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L19s... Do you re torque after heat cycle?

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Old Dec 2, 2013, 12:48 AM
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L19s... Do you re torque after heat cycle?
I think I might of lifted my head. I have 2k miles on a new build with brand new arp l19s. I ran car 3 different times on 34+ psi and the last time lifteing the head I'm pretty sure. Do these head studs require being re torqued after track runs or a lot if boost after install???
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Old Dec 2, 2013, 01:24 AM
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I didn't re-torque mine. Mine are torqued to 105 ft/lbs. I'm also aiming for high 40 psi in the future.
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Old Dec 2, 2013, 01:40 AM
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Furthermore, I feel that re-torquing headstuds ruins the seal that is already on the head gasket.
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Old Dec 2, 2013, 05:17 AM
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Originally Posted by ch53avitech
Furthermore, I feel that re-torquing headstuds ruins the seal that is already on the head gasket.

I heard now from a few ppl that they should be re-torqued after a lot of boost and a break in heat cycle. im going to call arp direct today and see what they have to say
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Old Dec 2, 2013, 05:22 AM
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Hmmm let me know what they say
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Old Dec 2, 2013, 05:33 AM
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I retorqued the MAP H11 headstuds after a few days of running. Let the car cool overnight and using the OEM torque sequence I backed off the nut ~1/4 turn and then retorqued before moving to the next in sequence. I did notice a few nuts accepted more movement to reach full torque.
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Old Dec 2, 2013, 06:49 AM
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Originally Posted by 240Z TwinTurbo
I retorqued the MAP H11 headstuds after a few days of running. Let the car cool overnight and using the OEM torque sequence I backed off the nut ~1/4 turn and then retorqued before moving to the next in sequence. I did notice a few nuts accepted more movement to reach full torque.
Agree.
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Old Dec 2, 2013, 11:19 AM
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I did my l19s after a drive and heat cycle. Torqued to 105. I did notice that there was a difference in a few of the nuts. Let it cool to room temperature.
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Old Dec 2, 2013, 02:46 PM
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Always re-torque them. Especially if you are running 35lbs+ of boost.
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Old Dec 2, 2013, 02:48 PM
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Originally Posted by way2qik
Always re-torque them. Especially if you are running 35lbs+ of boost.
This /\/\
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Old Dec 2, 2013, 04:12 PM
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I torqued mine to 115 as Buschur recommended. I checked them after a bit of driving and heat cycles and non of them moved at all.

Can never hurt to check.
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Old Dec 2, 2013, 09:46 PM
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Some do, some don't really. If you'd like that reassurance then by all means, it definitely wouldn't hurt. I didn't re-torque mine and I'm doing fine. To each their own.
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Old Dec 2, 2013, 09:56 PM
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I don't agree that you must loosen and retorque them, but definitely check them...
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Old Dec 2, 2013, 10:29 PM
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Thanks for all the info guys I really appreciate it. I will call arp directly in the morning as I didn't get around to it today. I will let you guys know what they say
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Old Dec 2, 2013, 10:31 PM
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Btw I was running 37 psi fp black
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