Emira - Louvered Polycarbonate Hatch Glass Replacement

yeah you would want to remove anything covering the motor.

Especially when tracking the car as the cover will trap and bounce the heat back.

being in Australia im sure you have experienced running a car without bonnet vents and with being vastly different for engine reliability.
Can you design and build a channel from the vent/blower to the turbo, as this will still need that cold air blowing over it??? ;-)
 
@mr.suntorytime Awesome prototype and work. Obviously, roll with what appears to be more marketable, but thoughts on doing something closer to the MC20, 488 or F8 rear polycarbonate rear hatch glass design?
 
Sign me up for this! Im looking forward a long time to have this done without success then the best option was CF but the 2 design available atm are not to my liking. I do look forward to some slight updates on the design.. currently its looking fine but not great, still I think you did a great job. Thanks

To give some feedback rather then saying need a change:
- fitting, the gaps are too wide on either side needs to be more fit/wider
- louvre design as one long slot iso 2
- edges in black are too thick for the looks and the clear part is very small. Id maximise the clear part as much as possible to the edges
 
@mr.suntorytime this looks hot!!! Congrats on getting the prototype done.

I’m not sure if air is getting pushed into the engine bay from the right vent. It would be great if there was a way to get more air flow into the engine bay with so much more space to evacuate.

I’ve noticed the engine temp changes a lot with driving. At speed it cools quite a bit even when running high RPMs constantly. It’s hottest when idling in traffic. If the temp gauge is to be believed, this will make a huge difference. I’ve had other cars where the engine temp stays static no matter what you are doing. I’ve wondered if it was working at times. The emira is very different in that regard.
 
OK, so this is a prototype, so things will change, but for me, the Evora GT option looks the better one.
However, any improvement in air displacement from the engine bay has to be a good thing and losing a heavy slab of glass is another benefit
Hats off to you @mr.suntorytime, excellent piece of work.

To the detractors, give the man some time, its a prototype, its supposed to be improved upon
 
Thank you all for the positive words!

The design is not changing as i have invested in the molds used to produce the product already for this project.

The fit and finish are the only variables that will be adjusted prior to final production.

the inspiration came from the Ferrari F40 rear hatch glass, so it may not be your cup of tea if you don't fancy the F40.
 
Louvered rear hatch has been tested for a whole season for the Lotus Cup in China. It will help cooling down engine big time but oem engine cover must be taken out for the i4.

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There's a big difference between transparent and clarity.

I have windshield film on my Elise and the clarity is terrible. It's wavy and distracting. It's coming off in the spring because I hate it.

Your Evora has louvers aligned with the line of sight to the rear, so you're looking around the cover instead of through it. That's fine if this Emira cover does the same, but the louvers look much smaller and broken up.

I don't want to post statements that could be negative on this vendor's post because it's a cool looking product and if you want it, get it. But you brought it up so I'll say this, don't be too impressed with the "cooler engine" aspect. The engine is largely cooled by a radiator and the oiling system. A little more venting at the top of the engine than is already there isn't going to be measurable for a turbo let alone the engine itself.
With respect, I would think most of us concerned about engine temps have the v6, where blowers running smaller pulleys, higher redline, more boost, are a bit temp sensitive.

I don’t know much about the i4 other than that they aren’t selling well and aren’t manual.
 
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Very cool project!

If this is successful for you, you should consider other design options like full width louvers, for example.

Looking forward to seeing the final fit/finish.
 
it will be made with optical hard coating on the topside so it should fare quite well. the material is selected for the heat of the engine bay and since its got many vents its should stay much cooler than the factory glass.

Thank you!

I have seen yellowing/warped polly on other vehicles, but I never knew if that was due to thickness, quality, coatings etc. As for the people discussing color/tinted. I see no reason why one couldn't tint theirs, should they choose, right? Great project!

I also appreciate you immediately shutting down all of the suggestions lol. Poor guys over at VF got tore up with leaving that door open. (Not that any suggestions are bad)
 
Thank you!

