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Transmission Bolts


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:help: I am looking at replacing clutch on my 99 996. All bolts are same size with the exception of the bottom one on the bell housing? it appears to be a torx with more points that the standard torx. Any assistance with size or type of socket that I may be looking for is greatly appreciated.

Edited by jskd22
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Hmm... the parts list says they are all the same.

Sounds like I may have issues removing this bolt... Its nice and snug, I just tried to loosen the bolt and it did not feel like it was breaking loose. Its hard to believe someone would have worked on a Porsche with less than 22k and replaced one bolt on a transmission with a 12 point T50 Torx.

I purchased my 996 with 22k when it was 4 yrs old. I asked the dealer if they would provide any history on it, but my request declined. It now has 38k and a burnt clutch, so I took on a DIY project which has proven to be a pain with this bolt.

Loren, thanks for your quick response and assistance.

Edited by jskd22
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Hmm... the parts list says they are all the same.

Sounds like I may have issues removing this bolt... Its nice and snug, I just tried to loosen the bolt and it did not feel like it was breaking loose. I fear it will strip. Any suggestions and ideas on removing the bolt or the type of hex I may be looking at? It seems to be a 12 point style hex.

I purchased my 996 with 22k when it was 4 yrs old. I asked the dealer if they would provide any history on it, but my request declined. It now has 42k and a burnt clutch, so I took on a DIY project which has proven to be a pain with this odd bolt.

dont strip it. Its a wierd Triple square socket. Hazet makes it and in the dealer we all cut the tip off and would weld it to a open box wrench so it would fit just perfect. Go to a dealer a make friends with a tech who is willing to help you out. Otherwise go to Samstag sales on the web and you can get one of these sockets. ;)

vizcarra44

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:renntech:

Thanks for the great information, I have done some searching and found you can actually purchase the triple square bits (serrated wrench) at NAPA Auto Parts for just around $6.00 in sizes of 8mm, 10mm and 12mm. It appears these bolts are used on Volkswagen axle and flywheel's. How it wound up on my Porsche is beyond me.

Edited by jskd22
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That might be a set like the one on the left, just the bits. Need to put a socket on the end of the bits. That is my old set which I bought 20 years ago because my Fiat had triple square bolts on the cv joints.

If you look at your door striker and door stay. triple square is also used there.

Black bits on the right are torx which have 6 points.

post-4-1191866666_thumb.jpg

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The Boxster is the same way. There is one bell housing bolt that is a triple square, sometimes called XZN. I had an old set of just the bits, and just bought this set. They have 12 points.

I have this same set sold by MacTools and it has saved me countless times. Highly recommended.

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