Fuel

[Aleksander Mierzwa]

At 12:31 00-11-23, quk at isham-research.freeserve.co.uk wrote:

>>> Will WR run on Normal? What about KG? Without pinging, that is.
>
>Wasn't the question.  You stated that the KG, MB and 1B required 98 RON.
>They don't.  

I stand corrected. 

>The KG is a special case because there are two versions - with and
>without emission controls.  I believe (but I'm not sure) that 98 RON/ROZ
>is recommended for the unmodified KG.  It certainly is for the WR, which
>is technically a problem because 98 RON is no longer available in the
>UK.  It was always hard to find, but our 'Super Unleaded' is now defined
>as 97 RON.

That's what I was trying to explain. WR and KG won't run correctly on 92
RON fuel. But all cars sold in the USA are required to. So WR and KG (and a
number of N/A engines) had to be detuned to accept lower octane fuel.
That's why WX and KH have lower output.
Later engines with knock control (MC,MB,1B,NF etc.) will run OK on 92 RON
even if the recommended fuel is 95 or even 98. That's why there's no hp
difference between US and European MC.

--
Aleksander Mierzwa
Warsaw, Poland
87 5KT