Thank you Peter. I have one supercharged engine to consider.Peter Connan wrote:Clem, yes definately.
The allowable compression ratio for low-octane fuel drops a lot lower (I think about 7:1).
4.8 93 vs 95 at Reef Altitudes
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Clem
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Re: 4.8 93 vs 95 at Reef Altitudes
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dieselfan
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Re: 4.8 93 vs 95 at Reef Altitudes
Just to update this thread, according to my Fuelly log I can't see any measurable difference between 93 and 95. Just too many other factors.
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Clem
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Re: 4.8 93 vs 95 at Reef Altitudes
I'm wondering whether high compression pistons are available for the 4.8 and whether the fuel price would make it worth one's while fitting them. A friend of mine had a Land Rover Defender 147" (yep, that's right) with a Rover 3.5 V8 with 10.5 pistons and that thing hauled ass even with a big military trailer behind it!
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tour de frans
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Re: 4.8 93 vs 95 at Reef Altitudes
Our Fuel wont allow for higher compression on the 4.8 
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Tour de frans - het niks met n bicycle uit te waai nie.
Gu y61 pickup- 6.2L chevy
Tour de frans - het niks met n bicycle uit te waai nie.
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