Interesting warranty claim from Supra forum.

[larry_arizona]

I feel like something is missing from this story for warranty to be denied. I am sure we will never know the full story.

2020 Supra SL 550 Roush Engine needs to be replaced not under warranty
https://r.tapatalk.com/shareLink/top...ink_source=app

2020 Supra For Sale 130 hours and brand spanking non warranty covered motor!!
https://r.tapatalk.com/shareLink/top...ink_source=app


Sent from my iPhone using Tapatalk

[sandm]

not sure who this is but I know the shop in boise had a blown 575. took indmar a month before they warranted it after collecting water/oil and ecu data. then another couple months to ship and swap out the blown engine. according to the mechanic I knew there he said indmar will own up to any issues once they have determined that the basic proper protocols were followed.

something tells me, as larry mentioned, there's a whole lot more to this story than what's being posted. funny to read all the responses to "sue them". that's easy to do if there's no skeletons hiding...

[Holdmybeer]

What does he want for the boat?

I have built plenty of forced induction motors. Ran plenty also with NO2. Sounds fishy to me. If he got 12hrs on it before it went bang, someone kept resetting the ecm and continued surfing. Also, how did only the 3rd cylinder burn up?
Assuming no block damage, and no supercharger damage, the motor could be rebuilt under $25k.

[larry_arizona]

What does he want for the boat?

I have built plenty of forced induction motors. Ran plenty also with NO2. Sounds fishy to me. If he got 12hrs on it before it went bang, someone kept resetting the ecm and continued surfing. Also, how did only the 3rd cylinder burn up?
Assuming no block damage, and no supercharger damage, the motor could be rebuilt under $25k.

My guess is continued pushing engine with bad fuel as nobody would want to end their trip early.


Sent from my iPhone using Tapatalk

[Holdmybeer]

Larry,
I read you post on the Supra site. I agree. ECU and knock sensors were probably going of continuously but there were 10 people on the boat and they were on a trip with others. Kill battery wait 5 minutes, fire it back up and enjoy.

He keeps saying the other boats didn't have issue and used the same gas. I'm sure they were NA engines and the water didn't matter. The only other thing I can think of is he about flooded the boat and managed to get water in the fuel tank. It is just odd that only #3 was checked, per his story. I would think Indmar would want to throw a scope in the spark plug holes and check all 8 for damage. That would confirm bad gas in every cylinder and completely exempt them from warranty.

[larry_arizona]

My experience with FI engines is, when the first piston goes the others were not far behind.

In this case #3 was just the first to go.


Sent from my iPhone using Tapatalk

[SONIC]

Well that sucks, but that's what insurance is for.
Indmar can't be responsible for someone dumping water in their gas tank.

I'd be curious why the boat didn't immediately go into limp mode though to prevent the issue.

[larry_arizona]

Well that sucks, but that's what insurance is for.
Indmar can't be responsible for someone dumping water in their gas tank.

I'd be curious why the boat didn't immediately go into limp mode though to prevent the issue.

That is why I feel something is missing to the story. Owner says it threw one code, Indmar says 6000x…….

A misfire isn’t necessarily knock or detonation and 6000 misfires could be as simple as a fouled plug, but it should have gone into limp mode if the knock threshold was achieved.




Sent from my iPhone using Tapatalk

[Holdmybeer]

That is why I feel something is missing to the story. Owner says it threw one code, Indmar says 6000x…….

A misfire isn’t necessarily knock or detonation and 6000 misfires could be as simple as a fouled plug, but it should have gone into limp mode if the knock threshold was achieved.




Sent from my iPhone using Tapatalk

Even if it did not go into limp mode, the boat would be running so terrible anyone should have noticed. I have had water in the fuel of motorcycles and other off-road toys. They sputter, idle bad, and stall consistently.

Again, insurance should step up at this point and help get it fixed. Assuming he had insurance!!!

[2in2out]

My guess is Op had filled tank at marina, got into a dither herding “boat cats” back into the boat to clear the pump for the stack of thirsty boats, and forgot to put the fuel cap on. No one noticed for a while, and whoever did, didn’t pass it on to the Op/owner. Hence, the vector for water in fuel, and isolation of effects to a single boat. Op is first time boat owner in a complex holiday environment with many varied inputs and distractions. Op, or whoever was assisting could easily miss this simple step.

Wouldn’t water in the fuel cause a ring/valve/gasket failure as result of steam expansion on deflagration?

Detonation shouldn’t occur under in large enough water/fuel mixture, and the water vapor would absorb more heat then typical exhaust gas lowering cylinder temps unless friction overtook temp creation to melt the piston.

Like Kent says, there’s more to the story that even the Op/owner may not know, and we may never know.


Making my new SA build come true!!!