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8 & 10 cyl Bristol cars Type 407 onwards - restoration, repair, maintenance etc

Typical idling speed for a well-warmed late '70s V8 engine?

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Old 20-02-09, 07:53 PM
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Default Typical idling speed for a well-warmed late '70s V8 engine?

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Old 20-02-09, 09:05 PM
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My Britannia approx 560RPM in neutral 500 in drive idling
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Old 21-02-09, 10:11 AM
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Never measured it accurately, but my 603 will tick-over below 400. Doesn't sound nice so low so a rev-counter needle's width above 500 is normal. That's with the AFB carb - with the old Thermoquad, it wouldn't tick-over cleanly below about 800 - but that leaked fuel and air in equal quantities!

David
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