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-   Engine Performance (https://www.miataturbo.net/engine-performance-56/)
-   -   ARP hear stud question (https://www.miataturbo.net/engine-performance-56/arp-hear-stud-question-80435/)

jandjracing_58 08-15-2014 01:18 PM

First off, please don't give me shit about repeat threads, it takes 10 second to reply this post.

I know what I'm going to torque my head stud nuts to.

I'm looking for specs on what to torque the stud into the block.

Much obliged

glade 08-15-2014 01:58 PM

I'd say 190-200 ftlb....since it takes like ten seconds

pdexta 08-15-2014 02:30 PM

I believe "finger tight" is the spec you're looking for. There's a allen key fitting on the end of the stud, I always just snugged it down with that, but my shit always blows up so maybe don't do that.

soviet 08-15-2014 02:33 PM

a few kilograms

99Racer 08-15-2014 02:41 PM

go to the product source...

ARP | The Official Web Site

williams805 08-15-2014 03:25 PM

Finger tight.
There is a video somewhere with an ARP rep saying why exactly.
Basically don't want and side load on the stud. Just a staight pull. By only going finger tight in the block the stud still has fredom to move around allowing the nut and washer to determin the "straight pull".
Something like that. :2cents:

jandjracing_58 08-15-2014 05:10 PM


Originally Posted by pdexta (Post 1157777)
I believe "finger tight" is the spec you're looking for. There's a allen key fitting on the end of the stud, I always just snugged it down with that, but my shit always blows up so maybe don't do that.

Your were correct, thank you. But I'm wondering why they want 80ft lbs? I'm not going past 60, nope nope nope

jandjracing_58 08-15-2014 05:11 PM


Originally Posted by 99Racer (Post 1157790)
go to the product source...

ARP | The Official Web Site

Thanks for the link

concealer404 08-15-2014 05:25 PM


Originally Posted by jandjracing_58 (Post 1157877)
Your were correct, thank you. But I'm wondering why they want 80ft lbs? I'm not going past 60, nope nope nope

You're going to use an ARP product because they're superior, but choose to ignore their instructions?


Curious choice.

jandjracing_58 08-15-2014 06:12 PM


Originally Posted by concealer404 (Post 1157887)

You're going to use an ARP product because they're superior, but choose to ignore their instructions?

Curious choice.

Not so much ignore just weary of cracking my head, I did it to my 99 headed following those instructions. I think this time I'll split from factory to the ARP suggestion and just do 60

concealer404 08-15-2014 06:24 PM


Originally Posted by jandjracing_58 (Post 1157903)
Not so much ignore just weary of cracking my head, I did it to my 99 headed following those instructions. I think this time I'll split from factory to the ARP suggestion and just do 60

There's no way possible that torquing those studs to ARP's specs in the proper manner will cause your head to crack.

On the contrary, torquing ARPs to factory specs can and will probably make your head gasket leak.


If you're going to use factory torque specs, then use factory hardware.

bbundy 08-15-2014 06:49 PM


Originally Posted by concealer404 (Post 1157910)
There's no way possible that torquing those studs to ARP's specs in the proper manner will cause your head to crack.

On the contrary, torquing ARPs to factory specs can and will probably make your head gasket leak.


If you're going to use factory torque specs, then use factory hardware.

ARP torque spec of 80 for a 7/16 bolt with moly is just rediculus. and I can say it can and did crack a head. The Miata aluminum head under their tiny washers squishes with permanent deformation with that much clamp load. 20 to 30% increase in effective clamp load over stock is probably Ok more than double is silly.

concealer404 08-15-2014 07:04 PM

Weird. I took the set on the f2 to 100ftlbs, miata to 80. No issues.

asmasm 08-15-2014 07:15 PM

This thread:
https://www.miataturbo.net/engine-pe...e-miata-54746/

18psi 08-15-2014 07:21 PM

it takes 10 seconds to search

you just think you're special

jandjracing_58 08-15-2014 08:01 PM

Wow, I might as well close my eyes and turn the wrench based on all this confusion. There's too much bullshit on most of these threads.

I'll go 70 and just trust my intuition

EO2K 08-15-2014 08:17 PM

Torque spec? ALLOFIT

18psi 08-15-2014 08:26 PM


Originally Posted by jandjracing_58 (Post 1157944)
Wow, I might as well close my eyes and turn the wrench based on all this confusion. There's too much bullshit on most of these threads.

I'll go 70 and just trust my intuition

so let me get this straight:

-you ask a question that has been discussed and easily found
-you tell everyone to spoon feed you the info cause you're too special to adhere to the rules everyone else does
-you call people out
-you conclude the thread with calling everyone a bs'er

Congrats. I don't think you coulda been more of a douche if you actually tried.

18psi 08-15-2014 08:27 PM

By the way: to all those that spoon fed him - this is the direct result of your spoon feeding, self entitled douchenozzles that will never actually learn

williams805 08-15-2014 10:14 PM

I did 78 ft lbs. I thought I read from either Emilio or Andrew about not going over 85 or something like that. Don't quote me on that but it's what I recall. I figured that was close enough to 80. + The lube on thread and nut and washer I figured that was plenty.


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