Verus oil-to-air oil cooler

[razorlab]

Sure, if a heat exchanger change did lower temps, which it doesn't, while spraying meth. You're already below ambient. If anything, in that situation a larger reservoir of cold side coolant would hurt temps as it is fighting the meth evaporation chill.

No Mani-cooler cools below ambient, or even remotely close to ambient, unless it has an ice box attachment, which we aren’t talking about here.

I think you are talking about a heat exchanger while we are talking about a mani-cooler. Neither of which will cool below ambient, so not sure where that is coming from.

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[licklobster]

No Mani-cooler cools below ambient, or even remotely close to ambient, unless it has an ice box attachment, which we aren’t talking about here.

I think you are talking about a heat exchanger while we are talking about a mani-cooler. Neither of which will cool below ambient, so not sure where that is coming from.

I'm talking about the manifold when meth is being sprayed being below ambient (because it is).

I'm consistently ~25F below ambient when meth is spraying, and meth is literally the focal point of the discussion.

 

[Supraman40]

Thats hard to believe youre seeing temps up to 25 below ambient from spraying meth that is above ambient.

 

[razorlab]

I'm talking about the manifold when meth is being sprayed being below ambient (because it is).

I'm consistently ~25F below ambient when meth is spraying, and meth is literally the focal point of the discussion.

25F below ambient?!?!? Hahha. You are definitely going to need to show your work on that one, on a Supra. I’ve yet to see anything close to that on tracked Supras spraying meth/water for cooling purposes.

If you stated a 10-15F reduction in IAT, I would believe you as that is what I have seen in many logs. You are basically stating you get a 50-60F temp reduction when spraying. Again, show the work.

 

[i3igpete]

For science i googled it

https://www.researchgate.net/public..._in_the_intake_of_internal_combustion_engines

 

[razorlab]

For science i googled it

https://www.researchgate.net/public..._in_the_intake_of_internal_combustion_engines

Let's maybe keep the sea water cooled marine boat diesel engines out of this discussion.

 

[kyle9]

Im mainly looking to help lower IATs, what's the best option, heat exchanger or the oil cooler.

An well-designed heat exchanger will improve your IATs, eg PWR. Unfortunately, most of the aftermarket heat exchangers are junk that add weight and massively increase pressure, ie decrease flow, in the low temp system. From my testing, the PWR one is probably the only one worth buying. There may be others though. The OEM heat exchanger is quite good and better than many aftermarket units like CSF.

However, you'll gain more IAT cooling by replacing the intake manifold with a upgraded unit like the EOS or Wagner.

You'll also gain a lot of IAT cooling by spraying meth.

You'll also improve IAT cooling by increasing the coolant flow by upgrading your water pump and/or sizing up your coolant lines.

In order of ease and "bang for the buck," you should upgrade your intake manifold and spray meth.

The oil cooler will mainly improve your oil temps and engine coolant temps, not charge air temps (IATs).

 

[i3igpete]

Let's maybe keep the sea water cooled marine boat diesel engines out of this discussion.

I suppose you're right, methanol would vaporize even better in a road-going SI engine, boosting the in-cylinder cooling effect more (even if that's not being measured here). That being said, I don't know the flow rates of the meth systems that people install on B58's, if they approach 20% of the energy fraction needed for that cooling.

 

[razorlab]

I suppose you're right, methanol would vaporize even better in a road-going SI engine, boosting the in-cylinder cooling effect more (even if that's not being measured here). That being said, I don't know the flow rates of the meth systems that people install on B58's, if they approach 20% of the energy fraction needed for that cooling.

What I really want to see is a datalog showing 25F *under* ambient IAT's on a B58TU. As claimed. Theory and white papers are cool, but real world data is where it's at.

 

[licklobster]

Thats hard to believe youre seeing temps up to 25 below ambient from spraying meth that is above ambient.

How do you think the latent heat principle works when you atomize methyl alcohol. Thats the entire purpose of spraying meth for cooling and not octane/supplemental fuel

 

[razorlab]

Ah man, I was really hoping to see a log showing IAT's 25F under ambient on a B58TU. Literally every.single track driver would be using the same setup shortly after and never waste $3,000+ on a manifold.

 

[licklobster]

Ah man, I was really hoping to see a log showing IAT's 25F under ambient on a B58TU. Literally every.single track driver would be using the same setup shortly after and never waste $3,000+ on a manifold.

I'm not certain a meth tank would last more then a couple laps at best.

 

[kyle9]

How do you think the latent heat principle works when you atomize methyl alcohol. Thats the entire purpose of spraying meth for cooling and not octane/supplemental fuel

I’ve seen IATs reduced by 40f by spraying meth but have never been close to ambient on track and probably have the most aggressive cooling setup of any track Supra…

but you could run 0 boost and spray meth and get there I guess ?‍

 

[razorlab]

I'm not certain a meth tank would last more then a couple laps at best.

So you can't show your work. Got it.

 

[razorlab]

but you could run 0 boost and spray meth and get there I guess ?‍

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