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frikendelicious Samba Member
Joined: February 29, 2008 Posts: 63 Location: holland
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Posted: Wed Sep 27, 2017 3:39 am Post subject: Re: Reproduction OT Pulley's |
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I believe they reduced the diameter to prevent the pulley from cutting into the case. This happend a lot with the earlier ISP ones. The aluminium expands more than the original pulley. The reduced diameter is now causing the oil leaks. So Im wondering: is that only when the engine is cold, or is it also still leaking when warm? Either way, not really nice!
thanks,
jeroen |
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Mr.Ragtop Samba Member
Joined: February 04, 2010 Posts: 46 Location: colorado
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Posted: Wed Sep 27, 2017 8:27 am Post subject: Re: Reproduction OT Pulley's |
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That shouldn't matter. Empi and many others have made aluminum pulleys with the correct diameter for years without issues. So what would make these ones expend any different?
The gap that is between the case and pulley snout is still pretty decent even with an original pulley. Steel doesn't expand at the same rate that aluminum does but the difference between steel and aluminum at full heat is very small. |
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DONGKG The Araneta Boys
Joined: August 28, 2006 Posts: 5475 Location: Cainta, Rizal, Philippines, "A Certified Type 3 and Karmann Ghia Maniac"
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Posted: Wed Oct 04, 2017 10:15 pm Post subject: Re: Reproduction OT Pulley's |
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Mr.Ragtop wrote: |
That shouldn't matter. Empi and many others have made aluminum pulleys with the correct diameter for years without issues. So what would make these ones expend any different?
The gap that is between the case and pulley snout is still pretty decent even with an original pulley. Steel doesn't expand at the same rate that aluminum does but the difference between steel and aluminum at full heat is very small. |
Isn't it that, heated, steel expands more than an aluminum? _________________ '67 KG Cabrio (Mickey) ;
'66 Type 3 (Sharky 2)
'72 Type 2 Homey
'67 Splitty Bus
'65 beetle;'69 Country Buggy; '44 Kubelwagen (replica) TOOB MEMBER #20 |
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Mr.Ragtop Samba Member
Joined: February 04, 2010 Posts: 46 Location: colorado
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Posted: Sun Nov 19, 2017 9:28 pm Post subject: Re: Reproduction OT Pulley's |
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DONGKG wrote: |
Mr.Ragtop wrote: |
That shouldn't matter. Empi and many others have made aluminum pulleys with the correct diameter for years without issues. So what would make these ones expend any different?
The gap that is between the case and pulley snout is still pretty decent even with an original pulley. Steel doesn't expand at the same rate that aluminum does but the difference between steel and aluminum at full heat is very small. |
Isn't it that, heated, steel expands more than an aluminum? |
No. Aluminum expands at a fast rate and expands further than steel. |
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oldbusboy Samba Member
Joined: June 25, 2006 Posts: 604 Location: Bowen Island, BC Canada
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Posted: Sat Dec 23, 2017 10:46 am Post subject: Re: Reproduction OT Pulley's |
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If the ISP OT copy pulleys are leaking, then they should take them back.
I have one on an Okrasa build that I haven't run yet.. I bought the pulley a couple years ago, so it would be interesting to see if it would be accepted as a return.
Trevor _________________ 1968 porsche |
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Mr.Ragtop Samba Member
Joined: February 04, 2010 Posts: 46 Location: colorado
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Posted: Sun Feb 25, 2018 12:56 pm Post subject: Re: Reproduction OT Pulley's |
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oldbusboy wrote: |
If the ISP OT copy pulleys are leaking, then they should take them back.
I have one on an Okrasa build that I haven't run yet.. I bought the pulley a couple years ago, so it would be interesting to see if it would be accepted as a return.
Trevor |
I agree they should take them back. From talking to a friend yesterday, I guess they are aware of the issue and are concerned about it. No idea what they will do. I got mine cheap enough and have the skills to correct it. Not worth going through the hoops to get a new one hoping it’s different. |
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johnny d Samba Member
Joined: March 22, 2004 Posts: 2204 Location: where it all came from. ;)
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Posted: Tue Feb 27, 2018 12:41 pm Post subject: Re: Reproduction OT Pulley's |
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Mr.Ragtop wrote: |
[...]and have the skills to correct it. |
so what you are going to do with it? _________________ GermanRestoKommando
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Der Barndoor Führers - Slamm Society
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VWKernzentrale since 2007 |
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mr. warehouse Samba Member
Joined: February 27, 2001 Posts: 5001 Location: Nor Cal 707
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Posted: Sat Jul 21, 2018 2:25 pm Post subject: Re: Reproduction OT Pulley's |
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I have a leaking ISP West OT pulley as well.
I've thought of turning it down and running sand seal.
Thoughts? |
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Mr. Okrasa Original Old Speed
Joined: May 20, 2000 Posts: 726 Location: Eastside, Costa Mesa. So. Califas...Loco's ;-)
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Posted: Mon Jul 23, 2018 12:47 pm Post subject: Re: Reproduction OT Pulley's |
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mr. warehouse wrote: |
I have a leaking ISP West OT pulley as well.
I've thought of turning it down and running sand seal.
