Dorman RAV4 5x114.3 Conversion Manufacturer Issue, We are going to break this case WIDE open Options

[Tigawoods]

This thread is now a product warning thread on the Dorman Wheel hubs for the RAV4.

I have found an issue with the Dorman 930- 419 RAV4 front wheel hubs used in the 5x100 to 5x114.3 conversion.

The studs that come in these Dorman hubs have a tapered shoulder with a knurl diameter that goes from 12.46-12.60mm
The OE replacement studs for a majority of Toyota vehicles is 14.20mm (Dormans listed studs for the RAV4 are 14.20)


Now in the case that you dont plan on having any issue with you hub this shouldnt be a problem for you and happy swapping, but...


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If you somehow break a stud or need a replacement for any reason, the hub either needs to be replaced or re-bored
If you want extended studs from companies like ARP you will either need to re-bore the holes or (I am getting in studs tomorrow that I hope will fit and will update this)
I havent looked around for a OE size stud that might be able to match the 12.6 knurl diameter maybe for some other car, that might take some time, most OE sizes seem to be above 13mm or so
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I called Dorman to get more info and they are well aware of this issue and dont know why its being manufactured that way.


Here is a pic of IS300 ARP Wheel Studs (14.17mm Knurl Diamter) Next to the Dorman Studs that came out of the wheel hub
These ARP studs WOULD have fit if the hub were the spec it should be.


This post has been edited by Tigawoods: May 16, 2016 - 12:58 PM

[HectortheRican]

Assuming the original studs didn't stretch out the holes too much, option one may work they're only barely off. 0.03mm is approx 0.001" and being that much off isn't too horrible in terms of press fit tolerances. If it were a bearing, 0.001" is huge - but this may work.
Worst case scenario, you could do option two and really hammer that sucker in - maybe try to sand off the tiniest bit of knurl. You'll be ~0.005-0.006" over and that's a pretty big amount for a press fit.

All in all, still give ARP a call - they would know more than me. I hope they don't have dopey reps answering the phone because they'll just tell you it won't work. Sometimes an email requesting an engineer's opinion works - I've had luck with those emails when researching for a design.

This post has been edited by HectortheRican: May 10, 2016 - 9:30 AM