Re: Custom Pistons - relocation of gudgeon or wrist pin & choice ofmanufactu...

[Huw Powell <audi@mediaone.net>]

> However, "eyeballing" it, if its just the idler on the engine I see where
> I'd be able to get 1.25" of additional play in the belt.  If your suggesting
> the part I'm thinking of, its only @ 2.4" in diameter to begin with.  I
> don't know that it alone could be reduced in size enough to provide the
> required adjustment.

I included resize to be "complete"... btw I have no clue as to the
viability of this idea or what any of you are trying to acheive (!) but
it occurred to me that if you wanted more timing belt length the idler
would be the pace to get it.  Of course, its mounting bolt is one of the
oil pump bolts, I don't know if it could be moved far enough so as to
leave the oil pump unmolested.

Just an idea...

> 
> Wouldn't I have to also change the size of one or more of the pulleys?

I don't think so.  But making them both smaller would get you some belt
length (gotta maintain that 2:1 ratio though!) - but the pulley diameter
might very well be an engineered minimum already.

> 
> >  As far as the taller block, I haven't been able to
> > figure out how to get a timing belt that's going to work - the stock belt
> > is, so I'm informed a 1208mm - I'd need a belt about 1.25in, or 31mm
> longer
> > with the right width, 19.1mm and "teeth."
> 
> or relocate or resize the idler?

-- 
Huw Powell

http://www.humanspeakers.com/audi/