Hello! Log in or Register   |  Help  |  Donate  |  Buy Shirts See all banner ads | Advertise on TheSamba.com  
TheSamba.com
 
Reproduction OT Pulley's
Page: Previous  1, 2, 3, 4, 5, 6, 7, 8  Next
Forum Index -> Vintage Speed Share: Facebook Twitter
Reply to topic
Print View
Quick sort: Show newest posts on top | Show oldest posts on top View previous topic :: View next topic  
Author Message
grailoc
Samba Member


Joined: March 25, 2004
Posts: 1433
Location: FRANCE and now QUEBEC city
grailoc is offline 

PostPosted: Tue Nov 29, 2016 3:03 pm    Post subject: Re: Reproduction OT Pulley's Reply with quote

johnny d wrote:
grailoc wrote:
johnny d wrote:
Hi Gents,
did someone actually use those ISP OT Pulleys?

if so, can someone tell me if these work or not?

I have one but still have not the chance to get the engine running, and i know wondering about the measures of the rear. All OG VW-Pullys are 49,90mm,


Just measured my OG pulley and had 49.9mm exactly.


your OG OT Pulley or OG VW Pulley?


OG VW Pulley Smile
I got the same measurement what you had on the picture above
_________________
My 59 low light ghia: https://www.thesamba.com/vw/forum/viewtopic.php?t=452128
My 56 beetle convertible: http://www.thesamba.com/vw/forum/viewtopic.php?p=7796259
My 60 SO23 westy: http://www.thesamba.com/vw/forum/viewtopic.php?t=341539
My oldspeed 36hp autotechnik express build: https://www.thesamba.com/vw/forum/viewtopic.php?t=670827
My garage build: http://www.garagejournal.com/forum/showthread.php?t=199438
Back to top
View user's profile Send private message Visit poster's website Facebook Gallery Classifieds Feedback
rtroy
Samba Member


Joined: June 03, 2009
Posts: 259
Location: California
rtroy is offline 

PostPosted: Tue Nov 29, 2016 7:39 pm    Post subject: Re: Reproduction OT Pulley's Reply with quote

johnny d wrote:
grailoc wrote:
johnny d wrote:
Hi Gents,
did someone actually use those ISP OT Pulleys?

if so, can someone tell me if these work or not?

I have one but still have not the chance to get the engine running, and i know wondering about the measures of the rear. All OG VW-Pullys are 49,90mm,


Just measured my OG pulley and had 49.9mm exactly.


your OG OT Pulley or OG VW Pulley?


I find that a curious and somewhat uninformed question! (No offense intended - few of us have direct experience with these, I guess.)

...From the first days of Porsche, they used the same crankshaft bore as VW, and every aspect of the crankshaft bore, including both the pulley end and the flywheel end, were identical for both companies engines. They remained the same until the advent of the three-piece crankcase for Porsche when Porsche bumped up the bore by a quarter millimeter, presumably to prevent the use of the VW bearing in their new case instead of the new bronze backed bearings introduced at the same time. (That didn't entirely work, though, because some aftermarket companies made a VW style bearing in the Porsche size! This means that you COULD have align-bored your VW to one quarter mm oversize and run EITHER a standard Porsche bearing OR an aftermarket bearing and I have seen many cases, both VW and Porsche, that had this done to them...

So, what I'm saying is; they're the same.

I also went and just measured two of my four "OG" OT pulleys - the two that aren't presently mounted on an engine! - and they were 49.92 and 49.91mm, respectively.

The pulley bore in the case, by the way, starts at EXACTLY the same bore size as the #4 main bearing's outside diameter because the two bores are cut by the same cutter at the same time. (IE: the pulley bore is nominally 50mm.)

If the ISP West product is indeed 49.3 as the image shows, they would likely leak, I would think (!!) and they should in any event fix this manufacturing oversight.

