Timing belt misalignment

[MrToon]

Hi Guys,
I have a very similar problem: 2L head on a 1800 block. The timing belt runs against the back flange on the intake pulley and thus grinds on the protruding part of the head. I've checked that I have an A on the intake and S on the exhaust and aux shaft. The timing belt hangs less than 1 mm over the back edge of the aux shaft and tensioner.

I feel like I have two options: putting a spacer behind the intake pulley or changing the aux pulley to a type with flange on the back side, for instance the current intake pulley. Does anyone have experience with the last option? I could reuse my current pulleys but the timing marks would be off.




Thanks,
Toon

[18Fiatsandcounting]

I would not put spacers on the intake cam pulley. I can't quite tell from your picture, but it looks like the metal lip of the intake pulley is bent towards the rear (towards the engine), more than I'm used to seeing. This metal ring is actually fairly soft, so you could remove the pulley and bend the ring to push it towards the front.

I can't say whether this is a good long term solution, but you might be able to push the guide by about 1 or 2 mm which would likely be enough to keep the belt from rubbing.

-Bryan