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Old Jan 5, 2021 | 05:19 PM
  #16  
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Originally Posted by jwbavalon
Hi, I didn't know that the bolts had not only a inside hex but also a bore hole.

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Old Jan 5, 2021 | 06:19 PM
  #17  
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Heh. I'd thought that borehole was a removal-assister (for drilling out stripped socket heads.)
Guess it works both ways -- just better at one.
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Old Jan 5, 2021 | 07:37 PM
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Originally Posted by JohnK964
I went the hardware store route. I discovered the head of the hardware store bolt was taller than the factory bolt. This caused interference with the seat going all the way back and I suppose forward. I got new factory ones from Pelican
I used 12.9 grade button head allen bolts. The low profile allows the seat to glide over.
The stock bolts strip out easily, which is why I made the switch.
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Old Jan 6, 2021 | 03:05 PM
  #19  
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I also took the torx option to stop them being rounded off by idiots



Stainless steel low profile torx



These are all the measurements you need, all in mm and taken from an original Porsche seat bolt, oh and the thread pitch is 1.25


Last edited by 964George; Jan 6, 2021 at 03:07 PM.
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Old Jan 6, 2021 | 03:08 PM
  #20  
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Good thinking. I have one on each seat that are stripped. Trying to put in new seats. Gonna have to get creative!
Originally Posted by 964George
I also took the torx option to stop them being rounded off by idiots

Stainless steel low profile torx

These are all the measurements you need, all in mm and taken from an original Porsche seat bolt, oh and the thread pitch is 1.25

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Old Jan 6, 2021 | 06:06 PM
  #21  
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Originally Posted by 2000m2
Good thinking. I have one on each seat that are stripped. Trying to put in new seats. Gonna have to get creative!
I hear ya, a few of mine were stripped and the rest weren’t much better...
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Old Jan 6, 2021 | 07:30 PM
  #22  
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Originally Posted by 2000m2
Good thinking. I have one on each seat that are stripped. Trying to put in new seats. Gonna have to get creative!
Chisel (catch edge and try to knock it in reverse) or a reverse drill bit. It SUCKS to get these out.

I have a couple boxes of grade 12 bolts with proper allen heads I got from McMaster.... those short head bolts suck.
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Old Jan 6, 2021 | 07:52 PM
  #23  
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Originally Posted by Spyerx
Chisel (catch edge and try to knock it in reverse) or a reverse drill bit. It SUCKS to get these out.

I have a couple boxes of grade 12 bolts with proper allen heads I got from McMaster.... those short head bolts suck.
Yup. McMaster-Carr SKU# 91290A426 M8 X 1.25mm thread. 20 mm long
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Old Jan 6, 2021 | 08:42 PM
  #24  
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Originally Posted by 2000m2
Good thinking. I have one on each seat that are stripped. Trying to put in new seats. Gonna have to get creative!
Something like these extractors work great for getting stripped or broken screws out. I haven’t used this exact one, but mine is identical.

Amazon Amazon
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Old Jan 6, 2021 | 09:37 PM
  #25  
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Use the correct tool, hex according to DIN 6911 and the bolts are fine.
I don’t recall the hex size (I have a complete set) but this item available on Amazon will give you the right idea.
Amazon Amazon
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Old Jan 6, 2021 | 11:12 PM
  #26  
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Originally Posted by Sirenty
Something like these extractors work great for getting stripped or broken screws out. I haven’t used this exact one, but mine is identical.

https://www.amazon.com/dp/B07GZ17QD9..._FGL9Fb6D1A7NM
Might be challenging to get a drill in there, but worth a shot and better option than anything else I have.

Originally Posted by 540964
Use the correct tool, hex according to DIN 6911 and the bolts are fine.
I don’t recall the hex size (I have a complete set) but this item available on Amazon will give you the right idea.
https://www.amazon.com/GEDORE-634360...strial&sr=1-12
Thank you! Ordered & ordered.

Last edited by 2000m2; Jan 6, 2021 at 11:14 PM.
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Old Jan 7, 2021 | 01:01 AM
  #27  
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Also it should be noted that for the stock seat bolts you must use the washer due to the fact of the threads do not go all the way to the head. If you do not the will shift slightly in use.
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Old Jan 8, 2021 | 08:55 PM
  #28  
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Another source
https://www.kctoolco.com/l-keys/?brand=41
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Old Jan 22, 2021 | 10:16 PM
  #29  
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Thanks for the tips!
I had to drill out one bolt. Most were straightforward, a few I had to get creative (torx head & rubber mallet!). The bolt & washer kit from Classic 9 worked great, just be careful when installing so as not to deform the heads. I’d definitely get a different type of bolt if I were swapping out seats regularly.
Anyway, I got my new seats installed this evening. Funny things one learns in the process, like the drivers seat was on some extension rails that allowed for the seat to be placed further back. A previous owner must have been tall. I’m about 5’11”, so standard mounting points are fine and saves me a fraction in seat height. I even got some loose change and someone’s old earring out from under the old seats. I also removed the amplifier under the passenger seat that wasn’t connected.



Last edited by 2000m2; Jan 26, 2021 at 12:02 AM.
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Old Jan 22, 2021 | 10:18 PM
  #30  
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Got any pictures of these brackets that let the seat go back father might want to buy them if you’d sell
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