dont ask bout FC since its DOHC VTEC

its using dual-camshaft-thats already will consume mor fuel
then the valve also got 4 for each piston-another factor
then the engine block itself is racing-bred =more fuel

i drive both DOHC VTEC & single VTEC,i know FC of both car
dont tok kok here

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Added on April 6, 2012, 10:05 amracing bred=thats laymen term
means the material blok is different from single VTEC one

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Added on April 6, 2012, 10:06 amu dunno some engine got only 3 valve per piston?others even got 5 valve per piston

This post has been edited by e36.hartge: Apr 6 2012, 10:06 AM

u stupid or what?im toking that those cars are high fuel usage & giving reason what make its low FC

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Added on April 6, 2012, 10:24 amI also occasionally drive both my family's K20A & H22A la
of coz the DOHC VTEC realy sucks the much more fuel when ONLY VTEC kicks-in after 4000rpm

but on low rev,still cannot match singleVTEC car's FC

btw,u ever drive merc & bmw together & compare the FC?u know all merc are single-cam & all bmw are twin-cam?thats your lesson for today

This post has been edited by e36.hartge: Apr 6 2012, 10:24 AM

u stupid wan
merc all single cam la u dam dam
if AMG,not sure,maybe DOHC,never the inner engine in real life

This post has been edited by e36.hartge: Apr 6 2012, 10:50 AM

yes its single cam,V8 one,so who is laughing now?so who is gonna tanam his head now?
http://en.wikipedia.org/wiki/Mercedes-Benz_M155_engine
this V8 engine not only SOHC,but also with only 3 valves for each piston

but yeah,some others are DOHC as well,but its on V6

i agree that im stupid on some facts,but correct on other facts

This post has been edited by e36.hartge: Apr 6 2012, 11:04 AM

LOL
Dunno u r trolling me or what?normal inline4 DOHC engine got 4valves for each piston so total all 16valves,while v6 or inline6 DOHC normally total 24valves
But for merc V8 engine which is also SOHC,happen to hv only 3valves per piston/sylinder,equal to 24valves only instead of normal 32valves for V8 setup
This reduce low-end torque but high gain on FC instead of same car segment which using DOHC V8 with 32valves

Idiot u think my standrd that low?u even bother check my previous what it mean by 3valves per piston/silinder?
U ever drive SOHC V6 engine with 18valves instead of DOHC V6 engine with 24valves????and yes FC between both are so much different

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Added on April 7, 2012, 1:26 amIts the setting of each silinder la,and each manufacturer got their decision on how many parts should in the ngine
Even only using single cam,4valves can be attached to each piston
Its not fixed rule to say twin-cam must be coupled with 16valves
Heck even got 1 toyota engine(I forgot) DOHC inline4 but with 20valves(5valves for each piston) and it meant for high torque on low-end
Now u know its realy true afterall
But yes those I saw is 90s and early 2000 engine,nowaday got soft-turbo to assist high-torque on low-end without sacrifice FC

This post has been edited by e36.hartge: Apr 7 2012, 01:26 AM

Yes but generaly to reduce the production costs also
Coz high FC also contributed by GB and the weight of the engine itself(cast block cheaper and lighter than forged block) and the weight of the chassis as well

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Added on April 7, 2012, 1:51 amJust scared your GB end-up barai cannot tahan the additional torque-well up to u to decide,just get advise from year pomen if the GB suitalbe or not

This post has been edited by e36.hartge: Apr 7 2012, 01:51 AM

What say me?check merc V12 engine codename M275 for S600,its still SOHC with only 3valves per piston=36valves altogether instead of general assumption having DOHC and 48valves
Clearly merc setup this for low FC in mind since its a heavy and for daily usage car
Don't compare with another merc V12 engine codename M120 DOHC with 48valves since it for plonking in Pagani zonda body without concern bout FC at all

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Added on April 7, 2012, 3:03 amBtw merc w204 C200 CGI only use small 1.8 DOHC with turbocharger,they clearly want to squeze every possible torque and hp from that little twin-cam engine coz the chassis is quite heavy though

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Added on April 7, 2012, 3:10 amI think u must change the whole GB unit altogether,got better suggestion?
Forged block usualy tougher than cast one,eventhough it maybe lighter-its how u manufacture it is they not the material alone

Heh,later if got good one will PM u,but actualy I'm scared if I giv the wrong one who gv shitty service to u,end-up ruin my name also hehe


This post has been edited by e36.hartge: Apr 7 2012, 03:10 AM