Only Two Timing Marks On Pulley?

[owen1r]

Hi guys,

I recently replaced my CAS and when I put it back on and attempted to set up the timing with a timing light, I noticed there were only two marks on the pulley? Which mark is which?

Car is a r34 GT-T

Cheers.

Edited February 21, 2014 by owen1r

[owen1r]

Ok, after leaving it like this for awhile I decided to recheck it getting the car ready for a tune. I've set the motor at TDC according to the markings on the cam gears and this is the result.

Can anyone give me an answer as to what these marks are? My guess is 10 and 20 deg, it would be helpful if someone knew the diametre of the pulley.

Edited July 15, 2014 by owen1r

[iruvyouskyrine]

That's odd. On my Neo harmonic balancer is has 5-6 marks on it, never seen one with just two. RB20 and RB30 also have 5-6 marks.

[owen1r]

I know right.. I looked at stagea pulleys ect and they all have 5/6 marks.

[blind_elk]

There is another mark on the pulley, just above the pointer on the timing case. I'm guessing that that should be TDC. If that's the case, then the engine is slightly out of wack between the crank and the cams.

In any case, the 2 white marks would probably be 15 and 20 BTDC - you really only need 15.

[owen1r]

I'll get a piston stopper and try and find TDC more accurately, the screwdriver down the hole method just isn't accurate enough. For now I have set it to the first white mark, just to be cautious.

Edited July 17, 2014 by owen1r