H11 Torque Specs - What are you guys running?

[adamread]

I've got a set of A1 H11 studs I'll be installing, using arp's ultra-torque lube. Package recommends 135Ft/Lbs, but I know people are running all sorts of numbers.

Any up to date info on what's working for people? Thanks.

:hammer:

 

[adamread]

Nobody?

 

[ncdzl]

I torque arps to 250...

Why are h11s specd so much less?

 

[adamread]

That's what I'm trying to get figured =)

 

[smoker00]

The H11 have less stretch then the arp's do thats all I know..

 

[JDub]

I torque arps to 250...

Why are h11s specd so much less?

Arps use a 17-22 material, A1 is the H11 material. One is way stronger than the other.

Sent from my XT907

 

[DHFF]

i would probably stick with what A1 says to torque them to which is less than ARPs because H11 tool steel is much harder and will 1) break if overtightened, or 2) yank the threads out of the block. The heads require a certain compression agains the block deck and I assume a company selling 600 dollar studs knows what that needs to be and how to get there.

 

[sfu7274456]

You could just PM Tadd at Elite. He and his guys have put in hundreds of them.

 

[96F350KID]

i would probably stick with what A1 says to torque them to which is less than ARPs because H11 tool steel is much harder and will 1) break if overtightened, or 2) yank the threads out of the block. The heads require a certain compression agains the block deck and I assume a company selling 600 dollar studs knows what that needs to be and how to get there.

:whs:

 

[adamread]

In case anyone is lurking, the lastest from A1 is 175Ft/Lbs in three steps.