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Adjustable Cam Gears

m0rt

By m0rt,
in Engines & Forced Induction

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m0rt Enthusiast

m0rt

Posted
Posted

Hey, i'm lookin at doin my timing belt soon and was thinkin bout doin the cam gears as well, but know s**t all bout them. Just wonderin is there any advantage to havin them on or not, and what the difference is between the intake and exhaust one, since most companys have different part numbers for them. I've found some on ebay but dunno wether to go ahead and buy em or not, manly coz of reasons above

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tridentt150v Grand Master

tridentt150v

Posted
Posted

Dude............do a search, heaps of help here.

The value of adjustable cam pulleys/gears and what you get out of them depends on your supporting mods.

I'd also say that you won't need one for the inlet side unless you have removed your variable valve timing.

My advice - don't bother unless you have/intend to get supporting mods. Buy a reputable brand, avoid eBay.

Go to group buys or search on 'Slide' on SAU, you won't get a better deal from either option.

Munna1 Proficient

Munna1

Posted
Posted

Have a look in the group buy mate you can get one for $90 delivered. This is what I did when I got my belt changed, only gained 5kw but for $90 thats not to bad. You only need one for the exhaust side as the intake uses NVCS. Have a look at the link below for more info on NVCS.

cheers

http://nissanskyline.6te.net/NVCS.htm

m0rt Enthusiast

m0rt

Posted
  • Author
Posted
Dude............do a search, heaps of help here.

The value of adjustable cam pulleys/gears and what you get out of them depends on your supporting mods.

I'd also say that you won't need one for the inlet side unless you have removed your variable valve timing.

My advice - don't bother unless you have/intend to get supporting mods. Buy a reputable brand, avoid eBay.

Go to group buys or search on 'Slide' on SAU, you won't get a better deal from either option.

What kinda mods are we talkin here?? I've still got the car pretty stock, however lookin at throwin money at her later in the year. :yes:

siddr20 Grand Master

siddr20

Posted
Posted

Since you got an r33, you will only need exhaust side of it..

Supporting mods?? hmm i dont know what the other guy was talking about..

hmm to make most use of it after installation of the cam gear and tuning the gear itself is an aftermarket ecu.

With all the other usual mods.. Full exhaust, fmic, pod ..

I have seen gains from 5-10kw.. cheap power!!

tridentt150v Grand Master

tridentt150v

Posted
Posted
Supporting mods?? hmm i dont know what the other guy was talking about..

What I mean is if you just buy a cam gear and slap it on, you might see 5kw.

If you have say a power fc and you install a cam gear you might see 10kw.

If you have a fmic, a bigger turbo, a power fc, zorst etc etc then you might see 15kw.

A cam pulley moves the cam timing, then it all depends on how much better your motor can breath, how much air can be forced into it, to make use of the move in timing.

Re-read the post............

johnbela Explorer

johnbela

Posted
Posted

I got adjustable cam gear put on my r33 and my tuner told me that he didn't tune it because there is will no power difference. My current mods are full xhaust, cooler, pump, safc, pod with heat shield and hks evc. does that sound right?

BAMR33 Mentor

BAMR33

Posted
Posted

Quote Hot4's tech handbook:

'Where the turbo engine will gain most from cam gears is by retarding the exhaust cam shaft. Normally manafactures like to advance the cam more than optimum for peak power because their highly restictive exhaust manifolds and systems can force hot gases back into the cylinder, promoting detonation.

Start retarding the exhaust cam a couple degrees at a time and watch the power climb, particularly if the engine has a larger exhaust housing on the turbo or an extremely low-restriction exhaust system.'

I found this quite interesting, and has lead me to buy one soon for when I get slide max oversize turbo tuned properly.

tridentt150v Grand Master

tridentt150v

Posted
Posted

I have a tomei cam pulley, used it at 5 degrees and got good power, I've still got it on, but had to reset it to 0 degrees for my poncams.

On a ECR33 Gtst with poncams, you usually don't need an adjustable cam gear.

Faid Collaborator

Faid

Posted
Posted

I use the pon cams on my GTR with adjustable cam pulleys. i have a fully modified head ported and polished, 0.5mm oversize valves the works, and with my gears set at 0 deg the car hits full boost at 4900 rpm, with tweaking of the gears and fiddling with the pfc, inj and ign timing the car would hit the full boost at 4600 rpm. so they are worth the hassle if you want to gain smth extra, these things are realy the bang for the buck,.

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