Is the 1.8 16V really 1800 cc or is it a little less?

[open.seas at verizon.net (Chris)]

Before you re-invent the wheel check around and see what other people in 
the class have done. Some people have been running the same class for 
years, have tried lots of configurations and settled on what they 
consider to be the best setup. When you are starting out, a lot of 
knowledgeable people will give you a lot of good advice. (As you become 
more competitive the information sources tend to dry up.) You don't have 
to do what others have done, you can pick and choose among their ideas 
and then add your own. But talking to others can save you a lot of time 
and money that might have been spent chasing down blind alleys.

Chris

Cory Langford wrote:
> 
> 
> 
> I can't change the engine internals except for maintenance.  Rules state
> that you can't over bore pistons, only hone out cyl. walls to within
> maintenance specs from the original production.  I am still looking into
> this, I am wondering if VW allowed a 1 size over as a standard maintenance
> routine.  That may get me a little (very little but everything counts
> doesn't it) extra.
> 
>    Also, I made a mistake on the decking of the head.  I can deck the head
>    as long as the compression ratio is not raised more than .5
> 
>    I am still looking into this class and seeing what I can do to the
>    engine/trany combo.  The course it will run on is primarily a cornering
>    course.  There are not long straights to over power another car (a
>    couple shorter ones) so the main focus is on braking and handling in and
>    out of the corners.  So I need to get something that has good torque to
>    get me out of those corners quickly.
> 
>    I still have to look into the TB and intake restrictions.  I thought of
>    a very long runner intake man on the 1.7 to get better torque, but I am
>    not sure if that is legal yet.
> 
>    Cory Langford
>    82/83/78 shells looking to become a race car 8^)
>    81 1.8S (for Supercharged)
>    78 1.9L 8V Turbo
>    86 2.1L 8V Turbo
>    68 Ghia
>    95 Eurovan
> 
> Brett Van Sprewenburg <brett@ataxxia.com> wrote on 03/10/2006 09:03:31 PM:
> 
>>
>> How about taking a stock 1.7L EN motor and getting .5mm oversize
>> pistons?
>> Using the handly engine displacement utility on Scirocco.org (which
>> would
>> have answered the orginal question by stating 1780.875), we can get a
>> displacment of 1737cc, which is nicely close to the 1750 max in the
>> targeted
>> class.
>>
>> 86.4mm stroke x (79.5mm stock bore + 0.5mm) 2nd oversize pistons of the
>> same compression ratio as stock which is 8.2:1.
>>
>> It is interesting to note that merely increasing the bore size will
>> slightly
>> increase your compression ratio, purely unintentionally though,
>> unless it
>> is compensated for within the shape of  the replacement piston.
>>
>>
>> ==Brett
>>
>>
>>
> 
> 
> ------------------------------------------------------------------------
> 
> _______________________________________________
> Scirocco-l mailing list
> Scirocco-l@scirocco.org
> http://neubayern.net/mailman/listinfo/scirocco-l