Porting and Polishing Experience
#61
04-29-2018, 07:50 AM
I went with the ARP studs and recommend them, however, ARP listed only 70 ft pounds of torque for our 4.6 motors, whereas the Atlantic youtube video used 85 ft pounds on them.
i used their precision torque grease and installed them at 81 ft pounds. My gut feel was that 85 ft pounds was too close to the limits of the aluminum block threads.
No problems at 81. JB Weld on a head?! Ummm...
i used their precision torque grease and installed them at 81 ft pounds. My gut feel was that 85 ft pounds was too close to the limits of the aluminum block threads.
No problems at 81. JB Weld on a head?! Ummm...
What is your thought process going to 81? L8 said 80, AB 85 and ARP 70. I’m leaning towards ARP’s 70
#62
04-29-2018, 07:51 AM
#65
04-29-2018, 12:57 PM
Great thought, but I looked them up and unfortunately I don’t have the facilities to fab them in.
Last edited by CollieRover; 04-29-2018 at 12:59 PM.
#66
04-29-2018, 07:57 PM
Recovery Vehicle
As in, I didn't have the guts to go to 85 ft pounds, just bein' honest.
#67
04-29-2018, 08:04 PM
Oh, nothing scientific! I was probably thinking "75 ft pounds is factory for head bolts" and that "85 ft pounds that Atlantic British did in the youtube video for ARP studs was near the thread limits" and then just picked something roughly in between those 2 values.
As in, I didn't have the guts to go to 85 ft pounds, just bein' honest.
As in, I didn't have the guts to go to 85 ft pounds, just bein' honest.
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No Doubt (04-29-2018)
#68
04-30-2018, 08:34 AM
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Sixpack577 (04-30-2018)
#69
04-30-2018, 10:25 AM
#70
04-30-2018, 10:36 AM
That is way too much money for short headers. The ones from Australia are less, but I do not believe they ship to the US. Two of the boltholes on my manifolds are totally buggered, but I will probably put them back on.