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sfedock

  • Karma: +0/-0
Mantra exhaust question
« on: April 28, 2015, 03:12:06 AM »
I'm working on a 1979 19' mantra boat. I have a sbc motor and now I'm looking for an exhaust. I love in Indiana and I have to go with through the transom exhaust. What's out their on a budget. What's out their? Thanks for your help.
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shumzzr

  • Karma: +3/-0
Re: Mantra exhaust question
« Reply #1 on: April 28, 2015, 08:16:49 AM »
You want a set of harden marine logs. There going to be cheaper then a set of water injected headers and definitely cheaper then a set of water jacketed headers. The trick is finding them for a small block seeing how most JetBoats run big blocks. I have a set of BBC logs with the snails that I would sell.
But on a budget that's going to be your best bet and easy to setup.
Just my 2 cents. Good luck👍


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  • Boat #1: 1983 California Performance 19'
  • Boat #2: 1990 Dana mini 19'
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ShumzzR AKA Shawn

mobboss

  • Karma: +15/-0
Re: Mantra exhaust question
« Reply #2 on: April 28, 2015, 08:37:00 AM »
He's right. I'd start by looking on eBay they do come up for an sbc every once in a while.

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  • Boat #1: boat less
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sfedock

  • Karma: +0/-0
Re: Mantra exhaust question
« Reply #3 on: April 28, 2015, 08:42:03 AM »
Thanks for your help.


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GT Jets

  • Karma: +192/-0
Re: Mantra exhaust question
« Reply #4 on: April 28, 2015, 08:50:49 AM »
If you are on a budget but still want some performance, look into a set of center riser manifolds.  They can typically be had for under a couple hundred bucks used and support up to 350hp. Mercruiser and Volvo Penta made the best ones for a small block.

Here's an ad for brand new chit...

http://m.ebay.com/itm/121486769215
  • 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

sfedock

  • Karma: +0/-0
Re: Mantra exhaust question
« Reply #5 on: April 28, 2015, 08:54:33 AM »
I've seen those on eBay and didn't know if I could use those on my boat motor. I'm new to jet boats and don't know what to really look for. I've got the hull and now a motor.


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