<VV> valve seats revisited (Engine Braking)

[shortle]

Well, there are traffic laws and speed limits in the more uncivilized parts of the country as well. Timothy Shortle in (beautiful, uncivilized) Durango Colorado 81301
Rampside currently down due to a failed valve seat '65  95HP  PG  3.55 owned since 1980


-----Original Message-----
>From: Ron <ronh at owt.com>
>Sent: May 9, 2012 1:11 PM
>To: virtualvairs at corvair.org, jvhroberts at aol.com
>Subject: Re: <VV> valve seats revisited  (Engine Braking)
>
>Well, there are traffic laws and speed limits in the more civilized parts of the country.
>RonH
>
>  ----- Original Message ----- 
>  From: jvhroberts at aol.com 
>  To: ronh at owt.com ; virtualvairs at corvair.org 
>  Sent: Wednesday, May 09, 2012 11:46 AM
>  Subject: Re: <VV> valve seats revisited (Engine Braking)
>
>
>  Again, a sample of 1 isn't meaningful. IMHO, the CHT on all Corvair engines is too high. Run one hard, and it's ALWAYS too high. 
>
>
>
>  John Roberts
>
>
>
>
>  -----Original Message-----
>  From: Ron <ronh at owt.com>
>  To: virtualvairs <virtualvairs at corvair.org>; JVHRoberts <JVHRoberts at aol.com>
>  Sent: Wed, May 9, 2012 10:38 am
>  Subject: Re: <VV> valve seats revisited (Engine Braking)
>
>
>ALL Corvair engines?  The 110 in my '66 has never been removed and all
>original valve seats are intact.  It has been driven over the Cascades
>numerous times (like last weekend when I took it over both Stevens and
>Snoqualmie Passes) with no problems.  It has been cruised in 115 degree 
>temperatures, not just to the store but on the Interstate all day.  Yes, we 
>have mountains here and no valve seat problens, or at least not for the last 
>46 years.  I don't know about next year, of course.
>RonH
>
>----- Original Message ----- 
>From: <jvhroberts at aol.com>
>To: <virtualvairs at corvair.org>
>Sent: Tuesday, May 08, 2012 11:20 AM
>Subject: Re: <VV> valve seats revisited (Engine Braking)
>
>
>>
>> Not quite. It means ALL Corvair engines need both better cooling and
>> better valve seat retention. A CHT won't tell you when the seats are about
>> to come loose. That's an inevitability on a lot of these engines.
>>
>>
>>
>> John Roberts
>>
>>
>>
>>
>> -----Original Message-----
>> From: FrankCB <FrankCB at aol.com>
>> To: vairmike <vairmike at sbcglobal.net>; virtualvairs
>> <virtualvairs at corvair.org>; judynrandy <judynrandy at comcast.net>
>> Sent: Tue, May 8, 2012 1:23 pm
>> Subject: Re: <VV> valve seats revisited  (Engine Braking)
>>
>>
>> That's why IMHO not just turbos and 140s but ALL Corvairs need at least
>> ONE head temp gauge.
>>
>> Frank Burkhard
>> Boonton, NJ
>>
>>
>> In a message dated 5/8/2012 11:23:43 A.M. Eastern Daylight Time,
>> vairmike at sbcglobal.net writes:
>>
>> My  experience with dropping valves has mostly been when going from steady
>> hwy
>> cruising (no indication of overheat) to closed throttle exit ramp. I could
>> see
>> hill climbing to engine braking could easily be worse. I think most of  my
>> cases
>> of dropped valve seats were caused by a previous (months or  years)
>> overheating
>> from broken/thrown belts.
>>
>> Mike  Kost
>>
>>
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