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nautha Samba Member
Joined: December 06, 2011 Posts: 83
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Posted: Thu Feb 19, 2015 11:22 am Post subject: Suspicious 5x130 Porsche pattern front rotors... |
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Hi everybody,
this is to know if someone of you have ever mounted the 5x130 rotors like this one that vendors use to sell as a kit or as single replacement parts.
Exactly, my question is if the rotors like the one in my picture are safe to be used with pressed-in studs or not!
The thickness in the lower inner ribbed area is not more than 0.235 in. Scary...!
The rotor in the pictures is the rotor the majority of vendors use to sell as the 5x130 version, and these are directly from a big distributor..
Even the blank version has inside the same ribbed section typical of the 4x130 rotors, makin it dangerous to be drilled for a 5x130 porsche pattern, specially for use with press-in studs..
Why the do not sell a flat-inside version for the d.i.y. drills???
Any suggestion or pics will be very appreciated, thanks...
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Airkewld Samba Member
Joined: November 14, 2003 Posts: 3150 Location: Goodyear, AZ USA
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Posted: Thu Feb 19, 2015 12:49 pm Post subject: |
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These rotors are not designed with the pressed in stud design. Thread only.
BUT..... if you machine a flat spot with in the stud hole to all the head to sit flat and you open the hole to the knurl size required, it can be done.
You need to think like a supplier and not as the perfect world parts getter. Most of the time, vendors are looking at making a small mod to an already existing platform to add a touch or tow here or there to create a new product. They would never think about redoing the hole back of the rotor, that would cost too much time and effort.
This is why we made our own. _________________ TheSamba members-only discount - Samba24
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microbus Samba Member
Joined: October 12, 2007 Posts: 527 Location: Alberta, Canada
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Posted: Thu Feb 19, 2015 12:49 pm Post subject: |
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Not alot of "meat" for the threads to bite... scary! _________________ Darsh Import/ Dubsport Inc... my own VW Parts and Repair shop.
Automotive Service Technician |
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nautha Samba Member
Joined: December 06, 2011 Posts: 83
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Posted: Thu Feb 19, 2015 12:59 pm Post subject: |
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Airkewld wrote: |
These rotors are not designed with the pressed in stud design. Thread only.
BUT..... if you machine a flat spot with in the stud hole to all the head to sit flat and you open the hole to the knurl size required, it can be done.
You need to think like a supplier and not as the perfect world parts getter. Most of the time, vendors are looking at making a small mod to an already existing platform to add a touch or tow here or there to create a new product. They would never think about redoing the hole back of the rotor, that would cost too much time and effort.
This is why we made our own. |
Thanks Pete.
What impress me is the (very) lack of material in the lower area that would maybe be not enough for both thread or studs. Its less than 6mm. Way less when you will have to spot flat the hole for the stud seat.
I understand your statement as supplier, but not everything is "salable" when it comes to safety and now i know why you are truly behind your products and why you test so much them.
For sure one of you "Bad" kits would be the final solution.
Thank you. |
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Airkewld Samba Member
Joined: November 14, 2003 Posts: 3150 Location: Goodyear, AZ USA
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Posted: Thu Feb 19, 2015 5:01 pm Post subject: |
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nautha wrote: |
What impress me is the (very) lack of material in the lower area that would maybe be not enough for both thread or studs. Its less than 6mm. Way less when you will have to spot flat the hole for the stud seat.
