[6pack] Compression boost

[Kendall Larsen]

For what it's worth on the economics of premium...
Regular: $4.53/gal
Premium: $4.71/gal
10,000 miles a year
18 mpg
556 gal/year
Totals:
Regular $2,517
Premium $2,617

Or a difference of $100/yr
Or 4%.....

$0.20 extra on a gallon of gas isn't what it used to be

Kendall
San Clemente, CA


----- Original Message ----
From: "Foster, Stan" <stan.foster at hp.com>
To: Alan Salvatore <tr6parts at charter.net>; "triumphs at autox.team.net" <triumphs at autox.team.net>; 6pack <6pack at autox.team.net>
Sent: Friday, June 13, 2008 8:08:44 PM
Subject: Re: [6pack] Compression boost

My understanding is that you can go at least as high as 9.5:1 or perhaps 9.6:1
and still be fine on regular gas. At least I hope so, I had my head and block
machined for 9.6:1 based on that assumption. It would not ruin my whole day if
I had use a higher octane however.

Stan

-----Original Message-----
From: 6pack-bounces+stan.foster=hp.com at autox.team.net
[mailto:6pack-bounces+stan.foster=hp.com at autox.team.net] On Behalf Of Alan
Salvatore
Sent: Friday, June 13, 2008 10:56 PM
To: triumphs at autox.team.net; 6pack
Subject: [6pack] Compression boost

I am in the process of rebuilding my 76 motor.
I had it bored out 20 over and got a G2 cam, aluminum flywheel.
I couldn't decide what to do with the head.  I just left it at the machine
shop and am going to have it milled for
9 to 1 compression.
The nice thing about the 7.5 to 1 compression was that it ran on regular gas.
Not to sure what effect the 9 to 1 will have on gas requirement;
or if I just should have  bumped the compression even higher.

Al