100% DI Failure with Nurburgring rentals

[Porsche]

Originally Posted by robispec

Yes we broke the car in then had it tuned for race gas/E85
We have always run 5w30 oil and have a HUGE radiator/oil cooler combo.
I think all these problems stem from too hot oil.....as the hotter the heads get the higher your chances of detonation happening, and detonation is what kills the seals.

Your thoughts here mirror mine. I'm always glad to learn from those with more experience.

Thanks for sharing.

[Freude am Fahren]

If you've heard this detonation (though it was never on the WOT->lift to above5200RPM->WOT situation), maybe a half dozen times in a few months, anybody have any clue how badly damages my DI seals might be?

[thill]

Originally Posted by Freude am Fahren

If you've heard this detonation (though it was never on the WOT->lift to above5200RPM->WOT situation), maybe a half dozen times in a few months, anybody have any clue how badly damages my DI seals might be?

That would be very hard to answer without pulling them. Dezoris posted an excellent video on how to pull the injectors to inspect them.

[Marrk]

Originally Posted by robispec

Yes we broke the car in then had it tuned for race gas/E85
We have always run 5w30 oil and have a HUGE radiator/oil cooler combo.
I think all these problems stem from too hot oil.....as the hotter the heads get the higher your chances of detonation happening, and detonation is what kills the seals.

Are you referring to this: Robispec Big Radiator and L2L Oil cooler?

I'd like to learn more about your radiator and oil cooler set up. Do you have pictures? When you drive on the street, is there a problem with over-cooling the engine?

Thanks.

[DarkSunrise]

Originally Posted by Marrk

Are you referring to this: Robispec Big Radiator and L2L Oil cooler?

I'd like to learn more about your radiator and oil cooler set up. Do you have pictures? When you drive on the street, is there a problem with over-cooling the engine?

Thanks.

Curious about this also. Is there some kind of plate that can be used to block off the cooling to allow the oil to get up to temp on the street?

Also are there any issues with oil pressure or flow?

[Dezoris]

Originally Posted by Marrk

Are you referring to this: Robispec Big Radiator and L2L Oil cooler?

I'd like to learn more about your radiator and oil cooler set up. Do you have pictures? When you drive on the street, is there a problem with over-cooling the engine?

Thanks.

Robi runs a "race car" it's trailered to the track now. For the street much of his setup is not a good example of what is good for a street car. His setup is optimized for the track because he has to keep temps down namely with the Innovate Supercharger setup.

For common users throwing a monster oil cooler without thermostat on a street car is a bad idea because in normal temps and normal driving you can't get oil up to temp properly.

[Marrk]

Originally Posted by Dezoris

Robi runs a "race car" it's trailered to the track now. For the street much of his setup is not a good example of what is good for a street car. His setup is optimized for the track because he has to keep temps down namely with the Innovate Supercharger setup.

For common users throwing a monster oil cooler without thermostat on a street car is a bad idea because in normal temps and normal driving you can't get oil up to temp properly.

This is what I'm thinking.



However, if the argument is that heat leads to detonation leads to injector seal failure, do street cars need some further cooling beyond OEM stock set-up?

[Dezoris]

Originally Posted by Marrk

This is what I'm thinking.



However, if the argument is that heat leads to detonation leads to injector seal failure, do street cars need some further cooling beyond OEM stock set-up?

Tuning is what controls the detonation. Heat only makes it worse.
The most important thing to address is tuning. Once you don't have detonation issues or that transient table is fixed for common folk seals won't be an issue I would not even worry about it.

If you don't have tuning corrected just make sure you are not running hard enough to get your oil temps past 240 and keep your track sessions short and I don't think you will have to worry much.

If you want to go to the track , stock or not run an oil cooler the car needs it. But if you do more street than track you need a cooler with thermostat.
If you are like Robi who has a track car run a cooler without thermostat that is wide open.

[Liquidsnake]

Originally Posted by Wolfking

My "crickets" died around 5k miles...

Mine too, I have not heard them ever again.

[robispec]

Oil temps run between ten and twenty five degrees above water temps the water is much better at keeping stabile oil temps than air to liquid solutions.

[robispec]

Originally Posted by Dezoris

Robi runs a "race car" it's trailered to the track now. For the street much of his setup is not a good example of what is good for a street car. His setup is optimized for the track because he has to keep temps down namely with the Innovate Supercharger setup.

For common users throwing a monster oil cooler without thermostat on a street car is a bad idea because in normal temps and normal driving you can't get oil up to temp properly.

It's daily driven too...I trailer it because of the volume of E85 required to keep it fed...lol. I need a 55 gallon drum for a weekend.
Also my trailer has been used many times to get OTHER less prepaired people's "street" cars home after failures.

I think of it as a service to the community...
My cooler uses the water thermostat as the regulation. Way better in winter as the water is heating the oil up faster.

[Marrk]

Originally Posted by robispec

It's daily driven too...I trailer it because of the volume of E85 required to keep it fed...lol. I need a 55 gallon drum for a weekend.
Also my trailer has been used many times to get OTHER less prepaired people's "street" cars home after failures.

I think of it as a service to the community...
My cooler uses the water thermostat as the regulation. Way better in winter as the water is heating the oil up faster.

Not clear what you mean.


Do you mean that you do not run a separate oil thermostat? Do you run a separate, dedicated oil temp gauge?

[robispec]

The water in your engine is regulated by your thermostat in your stock cooling system it opes fully at about 195 degrees F and restricts about 190. So it keeps the oil temps above this threshold

[InvalidJohnny5]

I've been after your L2L Rad/Oil combo, but with the V1 it wouldn't fit on the AVO cars, right now I'm waiting on Sportsguy87 to install the V2 to be sure it fits before purchase lol.