Jump to content
SAU Community

Exhaust Cam Gear

bilbo117

By bilbo117,
in Engines & Forced Induction

 Share

Recommended Posts

bilbo117 Rising Star

bilbo117

Posted
Posted

Hi guys,

I looked up an old adjustable cam gear thread but couldnt find any information about the compatabilitys with the standard ECU.

Going by the post everyone got the best results on the RB25 with about 3 degrees advance?

Is this ok, and will I see any benefit on a Standard ECU? is it safe etc?

Thanks guys,

Bill

Link to comment
https://www.sau.com.au/forums/topic/216356-exhaust-cam-gear/
Share on other sites
rev210 Grand Master

rev210

Posted
Posted
Hi guys,

I looked up an old adjustable cam gear thread but couldnt find any information about the compatabilitys with the standard ECU.

Going by the post everyone got the best results on the RB25 with about 3 degrees advance?

Is this ok, and will I see any benefit on a Standard ECU? is it safe etc?

Thanks guys,

Bill

Bill,

thats 4 degrees retarded on an R33 exhaust cam.

The standard ecu is ok, there is gain to be had.

DECIM8 Grand Master

DECIM8

Posted
Posted

Is it ok just to enhance the cam gear for the exhaust half of the engine as its often the most restrictive? I dont want to bother mucking around installing a intake cam gear, Ive heard custom works need to be done most of the time to fit new gears??

I doing the timing belt before I wack on the turbos and shit so thought it would be worth while??

DECIM8 Grand Master

DECIM8

Posted
Posted

Ive also heard that there is no increase for a r34 NEO ENGINE but I doubt that can be correct, its obvious fact cars are made to beand quiet and prevent detonation with the stock exhaust for regular users. We all change this with big exhausts and so on, so I doubt this can be true. To make it quiet there has to be some restriction and cam gears are an obvious choice.

I for some reason remember DAN666 coming up with this result, I also remember him trying to figure out why his car was not pushing to his target powermark i.e restricted.

Ill give it a go with a cheepy JJR cam gear and she how she fairs, cant give no result, at least it will look hot lol

wolverine Grand Master

wolverine

Posted
Posted (edited)
Ive also heard that there is no increase for a r34 NEO ENGINE but I doubt that can be correct, its obvious fact cars are made to beand quiet and prevent detonation with the stock exhaust for regular users. We all change this with big exhausts and so on, so I doubt this can be true. To make it quiet there has to be some restriction and cam gears are an obvious choice.

I for some reason remember DAN666 coming up with this result, I also remember him trying to figure out why his car was not pushing to his target powermark i.e restricted.

Ill give it a go with a cheepy JJR cam gear and she how she fairs, cant give no result, at least it will look hot lol

hi decimate

my R33 certainly made some gains mid and top end at or around 4deg retarded. (seems worthwhile changing to an adjustable exh. cam gear if you are replacing the timing belt since you are already in there)

the neo powered stagea only lost power up top. if you are trying to move the curve around they will do something but if you are looking to make more top end i suspect you will spend money better saved towards cams.

Edited by wolverine
benm Grand Master

benm

Posted
Posted (edited)

The thread you found was probably the 1 I posted up a couple of years ago from my old '95 R33 GTS-t.

Here is the dyno sheet I posted in that thread:

post-1296-1209289434_thumb.jpg

It cost me about $250 supplied and fitted (back when the yen was about 70) and was the best money I ever spent on the car (altho it was basically stock haha). The extra midrange was noticable as soon as I drove out of the workshop and it felt so much different to drive.

Edited by benm
Sheng Grand Master

Sheng

Posted
Posted
I've read 10-15kw max power increase. I'd only do it after the main restrictions are removed (intake/exhaust/boost) or when doing the timing belt.

