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GT Jets

  • Karma: +192/-0
Re: Headers vs thru hull
« on: February 25, 2017, 02:08:44 pm »
This has such a vast dynamic, it's hard to completely answer.

Three things stick out.

First, the obvious. In order to have through hull anything, the temperature needs to be quite low, this means mixing the exhaust gasses with cooling water. With reversion with aggressive camshaft grinds, this could be catastrophic, so it should be said that through hull exhaust, unless extremely exotic, limit camshaft choice.

Next, look at the temperature of the actual exhaust with a water jacketed header or log and an actual header, never mind the fact that an injected header puts water right at the outlet of the head (goes back to the reversion discussion).

Lastly, there is a pretty substantial argument for safety and sound, you can't get anywhere near a header pipe after a hard run, injected or dry. Whereas you can lay a forearm on the center riser or jacketed headers.

I know this does not answer where you were going, but should be enough to get the conversation started.

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  • Boat #1: 1992 Carrera 20.5 Elite (I/O bitches)
  • Boat #2: 19' Bubble deck Jet BBC Berkeley
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If i get some free time tonight at work, ill play with it and post it for everyone to see.

Time to man up and yank it John!  :banghead:
Ray

jamiemwedmore1234

  • Karma: +10/-0
Re: Headers vs thru hull
« Reply #1 on: February 27, 2017, 12:14:43 pm »

Thanks GT, great response as always. I'm pretty sure I'll be switching to thru hull and risers since I have a little one one the way.


Ya can't drink all day, if ya don't start in the morning
or you can go lightnings you can set them up for revision and still get good horsepower cool to the touch and still got a good sound to them cost around 2'000$$


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BCouey

  • Karma: +11/-0
Re: Headers vs thru hull
« Reply #2 on: February 28, 2017, 07:21:31 am »
I saw Eddie Calkins selling a set of lightnjngs on Facebook Texas hot boats for 700 bucks


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5150whiteboy

  • Karma: +24/-0
Re: Headers vs thru hull
« Reply #3 on: February 28, 2017, 12:04:07 pm »
Damn. I definitely need to keep my eyes open then!


Ya can't drink all day, if ya don't start in the morning
I have a set of marine power exhaust manifolds and risers if you end wanting to go that route. This k there made by Barr marine or something. There polished in color.

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5150WhiteBoy

5150whiteboy

  • Karma: +24/-0
Re: Headers vs thru hull
« Reply #4 on: February 28, 2017, 02:36:48 pm »
Got any pics?? Price??


Ya can't drink all day, if ya don't start in the morning
Shoot me a call or text 626 379 2524

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