got my evo tuned recently but it was low on power. it put down 450hp on the vdr....i wanted to see peoples opinions on my setup to see if i can improve it at all
mods:
built 2.4l 4g64/63
stock head
bc272s w bc springs
stock i/manifold
ported ex/manifold
fp black
2 1/2"cooler piping and ebay cooler
work 02 w 3"exhaust straight through no cat
fpr surge tank w 044
fic 1450s

we are leaning towards the cam timing being wrong so tell me what u think of the marks....these pics are with the crank at tdc.....i was thinkin i should get 4g64 dohc stock cam gears and a 4g64 timing belt and have it at 0,0...but im not sure i should

note; these are fidanza gears and the camshaft dowl is in the hole NOT marked evo. my mech put it that way so the degree markings line up to the rocker cover marks

thanx

 

Anyone?

 

UNless im backwards... it looks to be advanced?

and from what im told per aaron @ english racing
they need to be RETARDED 3.75*

and i could be backwards

 

you need better pictures so we can see it right at the mark line on the cover , wheres the crank mark ? it could look even on the cams but the crank can be off

 

Looks like exhaust is 3 CA late and intake is 4 CA early. So now you have 7 degrees more of overlap and both expansion and compression strokes are shorter.

But it really depends on the cams and where the ex valves open and intake valves close (i.e., 48 BBDC and 46 ABDC respectively), thats the info I would need to find optimal timing.

 

Crank is at tdc... It is not off... Some people say it should be 4 deg retarted and some say 4 deg advanced.... This where I'm confused....

 

But my tuner said the bc 272s could be restricting power??

 

bc cams are very unpopular on this site, most prefer gsc, kelford, fp, and cosworth because they make more power

 

get stock gears.

 

The BC cams ARE hurting power. Have the gears set on the 4g63 pins.

 

I hope you find the answer you are looking for so I can copy you mate getting slightly worried about what settings we should be using. I think I am going to degree my cams to make sure they are spot on.

 

not sure what all the confusion here is about? this is a non mivec motor, adjusting these cam gears is cake!!

basically line up the bottom end to TDC, the actual marks on the cam gears is going to be off, what you are doing with the degree markings on the gears is just moving the TDC marks to the valve cover marks, so essentially your new cam gear TDC marks is the inner marking on the movable inner park of the cam gear, move that to align to the valve cover markings regardless of where the outer gear markings are.

your intake cam gear should be spot on, and your exhaust gear is the one that will need adjusting.

 

how much power do u think these bc 272s are stealing? maybe i should get some kelfords or gsc......

 

now this is good info! thanx mate, its definatly something to work off....i was actually also confused about which markings on the gear to line up to the rocker cover marks

 

Your gears are on the dsm pins....not the evo pins