Go Back   The Ford Barn > General Discussion > Early V8 (1932-53)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Search this Thread Display Modes
Old 05-16-2011, 02:15 PM   #1
drchip
Member
 
Join Date: Dec 2010
Location: Delevan, NY
Posts: 79
Default 351 water pump bolt torque

Have had gasket trouble before and am trying to be fussy on this reinstall. I cant find torque specs for this water pump - does 20 sound right?
drchip is offline   Reply With Quote
Old 05-16-2011, 03:35 PM   #2
klicker
Senior Member
 
klicker's Avatar
 
Join Date: Aug 2010
Location: Oregon
Posts: 198
Default Re: 351 water pump bolt torque

Do what my brother-n-law does... use a breaker bar in it until the bolt head snaps off, then back off a touch...

Try this... not sure what size/grade bolts you have. Probably going to be about 15 lb-ft.

http://www.raskcycle.com/techtip/webdoc14.html


Good luck, Roger
klicker is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 05-17-2011, 05:44 AM   #3
drchip
Member
 
Join Date: Dec 2010
Location: Delevan, NY
Posts: 79
Default Re: 351 water pump bolt torque

That is a handy chart - I printed it off to hang in the shop. But torque specs are based on more than the grade and size of bolt right ??
drchip is offline   Reply With Quote
Old 05-17-2011, 07:42 AM   #4
Henry/Kokomo
Senior Member
 
Henry/Kokomo's Avatar
 
Join Date: May 2010
Location: Kokomo, Indiana
Posts: 1,512
Default Re: 351 water pump bolt torque

Grade and size of bolt are of primary importance. After that, lubrication, thread pitch, class of fit, and specific material, etc.,
Henry/Kokomo is online now   Reply With Quote
Old 05-17-2011, 10:03 AM   #5
klicker
Senior Member
 
klicker's Avatar
 
Join Date: Aug 2010
Location: Oregon
Posts: 198
Default Re: 351 water pump bolt torque

correct to both of you. Torque is pretty much based on the size and grade of the bolt. The torque reading to bring the fastener to its strongest hold is also influenced by lubrication. It takes less torque (reading on the torque wrench) to bring a clean lubed fastener to full strength than a dry (maybe dirty?) fastener.

This is a great chart.
klicker is offline   Reply With Quote
Old 05-29-2011, 08:34 PM   #6
jozf
Junior Member
 
Join Date: May 2011
Posts: 2
Default Re: 351 water pump bolt torque

I just put my water pump on my 302 and the correct torque on all 302 and 351 and many more is 15 to 22ft torque lbs.
jozf
jozf is offline   Reply With Quote
Old 05-29-2011, 08:39 PM   #7
jozf
Junior Member
 
Join Date: May 2011
Posts: 2
Default Re: 351 water pump bolt torque

Also the bolt size is 5/16 x 8 standard with a 1/2" head
jozf
jozf is offline   Reply With Quote
Old 05-30-2011, 06:05 PM   #8
Frank The Plumber
Senior Member
 
Join Date: May 2010
Posts: 694
Default Re: 351 water pump bolt torque

Yeah 15 to 22 is fine. Keep in mind you are going into an aluminum cover assembly, torque specs per bolt size and all of that go out the window. !5 is better, I don't even torque these, never have and never leaked. I use the justabouta method. Just about a same force as applied to taking off a beer bottle cap. More than that will result in tears or purchasing the cover I have in my parts stash.
Frank The Plumber is offline   Reply With Quote
Old 05-31-2011, 08:22 PM   #9
drchip
Member
 
Join Date: Dec 2010
Location: Delevan, NY
Posts: 79
Default Re: 351 water pump bolt torque

I was wondering about that torque chart in aluminum. Did mine at 15 and sofar so good. thanks
drchip is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 07:21 AM.