<VV> too much trans fluid causing an ominous knock?

[Ernie Sanders]

Corvair torque converters will 'drain back' its fluid after not driving for 2 to 3 weeks.  Mine does and leaks a gob of fluid via the shift cable o-ring and boot.    The torque converter drains back into the transmission.  If you fired up the engine and ran it for a couple of minutes the excess fluid would be pumped back up in the torque converter.
Of course, if your low end knock is a loose rod it wouldn't do your engine any good!  Ernie


--- On Sat, 12/27/08, Jedd Hebrink <jhebrink at anvilcom.com> wrote:

> From: Jedd Hebrink <jhebrink at anvilcom.com>
> Subject: <VV> too much trans fluid causing an ominous knock?
> To: virtualvairs at corvair.org
> Date: Saturday, December 27, 2008, 3:19 PM
> Holiday greetings to all you Corvair folks out there.  I
> have a question for
> the group:  I have 66 Monza 110 PG that I rebuilt over the
> spring and summer
> (my daughter's car actually - many of you offered
> invaluable advice as I
> struggled through that process).  After the recommended run
> in period and
> oil changes etc., I started out to deliver the car to my
> daughter who lives
> an hour away.  After 45 minutes of trouble free highway
> driving, I came to a
> stop sign.  As I pulled away, I noticed a loss of power and
> horrible low end
> sound I can best describe as a knock.  After posting
> questions back then, I
> received many helpful suggestions as to the possible
> causes.
>  
> Fast forward to today.  I finally got out to my shop and
> prepared to pull
> the engine and transmission to tear into it again and look
> for the culprit.
> As I disconnected the shift cable from the PG, at least a
> pint (maybe two)
> of trans fluid came rushing out.  This did not seem normal.
>  I checked the
> trans dipstick.  Engine and trans cold, on level ground. 
> There is still at
> least a pint too much fluid showing on the stick.
>  
> My question is, could overfilling the transmission cause a
> low end "knock".
> Someone suggested that the flex plate bolts may have been
> loose, but they
> weren't.  Just wondering if too much fluid in the
> torque converter or tranny
> could cause a similar problem?
>  
> I will halt my engine removal plans until  I hear back from
> the group.
> Maybe I will get lucky and just need to drain off the
> excess trans fluid.
> By the way, I cannot figure out how the trans got
> overfilled.  I added fluid
> when I put the engine and trans back in last summer, but I
> was being careful
> to check it hot and not overfill it.  I guess I must have,
> it is too full
> now.
>  
> Many thanks to all that have offered so much help over the
> months!
> Jedd Hebrink
>  
>  
> 
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> 1:01 PM
>  
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