group 4 exhaust on a 1.3s?

[Christopher Adams]

On ebay at the moment is a group 4 exhaust.

Just wondering if this would offer any benefits on my 1.3s, or do any of the following cause problems:
- Is the bolt pattern and port location the same on the 1.3 and 1.6 engines?
- Does the bigger diameter tubing reduce scavange effect and actually have a negative impact on performance?


For those interested in the item, here is the URL

http://cgi.ebay.com/Lancia-Fulvia-1600H ... dZViewItem

Chris

[william van der Sman]

The manifold will fit but not improve your car. The diameter of the branches is bigger than the size of the ports in your 1300 head. The speed of the exhaustgasses will drop and scavence will suffer. You also need the rest of the group 4 exhaust as this 4 in 2 does not have the flange your manifold has. If your car is a series one the fitment of a series 2 system (with bigger maintube) will improve flow.