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Dual vs Single Carb

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tgossett22

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« on: May 14, 2014, 10:30:13 AM »
Can you guys give me some input on the benefits of using a dual carb set up vs having a single? Are there HP/Torque gains? High end vs. Low end? I'm fairly new to boating but I'm in love!! I'm set on a tunnel ram set up. I'm moving from logs to Bassett thru transoms....and a few other changes.

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laveyjoel

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« Reply #1 on: May 14, 2014, 11:21:45 AM »
Good looking family boat, underline family. Your hull(and mine) are not speed boats, they are cruisers. Whats nice is they are "turn key" gas and go....no idle issues, very low maintanence. For the several thousand dollars of exhaust, tunnel ram, carbs, ect....you will not see a great speed increase. Major pump work would be needed also$$$$.

Just my opinion but leave her alone....

rush1

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« Reply #2 on: May 14, 2014, 12:56:21 PM »
Your float looks like mine x2 on leaving it alone there cruisers and that's what they do best.

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tgossett22

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« Reply #3 on: May 14, 2014, 02:09:37 PM »
Thanks guys! Your feedback is definitely .appreciated and noted! I will mention that I'm NOT looking to do 80mph...and definitely not trying to kill any reliability in the boat. Just a slight increase in power to move the fam around....and to be perfectly honest I just love the visual effect of an uncovered motor. So the changes I'm looking for are more cosmetic than performance. Just wanted to know benefits if any.

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tgossett22

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« Reply #4 on: May 14, 2014, 02:10:18 PM »
Nice boats btw gentleman! Love this style!

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tpltrbl303

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« Reply #5 on: May 14, 2014, 03:57:06 PM »
I only have 1 carb(sort of) and an engine cover


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tgossett22

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« Reply #6 on: May 14, 2014, 05:06:16 PM »
Ha! You got a lil extra icing on your cake though! A lil jealous! Think I'm gonna partly expose the engine like that though....probably not a complete uncover.

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rush1

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« Reply #7 on: May 14, 2014, 07:02:15 PM »
Yeah that does look great

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laveyjoel

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« Reply #8 on: May 14, 2014, 07:37:23 PM »
I only have 1 carb(sort of) and an engine cover


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That motor is worth more than his complete boat, not to count pump mods.........bad advise IMHO.

His hull is a 60 mph at best..... 10k in mods for it is insane.....

What do I know......"To each his own"....


tpltrbl303

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« Reply #9 on: May 14, 2014, 07:40:00 PM »
That motor is worth more than his complete boat, not to count pump mods.........bad advise IMHO.

His hull is a 60 mph at best..... 10k in mods for it is insane.....

What do I know......"To each his own"....
I agree, keep the pump tight and enjoy water.

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tgossett22

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« Reply #10 on: May 14, 2014, 10:04:15 PM »
To be honest I see a lot of guys with rigs that have more worth in their engines than the rest of the boat...I've come to see that as a normal part of the game! But you can say that with a lot of cars too! Like you said...to each his own! As long as we are out there having fun!

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« Reply #11 on: May 14, 2014, 10:22:34 PM »
What's the motor like now?Is it stock? Has it ever been rebuilt with any performance modifications?
The tunnel ram might hurt your performance out of the hole and just waste gas.
Yeah, they look cool. But unless the rest of your motor is built for similar performance, it probably won't be worth it.

A good exhaust to help it breath better than the logs and a good pump.

If the motor is running good with a decent amount of power,
I would look into ways of improving the pump, like maybe an inducer.


tgossett22

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« Reply #12 on: May 15, 2014, 08:14:55 AM »
What's the motor like now?Is it stock? Has it ever been rebuilt with any performance modifications?
The tunnel ram might hurt your performance out of the hole and just waste gas.
Yeah, they look cool. But unless the rest of your motor is built for similar performance, it probably won't be worth it.

A good exhaust to help it breath better than the logs and a good pump.

If the motor is running good with a decent amount of power,
I would look into ways of improving the pump, like maybe an inducer.

Thanks Dave. The motor is a stock 5 litre Indmar. I did think an upgrade in exhaust would help to let it breathe better. And that was really the reason for my post. Definitely don't want to hurt the performance just trying to get a certain look. And I also wasnt trying to do 80mph blasts up and down the river either.

What else can be done to the pump? Impeller change? It's a stock Berkeley on there now.....doesn't even have a diverter....which is in the future plans as well.

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rush1

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« Reply #13 on: May 15, 2014, 09:30:31 AM »
The diverter first. It's a must have,  then the exhaust with out exhaust your waisting your money.

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bigred88

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« Reply #14 on: June 10, 2014, 01:03:39 AM »
tunnel ram on a 5.0 ya go for it

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Flusher

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« Reply #15 on: June 10, 2014, 05:32:51 AM »
Everything that everybody above said is true about the headaches of a TR setup.  Another thing to think about, if you look at PSCA, most of the quickest and fastest cars are now running a single carb.  Manifold technology has come a long way in the last ten years and there are some really impressive conventional head BBC manifolds from Edelbrock like the Super Victor II and the Super Victor CNC, by Reher-Morrison, both of which can support over 1,000 horsepower.  The added weight and complexity just doesnít make sense.

HOWEVER, I know what it is like to want a TR for the cool factor.  Anything can be made to work with enough time, effort, and money.  The money also doesnít stop after all the parts are purchased.  As was mentioned above, it will use more fuel and you will want increased horsepower to go along with the looks, so that means supporting parts like cam, heads, and compression which all increase operating expenses.

