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Re: Oil overpressure

In a message dated 1/25/98 3:06:16 AM, quk@isham-research.demon.co.uk writes:

>>      I intend to have the head reworked.  Been checking with Bob at Shine
>> Racing Service.  At the moment I am not planning to have the head ported,
>>just gasket matched - unless it is the concensus of several  Q-listers 
>>that porting is necessary.  My thought is that the porting would probably
>> move the power UP the rpm band, and there is not enough low end now.  
>>Comments welcome (or if you remember where you made the comments
>> before send me a date and I'll check the archives).
>Don't.  If you port the head, you have to tell the ECU to shove more fuel in 
>for a given boost.  I suspect reprogramming ECUs to do this (as distinct
>from simply ZAPping tables to allow more boost) is an esoteric skill.  
>I don't think you can buy it.

Hey Phil.......  this is a MC motor, with CIS.  Fuel is controlled by air flow
past a metering plate...... 

>>      Since the wear is so small I am thinking about simply re-honing the
>> cylinders and using news rings.  Will that work?
>Why re-hone?  Audi's cross-hatching is an oil retention mechanism - can
>you reproduce it?

in a word yes........  it's called Honing, Just how do you think Audi got that
"oil retention mechanism" on the cylinders in the first place??


Eric Fletcher S.O.C.
'87 5KCSTQ with WAY too many toys.....

According to Einstein, the faster you go, the longer you live.

St. Louis, MO