Head Work and Custom Cams

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2001 323 Astina SP20 (P5)
Well boys and girls....the ported head and custom cams are in my car.

the install took me 6 hours taking my time. obviously wanted to make sure it was done right. my hands are cut like i've been playing with razor blades and my back is killing me, but i dont care. timing was a lot easier to set up this time because i've done it twice before so it only took my 2 goes to get it right.

before i go further, sorry wasnt able to take pictures, my fiancee's digi cam is screwed and my mate was at work so i couldnt use his.

now, how the head looked. FAAARRRRKKKKK!!!! the intake runners look much bigger and same with the intake manifold (had it port matched). everything looks brand new and very nice. it was easy to see the overlap before i put the head on as well. i cant remember how many degreed overlap was put into the cams.

flow figures - the printer at the head shop was screwing up and printing different head data even though mine was selected. appartnely they are fixing it up and posting it out to me today (tuesday aussie time).

anyway, initial impressions. rough idle with lope, although i'm guessing a good 80% of that is due to the AWR rear engine mount being installed.

driving. well first of all i need to raise the rev limiter now ;) hehehehe i only took it a couple of times to redline (6500rpm for the aussie car) and as soon as the VICS opens it takes off!!!!! it hits the rev limiter so damn hard!!!!!! i was going to try leaving the VICS shut in a week or so to see how that feels overall.

just normal driving around feels no different to before. i'm certain there is a little loss in low end power, but not hugely noticeable.

i'll be running the car in for another 500k's then i'll take it and get the thing dyno'd. i can definately feel the difference so i'll be hoping for 15-20whp increase. if i get that i'll be happy because the exhaust is so restrictive in stock form.

as soon as i get flow and dyno figures i'll post here....keep an eye out!
 
oh yeah, rpm details (doh)

under 3500rpm the car is a little down on power. from 3500rpm it starts to get a move along. on the aussie version VICS doesnt kick until about 5500rpm...once it closes up it really flys!
 
that's the system that makes the intake runners shorter at high rpm to generate more power. variable intake charge system or something like that...all protege's with the 2.0L FS-DE engine have it
 
Ahhh I see. So they close the runners at low rpms to get more torque and open them up at higher rpms to get more horsepower.. Cool !!.. TTY

When do you plan on doing the exhaust.. What will you be doing to the exhaust?
 
other way around. they are open at low rpm to make like a chamber which in theory makes the runners longer. at high rpm it closes to make the runners shorter.

exhaust - probably wont be doing anything as i plan on going turbo in the future
 
Hell yeah!!!! N/A all the way!!
How rough is the idle....I already have problems due to motor mounts and pistons so can't take much more.

Moose
 
well i've only just installed the rear engine mount so i dont have a before comparison, but going like that wouldnt be much rougher. would be the same in normal driving, just a little rougher at idle because of the cam lope
 
the rear mount will make your car shake like a mofo while idleing... i hate it.

to bad you dont have pics.. cant wait to see the dyno
 
yep dyno will be on the way on hopefully 1st or 2nd week of november (will give the engine plenty of time to settle and adjust a/f and crap)
 
sounds like it's time for a 500 mile road trip! Thanks for sharing all this stuff with us, twilight
 
very interesting....just subscribing to stay posted
 

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