The Ford Barn

My 34 Ford · 12-08-2011, 02:56 PM

What is the proper head torque for a 1934 221 stud engine with aluminum heads?

fordscript · 12-08-2011, 03:39 PM

The book says 35-40 ft/lbs

Tinker · 12-08-2011, 04:01 PM

Torque. Run engine to get warm. Let cool and re-torque.

Jack E/NJ · 12-08-2011, 07:02 PM

http://www.vanpeltsales.com/FH_web/f...rque-specs.htm

I go to 45 ft-lbs with cast iron & clean stud threads. Re-torque often till readings stabilize. I used to go to 30 with aluminum. Same re-torque method.

Jack E/NJ

David J · 12-09-2011, 09:37 AM

Back in the dark ages I made the mistake { once } of doing them like a later model motor - 70 ft # & this accomplished thread removal on numerous studs . Pete at little dearborn when they were still on washington avenue in north MPLS got a real laugh out of that . He was a really great guy - despite the fact he enjoyed teasing a dumb 14 year old kid . YES I deserved it & in reality he was a HUGE help to me - God rest his soul . Roger is in charge now & he is a big help also . The troops have it right above & allz I will add is I use anti -seize on the nuts . David J

Ol' Ron · 12-09-2011, 10:59 AM

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I've been using 45 ft/lbs on everything since the beginning of time. Broke and stripped too many . Now lets look at a blown nitro burning Hemi with 10 studs torqued to 100 lbs each, that means the head has a 1000 lbs of clamping force. NOW, lets take a Flathead with 24 studs torqued to 45 lbs equals = 1080 lbs. Kinda makes you think.

Jack E/NJ · 12-09-2011, 11:05 AM

David J>>>I will add is I use anti -seize on the nuts>>>

Me too, David! But I think some will probably disagree.

Jack E/NJ

12-08-2011, 02:56 PM	#1
My 34 Ford Member Join Date: Nov 2011 Location: Omaha Nebraska Posts: 53	Head torque for 1934 221 engine What is the proper head torque for a 1934 221 stud engine with aluminum heads?

12-08-2011, 03:39 PM	#2
fordscript Senior Member Join Date: May 2010 Location: Oamaru, New Zealand Posts: 428	Re: Head torque for 1934 221 engine The book says 35-40 ft/lbs

12-08-2011, 04:01 PM	#3
Tinker Senior Member Join Date: May 2010 Location: MN Posts: 7,063	Re: Head torque for 1934 221 engine Torque. Run engine to get warm. Let cool and re-torque.

12-08-2011, 07:02 PM	#4
Jack E/NJ Senior Member Join Date: May 2010 Posts: 2,260	Re: Head torque for 1934 221 engine http://www.vanpeltsales.com/FH_web/f...rque-specs.htm I go to 45 ft-lbs with cast iron & clean stud threads. Re-torque often till readings stabilize. I used to go to 30 with aluminum. Same re-torque method. Jack E/NJ

12-09-2011, 09:37 AM	#5
David J Senior Member Join Date: Jun 2010 Location: St Croix Falls WI Posts: 2,080	Re: Head torque for 1934 221 engine Back in the dark ages I made the mistake { once } of doing them like a later model motor - 70 ft # & this accomplished thread removal on numerous studs . Pete at little dearborn when they were still on washington avenue in north MPLS got a real laugh out of that . He was a really great guy - despite the fact he enjoyed teasing a dumb 14 year old kid . YES I deserved it & in reality he was a HUGE help to me - God rest his soul . Roger is in charge now & he is a big help also . The troops have it right above & allz I will add is I use anti -seize on the nuts . David J

12-09-2011, 10:59 AM	#6
Ol' Ron Senior Member Join Date: May 2010 Location: Chester Vt Posts: 8,985	Re: Head torque for 1934 221 engine Sponsored Links (Register now to hide all advertisements) I've been using 45 ft/lbs on everything since the beginning of time. Broke and stripped too many . Now lets look at a blown nitro burning Hemi with 10 studs torqued to 100 lbs each, that means the head has a 1000 lbs of clamping force. NOW, lets take a Flathead with 24 studs torqued to 45 lbs equals = 1080 lbs. Kinda makes you think.

12-09-2011, 11:05 AM	#7
Jack E/NJ Senior Member Join Date: May 2010 Posts: 2,260	Re: Head torque for 1934 221 engine David J>>>*I will add is I use anti -seize on the nuts>>>* *Me too, David! But I think some will probably disagree.* *Jack E/NJ*