David Beierl asks, "Big heavy iron thing, right? V timing notch on the
first land and round one on the second."

Yep yep yep. That's the one.

So what we got here then is the later style 1.9 set up for the 90A
alternator with the three-groove crank pulley.

Dennis writes, "The water boxer engine cannot reliably drive a larger
alternator due to the drive belt set. Most belt drives are designed
around the belt having a 180 degree wrap around the drive and driven
pulleys. On the waterboxer the belt only skims around the drive pulley
limiting the amount of friction available to drive the load. This is why
belt tension is so important and from the factory a special high tensile
strength belt was used."

and that, "[...] can that belt squeal when it tries to charge those GC-2
[batteries] you plan to install!"

and Tom Hargrave writes to say that, "[...] the air cooled engines were
also sensitive to belt quality. So sensitive that a cheap belt from your
local McParts store would typically last 4 weeks."

Presently running a 7430 Gates XL belt. Can I do better in terms of
maximizing grippage and reducing slippage?

--
Jack "Rocket j Squirrel" Elliott
1984 Westfalia, auto trans,
Bend, Ore.

On 09/23/2012 11:06 AM, David Beierl wrote:
> At 12:50 PM 9/23/2012, Rocket J Squirrel wrote:
>> Who sells such things?
>
> Scott Daniel, junkyard, Samba.
>
>> Um, this engine has a crank pulley with three separate grooves, each
>> smaller than the one in front of it. Is that what is being described
>> here?
>
> Big heavy iron thing, right? V timing notch on the first land and round
> one on the second. The rust on the unused grooves makes them look smaller.
>
> Yrs,
> d