Quote:
Originally Posted by duxthe1
The original design already does this. The idler gear has an oil pressure fed bronze bushing that rides on a spindle that is 32mm od with a 24mm od stub that locates it in the head with a large 10mm thread bolt holding it. Its not likely to go anywhere.
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Are you saying that the OE design is already offset?
If not offset, the original design works fine because any radial load applied to the sprocket just pushes radially on the bolt. If you offset the center hole of the idler, you are now producing a torque that will try to unscrew or tighten the bolt depending on what direction you are turning the bushing for adjustment.
Timing belt engines use this type of setup offset bushing on the slack side ( lower load ) and rotate it so any forces are trying to tighten the bolt not loosen it.
Mock something up with a loose bolt and give it a push by hand and you will see what I mean.