Now, they ARE aluminum and aluminum has a different coefficient of expansion than steel (or maybe they're iron?) does, so they might need to be a tiny bit smaller to ensure they don't rub when hot, but I seriously doubt that they need 0.6mm for that! ...That's 0.3 per side, of course, but still...
_________________
Richard

Karmann Ghia and Porsche 356 enthusiast
Founder, The Karmann Ghia Club of N. America
Back to top
View user's profile Send private message Send e-mail Gallery Classifieds Feedback
pig-pen
Samba Member


Joined: December 04, 2012
Posts: 570
Location: United Kingdom
pig-pen is offline 

PostPosted: Wed Nov 30, 2016 5:19 am    Post subject: Re: Reproduction OT Pulley's Reply with quote

so....

Does anyone else have an iSP pulley to measure.??? I was about to buy one but now I am not so sure...
_________________
1954 L227 Type 113
1964 L31 Type 265
Back to top
View user's profile Send private message Gallery Classifieds Feedback
johnny d
Samba Member


Joined: March 22, 2004
Posts: 2204
Location: where it all came from. ;)
johnny d is offline 

PostPosted: Thu Dec 01, 2016 3:04 pm    Post subject: Re: Reproduction OT Pulley's Reply with quote

rtroy wrote:
johnny d wrote:
grailoc wrote:
johnny d wrote:
Hi Gents,
did someone actually use those ISP OT Pulleys?

if so, can someone tell me if these work or not?

I have one but still have not the chance to get the engine running, and i know wondering about the measures of the rear. All OG VW-Pullys are 49,90mm,


Just measured my OG pulley and had 49.9mm exactly.


your OG OT Pulley or OG VW Pulley?


I find that a curious and somewhat uninformed question! (No offense intended - few of us have direct experience with these, I guess.)

...From the first days of Porsche, they used the same crankshaft bore as VW, and every aspect of the crankshaft bore, including both the pulley end and the flywheel end, were identical for both companies engines. They remained the same until the advent of the three-piece crankcase for Porsche when Porsche bumped up the bore by a quarter millimeter, presumably to prevent the use of the VW bearing in their new case instead of the new bronze backed bearings introduced at the same time. (That didn't entirely work, though, because some aftermarket companies made a VW style bearing in the Porsche size! This means that you COULD have align-bored your VW to one quarter mm oversize and run EITHER a standard Porsche bearing OR an aftermarket bearing and I have seen many cases, both VW and Porsche, that had this done to them...

So, what I'm saying is; they're the same.

I also went and just measured two of my four "OG" OT pulleys - the two that aren't presently mounted on an engine! - and they were 49.92 and 49.91mm, respectively.

The pulley bore in the case, by the way, starts at EXACTLY the same bore size as the #4 main bearing's outside diameter because the two bores are cut by the same cutter at the same time. (IE: the pulley bore is nominally 50mm.)

If the ISP West product is indeed 49.3 as the image shows, they would likely leak, I would think (!!) and they should in any event fix this manufacturing oversight.

Now, they ARE aluminum and aluminum has a different coefficient of expansion than steel (or maybe they're iron?) does, so they might need to be a tiny bit smaller to ensure they don't rub when hot, but I seriously doubt that they need 0.6mm for that! ...That's 0.3 per side, of course, but still...

thats what isp wrote me back:
Hi,

It is a very small difference and it will not cause an oil leak.

Thank you,
Alex Pegado
ISP West
310 637 2100

_________________
GermanRestoKommando
&
Der Barndoor Führers - Slamm Society
&
VWKernzentrale since 2007
Back to top
View user's profile Send private message Visit poster's website Gallery Classifieds Feedback
grailoc
Samba Member


Joined: March 25, 2004
Posts: 1433
Location: FRANCE and now QUEBEC city
grailoc is offline 

PostPosted: Fri Dec 02, 2016 10:06 am    Post subject: Re: Reproduction OT Pulley's Reply with quote

I think if there is not positive pressure into the engine case then there should not be any issue with pulley oil leak.

