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HELP! Head studs...
- Thread starter Kooldino
- Start date
funktownp5
Member
- :
- 02 Mazda P5 Turbo
I think that the actual studs only need to be torqued to maybe 5ft/lbs. If you over
thighten you risk stripping out the threads in the block.
thighten you risk stripping out the threads in the block.
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- MP5T / 944
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Isn't 68 a bit high. Where did you get this info?
Isn't 68 a bit high. Where did you get this info?
Opps! Sorry the above was for the 10mm studs. Here is a link to the tourqe specs for the studs. It is on the bottom of the page. And just to let you know I used ARP moly lube and tourqed mine to 71 ft/lbs. Sorry about that.
http://www.arp-bolts.com/pages/tech/images/fasttorq.pdf
Dave
http://www.arp-bolts.com/pages/tech/images/fasttorq.pdf
Dave
- :
- Hemi Ram, 71 Plymth Scamp, 71 Plymth Duster 340, 69 Dart 340/4sp
This is for headbolts, not sure if studs are the same.
- Tightening torque
- 17.522.5 Nm {1.792.29 kgfm, 13.016.5 ftlbf}
- Put a paint mark on each bolt head. Using the marks as a reference, tighten the bolts by turning each 8595 in the sequence shown.
- Further tighten each bolt by turning another 8595 in the sequence shown
the head studs are different to torque than the head bolts.
That pdf chart is giving me a headache. I'm unclear as to whether Its displayed in ft/lbs or what, especially considering that some of the "torque specs" in that chart are as high as 303. No way is that ft/lbs.
And wtf is the preload all about?
That pdf chart is giving me a headache. I'm unclear as to whether Its displayed in ft/lbs or what, especially considering that some of the "torque specs" in that chart are as high as 303. No way is that ft/lbs.
And wtf is the preload all about?
quoted from the top of the page
the stock bolts are torque to yield for a reason. set these as if you were instazlling a new set of OEM head bolts.
so inother wors, install them to the torque that is recomended by Mazda.Listed are the recommended torque values for most ARP fasteners. Recommended torque is equal to 75% of the fastener's yield strength. THE TORQUE VALUES REPRESENTED HERE ARE INTENDED TO BE FOR GENERAL INFORMATION, NOT FOR SPECIFIC INSTALLATIONS! In special instances, where supplied instructions deviate from the torque values recommended here, always follw the intructions.
the stock bolts are torque to yield for a reason. set these as if you were instazlling a new set of OEM head bolts.
Last edited:
Right. But if that's the case, then for a 5/8" stud, it can take as much as 303 ft/lbs to properly torque. That's total BS...that's what scares me here.RyanJayG said:quoted from the top of the page
so inother wors, install them to the torque that is recomended by Mazda.
the stock bolts are torque to yield for a reason. set these as if you were instazlling a new set of OEM head bolts.
well, what you have to realise is that those ratings are just 75% of yieldKooldino said:Right. But if that's the case, then for a 5/8" stud, it can take as much as 303 ft/lbs to properly torque. That's total BS...that's what scares me here.
also, that is WITH an anti sieze thread lubricant, which GREATLY increases the amount of torque you can apply. we do this all the time where I work, and we install bolts to rediculously high torque. such as some 1.5in fine thread bolts we torque to over 4000lb-ft
- :
- MP5T / 944
No, I would ask BEAU, He sells them and has them on his car...
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