Let us know if you end up doing it :thumbsup:

CRD manage to squeeze an extra 8kw out of mine with just exhaust cam + new belt :D

  • 6 months later...
SiR_RB Grand Master

SiR_RB

Posted
Posted

im thinking of getting an adjustable cam gear (exhaust) ive got all stage one mods done (full 3" xhaust, pod + CAI, front mount, heavy duty clutch, boost controller @ 10psi)

gonna get a safc soon, will a cam gear be worthwhile?

whats the average cost to get one fitted?

cheers

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

    • Dose Pipe Sutututu
      From Japan and back to Europe, my sh*tbox R34 GTT

      By Dose Pipe Sutututu · Posted

      Welcome back brother 
    • GoHashiriya
      From Japan and back to Europe, my sh*tbox R34 GTT

      By GoHashiriya · Posted

      I got back to Japan in January and was keen to get back on track as quickly as possible. Europe is god-awful for track accessibility (by comparison), so I picked up a first-gen GT86 in December just to have something I could jump into right away. The Skyline came over in a container this time and landed in early January. It was a bit battered after Europe, though—I refused to do anything beyond essential upkeep while it was over there. The clutch master cylinder gave out, and so did the power steering. I didn’t even bother changing the oil; it was the same stuff that went in just before I left Japan the first time. Naughty. Power steering parts would’ve cost double with shipping and taxes, so knowing I’d be heading back to Japan, I just postponed it and powered through the arm workout. It took a solid three months to get the car back on the road. Registration was a nightmare this time around. There were a bunch of BS fees to navigate, and sourcing parts was a headache. I needed stock seats for shaken, mistakenly blew 34k JPY on some ENR34 seats—which, of course, didn’t fit—then ended up having the car’s technical sheet amended to register it as a two-seater with the Brides. Then there’s the GT86. Amazing car. Does everything I want it to do. Parts are cheap, easy to find, and I don’t care what anyone says—it’s super rewarding to drive. I’ve done a few basic mods: diff ratio, coilovers, discs, pads, seat, etc. It already had a new exhaust manifold and the 180kph limiter removed, so I assume it’s running some kind of map. I’ve just been thrashing it at the track non-stop—mostly Fuji Speedway now, since I need something with higher speed after all that autobahn time. The wheels on the R34 always pissed me off—too big, and it was a nightmare getting tires to fit properly under the arches. So I threw in the towel and bought something that fits better. Looks way cleaner too (at least to me)—less hotboy, less attention-seeking. Still an R34, though. Now for future plans. There are a few things still outstanding with the car. First up, the rear subframe needs an overhaul—that’s priority one. Next, I need to figure out an engine rebuild plan. No timeline yet, but I want to keep it economical—not cutting corners, just not throwing tens of thousands at a mechanic I can barely communicate with. And finally, paint. Plus a bit of tidying up here and there.  
    • The Bogan
      NC MX5

      By The Bogan · Posted

      Nope, needed to clearance under the bar a little with a heat gun, a 1/2" extension as the "clearancer", and big hammer, I was aware of this from the onset, they fit a 2.0 with this intake no problems, but, the 2.5 is around 15mm taller than a 2.0, so "clearancing" was required  It "just" touched when test fitting, now, I have about 10mm of clearance  You cannot see where it was done, and so far, there's no contact when giving it the beans Happy days
    • GoHashiriya
      From Japan and back to Europe, my sh*tbox R34 GTT

      By GoHashiriya · Posted

      It's been a while since I've updated this thread. The last year (and some) has been very hectic. In the second-half of 2024 I took the R34 on a trip through Germany, Italy, France and Switzerland - it was f*cking great. I got a little annoyed with the attention the car was getting around Europe and really didn't drive it that much. I could barely work on the car since I was living in an inner-city apartment (with underground parking). During the trip, the car lost power steering in France - split hose - and I ended up driving around 4,000kms with no power steering.  There were a few Nurburgring trips here and there, but in total the R34 amassed just shy of 7,000kms on European roads. Long story short, I broke up with the reason I was transferred to Europe for and requested to be moved back to Japan. The E90, loved it. It was a sunk cost of around EUR 10,000 and I sold it to a friend for EUR 1,500 just to get rid of it quickly. Trust me, moving countries f*cking sucks and I could not be bothered to be as methodical as I was the first time around.
    • MBS206
      NC MX5

      By MBS206 · Posted

      I assume clearances were all a-okay?
×
×
  • Create New...