<VV> Painting? push rod tubes

[Ron]

Painting or otherwise insulating the pushrod tubes might make a difference 
if there was a significant mass oil flow in them but with the insignificant 
flow that there is, it can't make a significant difference.  It is possibly 
significant that I have never seen any evidence of oil coking in these tubes 
so maybe they never do get too hot.
RonH

----- Original Message ----- 
From: "J R Read_HML" <hmlinc at sbcglobal.net>
To: <kwoodke at comcast.net>; "VV" <virtualvairs at corvair.org>
Sent: Saturday, March 24, 2007 10:39 PM
Subject: Re: <VV> Painting? push rod tubes


> Keith...
>
> Times, they are a changin'
>
> When the book was written, what % of Corvair owners do you think might 
> have been using synthetic oil?  My bet is something LESS that 1%.  That 
> was for Buick and Caddy owners.
>
> Today, what % of Corvair owners are using synthetic oil?  I'd guess that 
> (for those cars not obviously using/burning oil), it is likely in the 80% 
> range.
>
> So (without debating the actual degree temp diff [if there really is one] 
> of painted VS non-painted PR tubes) using modern lubricants, do you really 
> think there will be a significant advantage to painting the tubes?  I'm of 
> the opinion that if it makes you happy, then... by all means... do it. 
> Realistically, probably does not make a significantly measurable bit of 
> difference if using synthetic oil.
>
> No empirical data here and not believing the empirical data based on 30W 
> dino juice either.
>
> I sure as heck would not start taking things apart in order to get to the 
> PR tubes so that they could be painted.
>
> Later, JR
>
>
> ----- Original Message ----- 
> From: <kwoodke at comcast.net>
> To: "VV" <virtualvairs at corvair.org>
> Sent: Saturday, March 24, 2007 10:16 PM
> Subject: <VV> Painting? push rod tubes
>
>
>> Yikes I just flew through four email blasts to see if anyone replied as I 
>> am. I think some of you have forgotten Mr Finch's reason to paint half 
>> the tube. It was to insulate the tube from heat from the exhaust tube. 
>> That is why painting of the side toward the exhaust and why use VHT which 
>> is an insulating paint. It was not to increase "heat radiation" in fact 
>> the opposite.
>>
>> Is it a miracle cure? I don't know but it makes perfect sense and next 
>> time I have my engine apart I will do it.
>> Keith Woodke
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