Depinning Bosch connectors, and a surprisingly effective el-cheapo tool...
#16
Rennlist Member
Thread Starter
Jeff's illustration is excellent! Very well illustrates how it all works.
Dave, you are quite welcome!
You are very welcome! I am trying to give back to the forum. It has been a GREAT help to me in dealing with the Red Witch.
#18
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Thread Starter
I could tell you, but I would then have to send the zombies after you.
If it makes you feel any better, I am making an absolute mess of reinstalling the B1 brake band and K1 clutch drum in the A28.07 automatic right now...
If it makes you feel any better, I am making an absolute mess of reinstalling the B1 brake band and K1 clutch drum in the A28.07 automatic right now...
#21
Rennlist Member
Seth,
Terrific write-up, many thanks!
I agree completely on your assessment of the terminals supplied with the Bosch connectors (the ones you called "New" style), without the extra spring they are not reliable and will leave you stranded. Springs and electrical contacts have different requirements, and are best made from different metals.
However the OEM-style (with the separate spring) are readily available from --- wait for it -- Porsche. Highly recommended.
This may be helpful:
Cheers,
Terrific write-up, many thanks!
I agree completely on your assessment of the terminals supplied with the Bosch connectors (the ones you called "New" style), without the extra spring they are not reliable and will leave you stranded. Springs and electrical contacts have different requirements, and are best made from different metals.
However the OEM-style (with the separate spring) are readily available from --- wait for it -- Porsche. Highly recommended.
This may be helpful:
Cheers,
#22
Rennlist Member
Thread Starter
Tool key set is still good to have on hand.
Jon, you are very much welcome! I hope it takes some of the confusion out of dealing with the connectors under the hood.
#23
Rennlist Member
Thread Starter
Seth,
Terrific write-up, many thanks!
I agree completely on your assessment of the terminals supplied with the Bosch connectors (the ones you called "New" style), without the extra spring they are not reliable and will leave you stranded. Springs and electrical contacts have different requirements, and are best made from different metals.
However the OEM-style (with the separate spring) are readily available from --- wait for it -- Porsche. Highly recommended.
This may be helpful:
Cheers,
Terrific write-up, many thanks!
I agree completely on your assessment of the terminals supplied with the Bosch connectors (the ones you called "New" style), without the extra spring they are not reliable and will leave you stranded. Springs and electrical contacts have different requirements, and are best made from different metals.
However the OEM-style (with the separate spring) are readily available from --- wait for it -- Porsche. Highly recommended.
This may be helpful:
Cheers,
WHooHOOOOO!!!
DING DING DING!!!
Jim, thank you! That makes me feel much better. I will add those to my next order. Very good to have on hand. As well, I will edit my original post with this information.
This, gentlemen, is how you do it! One person posts an idea, and everyone else chimes in with additional information that makes it better. Damned glad to be part of this forum.
#24
Rennlist Member
Excellent write yp Seth - another keeper! Thanks for continuing to move the knowledge pool further!
Hacker - this should be copied in the 928 DIY section too!
Hacker - this should be copied in the 928 DIY section too!
#25
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Join Date: Aug 2014
Location: Adirondack Mountains, New York
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Thanks, Seth. I think we'll all be fussing more and more with the damn wires in our cars.
Long ago, I came perilously close to working for Brush-Wellman, producer of beryllium alloys in Cleveland. During the interview, I learned all about berylliosis, but also about their biggest product: so-called beryllium copper, which has just a little Be in it to make it age-hardenable but retain the conductivity of copper (unlike, say, adding lots of zinc to make brass). Not considered dangerous. I just read that it makes a good seat for titanium valves, but its main use is for springy electrical contacts.
Long ago, I came perilously close to working for Brush-Wellman, producer of beryllium alloys in Cleveland. During the interview, I learned all about berylliosis, but also about their biggest product: so-called beryllium copper, which has just a little Be in it to make it age-hardenable but retain the conductivity of copper (unlike, say, adding lots of zinc to make brass). Not considered dangerous. I just read that it makes a good seat for titanium valves, but its main use is for springy electrical contacts.
#26
Rennlist Member
Thread Starter
Thanks, Seth. I think we'll all be fussing more and more with the damn wires in our cars.
Long ago, I came perilously close to working for Brush-Wellman, producer of beryllium alloys in Cleveland. During the interview, I learned all about berylliosis, but also about their biggest product: so-called beryllium copper, which has just a little Be in it to make it age-hardenable but retain the conductivity of copper (unlike, say, adding lots of zinc to make brass). Not considered dangerous. I just read that it makes a good seat for titanium valves, but its main use is for springy electrical contacts.
Long ago, I came perilously close to working for Brush-Wellman, producer of beryllium alloys in Cleveland. During the interview, I learned all about berylliosis, but also about their biggest product: so-called beryllium copper, which has just a little Be in it to make it age-hardenable but retain the conductivity of copper (unlike, say, adding lots of zinc to make brass). Not considered dangerous. I just read that it makes a good seat for titanium valves, but its main use is for springy electrical contacts.
Because I am a 'Curious George', I googled "berylliosis". YIKES!
#27
Hi Jeff!
I must respectfully disagree with you on a point, though. I am led to believe the adhesive lined heat shrink is OEM from Porsche for the 928, or whomever they subcontracted the harnesses too. Every connector under the hood of my 928 had this on it. I have spoken to, and read posts from other 928'ers who have found the same thing. I don't know how much this matters, but my 1986.5 has LH-Jet instead of L-Jet.
I must respectfully disagree with you on a point, though. I am led to believe the adhesive lined heat shrink is OEM from Porsche for the 928, or whomever they subcontracted the harnesses too. Every connector under the hood of my 928 had this on it. I have spoken to, and read posts from other 928'ers who have found the same thing. I don't know how much this matters, but my 1986.5 has LH-Jet instead of L-Jet.
#28
Jeffs correct. All of the pre-85 harnesses I have here are clear of that. On the post 85 harnesses they have that crap. It's not really a heat shrink as its more of a hardened goo that they filled all the connectors with.
#29
Rennlist Member
Hey Seth!
Yes i I did all 8. I cut the old ones off, slid heat shrink over, stripped the wires, fluxed and soldered, then slid the heat shrink up and viola!
quite happy with how it turned out. Not perfect, but pretty darn close. Still running good. Yes, the key set is great to have around.
Yes i I did all 8. I cut the old ones off, slid heat shrink over, stripped the wires, fluxed and soldered, then slid the heat shrink up and viola!
quite happy with how it turned out. Not perfect, but pretty darn close. Still running good. Yes, the key set is great to have around.