HKS cam gears

[skyline33]

I got my hands on a set of HKS cam gear, just wondering how to install them??

By the way this is for an RB25det series II R33

I took off the cover but the gear on the left has a metal cover on top of it, while trying to take off the the cover I found that there is a spring underneath, so i just put back together.

So if anyone has done this before it'll be great if you can give some hints. or is best if I get a mechanic to install them??

[GTS-t VSPEC]

Personally I wouldn't do this yourself, you will most likely stuff it up and your timing will be way out. If you have a set then remember that by putting the cam gear on the inlet cam you will loose your NVCS(variable cam timing). This is not a huge issue if you are doing cams at the same time, but I wouldn't bother if you leaving factory cams in.

I would suggest that you simply do the exhaust cam gear, get it done on a dyno, you should get an extra 5kW out with this alone.

See'ya:burnout:

[skyline33]

the exhaust cam gear is the one on the right looking at it yeah??

how come you loose the Variable cam timing??

also is that 5rwkw or flywheel??

[GTS-t VSPEC]

The exhaust cam gear is the one with the CAS(crank angle sensor), should be on the right as you look at the engine. If you read the info on all aftermarket cam gears it says that you will loose the NVCS. I think that they are supposed to be used in conjunction with cams, and when you have more agressive cams then you don't want the NVCS.

See'ya:burnout:

[skyline33]

no worries, I think I'll just change the exhaust cam gear, cause the inlet cam is to complicated to take off (I couldn't figure it out + it was almost midnight when i was looking at it).

thanks mate for the advice.

[400HP]

You can change the cams yourself IF you know what you're doing but I do not recommend tuning them yourself. If you change the timing too much you might easily end up with a blown engine. Tuning of cam gears should only be done on a dyno..

And yeh IN and EX cam gears for HKS are identical and they're also the same as the RB26 cams.

[s15silvia]

I'm no expert, but it is a good idea to use a dyno to setup your cam gears with an expert tuner. They will know exactly how much you need to retard / advance the ignition timing on the exhaust side to produce the optimum power.

[Jay95R33]

Yeah, just do the exhaust gear. The car will run like a dog if you take the VCT off and keep the factory cam.

You can give me the other HKS cam gear if you want

The general consesus on the RB25DET with factory turbo blah blah blah, is to run 4 degrees (crank) retard on the exhaust cam. But it could vary from car to car depending on your mods I suppose.

J

[GTS-t VSPEC]

Optimum is around 4 deg retard for the exhaust cam, if your after top-end power. Remember that top-end isn't every thing, a good tuner can give you a fatter power curve and a bit more top-end, the wider the power curve the more usable power you have.

See'ya:burnout:

[Guest nismogtsx]

I agree...

Go the exhaust side only....

HKS cam gears when tuned properly can give an awsome power curve... Its all about the felling of puttin g the foot down and having a 1 second lag before instant power and then all the way to 8000rpm then a quick stab of the clutch and select 2nd and bang your away... Yeah baby... (I got wet pants now)

[s15silvia]

Yes I totally agree, I have hks cams with a hks turbo and the exhaust cam gear. The optiumum found was 4 deg retarded.

This is a good discussion.

[T0nyGTSt]

Anyone have a price on HKS cam gears?

I assume you need the fancy purple wheel + the camshaft for the exhaust end?

And are rb25 and rb26 ones different?

T.

[s15silvia]

http://members.optushome.com.au/earlejt/camgear.jpg

I purchased one for about $250 bucks in Japan.

[GTS-t VSPEC]

If your after cam gears then HKS ones retail at around $250-$270. There are also a number of other manufactures who have them available, such as Toda and OS Giken, some a little cheaper, others more expensive. They can also be bought through Nengun.

For most people, unless you doing cams, then the exhaust cam is fine, and when tuned properly can give noticable gains in power and torque. I believe that the RB26 and RB25 cam gears are identical.

See'ya:burnout:

[skyline33]

well, i'll be doing only the exhaust cam gear so i'll have one left over so if anyone wants to buy one as the exhaust gear and inlet gear are exactly the same drop me a pm. also the gears are identical for the rb25, rb26 and from memory rb20