Difference in C/R between various blacktop 20V engines?

[RomanV]

Last night, I was having a discussion with a mate who was insisting that there was two different types of blacktop 20V engines, one was lower compression than the other.

I was insisting that it was nonsense. Who's right?

[thegreatestben]

I've only heard of two different types of silver top. Only one version of black top afaik.

[Mr Revhead]

only one compression for each type.
maybe he was saying blacktop when he should have been saying 20v?

[RomanV]

Nah, he was insisting that the BZG had a lower compression engine than the BZR :p

[Quirky]

arent the differences; apart from spoiler, tail lamps (exterior etc..) was that one was 5 speed and the other a 6 speed