944 rear hubs for a 5 lug conversion ?, Why won't it work ? Options

[andrewb]

Hi Gents - I'm looking at doing a 5 lug conversion on my '73 and although I've searched I only find passing references to using 944 parts (I'm only looking at doing the rears at the moment).

I've therefore come to the conclusion that for some reason 944 hubs or driveshafts or discs (rotors) don't fit. Can anyone please explain why this is ? I'm guessing it's something to do with the relative positions of the existing caliper brackets and the 944 disc dammit........ rotor ?
There's also the park brake problem but there are ways round that.

The attraction of 944 parts is largely down to price and availability, the hubs certainly look as though they're interchangeable.,

(IMG:http://www.914world.com/bbs2/uploads_offsite/i68.tinypic.com-11762-1506496268.1.jpg) (IMG:http://www.914world.com/bbs2/uploads_offsite/i64.tinypic.com-11762-1506496268.2.jpg)

(not checked the splines yet) and driveshafts can generally be modified or adapted. As for the normal 5 lug conversions as detailed on Pelican I'm not a fan of putting 5 lugs in late 4 lug hubs - seems like poor engineering to me and 914/6 or 911 parts are hard to get and/or ridiculous prices.

So the question is - what am I missing ?

Thanks

Andrew

[bdstone914]

The internal spline is different so you would need the 944 stub axles. The hub offset look way different so the rotor is not going to be in the same place. What is the overall plan for the car in term of engine HP and purpose ? The drilled 914 hubs work well. Have you read Eric;s thread on the 5 lug conversion options?
http://www.914world.com/bbs2/index.php?sho...p;hl=conversion

[andrewb]

The internal spline is different so you would need the 944 stub axles. The hub offset look way different so the rotor is not going to be in the same place. What is the overall plan for the car in term of engine HP and purpose ? The drilled 914 hubs work well. Have you read Eric;s thread on the 5 lug conversion options?
http://www.914world.com/bbs2/index.php?sho...p;hl=conversion

Thanks for answering the question bdstone - you've confirmed what I suspected that the problem is where the rotor ends up relative to the caliper mounts. I'm surprised that with all the various variations of Porsche rotor over the years that something wouldn't fit - but equally if it had then 'world' is the place that would know.

My plans for the car don't include crazy power - either a big 4 or a small 6 so between 150 and 200 hp. Narrow body, road tyres. Purpose is just for 'normal' road use although I like to have fun (IMG:style_emoticons/default/biggrin.gif) and apparently our roads over here aren't as smooth as yours (IMG:style_emoticons/default/confused24.gif) . I have no plans for Auto cross or circuit driving.

Thanks for the link to Eric's thread - I'd not seen that before and it seems to cover pretty well everything so I'll keep it for reference.