Jump to content
SAU Community

Cam Gears

mitchy_

By mitchy_,
in Western Australia

 Share

Recommended Posts

mitchy_ Grand Master

mitchy_

Posted
Posted

ok, so im looking to get an adjustable cam gear fitted when i take my car to get retuned next week.

now most stories ive heard are people telling me to do the EXHAUST cam gear, and it helps keep the top end power, whereas the INLET does stuff all.

then today i heard form a reputable tuning shop that its better to do the INLET cam gear, as it helps low end power, and the EXHAUST cam gear is less affecting...

soooooo... which one is it? ideally i want a better low end, so adjustable INLET sounds the better option, but what are peoples experiences?

(and unless someone can get me a really good price on both cam gears, dont suggest doing both)

cheers.

Link to comment
https://www.sau.com.au/forums/topic/87514-cam-gears/
Share on other sites
djr81 Grand Master

djr81

Posted
Posted
ok, so im looking to get an adjustable cam gear fitted when i take my car to get retuned next week.

now most stories ive heard are people telling me to do the EXHAUST cam gear, and it helps keep the top end power, whereas the INLET does stuff all.

then today i heard form a reputable tuning shop that its better to do the INLET cam gear, as it helps low end power, and the EXHAUST cam gear is less affecting...

soooooo... which one is it? ideally i want a better low end, so adjustable INLET sounds the better option, but what are peoples experiences?

(and unless someone can get me a really good price on both cam gears, dont suggest doing both)

cheers.

Common wisdom is that you will get a larger gain by retarding the exhaust cam than from advancing the inlet cam. So given the choice, do the exhaust.

However, for the extra $200 ish you may as well do both.

Link to comment
https://www.sau.com.au/forums/topic/87514-cam-gears/#findComment-1580712
Share on other sites
GTS-t VSPEC Grand Master

GTS-t VSPEC

Posted
Posted

If you have an R33 GTS-t, then changing the inlet cam gear is not so simple as it controls the variable cam timing. Therefore most people only change the exhaust cam gear. Some of the guys over east have been working on an adjuster for the stock R33 Inlet cam gear, allowing you to keep the variable cam gear, while allowing some adjustment.

Link to comment
https://www.sau.com.au/forums/topic/87514-cam-gears/#findComment-1581260
Share on other sites
caminperth Grand Master

caminperth

Posted
Posted

Big difference. Loss of low end power. Try it out by unplugging the VCT solenoid plug. It's just above where the top radiator hose goes in.

That said - I haven't seen what an aftermarket inlet cam gear does. It might be all good. All I can add is that I did the exhaust gear and it helped bring boost on a little earlier.

Link to comment
https://www.sau.com.au/forums/topic/87514-cam-gears/#findComment-1582157
Share on other sites
GTS-t VSPEC Grand Master

GTS-t VSPEC

Posted
Posted

Pretty easy to do, but if you get it wrong, then the timing will be out, and could do some damage. Only attempt if you know how to install your own timing belt.

I wouldn't remove the VCT, it's one of the best bits about the RB25's.

To tune the cam gear, allow 1-2hrs of dyno time. With stock cams the benefits are small, more worthwhile if you have a set of aftermarket cams to tune.

Link to comment
https://www.sau.com.au/forums/topic/87514-cam-gears/#findComment-1582661
Share on other sites
mitchy_ Grand Master

mitchy_

Posted
  • Author
Posted
Mitchy, i have a Greddy cam gear for sale if ya interested. Brand spanking, never come within 20m of an engine only a book shelf  :D. $180 if ya interested.

very interested, greddy is the one i wanted.. but they are $175 new from nengun.. any better price? :)

Link to comment
https://www.sau.com.au/forums/topic/87514-cam-gears/#findComment-1584014
Share on other sites
ossie_21 Grand Master

ossie_21

Posted
Posted

I prefer to not do things by halves, and am going to do both at the same time when the time comes. And I'm not too sure on screwing around with the RB25 set up either!!

BTW Mitchy check your pm's!

Link to comment
https://www.sau.com.au/forums/topic/87514-cam-gears/#findComment-1584370
Share on other sites
GTS-t VSPEC Grand Master

GTS-t VSPEC

Posted
Posted
How does VCT go with aftermarket inlet cam? Or would you ditch it? can you ditch it? I imagine it wouldn't function as well as it should..

You can buy cams that are designed to work with the VCT, I have a set of Apex'i GT cams, 270deg 8.9mm lift that work with the VCT.

Link to comment
https://www.sau.com.au/forums/topic/87514-cam-gears/#findComment-1585217
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • sunsetR33
      Blue/grey smoke after idle

      By sunsetR33 · Posted

      Can't you put the pistons to TDC and then do the valve seals? Or will the drop down too far to pull them back up?
    • sunsetR33
      Replacing turbo water line - any recommendations or advice?

      By sunsetR33 · Posted

      One thing I can tell you is, do it properly the first time. If you encounter unexpected problems just let the car sit for a week or two if you have to get some other parts or figure stuff out.  I'd have said go and use as many OEM parts as possible but since you want to change the turbo later on a custom kit is probably the better choice. Since I have no experience with RB25 just compare parts diagrams and images before buying a line kit and it should be easy to see if it has everything you need. Amayama has very good parts diagrams and part number lists, that is what I used a bunch to figure out what I might need. And don't forget to plan ahead and possibly renew other stuff that's easy to get to while you're in there doing the turbo lines. Happy wrenching
    • sunsetR33
      Unpeeling the Orange

      By sunsetR33 · Posted

      Update 4:   Hi all, good news. Engine is running and all the gaskets and seals seem to be working as intended. No leaks so far, even the JB Weld seems to hold. I flushed out the old coolant a few times and put in fresh coolant, not Nissan stuff, I decided to try the Ravenol Protect FL22, they claim it works for a wide variety of JDM cars and the opinions on it by some people were pretty good. And it has the nice poison green color! And man am I glad I bought a coolant system tester earlier this year, vacuum filling works wonders on this engine. I can definitely recommend this to anyone still doing it the old school way. All you need is compressed air supply. Will have to do a small test drive as soon as I can, I removed the gauge cluster again as the tacho needle was still bouncing around a bit but it was much better than before already.  I also found some cracks on all 4 tires inner and outer sidewalls. Apparently these tires should 't be parked on for extended periods or be kept under 0 degrees during storage, which I did not know. Clearly the previous owner didn't look into those details either, he probably bought them just cause they are cool semi-slicks. I'm just wondering how tf I am supposed to reach 30-80 degree tire temperatures on the public road consistenly, these tires were never going to work for my use case. I'll probably order Continental SportContact7 ones as these are the best allround summer tire available right now and I don't think I'll need anything crazier for now. Do let me know if you have experience with various tires and which ones you recommend.
    • sunsetR33
      Unpeeling the Orange

      By sunsetR33 · Posted

      You have no idea how many goddamn boxes I received these past three months haha Most have been put to use by now though, luckily
    • sunsetR33
      Unpeeling the Orange

      By sunsetR33 · Posted

      Not going to pretend I didn't do a bit of junky work this time around, but mostly due to the fact that some things I am not willing to spend days fixing right now, like wiring. I try to do most things properly the first time around.
×
×
  • Create New...