Wednesday, August 22, 2012

80 mm studs

sometimes people ask me why it takes so many hours to restore a 911!

i have never kept track of my time & hours because to me its still my hobby,

once you start counting hours & dollars then it becomes a job :)

that is also the reason why i am NOT BUILDING CUSTOMER CARS!

 

here  is a great example of one of the many jobs that ends up taking many

hours but looks like it takes a few minutes.

i have been using 72MM studs on a lot of my recent builds as i LOVE the racy look of long studs & open ended Lug Nuts..


so for my current labor of LOVE my 72STR I decided i would go with a slightly longer stud.........

100MM was too long so i settled on 80MM

 

 all was good up to this point,

it wasn.t until we pressed the 80 mm studs into the rear hub that we realised

they were almost 1 " short on the thread  comapared to the 72 mm studs.

not wanting any fender -wheel rubbing issues that may have resulted in the addition of spaces....

i decded to cut the treads down almost 1 " to my desired depth..


let the fun begin



80 mm studs in the rear hub installed in a bench vise..


i installed a rear rotor for the desired thread depth & went to work.

a bit of TAP MAGIC OIL & 14 mm cutting die & off i went,,



i made sure not to cross threads at the start & after every full turn i reveresd

the die to avoid metal shard clogging..





after the first 10 were done .they were pressed out of the hubs & the next 10 were installed & cut .

 some TIME LATER all 20 were done  & pressed free from the hubs.....

 

now i realized that i would need to coat them to prevent "rusting" so i decided to send them out for black zinc plating..

BAG O STUDS....RE THREADED ......

 

another part of the porsche slippery slope..

 

NO DOUBT IT WILL BE WORTH IT IN THE END :)

 

Cheers

 

magnus

5 comments:

  1. Greetings from the SF Bay area. Thanks for sharing how you did this. -- Richard (9JUICHI)

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  2. Tidy work indeed, ausgezeichnet !!!

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  3. Are you shure the original bolts also had cutted threads??

    If they had rolled threads, you now have a way weaker bolt, just for the look.

    ReplyDelete
    Replies
    1. HugePanic,

      My thoughts as well on the studs, however since almost 3 years have passed and we have not heard of him stuffing a car due to a wheel flying off, all is well...(found blog while doing a research on installing longer studs on my 911 front hubs)

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