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> Front end changeover in progress..., 8/8- Alignment woes
jk76.914
post Sep 9 2010, 07:45 PM
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I'm finally getting rid of the 4-to-5 lug adapters and doing a real Porsche 5 lug front suspension. Contrary to normal practice, which is normal for me, I guess, I'm installing real 914/6 struts with new Bilstein inserts. I bought the parts about 5 years ago on eBay, and the kit was all-inclusive, with freshly painted struts and new ball joints, bearings, rotors, pads, and brake hardware, and rebuilt M calipers. My excuse is I didn't know any better at the time, or I'd have looked for a later 911 set with the later bearing type, but alas, I own it now and everything is in real nice shape.

I think I'm good to go on parts and tools, but I'm trying to find out the torque requirement for the lock bolt for the ball joint. It's an M10 x 30mm x 1.5mm pitch, going into steel threads in the strut; presumably the lower part of the strut, below the tube, is forged.

Looks like an M10 grade 12.9 bolt is good for 50 ft-lbs, but I don't want to chance stripping out the threads. Nor do I want the BJ to pop because it's too loose. Does anyone know the torque spec? Thanks! Picture below-

PS- any tips for installing this type of strut? Thanks!

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jk76.914
post Jul 21 2011, 04:33 AM
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Well I'm finally getting closer. I replaced the tie rod ends last weekend, and went around and torqued everything to spec. All that's left is bleeding the brakes and a crude setting of toe-in so I can get to the alignment shop. Hopefully, that'll be some morning next week.

Regarding brakes- The brakes seem to be bled, no more bubbles coming out, but they feel WAAAAY different. LOTS of pedal travel, getting almost to the floor. Is this what I should expect with the M calipers? The old brakes worked fine, and the 19mm MS only has about 12,000 miles since new. I didn't expect this much difference.... am I missing something?

Procedure: I poured new DOT 3 fluid through the system to flush the lines first. Let it run out both brake lines (not connected yet) at both calipers simultaneously through tygon into bottles. Then did the same with my ATE DOT 4 Super Blue.... Then I connected the lines to the calipers to fill the restored caliper cylinders with the DOT 4 and bleed. I used a pressure bleeder first- limited it to 5 psi- and kept the reservoir half full at least from that point on. Finally, I had my wife press the pedal while I finished the job manually. My wife's comment about the pedal feel- "you have no brakes there." Not encouraging.

I appreciate your thoughts. Thanks!
Jim

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ArtechnikA
post Jul 21 2011, 04:39 AM
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QUOTE(jk76.914 @ Jul 21 2011, 06:33 AM) *

Regarding brakes- The brakes seem to be bled, no more bubbles coming out, but they feel WAAAAY different. LOTS of pedal travel, getting almost to the floor. Is this what I should expect with the M calipers?

The pedal should definitely stiffen up at the end of its travel.
But if the calipers have been freshly rebuilt, it takes a while (maybe 100 mi) for all the pistons to reach their 'resting' position in the O-ring seals. Until then, they're getting pulled back too far into the caliper and you have to make up that distance all over again.

