 Using a Boxster Rear Hub for 5 Bolt Conversion, I think it will be EASY |
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| 914Sixer |
 Nov 19 2014, 06:10 PM
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914 Guru  Group: Members Posts: 9,005 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region 
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We all know that 69-73 911 rear hubs are getting scarce and pricey. I went out on a limb and bought a whole rear 99 Boxster assembly for $41 delivered on EBAY. It is a well known fact that the 914 and the Boxster use the same wheel bearing. So I figured it would be an easy swap. I drove the hub out of the bearing and started the comparison of the two hubs. I had a 69-73 911 rear hub and a -6 stub axle to use as a baseline. The Boxster hub has the same splines as the 911/914-6 stub axle so it was a drop in fit. One down, so I put them side by side to find out they are the same height. Now have two down, the last check was to set the rotors on both hubs to see where we were at. Bingo, they matched up. So the stub, the hub and the height are all the same. HOWEVER, there is one area to be addressed. the -6 stub sticks up about 5mm past the center of the hub. It is going to require a spacer to fill in the area so the washer and nut will tighten down. I am thinking that the one that Patrick Motor sports will do the trick. I think it will be worth trying because I am using Boxster wheels.
Tell me what you think. Attached image(s)      
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| 914GTSTI |
Feb 10 2015, 08:16 PM
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Member Group: Members Posts: 270 Joined: 16-September 07 From: Glendale AZ Member No.: 8,123 Region Association: None |
Thanks David,I will keep a eye on that.
So it will not be plug and play. The the hub will need to be cut to clear the bearing flange. If you look at the green paint ,its missing. (IMG:http://www.914world.com/bbs2/uploads_offsite/i257.photobucket.com-8123-1423621003.1.jpg) (IMG:http://www.914world.com/bbs2/uploads_offsite/i257.photobucket.com-8123-1423621003.2.jpg) (IMG:http://www.914world.com/bbs2/uploads_offsite/i257.photobucket.com-8123-1423621003.3.jpg) (IMG:http://www.914world.com/bbs2/uploads_offsite/i257.photobucket.com-8123-1423621003.4.jpg) Going to be tight in their with the 108's ! (IMG:http://www.914world.com/bbs2/uploads_offsite/i257.photobucket.com-8123-1423621003.5.jpg) And I stopped at Patrick Racing and got the trailing arm stiffeners. Welding in the AM. (IMG:http://www.914world.com/bbs2/uploads_offsite/i257.photobucket.com-8123-1423621003.6.jpg) One last thing,I don't think it will need any cutting on the stub shaft. More in the AM. But I have a set ! (IMG:style_emoticons/default/chair.gif) |
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| Amenson |
Feb 10 2015, 08:46 PM
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#3
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That's opposite lock!! Group: Members Posts: 645 Joined: 27-May 05 From: Dublin, OH Member No.: 4,154 Region Association: None
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QUOTE(914GTSTI @ Feb 10 2015, 06:16 PM)  Thanks David,I will keep a eye on that. So it will not be plug and play. The the hub will need to be cut to clear the bearing flange. If you look at the green paint ,its missing. Any chance the Boxster bearing flange will bolt to the 914 trailing arm. Cheers, Scott |
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Posts in this topic
914Sixer Using a Boxster Rear Hub for 5 Bolt Conversion Nov 19 2014, 06:10 PM
ClayPerrine IIRC, the Boxster stub axle is a 6 bolt that is th... Nov 19 2014, 07:00 PM r_towle Because I have a set of early 911 trailing arms in... Nov 19 2014, 07:10 PM 914Sixer So, you need to disassemble the axle from the Boxs... Nov 19 2014, 07:14 PM 914Sixer The trailing arms need to be 69 or later to be use... Nov 19 2014, 07:17 PM
r_towle
The trailing arms need to be 69 or later to be us... Nov 19 2014, 07:58 PM Series9 This could be a very productive thread. Nice job. Nov 19 2014, 07:19 PM Woody
This could be a very productive thread. Nice job... Nov 19 2014, 09:08 PM Randal
This could be a very productive thread. Nice jo... Jan 27 2015, 10:24 AM 914Sixer Early 65-68 arms have a long stub axle and long hu... Nov 19 2014, 08:33 PM 396 Excellent work. :Qarl: :Qarl: :DRUNK:
