3258 Mercruiser Bravo II(39)s and bellows/exhaust tube-gctid401177

[Guest]

Hi guys,

Long time since my last post but hoping to make it more regular from now on.

We've just had the exhaust bellows done on our 3258 bravo II's and the mechanic fitted exhaust tubes instead of the full bellows. He advised me that this is recommended and typically apart from a little extra noise the exhaust tubes give more hp and allow the engines to breath better.

Does anyone run the exhaust tubes and not the bellows on their 3258? Incase people arent sure on what exhaust tubes are...........instead of having a bellow that clamps to each end the exhaust tube clamps to the transom and the drive slides over it or close to it when trimmed down. Mine don't seem to slide over the drive, they come close but dont slide right over.

Thanks

[ksanders]

The tubes are a pretty common practice for high HP engines and the Bravo drives.

They put them in when we repowered our old 2859 with a 496 mercruiser a few years ago.

[Guest]

good to know. They appear to working well on the 3258. They are definitely a little louder at idle then the enclosed bellows.