I understand your statement as supplier, but not everything is "salable" when it comes to safety and now i know why you are truly behind your products and why you test so much them. |
They never intended them to be studded from the inside, that is customization. Check a factory drum, they are with in those 6mm specs. Perfect for a 40hp car going 50 miles an hour, but who really does that anymore. _________________ TheSamba members-only discount - Samba24
Win a FREE Chassis Rebuild - https://airkewld.co/WinAChassis
Learn from a PRO on Patreon - https://www.patreon.com/Airkewld
FAQ - https://airkewld.co/FAQ
View our Industry Leading Products - https://www.airkewld.com/Products-s/2322.htm
We made a iPhone Ringtone with a Classic VW Turbo Engine - https://airkewld.co/RingtoneTurbo
YouTube Channel - https://airkewld.co/SubSamba |
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drscope Samba Member
Joined: February 19, 2007 Posts: 15273 Location: Baltimore, Maryland USA
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Posted: Fri Feb 20, 2015 10:05 am Post subject: |
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Airkewld wrote: |
nautha wrote: |
What impress me is the (very) lack of material in the lower area that would maybe be not enough for both thread or studs. Its less than 6mm. Way less when you will have to spot flat the hole for the stud seat.
I understand your statement as supplier, but not everything is "salable" when it comes to safety and now i know why you are truly behind your products and why you test so much them. |
They never intended them to be studded from the inside, that is customization. Check a factory drum, they are with in those 6mm specs. Perfect for a 40hp car going 50 miles an hour, but who really does that anymore. |
Perfect for a 40hp car going 50 miles an hour, with 3-1/2 inch wide bias ply tires and 40 year old rubber compound recipes. But slip on a modern tire that has way more grip and you are asking for trouble if you go out to play. _________________ Mother Nature is a Mean Evil Bitch! |
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Busbodger Samba Member
Joined: July 08, 2012 Posts: 116 Location: Small Town, Tennessee
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Posted: Thu Mar 05, 2020 8:46 am Post subject: Re: Suspicious 5x130 Porsche pattern front rotors... |
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Old thread but I've spent a fair amount of time researching a parts source and found it:
SKU AC407002
That'll lead you to Mid-America in the USA and VW Heritage in the UK.
The MA part# is: 353-373
I'm considering machining a steel ring that will lay inside the rotor that I'll press the studs through - thickness dependent on width of stud knurls. Then they can slide through the rotor holes which I will machine out for a slip fit.
Then I'll bolt the wheel on and then test the wheel nut torque on a regular basis until I trust them. |
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dougefresh Samba Member
Joined: June 22, 2002 Posts: 74 Location: Lakeland, FL.
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Posted: Sun Jun 18, 2023 4:44 am Post subject: Re: Suspicious 5x130 Porsche pattern front rotors... |
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Busbodger wrote: |
Old thread but I've spent a fair amount of time researching a parts source and found it:
SKU AC407002
That'll lead you to Mid-America in the USA and VW Heritage in the UK.
The MA part# is: 353-373
I'm considering machining a steel ring that will lay inside the rotor that I'll press the studs through - thickness dependent on width of stud knurls. Then they can slide through the rotor holes which I will machine out for a slip fit.
Then I'll bolt the wheel on and then test the wheel nut torque on a regular basis until I trust them. |
Mid America shows it here. https://www.mamotorworks.com/vw/product/vw-1966-19...ern-353373
It shows as unavailable. They must have custom manufactured this, as the inside surface is flat, not the raised bosses like the stock disk. _________________ Doug
Lakeland, FL.
79 SB Conv
70 Fastback. Currently in elective surgery for BMW 2002 front brake calipers and Porsche 944 rears.
2001 Dodge Dakota, 273K miles. |
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Kafer_Mike Samba Member
Joined: June 23, 2004 Posts: 348 Location: Noblesville, IN
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Posted: Tue Jun 20, 2023 8:55 am Post subject: Re: Suspicious 5x130 Porsche pattern front rotors... |
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The prior post is three (3) years old. I doubt he's still looking. _________________ Kafer_Mike
Build 'em fast...or let 'em sit. |
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Busbodger Samba Member
Joined: July 08, 2012 Posts: 116 Location: Small Town, Tennessee
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Posted: Mon Jul 17, 2023 12:44 pm Post subject: Re: Suspicious 5x130 Porsche pattern front rotors... |
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Thanks for the post. I finally was able to buy those rotors a couple of years ago.
MidAmerica did reach out to tell me that the rotors came available for a short time, they must be buying or making small batches of these rotors. |
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