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Re: reusing head bolts [Re: MowP4rsn] #1343070 12/04/12 01:41 AM 12/04/12 01:41 AM
Joined: May 2004 Posts: 5,123 Warrenton, VA RoadRunnerJD master
RoadRunnerJD master Joined: May 2004 Posts: 5,123 Warrenton, VA	The used original bolts are probably better than new aftermarket bolts in many cases. Are your new bolts made in USA?

Re: reusing head bolts [Re: RoadRunnerJD] #1343071 12/04/12 03:39 AM 12/04/12 03:39 AM
Joined: Feb 2007 Posts: 612 Nampa, ID None2Slow mopar
None2Slow mopar Joined: Feb 2007 Posts: 612 Nampa, ID	Ford has used them on their 3.8 v6 supercharged and n/a. Their 6.0 and 6.4 Diesels are also TTY. Several manufactures use them. No, you do NOT have to replace them with TTY when you buy new. When doing a head swap on the 3.8 fords, Fel-Pro sells the head kit with or without the head bolts. The bolts they include are TTY. Just go to autozones website and browse there parts and see what vehicles need them.

Re: reusing head bolts [Re: None2Slow] #1343072 12/04/12 12:59 PM 12/04/12 12:59 PM
Joined: Jan 2003 Posts: 16,376 D dogdays I Live Here
dogdays I Live Here D Joined: Jan 2003 Posts: 16,376	If you use Grade 5 bolts they might very well be "torque to yield" bolts! I can't remember seeing anything other than Grade 8 on my disassemblies. That is 6 marks on the bolt head. R.

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