HKS cam gear arrives! yay!

[JH32]

You could put them in at home, and then tune them on the dyno?

[GTS-t VSPEC]

No point doing them if you don't have a dyno handy, casue 4deg ain't always the best, and seat of the pant's tuning doesn't tell the whole story.

See'ya:burnout:

[rev210]

If the cam timing, duration and lift are the same from one stock R33 to the next then so is the right cam gear dial in.

Timing and perhaps fuelling will need re-adjustment to better suit but, ultimately the effects in the combustion process are identical from one skyline to the next if the exhaust camshaft is the same. I can understand the need to check based on having an RB25 NA with the 4degrees of extra duration or an aftermarket cam.

'Seat of the pants' (feeling the G's) is not very accurate. But having a good ol drive around is what counts.

[GTS-t VSPEC]

Rev, It's amazing the effect that different mods will have on the engine, and while 4deg will most likely be correct, you don't necessarily want to tune it for max HP, but better torque.

See'ya:burnout:

[rev210]

GTS-t Vspec,

The good thing about the exhaust side is that the slight retard on the exhaust valve is helping the turbo out. You get peak power and torque as a result, at least when the turbo comes on boost which is nice and low on a stocker. I expect about 5kw @ motor more power but, also 4-5kw extra through from begining of the full boost rpm.

We will soon find out if the 1/4 results reflect the idea.

[GTS-t VSPEC]

It would be nice to see dyno results to confirm this, but you are probably right. If it makes an appreciable difference then I'll do mine aswell.

See'ya:burnout:

[rev210]

its on!

did it just after lunch. 30min job.

Now all I need to do is set the thing up.

At the moment I am driving around with two 'little notches' of retard. I did this as the HKS piece of paper is a little vague. It says every mark = 2 degrees.

However there are 'big marks' and 'little marks' on the adjustment wheel. Not sure if they are reffering to just the big marks or not. Anyone know?

Even the little I have adjusted seems to have sharpened up the midrange, to the detriment of detonation which I can see from the knock sensor is going to visit the moment I hit 5000+rpm. So later on I'll re-adjust the crank timing to suit.

[GTS-t VSPEC]

I think it is the big marks are the degree's but I don't want to say for sure, I thought it said on the actual cam gear itself. Don't drive it too hard until it's properly setup. If I do mine I'll get you to fit it:p

See'ya:burnout:

[rev210]

I been driving around and its more than fine dude. In fact, appart from the timing needing a little backing off, it goes better than before, shows more vacume too for some reason.

No the camgear is neat but, un-informative. It probably is the little marks, at least its good if it is cause I have set the gear up right already and don't have to re-do it.

[Micko]

Well done mate - I knew you could do it:)

How easy was the CAS? I snapped one of the bolts on mine yesterday - bugger - but Danny reckons it will be easy to sort out.

[GTS-t VSPEC]

rev,

Sounds good, I'll think about doing it after you run at the plex next and we see the results. More vacuum? That seem's to be the opposite to the way I would have thought, but who know's.

See'ya:burnout:

[rev210]

I could be wrong about the vacume thing, I'll check on the way home.

Miko,

The CAS is dead easy. Putting the Cam gear on with the belt lined up is a son of a bitch (elbow grease).

Broken bolt mate? Those brass bolts are very weak so they don't strip the thread in the soft alloy. Never over tighten any bolt like them they will break on you. The CAS will be fine being held in place by two I'm sure. It should be a peice of cake to drill it out of the alloy bracket.

[Micko]

Yep, apparently you just remove the CAS, the cover (as you did) & you can get to it easily. Remove the broken part of the bolt & put in anothery.

I didn't over tighten the little b$^tard - was just starting to tension & then went loose. Removed the socket & viola, broken bloody bolt:rolleyes:

[GTS-t VSPEC]

Micko,

Remember your car is a few years old now, and alot of heat and wear goes though those parts. I'd suggest replacing all the bolts in one hit, then you never have to worry abiout it again.

See'ya:burnout:

[25GTT]

So Rev,

do you think it is the little notches then or the big notches? that are the 2 degree counters?

Oh also are you driving around with the cover off the cam gears? is it safe to do this? what happens if a rock came up and hit it?

[APA]

but seriously what is the chance

of a rock coming up that far and hitting ur cam gear?

i know it's possible but nah!

adrian

[GTS-t VSPEC]

Adrian,

It has happend before, and has bad consequences, having said that I have my cam gear covers off.

See'ya:burnout:

[25GTT]

so in saying this once the new cam gear goes on it's relatively easy to whack the cover back on top no worries... might just take the cover off for special occasions or sumfin....

[GTS-t VSPEC]

You can get perspex ones made for car shows etc, they look really cool, show-off the cam gears without allowing foreign objects in.

See'ya:burnout:

[APA]

troooooo

even if you don't haev cam gears?

is their any point driving with the cover off?

other then to attract rocks?

lol

adrian