Aluminum manifolds and risers

[Pete9577]

Can anyone point me to a working website that sells aluminum manifolds and risers for a mercruiser v8. Google is only turning up websites that are down and/or don’t have a working phone number.

 

[Chris1956]

Do some research on them. The last time I checked it out, they were not very compatible with MerCruiser engines. The issue was heat expansion of the aluminum manifolds, versus the heat expansion of the cast iron heads of the MerCruiser.

I do not have a source, unfortunately.

 

[Scott Danforth]

The following have aluminum exhaust for small blocks, big blocks and LS motors

Stainless Marine
EMI
Hardin Marine
Lightning
Mercury Racing