Bottom line, it is your boat and your money.  Do what makes you happy.  Just understand the expenses and pitfalls associated with every compromise and formulate a plan that works best for your intended use.

If you do decide to go the TR route, choose one with the longest runners with the smallest cross-section so that intake charge velocity is high.  Donít go crazy on carb size, most people canít tell the difference between a 450 vacuum secondary and an 850 double pumper.  Anything is possible.

Here is a pic of my family station wagon.

Cheers,

Joe
"I want to roll with my brother Joe" - Joe Bateman - January 29, 1950 ~ November 27, 2013

icecreaman

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« Reply #16 on: June 10, 2014, 07:35:54 AM »
Everything that everybody above said is true about the headaches of a TR setup.  Another thing to think about, if you look at PSCA, most of the quickest and fastest cars are now running a single carb.  Manifold technology has come a long way in the last ten years and there are some really impressive conventional head BBC manifolds from Edelbrock like the Super Victor II and the Super Victor CNC, by Reher-Morrison, both of which can support over 1,000 horsepower.  The added weight and complexity just doesnít make sense.

HOWEVER, I know what it is like to want a TR for the cool factor.  Anything can be made to work with enough time, effort, and money.  The money also doesnít stop after all the parts are purchased.  As was mentioned above, it will use more fuel and you will want increased horsepower to go along with the looks, so that means supporting parts like cam, heads, and compression which all increase operating expenses.

Bottom line, it is your boat and your money.  Do what makes you happy.  Just understand the expenses and pitfalls associated with every compromise and formulate a plan that works best for your intended use.

If you do decide to go the TR route, choose one with the longest runners with the smallest cross-section so that intake charge velocity is high.  Donít go crazy on carb size, most people canít tell the difference between a 450 vacuum secondary and an 850 double pumper.  Anything is possible.

Here is a pic of my family station wagon.

Cheers,

Joe

I love the vest!  That's a great picture.  Blown, injected cruiser and a 2 dollar, orange throw away.  I think your daughter's probably saying, "Seriously Dad, I'm not riding with you if you're wearing that vest!"  Safety first!  Classic.

jamiemwedmore1234

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« Reply #17 on: June 10, 2014, 10:00:12 AM »
Single carb all the way you want looks get a scoop you want reliability go with 1 big one ! I run a hp 950  just don't go bigger than what your motor can handle and if and as far as airflow through transom headers lightings are the shit $$$$$$$$


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tgossett22

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« Reply #18 on: June 20, 2014, 08:50:46 PM »
Everything that everybody above said is true about the headaches of a TR setup.  Another thing to think about, if you look at PSCA, most of the quickest and fastest cars are now running a single carb.  Manifold technology has come a long way in the last ten years and there are some really impressive conventional head BBC manifolds from Edelbrock like the Super Victor II and the Super Victor CNC, by Reher-Morrison, both of which can support over 1,000 horsepower.  The added weight and complexity just doesnít make sense.

HOWEVER, I know what it is like to want a TR for the cool factor.  Anything can be made to work with enough time, effort, and money.  The money also doesnít stop after all the parts are purchased.  As was mentioned above, it will use more fuel and you will want increased horsepower to go along with the looks, so that means supporting parts like cam, heads, and compression which all increase operating expenses.

Bottom line, it is your boat and your money.  Do what makes you happy.  Just understand the expenses and pitfalls associated with every compromise and formulate a plan that works best for your intended use.

If you do decide to go the TR route, choose one with the longest runners with the smallest cross-section so that intake charge velocity is high.  Donít go crazy on carb size, most people canít tell the difference between a 450 vacuum secondary and an 850 double pumper.  Anything is possible.

Here is a pic of my family station wagon.

Cheers,

Joe
That's a beautiful ride!!

Thanks guys for the info!

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Flusher

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« Reply #19 on: June 24, 2014, 08:04:50 PM »
That's a beautiful ride!!

Thank you   :)
"I want to roll with my brother Joe" - Joe Bateman - January 29, 1950 ~ November 27, 2013

rush1

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« Reply #20 on: June 24, 2014, 08:17:34 PM »
Everything that everybody above said is true about the headaches of a TR setup.  Another thing to think about, if you look at PSCA, most of the quickest and fastest cars are now running a single carb.  Manifold technology has come a long way in the last ten years and there are some really impressive conventional head BBC manifolds from Edelbrock like the Super Victor II and the Super Victor CNC, by Reher-Morrison, both of which can support over 1,000 horsepower.  The added weight and complexity just doesnít make sense.

HOWEVER, I know what it is like to want a TR for the cool factor.  Anything can be made to work with enough time, effort, and money.  The money also doesnít stop after all the parts are purchased.  As was mentioned above, it will use more fuel and you will want increased horsepower to go along with the looks, so that means supporting parts like cam, heads, and compression which all increase operating expenses.

Bottom line, it is your boat and your money.  Do what makes you happy.  Just understand the expenses and pitfalls associated with every compromise and formulate a plan that works best for your intended use.

If you do decide to go the TR route, choose one with the longest runners with the smallest cross-section so that intake charge velocity is high.  Donít go crazy on carb size, most people canít tell the difference between a 450 vacuum secondary and an 850 double pumper.  Anything is possible.

Here is a pic of my family station wagon.

Cheers,

Joe
yeah that's easy to say when you have a blower on your motor lol

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