<VV> RE: Cylinder head torqueing

[Craig Nicol]

I use the sequence in the '65 manual and torque from 10 to 30# in 5#
increments, repeating the 30# sequence a second time.  I've never had a
problem after many, many engines.  I'm interested to read other responses;
always room to learn!

Craig Nicol

 

  _____  

From: John David Thomson [mailto:jdavethomson at shaw.ca] 
Sent: Tuesday, July 17, 2007 8:27 AM
To: John David Thomson
Cc: Craig Nicol; virtualvairs at corvair.org; kent_duncan at yahoo.com
Subject: Cylinder head torqueing

 

Okay, I got the air baffles installed and new viton installed on the pushrod
tubes and I now am looking at retorquing the heads on each side.   I have
found 4 different torque sequences in my reading.

1. 1965 manual (other sources say this method is not recommended anymore)

2. Richard Finch approach (torque in 5 ft lb increments as if you were doing
three one cylinder engines and going from centre to outside alternating top
and bottom)

3. San Diego Vair Tips 1974 tip 9-1-1974 shows a pattern a little bit like
Richards, but goes in a circular pattern from middle cylinder to outer
cylinders).

4. 1969 manual shows torquing all the lower nuts from inner to outer, then
all the top nuts from inner to outer.

 

So for all you folks who have done this many times, which technique should I
use?

 

Regards, Dave..........