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New Exhaust Manifolds

martinarcher

By martinarcher,
in Modifications & Accessories

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martinarcher

martinarcher

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Posted (edited)

Yes, original was 3.0" on the Mercruiser in my boat. You will want to make sure no diameter drops below 3.5" in the entire system in order to take full advantage of the manifolds, and I made sure I was at 4" diameter all the way to the tail since water is injected at the end of the riser which takes away some of the effective area. I also set up an H pipe to add some torque.

Nice. I just checked my rubber hose and it's 3". Dang me for not measuring ahead of time. Oh well, time to upgrade the rest of the exhaust. LOL.gif

Any pics of your set-up? I'd love to see the "H" pipe set-up. I love that idea as it usually nets nice torque upgrades in the Mustangs and other V8 cars.

Edited by martinarcher
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