Reference your comment number (2), an additive that increases octane (and
these do, indeed, exist) will have no beneficial effect on the unleaded
problem. If one does not want to have the head modified with hard exhaust
valve seats (to prevent valve seat recession, the major problem caused by
the use of unleaded fuel), one must use an additive that contains a lead
substitute - and which has no bearing whatsoever on the octane level of the
resultant fuel mix.
Lawrie
British Sportscar Center
-----Original Message-----
From: Harvinder Azad <harv_azad@hotmail.com>
To: tdelve@mathworks.com <tdelve@mathworks.com>; mgs@autox.team.net
<mgs@autox.team.net>
Date: Friday, November 26, 1999 6:11 AM
Subject: Re: Leaded/Unleaded
>You basically have two choices:
>1. You have a head conversion which means the valve seats get replaced.
>This usually costs around £200. There are plenty of places that now
provide
>new heads which have the seats already replaced.
>2. You can use an additive which I believe increases the octance level to
>avoid pinking.
>
>Harv
>Midget 69
>
>
>>From: Trefor Delve <tdelve@mathworks.com>
>>Reply-To: Trefor Delve <tdelve@mathworks.com>
>>To: mgs@autox.team.net
>>Subject: Leaded/Unleaded
>>Date: Fri, 26 Nov 1999 08:41:36 -0500
>>
>>All,
>>
>>This thread must have been run a thousand time, so forgive me for asking
>>again.
>>
>>I have recently acquired a 74 chrome bumper B. What do people do about
>>running these cars with unleaded?
>>
>>Thanks,
>>
>>Trefor
>>
>
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