Yet another 5-lug rear conversion, some questions |
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Yet another 5-lug rear conversion, some questions |
TonyAKAVW |
May 23 2009, 09:42 PM
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#1
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That's my ride. Group: Members Posts: 2,151 Joined: 17-January 03 From: Redondo Beach, CA Member No.: 166 Region Association: None |
I've been reading up on lots of threads about the rear conversion, CV joints, etc. etc. I'm not 100% clear on everything, but more importantly I'm not exactly sure what I have...
A few years ago I picked up a roller that was in the early stages of a -6 conversion. The owner worked at a Porsche shop here in socal, and had put a 1987 SC front end on the car, and started to do the 5-lug rear conversion. So what I have are a pair of trailing arms with some stuff installed. From what I can tell from the other threads, I have a 74+ hubcentric wheel flange, early 911 stub axles, and on one of the trailing arms, a partially complete 911 handbrake. The other trailing arm has the dust shield portion installed, but no shoes, etc. The stub axle flanges measure 100 mm across in total diameter (edge to edge). Now for the questions: 1. There were several threads about spacers required for the hubcentric wheel flanges, but I couldn't figure out where these spacers are supposed to go. Second, is there a way I can tell if this setup has them or not? 2. I'm hoping to use the 944 CV joints, 914 axle, and 911 coarse splined output flanges. Based on what I have are there any issues? 3. Brakes. I currently have the A calipers on the front and stock 914 rear calipers. When I finish this rear 5-lug conversion I will have to choose between upgrading the rears to the V-calipers or moving my A calipers to the rear, and using Boxster calipers on the front. As far as I can tell, there is little to convince me to go with the V-caliper. A set of Boxster calipers is ~$300 off ebay, and I figure I should be able to make a set of adapters on my milling machine. The V-calipers are nearly $600 and offer no change in pad size on the rear. I realize that fora narrow bodied car, the setup I'm proposing is overkill, but if in the future I decide to flare, I'd have the brakes already done. I have a 165 HP Subaru motor, and I'm sitting at about 1900 lb right now, with some weight still to come off. So the question here is any suggestions/opinions? 4. If I do put the A calipers on the back, are they strictly bolt-on or will I need to modify anything? -Tony Attached image(s) |
charliew |
May 24 2009, 03:58 PM
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#2
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Advanced Member Group: Members Posts: 2,363 Joined: 31-July 07 From: Crawford, TX. Member No.: 7,958 |
Tony you've got most of the parts. The stop block really should be welded on the arm casting as it would be a lot stronger than being on the backing plate. The block should be 40mm wide. The spreader you have looks like the 84 up 944 spreader and it will work from a angled cable. I call it a angled spreader. They are even on bmw's. There is a earlier one that is straight but very similiar. Then there is the one you referred to as the one (butterfly) that needs the sheath to work properly. That's where the backing plates came from (65-68 steel arm 911) You could actually make a short extension from the 914 cable to reach the spreader. You will need to rotate the cable mount that anchors the 914 cable. It may already have been done. The spacer you checked on was because the 911 bearing is wider than the 914 bearing and the flange is cut back more to allow for it. The stop block is part of the aluminum housing on the 944, not part of the backing plate. Your backing plates seem to be on right to me the spreader goes on the same side as the emer. brake cables. As yours appear to be. Brad on the club has pictures of a boxter eb assembly and it is also nearly identical. The shoes may be narrower though.
I think I remember the part about the inner spacer as being one that spaces the cv out to allow for the 911 axles that are "almost long enough". |
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