Installing hood vent louvres - Page 7 - Toyota FJ Cruiser Forum
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post #61 of 174 (permalink) Old 08-24-2017, 02:21 AM
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Re: Installing hood vent louvres

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Once I found out the details on the sensor the ideas have been rolling through my head on what I could/should be monitoring.

2 diffs
Trans
Transfer
Ambient air
Intake
And so on......and so on.....so on.......
I don't think diff & transfer case temps should be a worry because they are unlikely to heat up significantly (but temps are important to monitor in cold weather). Same goes for manual trans.
Auto Trans and Intake temps are available through ODB - e.g. torque, and ambient (outside) air temp is available on your dash if you have the gauge cluster (inclinometer etc), but under hood temps aren't.
One thing that would be really useful would be shock temps... Getting some early warning of those cooking would be pretty useful, but I don't know how that could be reliably measured, because you need to measure the oil temp.
Exhaust (cat) temps are also available via OBD
Oil temp - I'm not sure if that's available via OBD or not - I might have a look later when I get back into the car.

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post #62 of 174 (permalink) Old 08-24-2017, 02:58 AM
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Re: Installing hood vent louvres

Very nice @Primer . got me thinking I could manage to do this... Like the SS button heads... use them on a lot of stuff and I don't have a rivet gun. As I've got a matt black hood decal the matt black would work...
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post #63 of 174 (permalink) Old 08-24-2017, 03:07 AM
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Re: Installing hood vent louvres

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Blue Sea Systems OLED temp gauge comes with a sensor that can be used for ambient temperatures.

Might be a worth while investment to keep an eye on things.
The Bluesea temp gauge is really nice, but it ain't cheap...

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post #64 of 174 (permalink) Old 08-24-2017, 03:20 AM
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Re: Installing hood vent louvres

Hmm.. I wonder what effect active fans under the louvers would have...

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post #65 of 174 (permalink) Old 08-24-2017, 03:37 AM
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Re: Installing hood vent louvres

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amaclach previously said: View Post
Hmm.. I wonder what effect active fans under the louvers would have...
I doubt it would improve flow ...
The heat flow out of the vents, is significant ...even after the engine is off...you can feel it pumping out.
Heat rises...Lolol
Good idea ...but not necessary, imho.
Cheers
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post #66 of 174 (permalink) Old 08-24-2017, 04:38 AM Thread Starter
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Re: Installing hood vent louvres

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Zero'sFJ previously said: View Post
Very nice @Primer . got me thinking I could manage to do this... Like the SS button heads... use them on a lot of stuff and I don't have a rivet gun. As I've got a matt black hood decal the matt black would work...
Was wondering when you'd catch the bug
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post #67 of 174 (permalink) Old 08-24-2017, 04:54 AM
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Re: Installing hood vent louvres

Seriously considering this...
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post #68 of 174 (permalink) Old 08-24-2017, 05:05 AM
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Re: Installing hood vent louvres

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G'day,
Here is a prototype louver seal .... still needs a bit of tweaking.
Using 1.5mm rubber as the seal itself, its mounted onto a bit of steel plate ( about 2mm thick )
This sits over the opening from the underside and held inplace with a bolt.
the cross member is riveted into the subframe, and the bolt hole has been tapped, but i popped a nut on the back as additional security.
Its easy to slide in and anchor.
This version is perhaps a bit skinny on the overlap to the hood skin, but still works.
future versions will be slightly wider n taller to create a wider seal around the edge.

Here are a few pixs. I still have to touch up the rivets with some VB.

cheers
Baz
Post Script.
I see this type of seal used in a static environment...when parked ...to prevent entry into the engine bay.
I am working on a method to seal off the louvers whilst driving / wheeling as needed...
Cheers
Baz
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post #69 of 174 (permalink) Old 08-24-2017, 09:50 PM
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Re: Installing hood vent louvres

Quote:
amaclach previously said: View Post
I don't think diff & transfer case temps should be a worry because they are unlikely to heat up significantly (but temps are important to monitor in cold weather). Same goes for manual trans.
Auto Trans and Intake temps are available through ODB - e.g. torque, and ambient (outside) air temp is available on your dash if you have the gauge cluster (inclinometer etc), but under hood temps aren't.
One thing that would be really useful would be shock temps... Getting some early warning of those cooking would be pretty useful, but I don't know how that could be reliably measured, because you need to measure the oil temp.
Exhaust (cat) temps are also available via OBD
Oil temp - I'm not sure if that's available via OBD or not - I might have a look later when I get back into the car.
I did just move back to Canada and the cold was one of the reasons for monitoring the diffs, transfer and trans temps.
I also have the MT and no gauge cluster.

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post #70 of 174 (permalink) Old 08-24-2017, 09:52 PM
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Re: Installing hood vent louvres

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amaclach previously said: View Post
The Bluesea temp gauge is really nice, but it ain't cheap...
True, but that OLED display is fantastic, if it is built like their voltmeter it is quality all the way.
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