... yes, did someone say "stick on"

that ain't gonna ( or will ) fly.. i wouldn't think?

 

I'm interested too, that 3m tape can be really strong if applied right. Maybe the lip could lock underneath, but I bet it would hold.

 

Your windshields are all 'stuck on' - and that is some serious surface area.

As powder mentioned, the dive planes are 'stuck on' too.
Not an issue if done right.

 

The windshield is getting pressed tighter at speed, not sheared off. I wouldn't cup my hand and stick it out the window at 170mph. But even putting that aside, what is the downside to making these as the full inserts - besides cost probably.

-V

 

not to disparage these pending efforts, I'm all for em and I don't know jack about 3m tape. but I was under the impression the mantheys used the existing inlet enclosures. seems weird for those of you potentially using them at 150+ to rely upon tape given their potentially extended exposure to draft?!. that was all that prompted my query.

 

IMO if they stayed on with tape at over 100mph it would show they did not work as they will need to 'grab' air and pull it into the intake.

 

I knew that was going to come as I was typing.
No, actually at speed there can be large outward forces on the windshield, too. But, skip it. Take the rear window. Or the fact that large portions of modern cars are no longer welded but glued (chassis components!).
Whatever.

 

I'm not challenging, 'cause I'm not knowledgeable enough to know better. But I'm aware that the pressure does go both ways along the speed curve. Like how they say to keep your house's windows open during a tornado.

As for the rear window? I'm cabrio, so it ain't going anywhere.

For my part, I (sometimes wrongly) assume that developers handle all these performance-related things, so my observations, suggestions and preferences are based as much or more on aesthetics. I think a full collar insert would look a lot better than adding another seam to the intake surround.

-V

 

Hey guys,
Just got back for 3 days at the track testing some aero and I'm finally catching up and looking to follow up on the thread. First of all, thank for everyones input. I'm going to go back through the various posts and just answer each individually as that may be the easiest.

The more research I've done on this, the more I'm convinced that there will be a quantifiable improvement by using inlets that provide more of a scoop to get a ram air effect to the intercoolers. Yes, the outlets do create a low pressure area thus pulling air in over the ICs but if air can also be forced though the inlets than the result would be more air flowing over the cores. This is not a new concept, and as I've mentioned before, Porsche has employed a more aggressive inlet design on the later model cars. If you look at what various race teams have done with turbo Porsche cars, you will see that they always employ some type of ram air scoop to the intercoolers. A couple of examples done by Alzen and RS Tuning in Germany are below:




This the inlet on a Noble 400



Obviously these are no hold bared set up designed for performance over aesthetics. The application I had in mind would be a tamed down version basically along the lines of the GT4 scoops. The Manthey versions is not only expensive but not much improvement over the stockers in my opinion.

Finally, after emailing with Joe, he feels it would be great if he actually had a car on hand so that he could get a good in person visual of the lines of the car in conjunction with the inlets. He feels this would allow him to create the most aesthetically pleasing product. So, if anyone is in the Vancouver area and willing to help out, feel free to chime in.

 

The Manthey inlets are also attached with a high strength double sided adhesive tape to the existing inlets. This is also how the GT4 OEM inlets are attached. Personally, I would attach them with 3M tape which would act as a seal and also uses small screws or aluminum rivets from the backside of the OEM inlets for double security. This is how I've attached Joe's dive planes but other are only using tape with success. Obviously some people would not want to drill holes in the existing inlets and that is why the double sided adhesive could be used, whether tape of some type of contact cement.

 

I think that they will work and will give GT3 owners scoop envy

 

Steve, there is no way a fan will provide as much airflow at speed as ram air would. Then there is the added weight, complexity, etc, etc...

 

To completely remake the inlets with OEM clips and such would be cost prohibitive on an item such as this. These are the OEM ones:

[url=https://flic.kr/p/vYHxu2]

[url=https://flic.kr/p/vYzfqE]

 

Getting more air to flow over any intercooler core will lower their respective IATs.

 

Totally agree Steve.