was around .3mm let me know if you need any help, it will be a while till i finish the writeup ;-) )

[tblumer]

Hey there Mega! I sent back the regular FF frame and grabbed a Lucky 7 frame from SUX2BU. So I'll probably do the crank install when I swap it all over to that frame. I'll definetely be hitting you up with some ???'s when I do the crank install!

[mega]

Hey there Mega! I sent back the regular FF frame and grabbed a Lucky 7 frame from SUX2BU. So I'll probably do the crank install when I swap it all over to that frame. I'll definetely be hitting you up with some ???'s when I do the crank install!

NICE!! man.. i want a lucky7 frame! let me know how it goes, just drop me a pm at pbp. thx!

[npablo]

Thanx for your input guys, appreciate it.