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Tomei Cams On A R33 Gtst

AngryRB

By AngryRB,
in Engines & Forced Induction

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AngryRB Grand Master

AngryRB

Posted
Posted

Okay, ive searched and found different answers, and youtube video's shows different too

can someone with tomei cams the 256degree 8.5lift tell me what they are like, im talking idle and just general upto 3000rpm driving, is it a pig that idles crap??

so far i see they are good after 4000rpm , but i just need to know that the off boost low rev driving isnt really bad, cause thats where most of my driving is..

FYI, this will be for a gtx3076 , 18psi , external gate blah blah blah...

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AngryRB Grand Master

AngryRB

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Posted (edited)

they idle almost like stock. youll be fine

ive got a very similar set up

what do you think to this utube segment?

is that close to the idle? i know its 270degrees 8.5lift

ive enjoyed reading your thread, sounds like an awesome result , i hope it makes you shake at the knees a bit, thats what im after with mine, 300rwkw with an adrenaline rush, respect!!

Edited by SliverS2
boostn0199 Grand Master

boostn0199

Posted
Posted

Yeah there pretty similar sound to stock maybe a tad bit more rough and sound abit more like a rb26 up higher revs more deeper note. They are fine to drive off boost it wont feel like a pig but yeah main gains will be through midrange and a little bit up top.

AngryRB Grand Master

AngryRB

Posted
  • Author
Posted

Yeah there pretty similar sound to stock maybe a tad bit more rough and sound abit more like a rb26 up higher revs more deeper note. They are fine to drive off boost it wont feel like a pig but yeah main gains will be through midrange and a little bit up top.

ah cool, thanks for that reply, i dont mind a tad rough idle, just wanted to make sure it would have mostly normal response off boost, my decision is almost made now,

do you think it needs cam gears as well , its says on website that is already pre dialled, should i buy cam gear as well ? and if so , just exhaust or intake too?

any advice is appreciated.

cheers

boostn0199 Grand Master

boostn0199

Posted
Posted

Well definately dont need intake camgear as your retaining vct, I put an exhuast cam gear on mine but my tuner found it made gains on the stock setting so didnt end up changing the position so I didnt end up needing it.

Harey Veteran

Harey

Posted
Posted

From what I have heard very little change to idle, very little loss of low down power but a lot more midrange and some more top end. Most results I have seen are around ~20rwkw peak power but more in the midrange.

How much does it cost to get someone to fit them?

AngryRB Grand Master

AngryRB

Posted
  • Author
Posted

From what I have heard very little change to idle, very little loss of low down power but a lot more midrange and some more top end. Most results I have seen are around ~20rwkw peak power but more in the midrange.

How much does it cost to get someone to fit them?

sounds like a win win modification then, im keen to fit them myself , just have to find some DIY articles and maybe a gregories manual ,

cant be too much different to fitting a normal cam on an RB30?

boostn0199 Grand Master

boostn0199

Posted
Posted

sounds like a win win modification then, im keen to fit them myself , just have to find some DIY articles and maybe a gregories manual ,

cant be too much different to fitting a normal cam on an RB30?

There not that hard to install pretty easy providing your confortable with doing a timing belt you should have no problem. Just follow the workshop manual it has a pretty good step by step only thing I would recoment you do is rotate the crank a few degress backwards from TDC when removing and installing cams then align cam gears followed by crank also would be a good idea to upgrade the valve springs and replace valve seals if your changing cams.

AngryRB Grand Master

AngryRB

Posted
  • Author
Posted

There not that hard to install pretty easy providing your confortable with doing a timing belt you should have no problem. Just follow the workshop manual it has a pretty good step by step only thing I would recoment you do is rotate the crank a few degress backwards from TDC when removing and installing cams then align cam gears followed by crank also would be a good idea to upgrade the valve springs and replace valve seals if your changing cams.

thanks ill do that, dont really want to take the head off to do springs and seals though, sounds like a big job

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