Original 12 volt crank pulley diameter??

bajachris88 The international telephone dialing code for Antarctica is 6

6,661 posts · joined Apr 2005 · 4 Nov 2009, 11:12 pm

#745324

I bought this degree sand seal pulley many moons ago, and i suspect its a power pulley, but i have no idea. I can't remember out of the many things i ordered in my parts inventory...

How wide is the stock pulley?
I have a steel 6 volt stock crank pulley, will that be the same diameter as the 12 volt?

It won't fit though with my sand seal, but just something for me to play with none the less.

Thanks guys!
Christopher Leete.

(ô_!_/ô) (ô_!_/ô)
69' baja: kombi box, thing spindles, irs, disc front, type 3 rear drums, 2 inch lift kit, 31x10 rears. 👍
New engine in process: 94mm p&bs, 74mm C/w chomol Crank, 35.5x39 SP heads, turbo. Wierd combo, hopeful torque monsta!

hellbugged 48's and straight cuts

5,080 posts · joined Apr 2003 · 5 Nov 2009, 5:28 am

#745332

bajachris88 wrote:I have a steel 6 volt stock crank pulley, will that be the same diameter as the 12 volt?

yes

bajachris88 The international telephone dialing code for Antarctica is 6

6,661 posts · joined Apr 2005 · 5 Nov 2009, 8:17 am

#745345

awesome! Thanks mate, will measure off that one 👍

(ô_!_/ô) (ô_!_/ô)
69' baja: kombi box, thing spindles, irs, disc front, type 3 rear drums, 2 inch lift kit, 31x10 rears. 👍
New engine in process: 94mm p&bs, 74mm C/w chomol Crank, 35.5x39 SP heads, turbo. Wierd combo, hopeful torque monsta!

68AutoBug Beetle Restorer - Experience over 138\% - YIKES --

11,654 posts · joined Aug 2002 · 5 Nov 2009, 5:44 pm

#745395

Hi Chris...

most sand seals are machined to fit into the case,,,
and use a special pulley...

I see now You can buy a sand seal that fits into the case and a special pulley is again used....

so, NO seal to be used with a VW pulley....

the VW pulley is used with the oil slinger..

cheers

LEE

PS: I don't like or recommend power pulleys... LEE

PSS; many NEW alloy pulleys now need shims to make them fit????

- Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY---

bajachris88 The international telephone dialing code for Antarctica is 6

6,661 posts · joined Apr 2005 · 5 Nov 2009, 7:01 pm

#745414

Thanks Lee!

Yea i got the sand seal that you tap in. Bloody genius!, and sooo easy. i got the proper alloy pulley for it and the shims. 👍 I fitted it without the shims and when torqued up, the crank locked up (eek!) i couldn't turn by hand...

I just wanted to measure up the crank pulley to make sure i didn't grab a sand seal pulley when i bought it ages ago... Cause like you and alot of wise dubbers i have heard, no one seems to approve of them, and rightly so. The vw engineers had it right the first time and don't want to break away from that.

If its a power pulley it can be someone elses problem 😀 👍

(ô_!_/ô) (ô_!_/ô)
69' baja: kombi box, thing spindles, irs, disc front, type 3 rear drums, 2 inch lift kit, 31x10 rears. 👍
New engine in process: 94mm p&bs, 74mm C/w chomol Crank, 35.5x39 SP heads, turbo. Wierd combo, hopeful torque monsta!

Joel Now containing 100\% E-Wang

9,368 posts · joined Feb 2006 · 5 Nov 2009, 9:16 pm

#745464

chris, youll know if its a power pulley
they noticably smaller
bout the same size as the gen pulley

speaking off does anyone know if there were other variatons on stock pulley size?
all my aus 1600 twin port pulleys are the same size but the one of dads engine which is a european 1300 twinport is about 10mm smaller

bajachris88 The international telephone dialing code for Antarctica is 6

6,661 posts · joined Apr 2005 · 5 Nov 2009, 11:05 pm

#745485

Thanks Joel 👍 its certainly not that small.. no way. substancially bigger...

(ô_!_/ô) (ô_!_/ô)
69' baja: kombi box, thing spindles, irs, disc front, type 3 rear drums, 2 inch lift kit, 31x10 rears. 👍
New engine in process: 94mm p&bs, 74mm C/w chomol Crank, 35.5x39 SP heads, turbo. Wierd combo, hopeful torque monsta!

Craig Torrens 6 times Australian, 7 times State Hillclimb Class Champion

8,040 posts · joined Jan 2003 · 6 Nov 2009, 9:20 am

#745549

hellbugged wrote:
bajachris88 wrote:I have a steel 6 volt stock crank pulley, will that be the same diameter as the 12 volt?

yes

NO......a 6 volt pulley is smaller and also has a different offset to a 12 volt pulley.

A 1300 12volt twinport pulley is the same as a 6volt pulley in diameter but has the correct offset (same as a 12v)

I use the 1300 TP pulley on the street as you can rev past 7000rpm without throwing a belt due to the slightly smaller size.

The largest of all pulleys is the 36hp pulley.

Joel Now containing 100\% E-Wang

9,368 posts · joined Feb 2006 · 6 Nov 2009, 12:25 pm

#745602

cheers craig that explains it

chris heres a power pulley on a mates old bug
ok so its not quite as small as a gen pulley but not far off

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