Heads up to those with the 6.2 Raptor engine in their boats

[spectras only]

My friend has this 23.5 Supra wake boat with the Roush 6.2 Raptor engine, 575 HP, cool. Few days ago, he calls me he sees water pouring into the bilge,so cuts the rpm and limps back to his dock. I put my head into the engine bay, he starts the engine and I immediately find the source on the starboard side exhaust elbow area, after the catalytic converter at the high temperature silicon exhaust coupler hose. There's almost 3" long split where the water comng out and felt the air pushing out. Removed the four hose clamps and the hose comes out easily even though there's only about 2" between the upper and lower exhaust manifold pipes. This silicon hose is extremely thin IMO. I think Indmar chosen this special bellows hose for its flexibility and ease of replacing it. There's no burn marks inside of the bellows, so it shouldn;t have failed with the low hours on this boat. I always used the reinforced greenline exhaust hoses for jet and v drive boats, lasting for years, providing there's always water to cool them.
This picture shows different hoses [ orange in colour ] that looks to go replacing the OEM black rubbery silicon ones he has. What do marine tech say on this board?

 

[HST4ME]

LOL Ford....







Buy the orange hoses.

 

[Lumpy]

Did you say...."catalytic converter"?

 

[2Driver]

Did you say...."catalytic converter"?

 

[4Waters]

Did you say...."catalytic converter"?

Yup

 

[4Waters]

I thought anything over 500hp wasn't required to have cats.

 

[Shlbyntro]

My friend has this 23.5 Supra wake boat with the Roush 6.2 Raptor engine, 575 HP, cool. Few days ago, he calls me he sees water pouring into the bilge,so cuts the rpm and limps back to his dock. I put my head into the engine bay, he starts the engine and I immediately find the source on the starboard side exhaust elbow area, after the catalytic converter at the high temperature silicon exhaust coupler hose. There's almost 3" long split where the water comng out and felt the air pushing out. Removed the four hose clamps and the hose comes out easily even though there's only about 2" between the upper and lower exhaust manifold pipes. This silicon hose is extremely thin IMO. I think Indmar chosen this special bellows hose for its flexibility and ease of replacing it. There's no burn marks inside of the bellows, so it shouldn;t have failed with the low hours on this boat. I always used the reinforced greenline exhaust hoses for jet and v drive boats, lasting for years, providing there's always water to cool them.
This picture shows different hoses [ orange in colour ] that looks to go replacing the OEM black rubbery silicon ones he has. What do marine tech say on this board?

View attachment 909272

I have honestly not seen this issue with a single one yet. Im Hoping it's just a fluke as I would like to see more Fords making a comeback in the boat world.

The see water strainers on these engine are a known issue though. If you have one, I recommend replacing it with the new updated version. ( its the exact same but has twice as many threads on the cap to help prevent stripping)

 

[Shlbyntro]

I thought anything over 500hp wasn't required to have cats.

Not required if below a certain production number, but many manufactures are doing it anyway. If you look to the Ilmor 7.4L MV8, it is the same way. Rated just over 500hp and still has ski boat styles cats. Also has a severe and chronic overheating condition (i blame it on the cats)

 

[lbhsbz]

LOL Ford....

Beat me too it

 

[Ziggy]

LOL Ford....


Buy the orange hoses.

Honestly, what does Ford have to do with someone putting this motor in a boat other than manufacturing the motor?

 

[Shlbyntro]

Honestly, what does Ford have to do with someone putting this motor in a boat other than manufacturing the motor?

Nothing, but what does Chevy have to do with either? But they did allow Indmar to license the Raptor name and logo....

 

[LargeOrangeFont]

Not required if below a certain production number, but many manufactures are doing it anyway. If you look to the Ilmor 7.4L MV8, it is the same way. Rated just over 500hp and still has ski boat styles cats. Also has a severe and chronic overheating condition (i blame it on the cats)

Can the cats be deleted, I mean lost in a tragic boating accident similar to the boating accident in which I lost all my guns?

 

[spectras only]

LOL Ford....







Buy the orange hoses.

Mute point, I have hoses made in China on my 6.2 Chevy Merc engines.

 

[lbhsbz]

Mute point, I have hoses made in China on my 6.2 Chevy Merc engines.

But do they split and leak?

 

[spectras only]

Can the cats be deleted, I mean lost in a tragic boating accident similar to the boating accident in which I lost all my guns?

I guess my buddy keeps the cats on for the warranty period.

 

[HNL2LHC]

Can the cats be deleted, I mean lost in a tragic boating accident similar to the boating accident in which I lost all my guns?

The cats on my future boat were stolen by homeless peaceful protesters for the recycle value to fund their meth addiction. :looking:

 

[Shlbyntro]

Can the cats be deleted, I mean lost in a tragic boating accident similar to the boating accident in which I lost all my guns?

The cat elements are removable. But you would also have to find a way to trick the down stream O2 sensors so as not to throw a code and put you in limp mode.

 

[LargeOrangeFont]

The cats on my future boat were stolen by homeless peaceful protesters for the recycle value to fund their meth addiction. :looking:

It will be unfortunate you were impacted for such a noble cause.

 

[MK1MOD0]

The cat elements are removable. But you would also have to find a way to trick the down stream O2 sensors so as not to throw a code and put you in limp mode.

Very simple. O2 sensor extender with built in cat. Cheap and easy to install. Then just put the cats on a shelf till one is ready to sell the boat.

 

[Justsomeguy]

Can the cats be deleted, I mean lost in a tragic boating accident similar to the boating accident in which I lost all my guns?

That sounds like the speed bump I ran over once. That bump caused some damage. Things just fell off.

 

[4Waters]

The cat elements are removable. But you would also have to find a way to trick the down stream O2 sensors so as not to throw a code and put you in limp mode.

CP Performance - Max Volt Catalyst Eliminator Computer

Max Volt Catalyst Eliminator Computer

www.cpperformance.com

 

[spectras only]

But do they split and leak?

Ford has nothing to do with that hose manufacture, Indmar has. Splitting hairs?

 

[beaverretriever]

The blown Raptors have seen some issues. The naturally aspirated ones are bullet proof.

 

[Goodtime$]

Ford has nothing to do with that hose manufacture, Indmar has. Splitting hairs?

We use them in our 21 skiers. They work really good. We obviously don’t use those exhaust collectors in a jet boat.

Went to Indmar school.
1. That motor is a turn key ford factory deal
Indmar ecu / alternator / starter / manifolds only

2. Raptor 575sc has the larger 3.5 “ manifolds w cats. Indmar makes ski boat engines, they know tier 4 carb compliance is coming no matter what.

3. Chevy has stopped LSA production for marine engines, only allowing the car guys in the future so be prepared for that.

 

[FVCharlieBoy]

I’m having this problem now. The cast iron exhaust manifolds are corroding and flaking off flakes and blocking the water cooling ports on the exhaust. This causes major heat and melts the flex hose.

 

[boatgonebad]

What happened with this boat and problem? Have a 2020 Supra 23.5 boat with the raptor 575 engine. Went to Lake Powell and boat started smoking and Indmar claims water in the engine from bad fuel. We were with 2 other boats that filled up the same time same place and had no problems. Motor is destroyed and needs to be replaced and Indmar not wanting to cover anything . We believe water is got in some other way so curious about this problem.

Anyone ever had Indmar ever warranty a motor pretty easy to blame water seems like and void the warranty and how can a customer find the real cause of the motor problem?