Rb25det Cam Timing

[DRIFTER]

changing the timing belt on my car tomorrow, i've got an os giken adjustable gear for my exhaust cam. does anyone know what the best setting for it would be with just an exhaust, safc and 12 psi boost

[R31Nismoid]

nothing.

i think its been proven a few times now that a cam gear on a 25 does...

nothing

[paulr33]

i had an exhaust cam gear fitted that kept the vct solenoid and i gained 0rwkw hehe just 3 hours of f**king around with getting it done

[DRIFTER]

i saw a post from sk a while ago and he said 4 degrees but i can't remember if it was advance or retard

[r33_racer]

4 degrees retard...will reduce lag alittle i think...helps flow more gas/fuel but wont increase power.

[DRIFTER]

finally found a thread in the stagea section,i'll start with 4 degrees retard and go from there.

any chance i could ask you to not reply to my threads r31nismoid?

[SLY33]

lol, no one can stop you from asking

[R31Nismoid]

ummm. no.

Everyone else here reads this forum too.

Based on what ive seen or done myself, ill pass comment on it if i know a bit.

There have been a number of people (on this very forum if you read most threads) that have tried this to get next to no gain.

So is that money justifiably spent? Not really.

Funny you found a thread in another section... heaven forbid should it have involved the search button

If your bitter about the RB20 head on a 30 bottom end. Thats your problem.

Dunno how many people in that thread told you its a waste of time how many diffferent ways?

dont bother posting if your going to whinge at the responses

[Bass Junky]

The Exh Cam gear on the Neo Engine did absolutely nothing. Cost me $600 worth of fitting and dyno time, and did nothing.

On the non Neo, apparently it can give 5rwkw through the midrange and a little bit up top too, but it's probably not worth the effort.

The cost and effort required to pick up 5rwkw isn't really justifiable.

IMHO

BASS OUT

[wolverine]

exhaust cam gear on an RB25DET series 2 (not neo) gained +10kw with gains from the early-mid range to top end and is completely worthwhile if you are changing timing belt. mine was set near enough to 4deg retard.

[DRIFTER]

ummm.  no.

Everyone else here reads this forum too.

Based on what ive seen or done myself, ill pass comment on it if i know a bit.

There have been a number of people (on this very forum if you read most threads) that have tried this to get next to no gain.

So is that money justifiably spent?  Not really.

Funny you found a thread in another section... heaven forbid should it have involved the search button 

If your bitter about the RB20 head on a 30 bottom end. Thats your problem.

Dunno how many people in that thread told you its a waste of time how many diffferent ways?

dont bother posting if your going to whinge at the responses

<{POST_SNAPBACK}>

i'm not bitter about anything, i just think your an arogant, ignorant, idiot on a moderator power trip. i havn't had a problem with anybodies replies bar yours.

anyway, fitted it all up today, seems to pull alot harder. i'll try to do do 0 degrees and 4 degrees consecutive runs when i get on the dyno, should be in the next few weeks. anyone know where i can get an safc2 for a good price

[Dobz]

All you're doing when you retard the exh. timing is creating a bit more exaust pressure through the turbo hence the quicker spooling and improved mid-range torque, on the neo engine it will do squat!

The only problem with that is if you retard it too much you go backwards in power because the engine is working against itself trying to push exh. gas through an unopened valve.

You only really need adjustable cam pulleys when you get aftermarket cams that have a lot more duration than standard so you can finely tune the characteristics of the power band to get the most out of it.

[R31Nismoid]

lol... so amusing