Using a Boxster Rear Hub for 5 Bolt Conversion, I think it will be EASY |
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Using a Boxster Rear Hub for 5 Bolt Conversion, I think it will be EASY |
914Sixer |
Nov 19 2014, 06:10 PM
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#1
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914 Guru Group: Members Posts: 8,845 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region |
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) |
ClayPerrine |
Nov 19 2014, 07:00 PM
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#2
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Life's been good to me so far..... Group: Admin Posts: 15,367 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille |
IIRC, the Boxster stub axle is a 6 bolt that is the same size as a 944 turbo CV joint. Use the Boxster hub and stub, and then use the 944 CV conversion procedure.
Should be a complete bolt on for a 914. |
r_towle |
Nov 19 2014, 07:10 PM
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#3
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Custom Member Group: Members Posts: 24,499 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States |
Because I have a set of early 911 trailing arms in the back of a very cold barn....
Could you explain what I might be able to use from an old 911 trailing arm to help me switch to five lugs? |
914Sixer |
Nov 19 2014, 07:14 PM
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#4
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914 Guru Group: Members Posts: 8,845 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region |
So, you need to disassemble the axle from the Boxster and get the stub off then. I will see if I can find one. I like the idea of using the 944 CV conversion.
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914Sixer |
Nov 19 2014, 07:17 PM
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#5
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914 Guru Group: Members Posts: 8,845 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region |
The trailing arms need to be 69 or later to be used for the 5 lug conversion. You will need to take the 5 lug hubs out of the swing arm. If you have the stub axle from the axle you can use them too.
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Series9 |
Nov 19 2014, 07:19 PM
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#6
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Lesbians taste like chicken. Group: Members Posts: 5,444 Joined: 22-August 04 From: DeLand, FL Member No.: 2,602 Region Association: South East States |
This could be a very productive thread. Nice job.
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r_towle |
Nov 19 2014, 07:58 PM
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#7
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Custom Member Group: Members Posts: 24,499 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States |
The trailing arms need to be 69 or later to be used for the 5 lug conversion. You will need to take the 5 lug hubs out of the swing arm. If you have the stub axle from the axle you can use them too. I will drop my hijack in one last question. How do I know what year these trailing arms Are from... |
914Sixer |
Nov 19 2014, 08:33 PM
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#8
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914 Guru Group: Members Posts: 8,845 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region |
Early 65-68 arms have a long stub axle and long hub. 74-Up are aluminum. Go to ebay for early 911 trailing arms or rear hubs and look at the images. Hope this helps.
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Woody |
Nov 19 2014, 09:08 PM
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#9
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Sandbox Rabblerouser and head toilet scrubber Group: Members Posts: 3,858 Joined: 28-December 10 From: San Antonio Texas Member No.: 12,530 Region Association: Southwest Region |
This could be a very productive thread. Nice job. (IMG:style_emoticons/default/agree.gif) (IMG:style_emoticons/default/beerchug.gif) |
0396 |
Nov 19 2014, 10:05 PM
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#10
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Advanced Member Group: Members Posts: 2,046 Joined: 13-October 03 From: L.A. Calif Member No.: 1,245 Region Association: Southern California |
Excellent work. (IMG:style_emoticons/default/piratenanner.gif) (IMG:style_emoticons/default/piratenanner.gif) (IMG:style_emoticons/default/drunk.gif)
One quick question...what year / years were those Boxster rear hubs? |
914Sixer |
Nov 19 2014, 10:25 PM
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#11
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914 Guru Group: Members Posts: 8,845 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region |
I used a 97-04 boxster rear hub. Part number 996.341.605.54 on the hub. I just ordered a Boxster axle to check out what Clay said about getting the stub off and using a 944 CV Joint.
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rick 918-S |
Nov 19 2014, 11:06 PM
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#12
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Hey nice rack! -Celette Group: Members Posts: 20,354 Joined: 30-December 02 From: Now in Superior WI Member No.: 43 Region Association: Northstar Region |
Nice!
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McMark |
Nov 20 2014, 12:47 PM
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#13
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914 Freak! Group: Retired Admin Posts: 20,177 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
Watching with interest. (IMG:style_emoticons/default/popcorn[1].gif)
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nsyr |
Nov 20 2014, 07:07 PM
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#14
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Because I Can Group: Members Posts: 314 Joined: 16-May 04 From: Tampa, FL Member No.: 2,073 |
This would be a nice option for a subaru engine/trans conversion. Use the boxster axles and respline them to except the subaru cv on the trans side.
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914Sixer |
Nov 21 2014, 10:36 PM
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#15
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914 Guru Group: Members Posts: 8,845 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region |
New interesting development about the axle. I paid $60 for a used one and I could have gotten a NEW aftermarket one for $81 shipped with new bolts,straps and axle nut. I am guessing they are the same as some part used on the the VW/Audi line of cars. It will be Tues or Wed before used axle shows up.
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El Vikingo Tropical |
Nov 22 2014, 12:23 AM
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#16
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Newbie Group: Members Posts: 39 Joined: 10-October 14 From: Canary islands Member No.: 18,003 Region Association: None |
A good and productiv thread
(IMG:style_emoticons/default/popcorn[1].gif) |
davep |
Nov 22 2014, 08:46 PM
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#17
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914 Historian Group: Benefactors Posts: 5,132 Joined: 13-October 03 From: Burford, ON, N0E 1A0 Member No.: 1,244 Region Association: Canada |
I agree, this is an interesting development. I have all the original parts for the six, but when the time comes to replace the CV's this system looks to have great potential.
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McMark |
Dec 12 2014, 12:34 PM
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#18
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914 Freak! Group: Retired Admin Posts: 20,177 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
Any updates? (IMG:style_emoticons/default/popcorn[1].gif)
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SirAndy |
Dec 12 2014, 12:48 PM
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#19
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Resident German Group: Admin Posts: 41,581 Joined: 21-January 03 From: Oakland, Kalifornia Member No.: 179 Region Association: Northern California |
(IMG:style_emoticons/default/agree.gif) Having a hub centric option for the rear would be great. (IMG:style_emoticons/default/smile.gif) |
914Sixer |
Dec 12 2014, 06:24 PM
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#20
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914 Guru Group: Members Posts: 8,845 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region |
I will be working on a update for this weekend. Boxster axles came in but they do not look promising. -6 rotor will require new holes to hold rotor on boxster hub.
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