SoCal Jet Boats
Tech Talk => Engine Mechanical / Electrical => Topic started by: el mojado on June 01, 2012, 02:11:50 AM
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Currently i have logs and snails. I'm considering running some headers. Why are there water lines in the headers? I also sometimes see guys running dry headers. Whats the difference? Its a stock gen v 454 with airgap intake. I think the headers would help it breathe better. Thanks for any replies.
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What you've posted brings up a lot of questions.
Do you want over transom headers or through transom headers? (The answer to this might bring up additional questions)
We run water to the headers for a couple reasons: The water helps cut down on the noise level a little. The water cools the headers a little to preserve the chrome finish (not enough to keep them from burning skin).
Dry headers run very hot and will discolor chrome in one outing, most guys that run dry headers have them jet hot coated or painted.
You will feel an increase in performance by adding headers but, you'll see bigger gains from other up grades (bigger intake, cam, carb...) by having the headers already installed.
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What you've posted brings up a lot of questions.
Do you want over transom headers or through transom headers? (The answer to this might bring up additional questions)
We run water to the headers for a couple reasons: The water helps cut down on the noise level a little. The water cools the headers a little to preserve the chrome finish (not enough to keep them from burning skin).
Dry headers run very hot and will discolor chrome in one outing, most guys that run dry headers have them jet hot coated or painted.
You will feel an increase in performance by adding headers but, you'll see bigger gains from other up grades (bigger intake, cam, carb...) by having the headers already installed.
Well said.. :thumbup:
To add to these remarks, there are many lakes where it is unlawful to run dry headers. also too, plan on tripling the noise, so there is a potential for taking all the performance gains you get by going to headers and offsetting them by having to run mufflers.
Food for thought. :thumbup:
GT