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Retaining head bolt position
#1
I know I've got to keep the push rods, etc. organized to return them to the same position when I put everything back together, but is there a compelling reason to keep the head bolts in the exact same hole? I mean, 90 ft lbs is 90 ft lbs, right?

Also, is there a compelling reason to spend $50+ to buy 16 new head bolts if the ones I pulled appear to be in great condition?

Doc

[Image: 6y14ea.jpg]

Project started 8-7-10
Completed: All new suspension, rebuilt 351C H Code bored .030 over with mild cam and intake, new 3.50 TracLok, custom exhaust system
Current "mini-project": interior upgrade Undecided
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#2
Doc,

I have never been concerned about keeping head bolts in the same order.

Since you are not building a "race" motor, I would also not worry about getting new bolts if the ones you have look good. As you inferred, proper torquing of the bolts is the key for your application.

BT

Do the RIGHT thing.
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#3
HAve always changed them due to bolt stretch.
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#4
I agree with Roy. I always change mine. I figure if I'm spending the money on a rebuild no sense on skimping on the head bolts.
Jim
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#5
I always change them , too. But i read that the most factory Ford head bolts are not stretch bolts (in the older engines, newer like the HO have stretch bolts). These are normal bolts that you can reuse.

[Image: t5Banner.jpg]
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#6
david020278;9474 Wrote:I always change them , too. But i read that the most factory Ford head bolts are not stretch bolts (in the older engines, newer like the HO have stretch bolts). These are normal bolts that you can reuse.

+1 If your just building a mild street motor etc...I have never replaced mine.Like was said they are not stretch bolts.Just make sure they are clean and lube them before install.If you are going to an aftermarket aluminum head then I would buy a new set of ARP head studs.Just my .02.


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#7
Reuse the headbolts in any order as long as they are very clean. Follow the head gasket torquing instructions and you will be fine.
I mentioned instructions because some Felpro head gasket instructions are different than factory, I think it was the hi-perf head gaskets

[Image: mustangnight010.jpg]
1972 Mustang Convertible 351C 4V
1966 Ford Galaxie 7 litre-4speed

Jorge
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#8
Use some good quality assembly lube on the threads when you torque. I watched a test on TV showing results from different types of lube on threads. Also do not overlook chasing/cleaning the tapped holes in the block. An inexpensive tap or thread chaser is available from any industrial supply house.

Jeff T.

Low buck, touring style, '73 Convertible "rolling restoration", 351c, 2v heads with a shave and a haircut, Performer intake, Holley 650(ish), roller rockers, screw in studs, guideplates, stainless valves, Duraspark / Motorsports MSD, T-5 conversion. 1-1/8" front, 3/4" rear swaybars KYB shocks and some home brewed subframe connectors. Future plans; JGC steering box, Cobra brakes and... paint, interior, etc.

When I die I want to die like grandpa, peacefully in my sleep... not screaming, like his passenger.

[Image: 1_12_09_14_10_15_11.png]
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#9
Yep, that's why I hang out here instead of other places. You guys share your experiences and rationalel, and I get to decide myself what I'm gonna do. Since budget has now become more important than labor, I'll keep the stock head bolts and if a head gasket blows, I promise to smile and say, "Cool! I get to practice tearing that motor apart again." I also promise to post it here if it happens! Tongue

Doc

Doc

[Image: 6y14ea.jpg]

Project started 8-7-10
Completed: All new suspension, rebuilt 351C H Code bored .030 over with mild cam and intake, new 3.50 TracLok, custom exhaust system
Current "mini-project": interior upgrade Undecided
  Reply
#10
droptop73;9499 Wrote:Use some good quality assembly lube on the threads when you torque. I watched a test on TV showing results from different types of lube on threads. Also do not overlook chasing/cleaning the tapped holes in the block. An inexpensive tap or thread chaser is available from any industrial supply house.

I watched that show also. Very interesting on the different lubes and when you double click a torque wrench the difference it makes.
Doc, here is a link you might like;

http://www.ehow.com/how_5572681_reuse-head-bolts.html
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