Boris113 Posted November 2, 2017 Share Posted November 2, 2017 Can any of v8 gurus on here advise please? I was talking to a colleague the other day and he was asking whether his 3.5 Efi V8 would have an unleaded head or should he keep putting lead additive in the tank which he has been doing since the death of 4-star in UK? My understanding was that all UK spec Discoverys had unleaded heads however this one is ROW spec, would that make a difference? The vehicle is a very original LHD 3 door Discovery however he bought it 2nd hand in Kuwait circa 1994 then drove it to UK and registered it so the exact production date is a bit of a mystery. It has 200tdi spec lights and we know it's an early one because the brake caliper bolts on the axles are imperial and the engine is on V belts, at a guess it's late 1989 or early 1990. The engine number starts 24D14_ _ _ D which according to the Rimmer Bro's website is either 1990 efi Discovery or 86 onwards RRC manual. https://www.rimmerbros.co.uk/content--name-Rover-V8-Engine-Numbers Thanks, Harry Quote Link to comment Share on other sites More sharing options...
Davo Posted November 2, 2017 Share Posted November 2, 2017 Any Rover V8 from that era would be able to use unleaded. I can't see that ramshackle factory back then making specific valve seats for specific markets. I do have Des Hammill's book with something about this in it, if you're interested. Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted November 2, 2017 Share Posted November 2, 2017 Aluminium head means hard valve seats, it will be fine. Quote Link to comment Share on other sites More sharing options...
garrycol Posted November 3, 2017 Share Posted November 3, 2017 As mentioned - any RV8 from any era runs fine on unleaded. Quote Link to comment Share on other sites More sharing options...
Boris113 Posted November 3, 2017 Author Share Posted November 3, 2017 Brilliant, thank you for the quick responses! I'll let him know. Harry Quote Link to comment Share on other sites More sharing options...
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