Advanced Cam Enquiries.

[larkowen]

There's one mechanic recommend me to buy an advanced cam spoket(wondering if correct spelling or not) which act as an "add-on" device at the timing belt device.

Not sure how it works but he claimed it will improve car's speed,performance and fuel comsuption as well.He charge me for RM380 for it.

Anyway,anyone come across such term or not and what actually it does?

Please help :X-:

 

[jinkl]

no such thing as add performance reduce consumption, let us know the name of the device. i tink its a con job

 

[Maxx]

i think he means adjustable cam pulleys.

 

[larkowen]

He didn't say anything about pulley but he keep mentioning something to do with timing belt... yikes...

 

[g88]

advanced cam spoket ?? Adjustable pulley mostly....

 

[SkYwAlKeR]

should be adjustable campulleys la... since it is related to the timing belt...

 

[flushafteruse]

adjustable campulley doesnt really works with stock cams,stock campulley is enough for it...

 

[kenzo]

yup, true, unless u wanna retard the exhaust timing also can, better high end...

 

[larkowen]

Thanks all for the feedback..should be cam pulley since he did tell me that something more light.... wondering why he used that term to describe it..

 

[flushafteruse]

unless he offered u complete with cams set.....it would be nice..

 

[rollakid]

performance and fuel comsuption

its performance OR fuel consumption.

lol.. you can only choose one lol. thats why new cars all have variable cam phasing tech, so can have both, while adjustable one is fixed dead.

 

[Boink Boink]

Hmmm maybe got fuel improvement ma....

I mean if you advance the intake up to maybe 8 degrees its probably possible to get a reduction in fuel consumption, at maybe....6,000rpm? Only at 6,000rpm.

kakakakakaka.:shades_smile:

Sorry ah, dont flame me. But its amazing how things are taken out of context when talking to mechanics.

 

[nitrus]

I think the mech meant Lightened Crank Pulley? or maybe the mech said "Lightened undercam pulley" LOL.

That was what i was told from this PROTON MECH who tried to sell me the same thing. RM380 also ..

larkowen, the offered was made by which mech? a mech at proton?

 

[larkowen]

Yup.. a mech from proton....

 

[Boink Boink]

Yo Bro.

Ummm just flt that I should point you in the right direction. If you can, go get the book by Haynes, Alexander G Bell, Modern Engine Tuning. Hes got 2 others books as well. But I think the first, Modern Engine Tuning will be a good bet.

There is a whole chapter dedicate to why playing around with valve timing, by way of adjustable cam shaft sprockets or in some of the european fords etc, keyway slots, to acheive changes in the torque and HP curves.

In very lay mans terms, intake & exhaust valves can be equalled to how a human breathes. At rest, the breathing and exhaling can be fo rexample; intervals can be spaced apart.

When running in a marathon, well the breathing and exhaling requirements changes drastically.

Same as engines. well kind off. And I was not kidding about the 6,000rpm thing. It prob would get some sort of power increase, and prob save fuel if you clsoe the damned exhaust valve in time.

But there are problems like;
at low revs you get nothing and at low revs pratically all your fueland intake air will be going out your exhaust. Thats also assuming you can even get the damned thing to start.

hope this helps.