65 monza

[monzadon]

How much torque for heads on the 140 motor

[bbodie52]

This was addressed recently...

» Fri Jun 18, 2010 10:36 pm

I`m torquing heads on a 140 tomorrow and have no manual and no idea...

A 13/16" Deep Socket and 9/16" Socket is needed.[/center]

HEADNUTS – ORIGINAL STYLE:
Used ONLY on Upper Head Studs These have the original style built-in “collar”, (just a flat washer under a regular nut is not suggested). Our head nuts are heat treated & have been tested to over 55 ft/lb., however, they should not be reused after the engine is run & the nuts removed. Head nuts and rocker studs should only be torqued 32-34 ft/lb. For all Corvairs. 12 needed to do two (2) heads.

CHROME ACORN NUTS: Install after the headnuts to keep the ends of the studs from rusting (for upper studs).

https://ssl.corvair.com/user-cgi/catalo ... ow_page=13




Part number C1089: NUTS-HEAD-SET 12 PLATED (SET 6=C4633) CHROME ACORN NUTS TO COVER END OF STUD =C3413

Weight: 0 lbs 6 oz
Catalog Page(s): 13(69),20,181,329,OT-4 40(RM19)
Price:
1 - 1 $ 6.20



Part number C3413: NUTS-12 CHROME ACORN-UPPER HEAD STUDS

Weight: 0 lbs 6 oz
Catalog Page(s): 13(69),20,181
Price: $ 15.20

The link below will provide you with a list of useful websites that are Corvair-related. Some of the links will lead you to an extensive technical library that will allow you to download shop manuals and other technical references in Adobe Reader format at no cost. There is also a link that will help you to locate nearby CORSA (Corvair Society of America) club chapters. You will also find a list of essential Corvair parts suppliers. Clark's Corvair Parts in Shelburne Falls, MA is the biggest and oldest Corvair supplier in the world. You will find a link that can provide you with a series of videos that amount to a tour of the Clark's Corvair Parts facilities. Parts suppliers such as this truly make our Corvair hobby possible.

Common and Useful Corvair Websites
viewtopic.php?f=225&t=6007

Some recommend a slightly lower torque specification. Click on the link below to read their comments...

viewtopic.php?f=55&t=1021

[Bruins_Fan]

viewtopic.php?f=55&t=1021

It seems the current consensus is to go 30 ft/lbs.

[joelsplace]

Yes 30 is generally used by most people but some report good results with 25.