RCZ's 370Z Journal.

RCZ

Yeah, its crazy how big the difference is. Thanks for the Tune Jack.

spearfish25

Getting back to the engine bay temps...

I firmly believe that a vented hood would work wonders for our cars. Add a better radiator fan setup and thermostat, and you'll be golden. I was sitting in gridlock traffic for an hour last week in 90F weather and did a little research. Idling with the A/C on gave me oil temps of 215F. The A/C compressor activates the driver's side radiator fan...with the A/C off, only the passenger side fan is normally running. When I turned off the A/C (and the driver's side fan shut down), the engine temps climbed 15F to 230F.

Vented hood and better fans = win

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2013 Cadillac V-Wagon, RIP Z

Red370

I agree, but having a clean looking vented hood is another story...

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Nitex

good stuff RCZ, i hope to have this kit within the next 6 months.

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2013 Drivers ED GTI | Stage 2 Unitronic

RCZ

Thanks Nitex

Spearfish, I've been thinking about a hood and painting all of it. I think I want to do some testing though. I'm gonna borrow a heat sensor to see how each change I make affects engine bay temps. I'm thinking the following:

- Jet hot coating intake charge pipe
- CryO2 Intercooler Sprayer for Heat exchanger / oil cooler
- Reflective gold foil on manifold / Water reservoir
- Heat shielding to isolate headers
- Oil cooler Fan
- Vented hood

spearfish25

I'm very interested to see how that turns out. While the shielding may be helpful for directing or containing radiant heat, my sense is that our engine bay is just too well sealed. While the fans do their best to funnel air in through the radiator, there are no decent exit locations...it's like a fan blowing in the top of a glass jar. Even a hood lift kit (which would look ridiculously stupid) would allow the air to exit at the base of the windshield and probably drop temps substantially. I'd be willing to bet that the shielding doesn't do much until you get the hot air vented out somehow.

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2013 Cadillac V-Wagon, RIP Z

theDreamer

I assume you are going to run the heat sensor before doing anything?
Something else that might be a good idea is to see how the air is flowing off the engine. Using the Mustang as an example the front of the hood is a large area of where the air dumps out, hence why the GT500 and such put the vent there.

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travisjb

how about removing some of the plastic shroud that connects the hood and the winshield? mine is completely removed, as is the wiper assembly, and I suspect it has improved the flow

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Nitex

Hah if i was in Texas still maybe i could get away with that, but its Julanuary here in Seattle so that wouldn't be such a good idea for me!

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2013 Drivers ED GTI | Stage 2 Unitronic

RCZ

Will try that, I need to get a sensor in there first though. Any foreseeable downsides to taking those sealing pieces out?

What do you guys think the max engine bay temp is?

RCZ

Do you guys think we exceed 158F (70C) inside the engine bay?

m4a1mustang

I wouldn't be surprised if we did.

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spearfish25

Without a doubt. Sometimes my hood is too hot to touch, and I have no problem stirring my morning 155F homemade latte with a finger.

Here's my guess. Engine bay temp is within 20F of your oil temp at any given oil temperature. Also, assuming the engine bay temp would never be above oil temp.

Hell, I'll go test this with my wireless grill thermometer later tonight.

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2013 Cadillac V-Wagon, RIP Z

Josh@STILLEN

Is that not one of the greatest inventions ever? Love mine.. I can cook while being inside and it's always dead on perfect when I pull it off..

No reason it wouldn't work fine near the engine, it's sensitive. Always pins ambient air temps too..

spearfish25

I love mine too. It's amazing they don't cost more.

My grill thermometer may have just been retasked completely. Why buy a scan gauge to monitor intake temps? I'll just duct tape the probe and transmitter to the intake, then tape the receiver/display to my dash. LOL!


As for the dyno chart....that torque curve is as flat as my old girlfriend's...

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2013 Cadillac V-Wagon, RIP Z