ARP Studs Tourqe ?

modmach1

Member

Jan 16, 2003

239

4

16

Norway

May 28, 2004

#1

• May 28, 2004

• #1

Hi again ! It has been a while since my last visit here. The project has not seen much work lately, but the summer is up and coming over here so now i want one of the Stangs finished. I have bought a new buildt 302. I have one problem.. The engine has all ARP bolts and studs and i dont have the papers on the head studs. I dont know how much torque that they shall have. (the studs are 7"/16") I sent a mail to ARP for 4-5 days ago and i havent got any answers. I want to try mounting the engine in the car tomorrow.. but then ill need the tourqe specs. Hope someone in here can help me with this little problem.
Best regards from NORWAY.
Stephan
71 429 CJ-R Mustang
71 Mustang Mach-1 302
79 Mustang Hatchback

 

Max Power

Active Member

Jul 31, 2003

1,774

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St Paul

May 28, 2004

#2

• May 28, 2004

• #2

I would imagine that the torque specs are the same as from the factory. While the ARP bolts are much stronger than factory, torque specs are a measurement of clamping forces, and I would have a hard time imagining that it would change just because the fastener type changed.

 

Edbert

Founding Member

Jul 13, 2002

3,548

32

109

Austin TX

May 28, 2004

#3

• May 28, 2004

• #3

Yup, torques specs are not determined by ARP. I torqued mine according to what Edelbrock told me even though I used ARP studs. ARP did tell me HOW to get accurate torque readings when using their products but the actual numbers came from Edelbrock. What kind of heads do you have?

 

Great68

Founding Member

May 16, 2002

691

0

16

Victoria BC

May 28, 2004

#4

• May 28, 2004

• #4

The torque should be 70 ft/lbs, then retorque the 5 upper studs to 80 ft/lbs.

 

thehueypilot

Active Member

Feb 25, 2004

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37

Medina,Tennessee

May 28, 2004

#5

• May 28, 2004

• #5

The ARP fasteners are stronger than stock, but the factory torque spec's would apply except...................if you use ARP's moly lube to install them. The lube will remove the friction loss at the threads and so would lower the torque by about 20% to get the same clamping force as a dry fastener with 100 ft/lbs of force applied.

 

Max Power

Active Member

Jul 31, 2003

1,774

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St Paul

May 28, 2004

#6

• May 28, 2004

• #6

Good point.

Skip the lube!

 

modmach1

Member

Jan 16, 2003

239

4

16

Norway

May 28, 2004

#7

• May 28, 2004

• #7

Edbert said:

Yup, torques specs are not determined by ARP. I torqued mine according to what Edelbrock told me even though I used ARP studs. ARP did tell me HOW to get accurate torque readings when using their products but the actual numbers came from Edelbrock. What kind of heads do you have?

Click to expand...

I use original steel heads. Thanks for the answers !!!