Fluidyne warning: failed welds

[Coastal-Mach]

I had the same problem with Fluidyne, I purchased one for my Jeep through Summit. It failed at 10 months, called Summit and they replaced it under their warranty after BS from Fluidyne. Customer service at Fluidyne is non-existent.

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[HKusp]

Another vote for Mishimoto. They are excellent and will even replace them if they are damaged in an accident. I have their transmission cooler in my Superduty. Their quality is top notch.

 

[Evolvd]

But I'd much rather have a product that doesn't fail than a rock solid warranty.

I could slap a guarantee on a piece of shit, but then all you’d have is a guaranteed piece of shit

 

[Kermitz]

Been pretty impressed with DeWitts radiators. Everyone I’ve asked about them, had nothing but good things to say.

 

[EFI]

I have seen absolutely horrific water (grey water)

Which is why you should never ever be using straight tap water to fill your cooling system. Don't most engines require distilled water if you're mixing yourself?

 

[Cobra Jet]

Which is why you should never ever be using straight tap water to fill your cooling system. Don't most engines require distilled water if you're mixing yourself?

Yes, you’re correct - distilled water is the recommendation. That’s also what I’ve always used, not tap. Didn’t matter though, the Fluidyne welds still failed.

Tap water contains minerals which can leave deposits in cooling passages/channels within an engine and even corrode the internals of radiators over time.

 

[GregO]

D.I. Water

 

[Angrey]

Which is why you should never ever be using straight tap water to fill your cooling system. Don't most engines require distilled water if you're mixing yourself?

Tap water isn't going to cause corrosion appreciably any faster. It's just going to cause scale and solids in the fluid piping galleys and channels.

What's more corrosive is heat, moisture and oxygen with no active chemical anti-corrosive agent (included in most anti-freeze formulations).

Running straight water is the most thermally efficient mix, but doesn't offer any boiling point elevation. Coyotes and Voodoos offer 1.5 bar of pressure before release, so straight water boils at 232F under 1.5 bar. If you don't add any anti-freeze, and coolant temps exceed that, it's going to smoke the motor shortly thereafter.

Adding anti-freeze both raises the boiling point and lowers the freezing point. However, it also degrades the thermal transfer.

A good medium is to mix 2 parts water to 1 part Motorcraft Yellow. At 33%, you get 90% of the boiling point elevation and only a small decrease in thermal transfer. It also helps mitigate corrosion and scale.

 

[shogun32]

But I'd much rather have a product that doesn't fail than a rock solid warranty.

sorry, had to.

 

[TeeLew]

Coyotes and Voodoos offer 1.5 bar of pressure before release, so straight water boils at 232F under 1.5 bar. If you don't add any anti-freeze, and coolant temps exceed that, it's going to smoke the motor shortly thereafter.

In all fairness, anyone who is running these engines in anger should be nowhere near 230F, but the Mustang rad is undersized. If you go on track, temps will go to the moon. In a racing environment, 200*F is about the limit. By 225*, you've already pitched something (head gasket or whatever).

 

[Angrey]

In all fairness, anyone who is running these engines in anger should be nowhere near 230F, but the Mustang rad is undersized. If you go on track, temps will go to the moon. In a racing environment, 200*F is about the limit. By 225*, you've already pitched something (head gasket or whatever).

I was seeing 200+ sitting in traffic, sometimes 2010+.

We've since adjusted the tune to run the fans high speed at lower temps and it's helping a ton to keep them back down.

If I was gonna run straight H20, I'd at least research and add a good anti-corrosive.

And most guys don't enjoy (or suffer) the hot weather I have in SFL year round, so they have to consider freezing as much as the other end. And motrcraft is EXPENSIVE now. So swapping out for different times of the year is feasible, but just another cost and it's not cheap anymore.

 

[Evolvd]

sorry, had to.

Lol I beat you to the punch but I paraphrased the monologue.

 

[HKusp]

I could slap a guarantee on a piece of shit, but then all you’d have is a guaranteed piece of shit

 

[Hostil]

Been pretty impressed with DeWitts radiators. Everyone I’ve asked about them, had nothing but good things to say.

I'm also going with DeWitts!

 

[monte87]

This sucks. Fluidyne used to produce a good product.

25 years ago, I swore by them. I think they were sold and quality went to shit.

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