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Rb25det Cam Timing

DRIFTER

By DRIFTER,
in Engines & Forced Induction

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R31Nismoid Grand Master

R31Nismoid

Posted
Posted

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 :P

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 Grand Master

Bass Junky

Posted
Posted

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

DRIFTER Proficient

DRIFTER

Posted
  • Author
Posted
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  :P

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

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 Experienced

Dobz

Posted
Posted

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.

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