One quic... Nov 19 2014, 10:05 PM 914Sixer I used a 97-04 boxster rear hub. Part number 996.... Nov 19 2014, 10:25 PM rick 918-S Nice! Nov 19 2014, 11:06 PM McMark Watching with interest. :popcorn: Nov 20 2014, 12:47 PM blackmoon
Watching with interest. :popcorn:
:agree: seems... Jan 27 2015, 01:09 PM nsyr This would be a nice option for a subaru engine/tr... Nov 20 2014, 07:07 PM 914Sixer New interesting development about the axle. I pai... Nov 21 2014, 10:36 PM El Vikingo Tropical A good and productiv thread
:popcorn: Nov 22 2014, 12:23 AM davep I agree, this is an interesting development. I hav... Nov 22 2014, 08:46 PM McMark Any updates? :popcorn: Dec 12 2014, 12:34 PM SirAndy
Any updates? :popcorn:
:agree:
Having a hub c... Dec 12 2014, 12:48 PM 914Sixer I will be working on a update for this weekend. B... Dec 12 2014, 06:24 PM 914Sixer The 964 front hub looks like it may be another opt... Dec 12 2014, 06:46 PM Mueller
The 964 front hub looks like it may be another op... Dec 13 2014, 08:32 AM pcar916 Very cool thread. Dec 12 2014, 06:55 PM a914622 964 with splines in front should be c4 Dec 13 2014, 10:21 AM porsche913b_sp Great job, keep it coming
:popcorn: Dec 15 2014, 02:41 PM 914Sixer I am not going to make it to the shop until this c... Dec 15 2014, 04:24 PM Amenson
...HOWEVER, there is one area to be addressed. t... Dec 15 2014, 07:22 PM Amenson Really jonesing so I went looking for more info an... Dec 15 2014, 10:22 PM 914Sixer Yes, the 911 stub axle sticks up the same amount a... Dec 16 2014, 04:57 PM 3d914 Great job. Thanks. Keep the details coming! Dec 16 2014, 09:34 PM El Vikingo Tropical You can see her what you will need:
http://www.pa... Dec 17 2014, 02:34 AM Amenson I had thought that also but Patrick Motorsports ha... Dec 17 2014, 08:43 AM CptTripps Just a question: Are the Boxster parts better/chea... Dec 17 2014, 08:58 AM 914Sixer Whole rear Boxster hub assemblies can be had for l... Dec 17 2014, 03:30 PM 914Sixer Ok, here is the last of what I have found out usin... Jan 26 2015, 08:30 PM CptTripps Thanks for the intel Mark. Looks like we can put t... Jan 27 2015, 09:40 AM Amenson I am still planning to use the hubs. Still cheape... Jan 27 2015, 10:44 AM 914GTSTI I know i'm going to get flamed but will the 4 ... Jan 27 2015, 12:50 PM Mark Garriott There are some variations on this:
The 986/996 use... Jan 27 2015, 01:03 PM Larmo63 Or, you can just use real 914-6 hubs/stubs for you... Jan 27 2015, 08:05 PM 914GTSTI I ordered in some Box outer hubs.
http://www.914wo... Feb 3 2015, 01:26 PM 914GTSTI Here is a little add to using the Boxster hub. I m... Feb 10 2015, 12:43 PM Mueller ^Looks good, instead of cutting the stub axle I wo... Feb 10 2015, 01:02 PM 914GTSTI Yep, I looked at that but wanted just a little mor... Feb 10 2015, 02:11 PM Harpo Make sure your spacer is as hard as your nut (HRC)... Feb 10 2015, 04:28 PM 914GTSTI Good idea. I will look at it tomorrow. But I don... Feb 10 2015, 09:01 PM 914GTSTI Huston we have launch ! It will work,but it ta... Feb 11 2015, 12:33 PM Jeff Hail Order 4 911 rear bearing covers so they are double... Feb 12 2015, 01:18 AM 914GTSTI Here is what I found.
The 911 flange is .090 thic... Feb 12 2015, 10:41 AM Mueller Did you measure the wheel mating surface compared ... Feb 12 2015, 10:57 AM 914GTSTI The way I looked at it, the brake caliper is in th... Feb 12 2015, 11:03 AM Mueller
The way I looked at it, the brake caliper is in t... Feb 12 2015, 11:06 AM 914GTSTI No Problem !
All it takes is tools,parts,time... Feb 12 2015, 11:28 AM pete000 Might this be an option for the flange hitting the... Feb 12 2015, 12:24 PM 914GTSTI Yes this will work but may need to be chamfered ? Feb 12 2015, 12:36 PM Amenson I got in touch with Chris Foley today and the diam... Feb 12 2015, 09:25 PM 914GTSTI Scott. The retainers from my Boxster hubs will not... Feb 12 2015, 10:53 PM Amenson
Scott. The retainers from my Boxster hubs will no... Feb 13 2015, 06:59 AM 914GTSTI It mite be open enough . When I get to the shop I ... Feb 13 2015, 08:28 AM 914GTSTI The Box center hole is 2.72" +-. The 914-4 is... Feb 13 2015, 11:45 AM 914GTSTI All installed. 930 CV, cut Boxster Hub, and a 108 ... Feb 16 2015, 12:43 PM djb First, incredible thread, thank you! I have r... Mar 18 2018, 10:15 PM 914Sixer I have a set of Boxster hubs for sale if some one ... Mar 19 2018, 09:47 PM djb
I have a set of Boxster hubs for sale if some one... Mar 20 2018, 10:24 PM 914Sixer $74 shipped. The thread pretty much covers i... Mar 21 2018, 07:11 AM |
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