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Old 06-19-2021, 08:28 AM   #43
Envious_Ivy1LE
 
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Quote:
Originally Posted by JeromeS13 View Post
FYI, PTC 97419 studs work too. I ordered them from Rock Auto $1.10 each (much cheaper than Dorman or ARP). They're ~ 15mm longer overall, but have ~24mm more thread engagement, due to being threaded longer.

https://www.rockauto.com/en/moreinfo...841348&jsn=254
does anyone know if these will slot in without removing the caliper and rotor? I'm trying to do this right now and can't seem to find a position to get it to come through. it might be slightly too long
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Old 06-21-2021, 10:06 AM   #44
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to answer my own question for anyone using the PTC 97419, they won't slot in without removing the caliper and rotor, not without modification. Looks like the ARP studs have a flat section in OPs guide and these don't. if you were to make a flat section on the head similar to the ARP then it might be able to slot in and not get caught
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Old 07-03-2021, 07:05 PM   #45
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Quote:
Originally Posted by Envious_Ivy1LE View Post
to answer my own question for anyone using the PTC 97419, they won't slot in without removing the caliper and rotor, not without modification. Looks like the ARP studs have a flat section in OPs guide and these don't. if you were to make a flat section on the head similar to the ARP then it might be able to slot in and not get caught
Nope! You can get 1/2" longer studs in but not 1". It's quick and easy to take the caliper and rotor off, about the same amount of work as grinding the studs anyways.

I usually spring for ARP, especially since I'll be using 26mm spacers but they are out of stock. I used these Dorman studs, worked fine and costs $25. PTC are prolly fine and even cheaper. Dorman are ~5mm longer and I recognize the brand.

https://smile.amazon.com/dp/B0033YJC...roduct_details
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Old 07-29-2021, 03:44 PM   #46
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I agree with longer studs for 5mm spacers (I tested some and only got about 6.5 turns on OEM SLE wheels).

But is it OK to use stock studs w/3mm spacers? These are required for inside front clearance with some MRR wheels. I am estimating it would get just under 8 turns which I have read on here is sufficient.
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Old 07-29-2021, 04:23 PM   #47
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Originally Posted by CRBWS6 View Post
I agree with longer studs for 5mm spacers (I tested some and only got about 6.5 turns on OEM SLE wheels).

But is it OK to use stock studs w/3mm spacers (required for inside front clearance with some MRR wheels)? I am estimating there it would get just under 8 turns which I have read on here is sufficient.
Sounds about right, I think you could use 5mm but it's borderline, 3mm should be ok.
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Old 07-29-2021, 06:11 PM   #48
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There's different schools of thought on minimum thread engagement. One is you want the thread engagement to be equal to the diameter of the bolt. So for our studs which are 14 x 1.5mm you would need 9 turns minimum. I can't remember what stock was when I checked before I changed studs.

14 \ 1.5 = 9.3
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Old 07-29-2021, 06:34 PM   #49
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Originally Posted by carguy55 View Post
There's different schools of thought on minimum thread engagement. One is you want the thread engagement to be equal to the diameter of the bolt. So for our studs which are 14 x 1.5mm you would need 9 turns minimum. I can't remember what stock was when I checked before I changed studs.

14 \ 1.5 = 9.3
Stock wheels of all flavors at stock torque ends up being 14-15mm depending on tolerance stack. As you and others have seen, be sure to check aftermarket wheels. My Apex EC7's and SM10's both lost at least 2mm w/o a spacer.
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Old 07-31-2021, 06:34 AM   #50
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Originally Posted by RUQWIKR View Post
Stock wheels of all flavors at stock torque ends up being 14-15mm depending on tolerance stack. As you and others have seen, be sure to check aftermarket wheels. My Apex EC7's and SM10's both lost at least 2mm w/o a spacer.
Thanks to your tip about minimum thread engagement I checked what it was on the rear studs with my Apex wheels and changed the rears to longer studs
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Old 09-04-2021, 06:02 PM   #51
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Quote:
Originally Posted by DaveC113 View Post
Nope! You can get 1/2" longer studs in but not 1". It's quick and easy to take the caliper and rotor off, about the same amount of work as grinding the studs anyways.

I usually spring for ARP, especially since I'll be using 26mm spacers but they are out of stock. I used these Dorman studs, worked fine and costs $25. PTC are prolly fine and even cheaper. Dorman are ~5mm longer and I recognize the brand.

https://smile.amazon.com/dp/B0033YJC...roduct_details
To clarify - do the Dorman 610-530 (78mm Length) install w/o removing the brakes?
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Old 09-09-2021, 01:38 PM   #52
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I was a little concerned with doing the rears, but watching the video it doesn't look too bad with pneumatic tools.

Now to go measure the ZL1 stud OD to see if they'll fit inside my SLC wheel holes.
The SLC uses M12x1.5 studs, but the opening on the wheel is larger than 14mm so it's feasible.
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