The Ford Barn

zoegrant · 04-24-2018, 12:02 PM

Can someone tell me the torque spec for the crank bolt at the pully on a 239 engine ?

Admiral · 04-24-2018, 12:38 PM

Sorry, I can't help, but as my dad would say, "Strip it then back off half a turn!"

flatheadmurre · 04-24-2018, 12:43 PM

More like don´t over do it or you crush the washer...
Tighten until engine turns over and be happy with it

19Fordy · 04-24-2018, 01:50 PM

`According to notes I made in 1973 when I rebuilt my engine, the 239 Ford 8BA calls for the following: 45 to 55 foot pounds for the crank pulley to crank bolt. It has never come loose. The same is also used only for the 1951 Merc engine. 49 and 50 Merc may be different.

Ronnieroadster · 04-24-2018, 02:00 PM

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Even at over 220 MPH 45 to 55 Foot Pounds works perfectly.
Ronnieroadster

04-24-2018, 12:02 PM	#1
zoegrant Senior Member Join Date: Jun 2010 Location: tolland CT Posts: 773	Crankshaft bolt torque spec Can someone tell me the torque spec for the crank bolt at the pully on a 239 engine ?

04-24-2018, 12:38 PM	#2
Admiral Senior Member Join Date: Jul 2011 Location: Oakland County, Michigan Posts: 562	Re: Crankshaft bolt torque spec Sorry, I can't help, but as my dad would say, "Strip it then back off half a turn!"

04-24-2018, 12:43 PM	#3
flatheadmurre Senior Member Join Date: Apr 2015 Location: Sweden Posts: 3,045	Re: Crankshaft bolt torque spec More like don´t over do it or you crush the washer... Tighten until engine turns over and be happy with it

04-24-2018, 01:50 PM	#4
19Fordy Senior Member Join Date: May 2010 Location: Coral Springs FL Posts: 11,604	Re: Crankshaft bolt torque spec `According to notes I made in 1973 when I rebuilt my engine, the 239 Ford 8BA calls for the following: 45 to 55 foot pounds for the crank pulley to crank bolt. It has never come loose. The same is also used only for the 1951 Merc engine. 49 and 50 Merc may be different. Last edited by 19Fordy; 04-25-2018 at 09:04 AM.

04-24-2018, 02:00 PM	#5
Ronnieroadster Senior Member Join Date: Dec 2010 Location: East Coast in CT Posts: 1,697	Re: Crankshaft bolt torque spec Sponsored Links (Register now to hide all advertisements) Even at over 220 MPH 45 to 55 Foot Pounds works perfectly. Ronnieroadster __________________ I use the F word a lot no not that word these words Flathead, Focus and Finish "Life Member of the Bonneville 200 MPH Club using a Ford Flathead block First Ford Flathead bodied roadster to run 200 MPH Record July 13, 2018 LTA timing association 200.921 First Ford flathead roadster to run 200 MPH at Bonneville Salt Flats setting the record August 7th 2021 at 205.744 MPH reset the record in 2024 to 211.830 running to mile four. Top speed 2024 mile five 220.672 exit speed 221.587