<VV> Re: VirtualVairs Digest, Vol 20, Issue 107

[airvair]

Danny,

I have exactly that same car. And NO that 24 degree advance is NOT a
misprint. It's the real thing. That combo is the only other Corvair
other than the turbo that used it, too. But remember that the car was
built when "premium" was really high octane. Not something you can get
today, unless you're buying racing fuel. I used to run my car on 24
degrees advance and Sunoco 260, which was as good as you could get back
then. It ran without knocking, and it ran like a scalded dog! Even
though the a/c and convert body was the heaviest combo you could get, it
still would blow the doors off any other non'67 110 glide I ever had
(and I've had 3 dozen Corvairs). BTW, my car is very original, with only
33,000 miles on it still.

>From here on I'll let the mechanical gurus take over, as there's better
mechanics on here than me. And incidently, I still have to run "premium"
or what passes for it these days. But the best I can run it is about
14-16 degrees advance.

-Mark

P.S. FWIW, you have a really rare combo there. Only 1396 a/c cars in
'67, and who knows how many of those were converts. Be proud of it! :o)
You've got the best of the best, IMHO.

LastHamlet wrote:
> 
> I am new at this so please be kind. I have been
> working on a problem for 7 months now, and it has me
> stumped.
> I own a 67 Corvair Convertible with factory A/C and PG
> Tranny. Odd thing is, that in that year, in the later
> part, of which mine is, they had a different listed
> timing spec that the rest of the year's production
> model. (24 degrees BTDC)on a 67 corvair with 110HP-2
> carb, flat six with PG and A/C with a wider timing
> mark plate which also registered up to 24 degrees. I
> have spoke to many people, and all have said that is
> likely a missprint, but I have a lot of papers and
> such to the contrary. Although, after playing with it
> a little, I have to agree that 24 degrees as a base
> timing number can only work for one Corvair, being a
> 180HP turbo-charged flat six that came in some 66
> models.
>   Nonetheless, here's the problem and admittidly I am
> not that good a mechanic, but have done all the work
> so far to this little sweetie.
>  Initially, I was having a chugging at 60-65 MPH going
> up an average hill. What did I do??? Oh God, you might
> not want to know, but I will say anyhow... First, I
> replaced the fuel tank, sending unit, fuel lines, and
> carbs. It still chugged, so I changed the
> distributor(But still maybe not correct vacuum
> advance???), of course all the wires and plugs, and
> even changed the existing Petronics with a Petronics-2
> and Flamethrower-2 Coil setup.... Still chugged and
> jerked. (Plus, some up and down idle issues.)
>   I got all kinds of silly advice, from a wire from
> the battery to the starter, to odd suggestions. Most
> of which I discarded, but several ideas I went with,
> cause they posed no harm, and I did intend to make a
> full-restore of it anyhow. So, I changed the entire
> wiring harnesses(end to end w/exact repro's, as I am a
> good electrical man, just not that knowing of
> combustion engines.) I changed the voltage regulator,
> and heat sensors. One time I must have had the vacuum
> advance/Vacuum advance set wrong, cause the only way I
> could get her to run at all was to use a restrictor
> valve inline from carb vac to advance can. At that
> point I realized 24 degrees was no the right timing,
> no matter what the papers said.
>  Plus, to make it confusing even more, before I bought
> the car, she was rebuilt with forged pistons and
> Deeves rings(.020 0ver), and a stock cam, so I really
> didn't know if that would change my timing setup, or
> vacuum advance specs or what??? I just didn't know.
> I have tried several manners of adjusting the timing,
> be it total timing(Centrifigul+Base) and even checked
> total of advance. However, without know what the
> target I am shooting for is, I may be lost? Idle is
> close, but the best base timing I have found so far is
> 8 degrees BTDC, and still I cannot get her to run up a
> hill over 60 MPH, and really, not run at all, over
> that speed, like it is cutting out, chugging and or
> flooding???
> About to loose my mables, any idelas?
> All The Best Regards,
> Danny Barber
> Haw River, North Carolina
>