Rb 26 Timing Questions

[Styline GTR]

Guys,

Have Just finished painting and re assembling Cam Covers/ Rocker covers ect ect.

Got new CAS collars and Rubber grommet and reinstalled and kicked it over. Started good.

The CAS was put back in original position so bolts in the centre (Took Photos Prior to Disassembly) on all 3.

Thought i would check the timing so went out bought a Timing light.

1st Go : (Disconnected AAC valve or whatever its called under Plenum)

Hooked timing light up to battery and the other end to the 2 Black wires on the First coil/Spark Plug closest to Cam Gears.

Checked the marks on the Balancer and they were no where to be seen! (You Could Just make out the 30 Degree mark!) Probably like sitting 60+ if there was a mark! Turned of!

2nd Go : Loosened CAS and adjusted Clockwise bout half the distance. Getting Closer.

3rd Go : Fully Clockwise and its pretty spot on 20 Deg.

Bit of history. Car had a Timing belt/water pump ect (100K service) end of 2009. SInce that service I've put 75 klm ( yes only that much!) on it over 2 yrs!

Did the mechanic adjust it wrong or cam belt/gears put on wrong or something???

I have Power FC and its saying its at 20 Degrees at idle but prior to change it still said it was 20 so it must just adjust itself?

[Moodles2]

PowerFC assumes 20 degrees, it has no way of confirming (since cam timing is mechanical not electrical) what the base timing currently is set to.

What could have happened was the mechanic wrongly used 15 degrees (RB25s) instead of 20 degrees (RB26s) when setting the cam timing, and made things worse by using the wire loop at the back of the engine with a cheap timing light.

[Styline GTR]

Cheers Mate!

Yeah seemed very odd Just being able to see the 30 Deg Mark Behind the pulley where the CAS was originally Located.

Hope I'm using the correct mark on the Lower Cover Plate! lol!

[SiR_RB]

most accurate way is to put an ignition lead from No1 sparkplug into coilpack 1, and connect ur timing light to that

[Styline GTR]

most accurate way is to put an ignition lead from No1 sparkplug into coilpack 1, and connect ur timing light to that

WIll give that ago when i get to the shops next! cheers Mate!

[The Mafia]

If you have to fully set the CAS to one side to get it even close to the desired base timing, then you have a tooth out somewhere.

I have yet to see anyone put a bloody timing belt on properly these days.

Mechanics don't give a shit, they just slap the belts on, tooth out or not. They don't care, because when you get it back, you pay them and that's all they want. As long as you can drive away, they don't give a shit of the job is done properly or not.

[R.3.2.G.T.R]

there's also thread bout timing light incorrectly hooked up reading double - perhaps the same in your case, try method posted by SiR_RB

[Don Dada]

Hooked timing light up to battery and the other end to the 2 Black wires on the First coil/Spark Plug closest to Cam Gears.

What two black wires are you referring to? There is only one trigger wire per coil.

Try using the loop down to the back of the engine, and if you still get a high reading turn around the pick up of the timing light other way around in the loop. If you are using the trigger wire for no. 1 at the coil, again turn around the pick up of the timing light the other way around if its reading too high.

If all fails, get a ignition lead and put it from coil pack 1 to plug and put the pick up around that.