which way to advance cams

[allrice4g63]

I put a dohc head on a 4g64 bottom end and if you use the stock gears you have to advance each a half a tooth. Which way would be advanced? Would it be with the exhaust mark a half a tooth above the intake or would it be the intake mark half a tooth above the exhaust?

 

[sawnuoff]

The dowel pins on the cams always will be straight up when in time with stock gears. Realy need adjustables.

 

[allrice4g63]

not on a 2.4 4g64.. the 4g64 is 6mm higher than the 63 thus is why you have to advance timing

 

[crash89]

Clockwise is advancing. But I dont think I would even attemp that! Good luck man and be careful!

 

[Stapl3]

and if you use the stock gears you have to advance each a half a tooth

I don't understand this. The only adjustment you can do with stock gears is one tooth at a time. If they need to be advanced half a tooth, then you need adjustable gears.

 

[allrice4g63]

the 4g64 dohc timing belt is 154 teeth the 4g63 dohc is 153 teeth with that extra tooth when looking at the cams on the timing belt side the exhaust cam goes above the intake cam a half a tooth thus causing the intake cam to move down half a tooth thats how you have to time it for it to run good trust me it took me 3 weeks and i finally got it right.

 

[ramsack]

A half tooth at the cams would be a full tooth at the crank sprocket.

 

[allrice4g63]

yes one full tooth at the crank 4g64 timing belt is 154 teeth 4g63 is 153 teeth...... thats why you have to advance the gears a half a tooth each to time it right.