I have seen yellowing/warped polly on other vehicles, but I never knew if that was due to thickness, quality, coatings etc. As for the people discussing color/tinted. I see no reason why one couldn't tint theirs, should they choose, right? Great project!

I also appreciate you immediately shutting down all of the suggestions lol. Poor guys over at VF got tore up with leaving that door open. (Not that any suggestions are bad)
Thanks for the support!

Yeah anyone can wrap, paint or tint these however they see fit.
 
How is this attached? Poly

I like it!
 
I love the F40 (who doesn't) and love the poly on the F40 but this is just not it... if this is final product then sorry to say it looks poorly done (too wide gaps on either side where the poly is attached to the engine bay, the black edge is too wide all around and the slots are too small and just not molded properly).
It was just a constructive feedback, it's up to you what you do with it, it's your baby. Good luck with your project. I was very much interested to come up with an improved design but im out on this one.
 
I love the F40 (who doesn't) and love the poly on the F40 but this is just not it... if this is final product then sorry to say it looks poorly done (too wide gaps on either side where the poly is attached to the engine bay, the black edge is too wide all around and the slots are too small and just not molded properly).
It was just a constructive feedback, it's up to you what you do with it, it's your baby. Good luck with your project. I was very much interested to come up with an improved design but im out on this one.
I think the black edge you are referring to is the black-out part of the glass window. The photo looks like it was taken with the polycarbonate piece sitting on top of the glass for preliminary fitting. Seems the slits were sized to cover the clear area of the OEM glass, and removal of the black margins will give the whole engine bay more light (not necessarily visibility). I like the fact that there will be more light, and you can tint it if you don't.

I don't disagree with your opinion on the overall design, as this may not be for everyone. Bigger slits will be heavier and resonate at lower frequencies and generally tend to crack easier. I think the current design is pretty much a calculated compromise, given the properties of the material.

Can't wait to see how it looks on a dark colored car!
 
Hey thanks for the clarification I did not see properly it was installed already or sitting on the glass. Like I said I appreciate people doing things their way but might indeed not for everyone.
Still looking forward to see the final draw and functionality on the line. Good luck
 
FYI - Stock rear glass has the same black outlines if you don't have the privacy glass. Also, the gaps around the glass are pretty much the same as this new design.
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How is this attached? Poly

I like it!
Using standard glass adhesive.
I love the F40 (who doesn't) and love the poly on the F40 but this is just not it... if this is final product then sorry to say it looks poorly done (too wide gaps on either side where the poly is attached to the engine bay, the black edge is too wide all around and the slots are too small and just not molded properly).
It was just a constructive feedback, it's up to you what you do with it, it's your baby. Good luck with your project. I was very much interested to come up with an improved design but im out on this one.
As stated this is a prototype, so the fitment and the black masking will be adjusted.
I think the black edge you are referring to is the black-out part of the glass window. The photo looks like it was taken with the polycarbonate piece sitting on top of the glass for preliminary fitting. Seems the slits were sized to cover the clear area of the OEM glass, and removal of the black margins will give the whole engine bay more light (not necessarily visibility). I like the fact that there will be more light, and you can tint it if you don't.

I don't disagree with your opinion on the overall design, as this may not be for everyone. Bigger slits will be heavier and resonate at lower frequencies and generally tend to crack easier. I think the current design is pretty much a calculated compromise, given the properties of the material.

Can't wait to see how it looks on a dark colored car!
yes, since this is polycarbonate vibrations on larger unsupported spans (louver vents) can increase the likelihood of cracking or breaking.

Which us why other designs that have large slots or vents that have unsupported spans are reinforced with glass fiber or carbon fiber.
 
Launching in Q1 2026
Price: TBD
Prototype pictured*
Weight - 5.5kg
Lighter, Lower center mass, and removes engine compartment heat.
Engine compartment thermal testing underway.

View attachment 74779
That looks great , can it match black pack and when available would be good to know if you can ship to UK ?
 

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