RE: SER1 Unleaded petrol?

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Thank you for this info James. I'm pleased I asked, as South Africa is busy
moving over to cleaner fuels at this very moment. Looks like I will have to
use lead replacement fuel in the S1.

Regards
KC

> -----Original Message-----
> From: series1-host@xxxxxxxxx.xxx [mailto:series1-host@xxxxxxxxx.xxx]On
> Behalf Of James Ferguson
> Sent: 09 January 2006 08:17
> To: series1@xxxxxxxxx.xxx
> Subject: Re: SER1 Unleaded petrol?
>
>
> KC wrote:
> > I was under the impression that the side-valve engines (2L
> Series 1 and 2.6L
> > later vehicles) can run on unleaded fuel, but not the 2.25L
> engines. Is this
> > not correct?
>
> No.
>
> They will all _run_ just fine on unleaded fuel, but none of the above
> mentioned have hardened valve seats, and therefore are likely
> to suffer
> valve seat erosion with prolonged use of unleaded and/or high
> speed running.
>
> I believe the V8 is the only engine fitted to Land-Rovers
> that can run
> on unleaded fuel without deleterious effects. This is because
> the V8 has
> an aluminium head and therefore had to be fitted with hardened valve
> seats from new.
>
> This web site gives a great explanation of the principles of
> valve seat
> erosion:
> http://www.pumaracing.co.uk/unlead01.htm
>
> James


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