Jump to content
SAU Community

Recommended Posts

I've got a set of Racepace adjustable cam gears from an old motor, that I would like to install into my new engine and they've been dialed in for the previous setup.

My question is whether or not it will be fine to install as per normal? I.E. take stock gears off, bolt adjustable gears on, line up dots on cam gears to timing cover back plate, line up timing pulley to oil pump mark

and install timing belt and idler and tensioner as per usual. Or will installing this way cause me to be a tooth (or more) out / screw up the timing?

Pics to show where the cam gears are currently adjusted to

20120911_153818_zps169c8f8a.jpg

20120911_153829_zpsdb02f743.jpg

I also have the head currently off and taking the stock cam gears off caused a slight ANTI-CLOCKWISE movement. I've been told to check the alignment ONLY from CLOCKWISE rotation.

Would it matter if I just aligned the cam gear timing marks regardless of rotation direction, considering the head is off at the moment?

Finally, I will be heading to the tuner ASAP after I have the car up and running, it will only be light driving to get it rwc'ed, registered and next destination would be the tuner's workshop.

Thanks in advance

Link to comment
https://www.sau.com.au/forums/topic/426490-adjustable-cam-gears/
Share on other sites

Everything is keyed to fit in only one way. If all the marks are lined up on the cams and your crank is lined up then everything will be lined up. If the head is already off just line it up before you slap it back on. I cant really understand what you are trying to say in regard to the clockwise anti clockwise but if you took the belt off and fudged a cam by turning it, you can't turn that cam all the way around to line it up. I'd say it should be fine just to dial it back a couple mm which ever way you need to go. Dont hold me to this but I think its right.

do you have to move everything to TDC and stuff before removing old gears or can you just remove them and line up dots?

You can just remove and replace but if you are at tdc you will know exactly where you are and if something moved you will know exactly where you should be. I really wouldn't do it if you arent at tdc. Think about it if you turn your cam gear even 1 degree how are you going to know?

Head off you can turn the cam freely. Head on just turn it back or forward to the dot not all the way around.

If I was at your place, then I would like to start from zero, as this is required by the engine also. If you don't do this, there cause a problem. Which can be increase with the passage of time. Which can cause cease the engine. Also, when you finished your change then don't forget to fill the new and quality one oil which keeps protection.

Head on or off rotating camshafts individually out of rotational sequence will and can cause inlet valves to touch exhaust valves as they are never open anymore than .100" at the same time in operation. The valve angle allows the valves to clip one another causing the ground seating face of the valve to be damaged

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


  • Similar Content

  • Latest Posts

    • The average previous owner for these cars were basically S-chassis owners in the US. Teenagers or teenager-adjacent. I often tell people that neglect is easier to fix than something that was actively "repaired" by previous owners.
    • Update 3: Hi all It's been a while. Quite a lot of things happened in the meantime, among other things the car is (almost) back together and ready to be started again. Things that I fixed or changed: Full turbo removal, fitting back the OEM turbo oil hardlines. Had to do quite a bit of research and parts shopping to get every last piece that I need and make it work with the GT2860 turbos, but it does work and is not hard to do. Proves that the previous owner(s) just did not want to. While I was there I set the preload for the wastegates to 0,9bar to hopefully make it easier for the tuner to hit the 370hp I need for the legal inspections that will follow later on. Boost can always go up if necessary. Fitted a AN10 line from the catch can to the intake hose to make the catchcan and hopefully the cam covers a slight vacuum to have less restrictive oil returns from the head and not have mud build up as harshly in the lines and catch can. Removed the entire front interior just shy of the dashboard itself to clean up some of the absolutely horrendous wiring, (hopefully) fix the bumpy tacho and put in LED bulbs while I was there. Also put in bulbs where there was none before, like the airbag one. I also used that chance to remove the LED rpm gauge on the steering column, which was also wired in absolute horror show fashion. Moved the 4in1 Prosport gauge from sitting in front of the OEM oil pressure gauge to the center console vents, I used a 3D printed vent piece to hold that gauge there. The HKB steering wheel boss was likely on incorrectly as I sometimes noticed the indicator reset being uneven for left vs. right. In the meantime also installed an airbag delete resistor, as one should. Installed Cube Speed premium short shifter. Feels pretty nice, hope it'll work great too when I actually get to drive. Also put on a fancy Dragon Ball shift knob, cause why not. My buddy was kind enough to weld the rust hole in the back, it was basically rusted through in the lowermost corner of the passenger side trunk area where the wheel arch, trunk panel and rear quarter all meet. Obviously there is still a lot of crustiness in various areas but as long as it's not rusted out I'll just treat and isolate the corrosion and pretend it's not there. Also had to put down a new ground wire for the rear subframe as the original one was BARELY there. Probably a bit controversial depending on who you ask about this... but I ended up just covering the crack in the side of the engine block, the one above the oil feed, with JB Weld. I used a generous amount and roughed up the whole area with a Dremel before, so I hope this will hold the coolant where it should be for the foreseeable future. Did a cam cover gasket job as the half moons were a bit leaky, and there too one could see the people who worked on this car before me were absolute tools. The same half moons were probably used like 3 times without even cleaning the old RTV off. Dremeled out the inside of the flange where the turbine housing mates onto the exhaust manifolds so the diameter matches, as the OEM exhaust manifolds are even narrower than the turbine housings as we all know. Even if this doesn't do much, I had them out anyways, so can't harm. Ideally one would port-match both the turbo and the manifold to the gasket size but I really didn't feel up to disassembling the turbine housings. Wrapped turbo outlet dumps in heat wrap band. Will do the frontpipe again as well as now the oil leak which promted me to tear apart half the engine in the first place is hopefully fixed. Fitted an ATI super damper to get rid of the worn old harmonic balancer. Surely one of the easiest and most worth to do mods. But torquing that ARP bolt to spec was a bitch without being able to lock the flywheel. Did some minor adjustments in the ECU tables to change some things I didn't like, like the launch control that was ALWAYS active. Treated rusty spots and surface corrosion on places I could get to and on many spots under the car, not pretty or ideal but good enough for now. Removed the N1 rear spats and the carbon surrounding for the tailpipe to put them back on with new adhesive as the old one was lifting in many spots, not pretty. Took out the passenger rear lamp housing... what do you know. Amateur work screwed me again here as they were glued in hard and removing it took a lot of force, so I broke one of the housing bolts off. And when removing the adhesive from the chassis the paint came right off too. Thankfully all the damaged area won't be visible later, but whoever did the very limited bodywork on this car needs to have their limbs chopped off piece by piece.   Quite a list if I do say so myself, but a lot of time was spent just discovering new shit that is wrong with the car and finding a solution or parts to fix it. My last problem that I now have the headache of dealing with is that the exhaust studs on the turbo outlets are M10x1.25 threaded, but the previous owner already put on regular M10 nuts so the threads are... weird. I only found this out the hard way. So now I will just try if I can in any way fit the front pipe regardless, if not I'll have to redo the studs with the turbos installed. Lesson learned for the future: Redo ALL studs you put your hands on, especially if they are old and the previous owners were inept maniacs. Thanks for reading if you did, will update when the engine runs again. Hope nothing breaks or leaks and I can do a test drive.
    • No those pads are DBA too  but they have colors too. I look at the and imo the green "street" are the best.
    • I’m not sure what happened I told them about sonic tunes free OTS tune and the next the I know .. I was booted..   To funny 
×
×
  • Create New...