RE: [ihc] Intake manifolds

["Ed Sohm" <idaemes@xxxxxxxxxx>]

Yep, I understand elevation's effect on pinging.  I live at about 1100'
I guess I'll dial it up and see, especially since I am running a little
rich.  Does your Terra have a 392 or 345? I would love to have a timing
control so I could really "dial" it up and down.  

Thanks,

Ed





-----Original Message-----
From: John Hofstetter [mailto:hofs@domain.elided] 
Sent: Tuesday, November 04, 2003 1:26 PM
To: Ed Sohm; 'ihc-digest'
Subject: RE: [ihc] Intake manifolds


At 11:40 AM -0600 11/4/03, Ed Sohm wrote:
>I'm so darn scared of pinging, probably unreasonably so, that I
hesitate
>to advance any more.  Do you know how quiet for motor noise and loud
for
>wind noise a Travelette can be? 
>
>I'll try some more advance.  I may just dial it way up so I am sure
what
>a ping sounds like and then come back down.

Ed,

You probably already know this, but the pinging is a function of a 
whole lot of factors. Elevation is one of these factors.

When Steve S. talked about running his engine on premium, he wouldn't 
have to use premium if he lived at 7000 feet.

I have the variable timing control on my Terra and in the CA Central 
Valley, I have to run the engine at about 0 degrees advance. I run it 
at about 13 degrees early above 3000 feet, and here at home at 2000 
feet, I run it at about 6 degrees early.

And, my Terra is a pinger. Probably the worst we've ever talked about 
on the digest. EFI didn't change that, Mallory ignition didn't change 
that, but going with the Autolite 85 plugs and the Magnacor plug 
wires seemed to help the pinging and a number of other ignition 
problems that I was having, the most noticeable of which was the 
kicking back against the starter when trying to start the engine.

Joel B. told me it didn't take a rocket scientist to figure out that 
I was getting cross firing, but he was wrong, in this case it did 
take a rocket scientist. <g>

John Hofstetter
t