<VV> RE: Engine air baffles--Follow-up question (long answer)

[John David Thomson]

Thanks Craig, this is actually what I had envisioned I was going to do anyway, as I have to put Viton on this unit anyway.  Your method is a bit similar to what was in "How to keep your Corvair Alive - Richard Finch", so it makes sense.

PS, should I paint the baffles with white VHT paint on both sides before installing them, or will that make any difference.  (IE Richard Finch does recommend painting the pushrod tubes with VHT).

Dave.............
> 
> You will have to remove the pushrod tubes and pushrods to 
> install the air
> baffles.  Now this is where your earlier question about the 
> wisdom/problemsrelated to removing certain engine parts comes 
> in.  It isn't the exhaust
> manifolds that cause trouble; it's the upper cylinder head 
> studs.  In order
> to remove the pushrod tubes, you have to remove the rocker arms 
> and lower
> cylinder head studs.  If you loosen all of the lower 
> cylinder head studs,
> you will have to loosen all the upper studs in preparation for a 
> retorquingof the heads.  The upper studs tend to corrode 
> and when the nuts are coming
> off they will sometimes seize and unscrew the stud from the 
> block (not
> good). Additionally, upper studs are the ones that tend to pull 
> out of the
> block (ruining the threads); also not good.  If your upper 
> stud threads are
> clean and/or well lubed, you will likely get away with removing 
> the nuts and
> later retorquing.  However, if they are not...
> 
> Here's a workaround that removes two tubes at a time and usually 
> circumventsthe loosening of the upper studs.
> 1) remove two rocker arms on a given cylinder
> 2) remove the two rocker arm studs and the guide plate
> 3) remove the two pushrod tubes
> 4) temporarily reinstall the two studs and guide plate AND 
> TORQUE them to
> 30#
> 5) repeat for the other two cylinders
> Now you have a torqued head without pushrod tubes
> 6) install the baffle now
> 7) remove two studs, install pushrod tubes, guide plate, studs 
> and retorque
> 8) repeat for the other two cylinders
> 
> Yes, this is a lot of extra work.  Consider this method if 
> the upper stud
> threads aren't in good shape.  If the upper studs appear to 
> be workable,
> clean and oil the threads, hold the stud with a vice grip down 
> near the
> block, and gingerly try removing the upper nuts. Do not allow 
> the stud to
> turn. Retorque normally when you have it all back together. 
> 
> If you don't have a pushrod tube removal tool, purchase one or 
> consult my
> techlines tip (Communique Jan 2006)about how to make one from an 
> old tube.
> Craig Nicol
> 65,66,67,68
> 
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