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Go Back   WakeWorld > >> Boats, Accessories & Tow Vehicles Archive > Archive through May 01, 2007

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Old     (jheado)      Join Date: Sep 2006       04-27-2007, 8:09 AM Reply   
I am thinking about replacing my 2 barrel carb with a 4 barrel. I was wondering if any one has done this and if you noticed any significant change? Thanks for any comments
Old     (peter_c)      Join Date: Sep 2001       04-27-2007, 8:18 AM Reply   
On your lawnmower?

You can, but the jetting needs to be dead on or you could burn up your motor.
Old     (jheado)      Join Date: Sep 2006       04-27-2007, 8:30 AM Reply   
Its a moped with a indmar 5.7L. Thanks for the input.
Old     (peter_c)      Join Date: Sep 2001       04-27-2007, 9:20 AM Reply   
You would then need to get the carb, and intake that came with the same engine. I would also make sure the camshafts are the same. Of course the timing curve also comes into play then too. Otherwise, as I said above, you could damage your engine.

You will gain power, with your moped, and lose fuel economy, especailly wakeboarding, with a loaded boat. With a car you can actually gain fuel economy by going to a 4 barrel. I have done it tons of times in automotive applications, but never in a boat. The big difference is boats are constant load, so damage happens faster, and mixture is more critical.

Your welcome
Old     (boatguy)      Join Date: Mar 2006       04-27-2007, 10:49 AM Reply   
I have a carb and intake for a Indmar 5.7. I also have the rest of the engine if you need any other spare parts (distributor, alt, pulleys, coil, etc...) I will cut you a smokin deal just to get the stuff out of my way. 865-755-4333 or Jwade@skierschoice.com

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