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How can i check if my 82' 320/6 has been converted to run on unleaded?

it'll be fine, bmw's already had harded valve seats along time before other manufacterers......... if you had a 1980 mg metro it'd be a different story.

happy days, it'll be kept running on morrisons finest then haha. lets here the story then?

Wait a minute - does that mean I can run my 323i on bog standard unleaded without the Castrol valvemaster additive I keep buying at £15.00 per bottle??

Yeah, any alloy head car already has hardened steel valve seats. May just need to swing the dizzy a bit to alter the timming (minimal)

Jason

pjksutherland wrote:Wait a minute - does that mean I can run my 323i on bog standard unleaded without the Castrol valvemaster additive I keep buying at £15.00 per bottle??

Yes, but use superunleaded. 2002's don't need additive either. They've run unleaded in Germany for donkeys years.

What running normal unleaded cause any issues?

Might get a bit of pinking with regular.

maybe retard the timing 2-5 degrees? to be safe.

Good point. Prob better to run super anyway just never really thought of it.

I always run on premium fuel as I find it prevents the knocking. Shell V Power is wondeful stuff.

back in the 90s i ran both 323 and 320 on unleaded and it burnt the valves out in both
better top be safe than sorry, id be using the addative anyway

It's more likely the car was running lean and/or the ignition was too advanced, it's not like a 320 or 323 is a highly strung powerhouse.

That would be my guess as well. After running several K kms on leaded in the 1980's even the older engines have no issues running on unleaded.