Adjustable Cam Gear

[taxii88]

Hay guys, im just about to get my first 25 an dont no heaps about them.. so wat im wanting to no is, r adjustable cam gears worth using on stock cams/motor??

[The Dan]

Nope

[Mitcho_7]

Definently not the intake gear.

There's some argument for an adjustable exhaust cam gear with aftermarket cams on an rb25, but on the stock stuff they won't do much

Edited August 28, 2012 by Mitcho_7

[taxii88]

Ok cheers guy, so all in all if i wanna do cam gears im gonna have to do cams right??

[kitto]

Some people still fit an adjustable cam gear to the factory exhaust cam.

My RB26 had just an adjustable cam gear on the factory exhaust cam from Japan.

I'll be fitting one on the exhaust cam of my NEO. I'm using factory cams for the time being with the notion of changing to after market cams down the track. I'll get my tuner to play around with the exhaust cam timing. If it so happens to be an advantage then awesome. If not then it will come in handy later on.

[MrStabby]

My RB26 had just an adjustable cam gear on the factory exhaust cam from Japan.

Not a good comparison. 26s typically respond well to cam gears, 25s typically do not.

[34GeeTeeTee]

Some people still fit an adjustable cam gear to the factory exhaust cam.

My RB26 had just an adjustable cam gear on the factory exhaust cam from Japan.

I'll be fitting one on the exhaust cam of my NEO. I'm using factory cams for the time being with the notion of changing to after market cams down the track. I'll get my tuner to play around with the exhaust cam timing. If it so happens to be an advantage then awesome. If not then it will come in handy later on.

My NEO has the exhaust cam gear and poncams, was adjusted slightly i think!

[The Dan]

RB26 and Neo don't count. They respond better to an exhaust gear. Others do not

[kitto]

RB26 and Neo don't count. They respond better to an exhaust gear. Others do not

Well good for me then

The cam gear might come in use seeing as the head has had a fair amount of port work.

[KiwiRS4T]

Certainly shouldn't be on the top of your list - especially not with a stock motor - and nor should cams be near the top.

When you have done the full exhaust, fullflow air filter, fmic, bigger injectors, Z32afm, new fuel pump, better turbo, upgraded ecu you may find that with an adjustable exhaust gear only you can shift some of your top end power to the midrange.

[taxii88]

So obviously a no go on a stock 25.. thanks guys thats all i needed to no.

Edited August 28, 2012 by taxii88

[boostn0199]

No need for it, I ended up putting a exhuast cam gear on mine when I did cams and I got the best results on the standard setting.

[kitto]

While we're on the topic...

Do you guys loctite the adjusting screws after you've done a change?

[KiwiRS4T]

When I had the RB25DET on about 250awkw I had mine dynoed and best result was about 3.5 deg ret from memory and it gained about 8 kw at about 3500 -4000 and a few off the top. And no didn't loctite the set screws - someone posted that they were the weak point on cheap cam gears so I went to the engineering supplies and they said they were already good quality high tensile (had the standard stamped on them) so I just did them up tight with the hex key and they never moved. No reason not to loctite I suppose once you're happy with the tune.

[3BEPKA]

Hi guys,

I'm looking to get my car tunned on e85 in coming weeks and was thinking about putting adj. cam gear on ex side. Its for built 25 with tomei 256/8.5 poncams, 35R .86 etc. It's been making 470-480 whp @1.6 bar for few years and makes full boost by 4500rpm

How much gain can I expect from playing with cam gear if any?

Cheers

G.

Edited August 28, 2012 by 3BEPKA

[Chris32]

Any definative answer on a Exhaust cam gear for a RB25 NEO? I've got the 100k service coming up and want to know if its worth popping one on.

Still stock turbo, but will upgrade later on down the track. If its only a few KW I don't think I'll bother

[GTSBoy]

It can only ever be a few kW when you're only making a few kW to start with.

[34GeeTeeTee]

Any definative answer on a Exhaust cam gear for a RB25 NEO? I've got the 100k service coming up and want to know if its worth popping one on.

Still stock turbo, but will upgrade later on down the track. If its only a few KW I don't think I'll bother

In this case, dont bother

[Chris32]

Is it worth popping one on though for later on down the track with a bigger turbo/injectors?

I've read pages of old threads today and everyone has a differant opinion, most of which seems to suggest the standard NEO cams do a pretty good job without adjustment.

What gains or lack of did you guys experience?

[34GeeTeeTee]

Is it worth popping one on though for later on down the track with a bigger turbo/injectors?

I've read pages of old threads today and everyone has a differant opinion, most of which seems to suggest the standard NEO cams do a pretty good job without adjustment.

What gains or lack of did you guys experience?

I run poncams so the the adjustable gear sits at 0 and does bugger all.