<VV> Dang 40 yr old aluminum !!!!

[Kent Sullivan]

Barry, make sure that this shop is using the state of the art, seat-wise:
Slightly taller and slightly larger in diameter. They won't fall out that
way, pretty much guaranteed, because there is much more grip than the stock
seats. The shop will need to cool the seat and heat the head to get them in.

This is something, IMHO, that Chevy should have done in the first place...
Since dropped valve seats on the hi-po engines (turbos especially, and 140s)
has been common from the beginning.

--Kent
-----Original Message-----
From: virtualvairs-bounces at corvair.org
[mailto:virtualvairs-bounces at corvair.org] On Behalf Of D. Barry Ellison
Sent: Wednesday, March 05, 2008 7:24 PM
To: Virtual Vairs
Subject: <VV> Dang 40 yr old aluminum !!!!

<snip>

So, the bad seat areas will be welded up tomorrow, taken to the machine shop
for 6 new exhaust valve seats and one more intake again.  After that, we'll
weld a small bead around them to hold them.  (Is there a real need to run a
bead around the entire seat or is two 1/4" beads 180 degrees apart enough?
3 beads at 120 degrees?)
 
Yes, we'll check the valve guides, especially of the ones that dropped.
 
If it happens again, I promise you I will sell everything but my convertible
VERY CHEAPLY and go play with something else, most likely a Factory Five GTM
kit car!Barry Ellison
... more than my share of dropped valve seats.  sassafrackin' frickin' 40 yr
old aluminum!!!