saran bro, I dunno what to to check on camshaft.
AFAIK, if we have the blueprint to the camshaft, such as the dimensions so we can measure it, for one. When put back to engine head assy, make sure use torque wrench. Can ask Yamaha service center what's the torque to tighten that. Check clearance to the valves, etc...

no bro.. jz a Ah-Lek-Jet carb.. hehe wish i could get my hands on one of those Dellorto
hey charge, wats the diff between the 250 deg cam u r using wit a FZ150i cam?

This post has been edited by saranjeevi: Feb 28 2010, 05:17 AM

ah lek reboring sentul?

i think RXZ..

alo kt post yg mane dak jual body LC ?

i saw a shop near jalan pasar got 1. maybe other than that got too. u guys?

at V1..but last time i sms got no reply from C.K.Lim..out of biz?

http://forum.lowyat.net/topic/499107

thx ...

better throw this off. rebore carb will have screwed up air-fuel mixture at various rpm. engineer design the carb at certain dimension with purpose.
I have tried rebored standard carb (22mm to 24mm). throttle response varies across rpm.

Just let me know when you are going. I'll talk to him and you will have some offer.


theoretically FZ cam got higher top end power and lower low end torque.
In real case, I dont know. never install FZ 150 cam into my bike before, cannot tell the feel.

i'm torn between both of tis cam.. i'm looking for a cam which can rev up to 10k rpm on 4th gear with decent low-end torque wit my 57mm block and std carb... is tat possible wit the 250deg cam?

This post has been edited by saranjeevi: Mar 1 2010, 03:59 PM

Wat cam can let me rev smoother as riding a lagenda or revo... I cant tahan the engine keep arrgggghhh to ask me change gear i wan to rev longer....

impossible with 57mm + standard carb. The engine potential is limited to either top end or mid range.

even you changed cam, the exhaust gas will be trapped in the pipe too.
camshaft and pipe must match well.

anyone here pnah potong head? nk tau performance mcm mna..hehe

IINM, potong head or jek road got same purpose, to increase compression inside the block.
Anyone care to explain more regarding this. Coz sometimes i heard they jek the road around 2-3mm to increase the performance and the effect quite significant...

u right..i knew this foreman..he modi satu lc ni..dr bhgian engine naik sampai atas ke cdi..performance mmg tip top..meter lc moto tu siap dia buang logo yamaha..meter siap boleh pegi nk sampai 0..kalau ikutkan dah lepas 200kmph..i've tried that lc myself..wahh..melompat-lompat..machine spec termasuk blok 60mm,cam racing cms,mainjet 140,carb std,potong head,buang sarang n modi manifold std pipe, cdi brand 'rahsia' by that foreman..gila pnya moto..

higher compression ratio makes the air-fuel charges mixed better, hence increased the efficiency when we spark the mixture. but this will damage the engine quickly because it is very stressful. I have tried potong head 0.6mm, effect is good, but not a WOW factor. The most WOW factor I got is changing block + piston, and secondly swap to NOB1 SSS with no air filter.

This post has been edited by charge-n-go: Mar 2 2010, 02:34 PM

NOB1 SSS n NOB1 Triovale..which one better?

triovale of coz.. but attention seeker

lol.. i was using the same carb, but RXZ's carb that was originally made in japan with the emboss words on there. i was using 3 RXZ carbs before.. 2 of 'em is made by taiwan and another one is fake, but the performance drop after a few months of used. But after been changed to original made in japan.. the performance just cool until now.