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> Using a Boxster Rear Hub for 5 Bolt Conversion, I think it will be EASY
914Sixer
post Nov 19 2014, 06:10 PM
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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.


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ClayPerrine
post Nov 19 2014, 07:00 PM
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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.

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r_towle
post Nov 19 2014, 07:10 PM
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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?

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914Sixer
post Nov 19 2014, 07:14 PM
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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
post Nov 19 2014, 07:17 PM
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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
post Nov 19 2014, 07:19 PM
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This could be a very productive thread. Nice job.
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r_towle
post Nov 19 2014, 07:58 PM
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QUOTE(914Sixer @ Nov 19 2014, 08:17 PM) *

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...
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914Sixer
post Nov 19 2014, 08:33 PM
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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
post Nov 19 2014, 09:08 PM
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QUOTE(Series9 @ Nov 19 2014, 07:19 PM) *

This could be a very productive thread. Nice job.

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0396
post Nov 19 2014, 10:05 PM
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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?
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914Sixer
post Nov 19 2014, 10:25 PM
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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
post Nov 19 2014, 11:06 PM
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Hey nice rack! -Celette
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Nice!
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McMark
post Nov 20 2014, 12:47 PM
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Watching with interest. (IMG:style_emoticons/default/popcorn[1].gif)
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nsyr
post Nov 20 2014, 07:07 PM
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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
post Nov 21 2014, 10:36 PM
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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
post Nov 22 2014, 12:23 AM
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A good and productiv thread
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davep
post Nov 22 2014, 08:46 PM
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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
post Dec 12 2014, 12:34 PM
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Any updates? (IMG:style_emoticons/default/popcorn[1].gif)
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SirAndy
post Dec 12 2014, 12:48 PM
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QUOTE(McMark @ Dec 12 2014, 10:34 AM) *

(IMG:style_emoticons/default/agree.gif)

Having a hub centric option for the rear would be great.
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914Sixer
post Dec 12 2014, 06:24 PM
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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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