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

[shortle]

A year ago on my way to the "Toss" in Palm Springs Ca. all of a sudden my engine started to knock excessively loud and I was sure it was a crankshaft knock. I had it towed back to Durango and when finally looking into what went wrong the first thing I did was to pull the plugs with the intention of checking compression. #5 cylinder spark plug was smashed closed (no gap). Immediately I knew something was in that hole. I pulled the RH cylinder head and found the intake valve seat was in pieces. I had to replace #3 and #5 pistons as well as installing 2 95 HP heads. I no longer trust 140 HP heads as this was the second time this had happened to me in 28 years. And I was certain it was a crankshaft knock.
Timothy Shortle in Durango Colorado

-----Original Message-----
>From: Shaun McGarvey <shaun_mcgarvey at shaw.ca>
>Sent: Dec 28, 2008 10:44 AM
>To: virtualvairs at corvair.org
>Subject: Re: <VV> too much trans fluid causing an ominous knock?
>
>Hi Jedd, the transmission thing is normal, the engine thing is not.
>The "knock" could be a number of things, but with the accompanying loss of 
>power, a lot fewer things. When you did your rebuild did you reuse the 
>original pistons? They have a habit of breaking at the oil ring groove 
>causing the top to come right off. If it's not that, I'd bet on a dropped 
>valve seat.
>So do a compression test before you pull the engine. My guess is you'll find 
>one hole with zero and only have to pull one head off.
>
>yea, Vairily ... Shaun
>
>----- Original Message ----- 
>From: "Jedd Hebrink" <jhebrink at anvilcom.com>
>To: <virtualvairs at corvair.org>
>Sent: Saturday, December 27, 2008 12:19 PM
>Subject: <VV> too much trans fluid causing an ominous knock?
>
>
>> 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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