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Mckoky
01-31-2012, 04:34 AM
Hello. I need to change the exhaust cellector of my Moomba LSV 08. The engine is a Indmar Assault 325 MPI.
What exhaust I need 3" or 3.5"?
How could I know when them have to be remplaced??

*Excuse my english. Im from Spain. Thanks

mmandley
01-31-2012, 05:22 AM
Hello. I need to change the exhaust cellector of my Moomba LSV 08. The engine is a Indmar Assault 325 MPI.
What exhaust I need 3" or 3.5"?
How could I know when them have to be remplaced??

*Excuse my english. Im from Spain. Thanks

Not exactly sure what part your refering to.

On the 08 LSV with the Idmar 5.7 325hp engine you have 2 exhaust manifolds attached tot he engine block, from there it has a tube <left and right> respectivly, both of them goto a Muffler that sits at the rear of the boat. It looks like a tube and sits right above infront of the eingine. From the muffler 2 tubes drop down to the hull and exit threw the boat hull. On the end og the tubes are flapers. They are rubber flaps designed to allow the exhaust to vent out of the pipes but not allow water to enter the exhaust if you have a wave hit the back of the boat, or you are traveling in reverse.

Please explain what part it is you need to replace? Nothing on the exhaust should need to be replaced on a boat this new unless you use it in Salt water.

Mckoky
01-31-2012, 07:41 AM
13270

This is the parts. I use it in salt water.

squeeg333
01-31-2012, 06:21 PM
skidim.com has all of those parts in stock (exhaust manifold, risers, gaskets, and all bolts necessary). They also have the muffler replacement if needed.

http://www.skidim.com/products.asp?dept=1068

instead of the papter gasket for the exhaust manifold gasket, you can use a high-temp form-a-gasket if desired. That's what Indmar uses in the factory, have for years - you'll see that when you pull the manifold off of the engine.

Torque on the exhaust manifold bolts is 18 to 24 ft-lbs and on the riser bolts it is 18 to 22 ft-lbs.

squeeg333
01-31-2012, 06:24 PM
Oh, and if you use your boat in salt water, you should be able to flush the engine with fresh water (fake-a-lake) after each time out and help prevent having to replace these parts, as well as many others down the road.

Mckoky
02-01-2012, 02:51 AM
How could I flush the engine with fresh water?
And the riser is 3" or 3.5"??

Thanks

Mckoky
02-01-2012, 03:34 AM
How could I flush the engine with fresh water?
And the riser is 3" or 3.5"??

Thanks

http://www.subeimagenes.com/img/la-foto-2-162525.html
http://www.subeimagenes.com/img/la-foto-4-162526.html
http://www.subeimagenes.com/img/la-foto-5-162527.html

KSmith
02-01-2012, 11:13 AM
How could I flush the engine with fresh water?
And the riser is 3" or 3.5"??

Thanks

To flush engine with fresh water they sell an attachment often called a "fake lake" but more accurately called an Inboard Engine Adjustable Motor Flusher. Such as
http://www.overtons.com/modperl/product/details.cgi?pdesc=Inboard-Engine-Adjustable-Motor-Flusher&i=74920&aID=601L10&merchID=4006

The riser should be 3.5 according to skidim

Do you not have access to the boat? I can be measured at the round end of the riser. I would double check what is installed currently, but it should be 3.5.

kaneboats
02-01-2012, 11:42 AM
You can make a homemade "fake a lake" using a hose connector and a toilet plunger. Here's a link to one:

http://www.moomba.com/msgboard/showthread.php?7449-DIY-fake-a-lake

You should be flushing with fresh water after every use.

Mckoky
02-02-2012, 11:02 AM
Yes, I have a Perko "FlushPro". But the previous owner didnt use it.
I need wash the cooling circuit because it have mud dirt to the river. Do you have any idea???

kaneboats
02-02-2012, 11:49 AM
The flushing is to wash away the salt water after use in salt water. The salt is extremely corrosive. Flushing with fresh water after use while it is still wet is the only way to remove most of the salt.

squeeg333
02-02-2012, 07:48 PM
Depending on how much mud/dirt you have in the system, you should be able to flush it out. Hook the FlushPro up to a garden hose, turn the hose one, and fire the engine up. Let it run for a while to flush the cooling system. I would flush the engine now, replace the exhaust manifold, exhaust riser, and all gaskets, and then re-flush it. Then, after each use in salt water, give it another flush to get the corrosive salt off of the interior of your cooling system.

If you do have a lot of sediment in the water you normally use the boat in, I would also pay close attention to your thermostat. If there's a lot of grit in the water, you could potentially chew up your impellar. I might recommend checking it often.