<VV> Pinging Question Take deux

[jvhroberts at aol.com]

 Remember, Corvair engines don't need lead to lube their valve seats. The seats are already harder, by a bunch, than the seats in cast iron water pumper heads. Plus, the lead still will accumulate, as you're also diluting the lead scavenger, which is usually ethyl chloride, not something that adds energy to the burn! 

At the less than 10% price premium, at least to me, it makes no sense to blend your own gas! 

 

John Roberts
 

 

-----Original Message-----
From: kaczmarek at charter.net
To: jvhroberts at aol.com
Cc: virtualvairs at corvair.org
Sent: Mon, Sep 20, 2010 4:42 pm
Subject: Re: <VV> Pinging Question Take deux


John
Before gas became unleaded, Regular leaded had WAY too much lead in it. 

Most of us have dropped oil pans on Vairs and other old cars and seen an awful 
lot of lead in the oil.  Definitely hazardous. 

Now you take 5 gallons of LOW LEAD AVGAS and dilute it with 7-8 gallons of 
UNLEADED gas, and there's enough TEL to do the job of lubricating, but not 
enough to gum up the engine. 

As I remember, the gas stations around my house had regular leaded gas, and 
"Ethyl" leaded gas, which was (I guess) both more octane and more lead. 

We always used regular leaded gas in our families  cars, as the Ethyl was too 
expensive at 34 9/10 cents per gallon, vs 29 9/10th cents for regular leaded.   

Hank 
---- jvhroberts at aol.com wrote: 
> 
>  The modern way of making octane has the HUGE advantage of not leaving lead 
deposits. I think, back then, the stated octane was research octane, which is 
about 8-10 points higher than motor octane. Hence the reason for the RON+MON/2 
method. In other words, subtract about 5 octane points from the 1960s number to 
get a reasonable comparison with modern gasoline. 
> 
> At any rate, I remember octane "creep" on my engines back then, thanks to lead 
deposits in the combustion chambers adding hot spots and a bit of compression 
ratio. Not to mention all the deposits on the back of the valves. Something 
nearly unheard of in today's engines, or any engine running on today's gas. 
> 
> Never been a big fan of TEL for these reasons. 
> 
>  
> 
> John Roberts
>  
> 
>  
> 
> -----Original Message-----
> From: kaczmarek at charter.net
> To: Virtualvairs at corvair.org
> Sent: Mon, Sep 20, 2010 4:15 pm
> Subject: Re: <VV> Pinging Question Take deux
> 
> 
> Somehow my reply got zapped off what I sent.  Things that make you say hmmmmm. 

> 
> Anyway, I've not read the pinging thread as my system, although technically 
> illegal, works very well. 
> 
> Drive the car till nearly empty.   Take your Non-Vair to the local private 
> airport with your 5 gallon can, tell the attendant you have a dirt track racer 

> and you want to buy 5 Gallons of 110 LL Aviation Gasoline.  Go home and put 
the 
> gas in your vair, then drive to the gas station and fill the rest of the way 
> with 93 Super Premium unleaded.  You will now have a tankful of approx 100 
> Octane VERY LOW LEAD Gas. 
> 
> Now just drive the car.  That little bit of Tetraethyl Lead will cure not only 

> pinging but many other funky sounds in your powerplant. 
> 
> I once had a friend fill my vair from the tanks on his airplane. 140 PG LM.  
Car 
> tore ass up the interstate with almost no foot in the pedal.  SO THAT'S how 
it's 
> supposed to run, I thought to myself.     
> 
> I do the LL gas thing every 6 months. Your mileage may vary, especially if you 

> feel you are harming the environment, as this practice is illegal under 
federal 
> (EPA) regulations.  It's OK for a dirt track racer, so tell the attendant 
that's 
> what you want it for. 
> 
> As for harming the environment, go take a look at the smog in China, where 
> everyone's wearing dust masks all day when outside as they have no EPA and 
could 
> give a crap less, then go outside and hug a tree, and you and your Vair will 
be 
> feeling better shortly.  
> 
> Remember the high octane ethyl that Gulf sold?     NO-KNOX-----for a reason!!!
> 
> Hank 
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