Thoughts? |
You can turn the neck down of the ISP pulley but you have to add a steel collar otherwise the seal will cut into the aluminum. _________________
See my Instagram: https://www.instagram.com/okrasa/
1959 VW Karmann Ghia Coupe / Bamboo-Green / Denzel 1300cc / OG. owner, paint
Denzel engine running. See this link: https://youtu.be/DgUlsQDTXTE
VW www.Okrasa.com
356 www.PreA356.com |
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mr. warehouse Samba Member
Joined: February 27, 2001 Posts: 5001 Location: Nor Cal 707
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Posted: Mon Jul 23, 2018 12:56 pm Post subject: Re: Reproduction OT Pulley's |
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Mr. Okrasa wrote: |
mr. warehouse wrote: |
I have a leaking ISP West OT pulley as well.
I've thought of turning it down and running sand seal.
Thoughts? |
You can turn the neck down of the ISP pulley but you have to add a steel collar otherwise the seal will cut into the aluminum. |
Thanks. I was told to use a "Speedi Sleeve" or similar. In the meantime, I swapped it out for a Speedwell Denzel pulley and the leak has stopped. |
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Mr.Ragtop Samba Member
Joined: February 04, 2010 Posts: 46 Location: colorado
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Posted: Wed Aug 01, 2018 9:24 pm Post subject: Re: Reproduction OT Pulley's |
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johnny d wrote: |
Mr.Ragtop wrote: |
[...]and have the skills to correct it. |
so what you are going to do with it? |
If you look at the other pages in this thread, i talk about fixing my pulley. I had it welded to make the OD much bigger. I will then lathe is down to the correct size of a stock pulley. Then lathe in the “slinger” groove again. It’s a lot of work, but if you have the tools and are able to do the work yourself, it’s not a big deal in the end. Here is the pic again after being welded.....
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Mr.Ragtop Samba Member
Joined: February 04, 2010 Posts: 46 Location: colorado
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Posted: Mon Jul 08, 2019 9:19 pm Post subject: Re: Reproduction OT Pulley's |
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Well I finally got around to finishing the pulley fix. It was machined to the exact dimensions of a stock pulley.
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motofly196 Samba Member
Joined: June 01, 2008 Posts: 1467 Location: Eastern WA
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Posted: Sun Jul 14, 2019 7:27 pm Post subject: Re: Reproduction OT Pulley's |
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That's some beautiful machine work! Be careful...you just might be getting request to fix a bunch of them! |
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johnny d Samba Member
Joined: March 22, 2004 Posts: 2204 Location: where it all came from. ;)
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Posted: Wed Oct 30, 2019 9:02 am Post subject: Re: Reproduction OT Pulley's |
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its pretty nicly done.
ISP should do that to all our pulley. As there a lot of guys out there they can´t do this by there self. me included. _________________ GermanRestoKommando
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Der Barndoor Führers - Slamm Society
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VWKernzentrale since 2007 |
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johnny d Samba Member
Joined: March 22, 2004 Posts: 2204 Location: where it all came from. ;)
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Posted: Wed Oct 30, 2019 9:05 am Post subject: Re: Reproduction OT Pulley's |
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mr. warehouse wrote: |
Thanks. I was told to use a "Speedi Sleeve" or similar. In the meantime, I swapped it out for a Speedwell Denzel pulley and the leak has stopped. |
ha, me too greg! _________________ GermanRestoKommando
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Der Barndoor Führers - Slamm Society
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VWKernzentrale since 2007 |
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Ted2 Samba Member
Joined: April 07, 2004 Posts: 245
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Posted: Wed Oct 30, 2019 9:12 am Post subject: Re: Reproduction OT Pulley's |
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Mr. Ragtop,
After the repair what was the OD and the overall length? |
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Frederik Samba Member
Joined: August 18, 2007 Posts: 578 Location: Sweden
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Posted: Mon Feb 10, 2020 6:49 pm Post subject: Re: Reproduction OT Pulley's |
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I went with Stepans (stefi.g) pre-A OT pulley. It's an absolute beauty! Made of cast iron and can be used as a dinner gong of my engine plans fail. Diameter is 17cm
Thought it was better to pay a bit more and hopefully cry just once.
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ConcreteAce Samba Member
Joined: May 19, 2005 Posts: 856 Location: Spring, Texas
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Posted: Wed May 20, 2020 8:47 am Post subject: Re: Reproduction OT Pulley's |
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Frederik wrote: |
I went with Stepans (stefi.g) pre-A OT pulley. It's an absolute beauty! Made of cast iron and can be used as a dinner gong of my engine plans fail. Diameter is 17cm
Thought it was better to pay a bit more and hopefully cry just once.
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Do you have a link to this pulley and will it work on a 36er? Thanks _________________ Ethan Dunlap
Spring, Texas
'51 Deluxe
'61 Build
'68 Turbo Diesel Baja
'64 Ghia Vert
'61 Baja Build |
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ConcreteAce Samba Member
Joined: May 19, 2005 Posts: 856 Location: Spring, Texas
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Posted: Wed May 20, 2020 8:55 am Post subject: Re: Reproduction OT Pulley's |
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I wanted to give my feedback on the ISP OT pulley.
I built and installed them on 4 okrasa clone motors using the WW kit. Out of the 4 pulleys (still have a fifth one new in the box) Every single one of the motors throw oil at high RPM's all over the motor compartment. Swapping back to the stock pulley remedies the problem. Unfortunately I did not see this thread until after I bought the pulleys. I really like the way the OT pulleys compliment the Okrasa clone kits. So I plan to see how much it will cost to have them reworked. It surprises me that with all the issues that ISP has not fixed the problem. _________________ Ethan Dunlap
Spring, Texas
'51 Deluxe
'61 Build
'68 Turbo Diesel Baja
'64 Ghia Vert
'61 Baja Build |
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Frederik Samba Member
Joined: August 18, 2007 Posts: 578 Location: Sweden
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