Mike951

Looking for (2) 7mm spacers. Let me know what you got and how much $$.

Thanks
Mike

Lemming

I'll likely have some for sale after next weekend, need to make sure that my wider ones work first. PM me if you are interested. Will also have some longer studs available, which you will need it you add spacers.

thirdgenbird

10-4

dont skimp, add the longer studs

Mike951

I need longer studs just for 7mm spacers...i thought you only needed them for a large spacer? It's a street car if that makes any difference....

thirdgenbird

you decide:

7mm spacers + stock studs:


7mm spacers + 52mm 911 studs:


(pardon the dirt)

smlporsche

Even the last picture is inadequate...

The threads should exted past the nut otherwise it is very dangerous...

smlporsche

Tim-

PM sent

thirdgenbird

untrue, what good do threads to PAST a nut...

there is a half a thread on the stud sticking out past the nuts last thread (the nuts not threaded all the way to the end of the bore) i can catch my fingernail on the studs threads

i worked in the fastener industry and now work in engineering. as long as you are dealing with like materials and grades, any more thread engagement than the thickness of the bolt (stud) is a waste of your time. in most situations, once your thread engagement reaches half the thickness of the bolt, the bolt will snap BEFORE the threads pull out.

my setup is considerably safer than stock. i have the EXACT about on engagement but am using a steel nut instead of the factory alloy. my studs will shear LONG before the nut fails

thirdgenbird

for example:

a 1in hex nut only has a thickness of 55/64

my thread engagement surpasses even that if the diameter of the stud.


there is a huge formula for all of this, i'm just dumbing it down.

you also have to remember that the coefficient between the tire and concrete must exceed the pullout strength of all FIVE lug nuts for there to be a problem...

Want to be

I believe the industry standard is 1.5 (times) diameter of the stud should advise you what length your stud needs to be.

good luck

jpc

thirdgenbird

1.5 is the engagement if the actual threads in the thread pitch. there is a formula that involves fastener diameter, thread pitch, and the thickness of the nut. its NOT that the nut has to be 1.5 times as thick as the fastener.

if it was 1.5 then a 1in nut would be 1.5in thick NOT 55/64ths like industry standard.

there is no good luck about it, i have the SAME threads engaged than my car did stock. i counted the turns. (and i'm using steel as apposed to stock alloy)

do the math is you dont believe me

thirdgenbird

and as i already stated, i can feel the last thread if the stud (the nut is beveled) the stud could be a foot longer and i still would not have more engagement.

smlporsche

Yes I can easily do the math but the point of fact is you will not pass any tech inspection as all threads on the nut need to be fully engaged.
And yes I use steel nuts as well but that has more to do with the disparity in heat expansion between aluminum and steel which will result in the nuts working loose on the track...

thirdgenbird

the threads are fully engaged. i can feel the last tread on the stud. this is also a street setup, my track wheels do not need spacers and i have (calaper measured) 7mm of thread sticking out.