A breathing box might help preventing this.
_________________
My 59 low light ghia: https://www.thesamba.com/vw/forum/viewtopic.php?t=452128
My 56 beetle convertible: http://www.thesamba.com/vw/forum/viewtopic.php?p=7796259
My 60 SO23 westy: http://www.thesamba.com/vw/forum/viewtopic.php?t=341539
My oldspeed 36hp autotechnik express build: https://www.thesamba.com/vw/forum/viewtopic.php?t=670827
My garage build: http://www.garagejournal.com/forum/showthread.php?t=199438
Back to top
View user's profile Send private message Visit poster's website Facebook Gallery Classifieds Feedback
EVfun
Samba Member


Joined: April 01, 2012
Posts: 5446
Location: Seattle
EVfun is offline 

PostPosted: Fri Dec 02, 2016 10:12 pm    Post subject: Re: Reproduction OT Pulley's Reply with quote

johnny d wrote:
rtroy wrote:
johnny d wrote:
grailoc wrote:
johnny d wrote:
Hi Gents,
did someone actually use those ISP OT Pulleys?

if so, can someone tell me if these work or not?

I have one but still have not the chance to get the engine running, and i know wondering about the measures of the rear. All OG VW-Pullys are 49,90mm,


Just measured my OG pulley and had 49.9mm exactly.


your OG OT Pulley or OG VW Pulley?


I find that a curious and somewhat uninformed question! (No offense intended - few of us have direct experience with these, I guess.)

...From the first days of Porsche, they used the same crankshaft bore as VW, and every aspect of the crankshaft bore, including both the pulley end and the flywheel end, were identical for both companies engines. They remained the same until the advent of the three-piece crankcase for Porsche when Porsche bumped up the bore by a quarter millimeter, presumably to prevent the use of the VW bearing in their new case instead of the new bronze backed bearings introduced at the same time. (That didn't entirely work, though, because some aftermarket companies made a VW style bearing in the Porsche size! This means that you COULD have align-bored your VW to one quarter mm oversize and run EITHER a standard Porsche bearing OR an aftermarket bearing and I have seen many cases, both VW and Porsche, that had this done to them...

So, what I'm saying is; they're the same.

I also went and just measured two of my four "OG" OT pulleys - the two that aren't presently mounted on an engine! - and they were 49.92 and 49.91mm, respectively.

The pulley bore in the case, by the way, starts at EXACTLY the same bore size as the #4 main bearing's outside diameter because the two bores are cut by the same cutter at the same time. (IE: the pulley bore is nominally 50mm.)

If the ISP West product is indeed 49.3 as the image shows, they would likely leak, I would think (!!) and they should in any event fix this manufacturing oversight.

Now, they ARE aluminum and aluminum has a different coefficient of expansion than steel (or maybe they're iron?) does, so they might need to be a tiny bit smaller to ensure they don't rub when hot, but I seriously doubt that they need 0.6mm for that! ...That's 0.3 per side, of course, but still...

thats what isp wrote me back:
Hi,

It is a very small difference and it will not cause an oil leak.

Thank you,
Alex Pegado
ISP West
310 637 2100


I don't think 23 thou is "very small" but what do I know.
_________________
Wildthings wrote:
As a general rule, cheap parts are the most expensive parts you can buy.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
jdub63
Samba Member


Joined: April 06, 2008
Posts: 225
Location: Azle
jdub63 is offline 

PostPosted: Thu Dec 22, 2016 8:38 am    Post subject: Re: Reproduction OT Pulley's Reply with quote

What size belts are ya'll running with these pulley's? I'm using the stock generator pulley on my 36HP case and I've tried several but all of them are too long.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
jdub63
Samba Member


Joined: April 06, 2008
Posts: 225
Location: Azle
jdub63 is offline 

PostPosted: Sat Dec 24, 2016 10:25 am    Post subject: Re: Reproduction OT Pulley's Reply with quote

So here's a couple of pictures of my belt trials...

zero shims between the pulley


Image may have been reduced in size. Click image to view fullscreen.

Image may have been reduced in size. Click image to view fullscreen.