But there is a big difference between lots of pedal before resistance and no resistance...
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Posts in this topic
jk76.914   Front end changeover in progress...   Sep 9 2010, 07:45 PM
ripper911   :bump: IDK   Sep 10 2010, 05:18 PM
ArtechnikA   I think I'm good to go on parts and tools, bu...   Sep 11 2010, 05:32 AM
jk76.914   I think I'm good to go on parts and tools, b...   Sep 11 2010, 06:26 AM
ArtechnikA   ...This means that the bolt is at least a 10.9 gr...   Sep 11 2010, 06:31 AM
jk76.914   ...This means that the bolt is at least a 10.9 g...   Sep 11 2010, 07:15 AM
jk76.914   Picked up an official Bilstein gland nut wrench fo...   Sep 29 2010, 06:34 PM
Cap'n Krusty   Picked up an official Bilstein gland nut wrench f...   Sep 30 2010, 10:18 AM
jk76.914   Well, I bought those inserts back in '02 whe...   Sep 30 2010, 06:27 PM
Eric_Shea   Factory Manual = 47ftlbs. Not following... you ...   Sep 29 2010, 07:00 PM
ArtechnikA   99.9% of them are fine. One article in Pano and ...   Sep 30 2010, 04:43 AM
jk76.914   I lucked out. Thanks for the vote of confidence. ...   Sep 29 2010, 08:23 PM
Eric_Shea   OK... 98% Just saying... T-Struts, pinch or pin a...   Sep 30 2010, 09:14 AM
ArtechnikA   Just saying... T-Struts, pinch or pin are the per...   Sep 30 2010, 06:51 PM
Eric_Shea   Don't worry Jim... that's just our Cap...   Sep 30 2010, 06:33 PM
jk76.914   Don't worry Jim... that's just our Cap...   Sep 30 2010, 06:44 PM
Eric_Shea   :rotfl: Let me know how that turns out. ...   Sep 30 2010, 06:49 PM
Eric_Shea   The struts that were on 99.9% of the T's yes.....   Sep 30 2010, 08:03 PM
jk76.914   Getting this together finally. Painted the struts...   Jun 23 2011, 06:51 PM
ArtechnikA   Is there anything unique about this washer? I wou...   Jun 24 2011, 06:41 AM
jk76.914   Is there anything unique about this washer? I wo...   Jun 25 2011, 08:05 AM
jk76.914   Painted John Deere green. I coated it with Ben Mo...   Jun 23 2011, 07:00 PM
MoveQik   You can also see the stickers Bilstein sent me w...   Jun 23 2011, 10:20 PM
jk76.914   Starting point. Those 5 lug adapters have been on...   Jun 23 2011, 07:06 PM
Eric_Shea   Nice job on the struts... nine months oughts be en...   Jun 23 2011, 10:07 PM
FourBlades   I never knew about the wrench and never got one in...   Jun 24 2011, 06:50 AM
jk76.914   I never knew about the wrench and never got one i...   Jun 25 2011, 07:52 AM
jk76.914   Just finished a fit check of most parts. Everythi...   Jun 26 2011, 06:46 PM
jk76.914   bump. :bump:   Jun 26 2011, 06:47 PM
jk76.914   (shrinking pics to make my posts more readable) ...   Jun 26 2011, 06:48 PM
jk76.914   Thinking about it, maybe the struts are different ...   Jun 26 2011, 06:51 PM
jk76.914   Oops. Forgot to mention. Those plated dust shiel...   Jun 26 2011, 06:57 PM
ArtechnikA   Couldn't say for sure, since I've never do...   Jun 26 2011, 07:56 PM
Eric_Shea   Thanks Jim... Happy to help. Just bend the shield...   Jun 26 2011, 10:39 PM
jk76.914   Got the driver's side strut out. The castle n...   Jul 2 2011, 01:36 PM
ArtechnikA   I got tired of the sliding and just put some ...   Jul 2 2011, 01:45 PM
jk76.914   Well I'm finally getting closer. I replaced t...   Jul 21 2011, 04:33 AM
ArtechnikA   Regarding brakes- The brakes seem to be bled, no...   Jul 21 2011, 04:39 AM
jk76.914   ArtechnikA- Thanks for the comments, that may be ...   Jul 21 2011, 05:05 AM
ArtechnikA   The most effective combination was 5-7 psi at the...   Jul 21 2011, 05:17 AM
Eric_Shea   Leave it like it is and bed your pads using the pr...   Jul 21 2011, 09:12 AM
jk76.914   Leave it like it is and bed your pads using the p...   Jul 22 2011, 04:06 AM
jk76.914   OK, I got it. As Eric indicated, the new rubber d...   Jul 22 2011, 08:27 PM
jk76.914   Getting there. Devil's in the details I s...   Aug 7 2011, 06:42 PM
jk76.914   Built a big T-square to set toe. Before I started...   Aug 7 2011, 07:40 PM
jk76.914   Took it for alignment on Thursday morning. They c...   Aug 8 2011, 04:17 AM


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