[70calypsomach]

Is there any problem re-using head bolts? I know they yeild some every time you torque them but I feel they should be fine. Just a running question at work.

Mark Memmer
70 Calypso Coral Mach 1 351C 4V Completed by 8/01
98 Cobra Convertible
93 5.0 Mustang LX (Winter Ride)
00 Volvo S80 (Wifes Ride)

 

[mstngjoe]

I have had the heads on/off my 302 three times and used the same bolts with no apparent problems. I notice that on SWMBO's 94 GT, the Haynes book says not to reuse.

65 FB "J" 302 lots of mods. 94 GT K&N only.
http://albums.photopoint.com/j/view?u=1590489&a=12113030&p=43871256.jpg

 

[charlie65_67]

I reused the bolts on my Hi-Po heads without a problem. I think early engineering peices were designed with the expectation they would be reused once, perhaps twice, whereas current engineering has spec'd bolts and material designed for a one time stress. If peice of mind is an issue or if there is obvious damage, or certianly any engine that is expected to live in the higher RPM ranges a lot of the time, go new.

65 Hi-Po F/B (7 yr resto)
67 GTA F/B (small block) Mustang Owners Club of Austin (MOCA), TX
MCA 27479
http://albums.photopoint.com/j/View?u=1575609&a=11978710&p=43914197.jpg

 

[Guest]

In the old school (I learnt from one of the oldest mechanics in the area), I was taught that you reuse them and alway make sure they go back in the EXACT place they came out of. Since over time parts will wear one way or another. If you put a bolt from the top into the bottom edge of the head, it could tend to reposition the head.

http://members.tripod.com/tangdar/
'67 Coupe project car (Did I say project car? I meant pile of rust)
http://www.americainter.net/~fevans/tangdar_flintstone.jpg

 

[Guest]

After posting my first reply, I looked at your bio. It's rather ironic that an automotive engineer is asking us shade-trees for advice LOL

http://members.tripod.com/tangdar/
'67 Coupe project car (Did I say project car? I meant pile of rust)
http://www.americainter.net/~fevans/tangdar_flintstone.jpg

 

[Teebone]

I have used them over again..never had a problem

'59 T-Bird..[color:blue]'70 Mustang Convert</font color=blue>...[color:green]'72 Mach One</font color=green>
http://clubs.hemmings.com/baymustang/t-bird.jpg
The Black Bird At 42,she's the oldest in my Ford stable

 

[Scott302]

In the old days head bolts were reuseable. Newer engines (5.0l) use "torque-to-yeild" head bolts which cannot be reused.

Scott
National Parts Depot
1965 Conv:Street driven concours
1966 Coupe: Daily driver and toy