S1 belt snubber clearance

[Paul Coleman]

Does anybody know what the clearance needs to be for the belt snubber on an S1? I'm talking about the right angled bracket which is fixed to the inlet cam carrier.

 

The manual talks about an auxiliary pulley snubber having a clearance of 0.4mm +/- 0.1mm but I'm not sure if that's the same thing. I can't adjust mine to give me less than 1.1mm?

 

Thanks, Paul.

[Wilf]

There is another snubber down by the oil pump pulley that can be adjusted to be that close.

[molemot]

Book says inlet snubber for turbo should be 0.50 to 0.75 mm.

Aux. pulley snubber 0.4mm +/- 0.1mm.

[Paul Coleman]

The early S1 didn't have an auxiliary snubber only one on the inlet cam but I can't see anywhere in the manual that tells me what the clearance should be... I wonder if it would be the same as the turbo?

Edited August 30, 2014 by Paul Coleman

[molemot]

Exactly the same function and geometry...so I would think the clearance would be the same. Main things are 1) not so small that it rubs the belt away and 2) close enough that it performs its function and stops the belt slipping...!! So if it works on one 900 series engine, should be good for all of them.

[giorgio67]

Yes but the later HTD belts are a little ticker compared to the trapezoidal belt so gap would be a little different?

 

Giorgio

[molemot]

I was assuming the S1 would have the same trapezoidal belt as my early turbo from 1982....HTD was later than that(!)