At 08:13 AM 12/28/2009, v6spitfireguy@cox.net wrote:
>The pistons appear to be of stock dimensions and there is little if any
>ridge (that I can feel anyway) but they are the dished 7.50:1 compression
>variaty. I was wondering about replacing them with the 9.00:1, 76 federal
>flat top versions, but am a little concerned about possibly having to use
>premium fuel. Anybody used these in their 1500 and found this to be true?
I've got a 76, I assume it's 9:1. I use premium fuel.
The cost difference around here is about 12%. That means, at 25 MPG,
it costs an extra $12 to go a thousand miles. If I couldn't afford
that, I couldn't afford a Spitfire. I have used regular and
mid-grade, but not in the hottest part of the year. I didn't notice
any problems, though.
Of course, in sunny San Diego, it'll be a little more expensive. But
it's been my experience that higher octane fuel is available most
everywhere. You could store a bottle of octane boost in the boot for
emergencies.
Jeff Scarbrough 75 TR6 x 1, 76 1500 x 2, 78 1500 x 1, 80 1500 x 0.5
http://www.fishplate.org/vehicles/
Corrosion Acres, Georgia #354
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