Image may have been reduced in size. Click image to view fullscreen.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Erik G
Samba Member


Joined: October 16, 2002
Posts: 13247
Location: Tejas!
Erik G is offline 

PostPosted: Sun Dec 25, 2016 8:01 am    Post subject: Re: Reproduction OT Pulley's Reply with quote

Use a piece of rope and then measure the rope
_________________
Stop dead photo links! Post your photos to The Samba Gallery!
Back to top
View user's profile Send private message Facebook Instagram Gallery Classifieds Feedback
txoval
Samba Member


Joined: January 23, 2004
Posts: 3540
Location: The Woodlands, TX
txoval is offline 

PostPosted: Sun Dec 25, 2016 8:37 am    Post subject: Re: Reproduction OT Pulley's Reply with quote

Go with an 887 belt

http://www.vbeltsupply.com/spz887-1.html
Back to top
View user's profile Send private message Send e-mail Gallery Classifieds Feedback
jdub63
Samba Member


Joined: April 06, 2008
Posts: 225
Location: Azle
jdub63 is offline 

PostPosted: Mon Dec 26, 2016 9:17 pm    Post subject: Re: Reproduction OT Pulley's Reply with quote

I ordered a 10x888, we'll see if that one works.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
johnny d
Samba Member


Joined: March 22, 2004
Posts: 2204
Location: where it all came from. ;)
johnny d is offline 

PostPosted: Thu Dec 29, 2016 4:31 pm    Post subject: Re: Reproduction OT Pulley's Reply with quote

sorry, i can´t help you out here.. i ordered ten different belts until i found this one, that works the best..
Image may have been reduced in size. Click image to view fullscreen.

_________________
GermanRestoKommando
&
Der Barndoor Führers - Slamm Society
&
VWKernzentrale since 2007
Back to top
View user's profile Send private message Visit poster's website Gallery Classifieds Feedback
EverettB Premium Member
Administrator


Joined: April 11, 2000
Posts: 69733
Location: Phoenix Metro
EverettB is offline 

PostPosted: Thu Dec 29, 2016 10:06 pm    Post subject: Re: Reproduction OT Pulley's Reply with quote

johnny d - Did you forget to post the belt size you used?
_________________
How to Post Photos
Everett Barnes - [email protected] | My wanted ads
"Water is the only drink for a wise man" | "Communication prevents complaints"
Stop dead photo links! Post your photos to The Samba Gallery!
Back to top
View user's profile Send private message Send e-mail Visit poster's website Facebook Instagram Gallery Classifieds Feedback
rtroy
Samba Member


Joined: June 03, 2009
Posts: 259
Location: California
rtroy is offline 

PostPosted: Mon Jan 02, 2017 10:04 am    Post subject: Re: Reproduction OT Pulley's Reply with quote

IDK why anyone would have trouble with the belt size; if you run the stock 36hp gen pulley, the standard belt should fit fine. Here's an example with a genuine OT pulley, 36hp gen pulley circa 1959, and a stock belt:


Image may have been reduced in size. Click image to view fullscreen.



Image may have been reduced in size. Click image to view fullscreen.



Remember, the OT pulley is the same size as the standard 36hp pulley; while it will take a wider belt, a wider belt is not required.

If you have a problem, it's probably because the repro isn't that faithful. . .
_________________
Richard

Karmann Ghia and Porsche 356 enthusiast
Founder, The Karmann Ghia Club of N. America
Back to top
View user's profile Send private message Send e-mail Gallery Classifieds Feedback
Mr. Okrasa Premium Member
Original Old Speed


Joined: May 20, 2000
Posts: 726
Location: Eastside, Costa Mesa. So. Califas...Loco's ;-)
Mr. Okrasa is offline 

PostPosted: Sun Mar 05, 2017 11:03 pm    Post subject: Re: Reproduction OT Pulley's Reply with quote

jdub63 wrote:
So here's a couple of pictures of my belt trials...

Image may have been reduced in size. Click image to view fullscreen.


jdub63

You have the correct 36hp generator pulley as I can tell from your photo that 1 half has a "wider" lip. Not sure if rtroy is aware that he is not running a 36hp generator pulley but a much later one. Probably a 40hp which explains why his fan belt fits and yours doesn't. You can see on my engine, I'm running a 10X900 Continental belt BUT with a Denzel crankshaft pulley. See photo below.

Image may have been reduced in size. Click image to view fullscreen.


