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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain.


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Old 12-10-2023, 01:26 AM   #15
Compelica
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Have you considered creating a cover plate for the oil pan opening like the GR86 has, or even some of the aftermarket options? Could potentially help with overall flow.

Personally I’m part of the hood vent gang (with a gr86 skid plate on my 2013) but I’m really interested in what you have going on here.
Ah wasn't aware that the GR86 underpanel is a direct fit for the older twins.

Not sure what you meant by improving overall flow, as the ZN6 oil pan opening would also serve as a outlet for air to flow out of the engine bay.

On creating a cover - probably not worth the work at this point (and you could just get a used GR86 panel anyway).
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Old 12-10-2023, 01:55 AM   #16
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Ah wasn't aware that the GR86 underpanel is a direct fit for the older twins.

Not sure what you meant by improving overall flow, as the ZN6 oil pan opening would also serve as a outlet for air to flow out of the engine bay.

On creating a cover - probably not worth the work at this point (and you could just get a used GR86 panel anyway).
It's not exactly a direct fit, you need to get the GR86's front sway bar mounting brackets and it's OEM front chassis bracing ~ $120 for all that.

You could be right about the oil pan opening venting heat, but in my amateur opinion it seems like the opening is far too big to create a pressure differential that will allow effective air evacuation, especially compared with the "louvered" flaps you have created. I'm just thinking that if that area was covered, your louvers would siphon out heat even more than they already are. Could be completely wrong about that though. Would only require some sheet metal and 3 screws for testing though!
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Old 12-10-2023, 07:57 AM   #17
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It's not exactly a direct fit, you need to get the GR86's front sway bar mounting brackets and it's OEM front chassis bracing ~ $120 for all that.

You could be right about the oil pan opening venting heat, but in my amateur opinion it seems like the opening is far too big to create a pressure differential that will allow effective air evacuation, especially compared with the "louvered" flaps you have created. I'm just thinking that if that area was covered, your louvers would siphon out heat even more than they already are. Could be completely wrong about that though. Would only require some sheet metal and 3 screws for testing though!
I see your point on the oil pan opening. Possibly that may happen on idle or low speed driving, but once highway speeds are attained that oil pan opening would possibly help evacuate air out of the bay.

A smoke machine would be great to see how the air exits...
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Old 12-10-2023, 10:27 AM   #18
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@Compelica, I really appreciate your job, but would't it be easier to buy the vented Beatrush panel?
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Old 12-10-2023, 11:57 AM   #19
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@Compelica, I really appreciate your job, but would't it be easier to buy the vented Beatrush panel?
Given the price of the Beatrush panel including shipping, getting the stock one done at a shop will be less than 10% of the overall cost.
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Old 12-10-2023, 12:05 PM   #20
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@Compelica, I really appreciate your job, but would't it be easier to buy the vented Beatrush panel?
$200+ plus shipping vs some side cutters.
Guess your time/effort isn't worth much.
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Old 12-10-2023, 12:23 PM   #21
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$200+ plus shipping vs some side cutters.
Guess your time/effort isn't worth much.
Where I live, labor is in a way, affordable but products are expensive - it cost me approx $24 to get it done at a metal works shop with laser cutting and a machine to do the bending.
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Old 12-11-2023, 01:52 AM   #22
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Unfortunately, labour price is not the same everywhere...
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Old 12-11-2023, 03:32 AM   #23
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My point being this something someone could do on their own for free.
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Old 12-12-2023, 03:32 AM   #24
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My point being this something someone could do on their own for free.
It wouldn’t be pretty but I could replicate that with my 4 1/2” cutoff pretty quick.
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Old 12-12-2023, 04:37 PM   #25
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I did this a long time ago just for fun. Also needed to bang a bend in the thing to stop rubbing on the jdl header. I also drilled holes in my side emblem thing. Not sure it does anything but I have felt heat coming out of it parked after driving. Just street, no track so I don’t see any ill effects. Thanks for your testing.
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