[TypeR]

The Perdana V6 engine, is it DOHC or SOHC ?

I hope they're referring to DOHC per bank of cylinders, otherwise they're
cheating.

[bummer]

m-power denotes engines that had a hand from bmw motorsports department

[ManB]

PotenzaG3,

I tot the CVVT or VVT-i or the like are the Engine not gearbox. I tot
gearbox are on those tiptronic/shiftronic/sportronic stuffs? No?

The CVVT/VVT-i are all 20 years technology by the Europeans being adapted
only recently by Japanese and they make the hell out of noise...some ppl..

[nocar]

huh!

Let's take a normal 1.6l engine block in-line design with 4 cylinders and
4valve per cylinder (16valve altogether).

With SOHC, the engine has 1 camshaft that control open/close of all the 16
valves. It is cheaper to the manufacturer as using only 1 camshaft and
less complex to design. But not flexible in squeezing as much performance
or fuel-efficiency from the engine as you can only play with 1 camshaft.

With DOHC, the engine has 2 camshafts - 1 cam control the intake valves
and another 1 control the exhaust valves. Since 2 is more than 1, it is
more expensive for the manufacturer. But engine designers have flexibility
and more fun as they can play around with 2 camshaft profile whether for
performance or fuel efficiency or just for the sake of stamping DOHC on
top of the engine block...hehehe!

just type "DOHC" in Googles lah.

[PotenzaG3]

CVT is belt driven gearbox... CVT ---> Continuously Variable Transmission

dun believe?


http://asia.vtec.net/article/DriveMMT/

VVTi is engine... actualy these type of engine is Variable Valve timing
engine, same like Honda`s Vtech engine

[cax]

Perdana V6 engine is of DOHC type but with no variable valve timing. VTC
in Nissan vehicles like the X-trail refer to its variable valve timing.
Campro(Camshaft Profiling) is also a form of valve timing technology.

[BridgestoneRE711]

actually not european cars which pioneered the technology.

honda is pure copy cat and make hoo haa with their product and many people
mistaken that they are the pioneer .

VTEC technology is actually Alfa romeo technology for almost 20 years ,
that is why the old alfa is always a good runner ...

i-DSi technology is actually from alfa romeo too , it is named as twin
spark for alfa .

those pioneer which keep silent but copycat makes hoo haa with it .

[nolocal]

Hey hey,

You seemed to know a bit about cars, I hope you are not driving a Waja
anymore, and if you do, I hope it's not an auto. I have never driven such
a lazy gearbox b4 - lousy torque converter so to speak. They may not have
communication b/w the electronics dept and the design - good response
from the gearbox electronics, but a lousy sluggish coupling device.

Maybe I should stick back to a manual with a single plate solid race
clutch I had on my Celica Turbo 4WD.

Thanks.

[PotenzaG3]

????? so what u wanna tell us?

[ManB]

PotenzaG3,

U maybe right as these terms but the Japs are rather
confusing...anyway..Alfa is European...so, am I right or wrong? Anyway,
the 156 if I got the code right got the selespeed a problematic
gearbox..now solved oledi...so, I heard any selespeed prior to 2004 got
gearbox problem...

So, if CVT is on gearbox does CVVT is the same..? I dunno I am
asking...coz CVVT reads Continuous Variable Valve Timing?