Have you tried running a fan belt WITHOUT the "cog" type serrations? That may help. Good luck, Mr. Okrasa Cool
_________________


See my Instagram: https://www.instagram.com/okrasa/

1959 VW Karmann Ghia Coupe / Bamboo-Green / Denzel 1300cc / OG. owner, paint Wink

Denzel engine running. See this link: https://youtu.be/DgUlsQDTXTE

VW www.Okrasa.com
356 www.PreA356.com
Back to top
View user's profile Send private message Send e-mail Visit poster's website Instagram Gallery Classifieds Feedback
Mr.Ragtop
Samba Member


Joined: February 04, 2010
Posts: 46
Location: colorado
Mr.Ragtop is offline 

PostPosted: Sat Jul 29, 2017 10:29 pm    Post subject: Re: Reproduction OT Pulley's Reply with quote

Anything new from Anthony on the oil slingers section being too small. I've now heard from multiple people that they cause oil leaks at the pulley.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
johnny d
Samba Member


Joined: March 22, 2004
Posts: 2204
Location: where it all came from. ;)
johnny d is offline 

PostPosted: Fri Aug 25, 2017 11:51 am    Post subject: Re: Reproduction OT Pulley's Reply with quote

Mr.Ragtop wrote:
Anything new from Anthony on the oil slingers section being too small. I've now heard from multiple people that they cause oil leaks at the pulley.


Not heared anything, but mine is also leaking.. Sad
_________________
GermanRestoKommando
&
Der Barndoor Führers - Slamm Society
&
VWKernzentrale since 2007
Back to top
View user's profile Send private message Visit poster's website Gallery Classifieds Feedback
sled
Samba Member


Joined: February 16, 2005
Posts: 6171

sled is offline 

PostPosted: Fri Aug 25, 2017 4:36 pm    Post subject: Re: Reproduction OT Pulley's Reply with quote

leaked like a sieve on an okrasa engine I worked on...yanked it off for an original pulley, much better!!

they don't even look that cool Shocked
_________________
drive your split.
Back to top
View user's profile Send private message Instagram Gallery Classifieds Feedback
Mr. Okrasa Premium Member
Original Old Speed


Joined: May 20, 2000
Posts: 726
Location: Eastside, Costa Mesa. So. Califas...Loco's ;-)
Mr. Okrasa is offline 

PostPosted: Tue Aug 29, 2017 12:30 pm    Post subject: Re: Reproduction OT Pulley's Reply with quote

I just received (2) OT crankshaft pulleys and by reading this thread, I think I should send them back? The top pulley is the
one from ISP and the bottom is a stock pulley. The measurements are way off!..........UGH Crying or Very sad Thoughts anybody?

Image may have been reduced in size. Click image to view fullscreen.

Image may have been reduced in size. Click image to view fullscreen.

_________________


See my Instagram: https://www.instagram.com/okrasa/

1959 VW Karmann Ghia Coupe / Bamboo-Green / Denzel 1300cc / OG. owner, paint Wink

Denzel engine running. See this link: https://youtu.be/DgUlsQDTXTE

VW www.Okrasa.com
356 www.PreA356.com
Back to top
View user's profile Send private message Send e-mail Visit poster's website Instagram Gallery Classifieds Feedback
Mr.Ragtop
Samba Member


Joined: February 04, 2010
Posts: 46
Location: colorado
Mr.Ragtop is offline 

PostPosted: Tue Sep 26, 2017 10:13 pm    Post subject: Re: Reproduction OT Pulley's Reply with quote

I sand blasted mine and then had it welded up. I'll be lathing it back down to the correct 49.9mm and then cutting the "sling grooves" back in. Should be good to go then
Image may have been reduced in size. Click image to view fullscreen.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Display posts from previous:   
Reply to topic    Forum Index -> Vintage Speed All times are Mountain Standard Time/Pacific Daylight Savings Time
Page: Previous  1, 2, 3, 4, 5, 6, 7, 8  Next
Page 5 of 8

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

About | Help! | Advertise | Donate | Premium Membership | Privacy/Terms of Use | Contact Us | Site Map
Copyright © 1996-2023, Everett Barnes. All Rights Reserved.
Not affiliated with or sponsored by Volkswagen of America | Forum powered by phpBB
Links to eBay or other vendor sites may be affiliate links where the site receives compensation.