My engine cooling fan runs all the time while the engine is running. Many are wired that way. My fan also runs randomly after the engine is shut off depending the the temp sensor in the engine compartment.

 

The Manthey IS AN ADD ON. It is make of carbon fibre and attaches with double sided tape. Simply sticks on to the OEM inlets. Look at this pictures in the following link and you will clearly see the outline of the Manthey piece that is stuck on to the OEM inlet. I have confirmed that with them.

http://www.manthey-motors.de/nextsho...docid=88&e1=66

 

Not sure why though? We could re-use the inside gasket portion. And are the clips and such removable from the back side of the surround? If so, then molding the receivers are all that would be needed. Genuinely curious, as I've no experience in fabrication work like this.

But if the final product gets made and is the tape-on variety, I suppose anyone so inclined could have them blended into the OEM pieces by a decent body shop.

-V

 

Agreed. Porsche uses tape on the factory dive planes on the GT3RS 4.0. I would still secure them with screws or other means from the backside.

 

This is correct. A friend had the rear window on his 997Cup blow out at speed. They looked at the footage on the roof mounted rear camera and realized that there is a huge low pressure area right around the base of the rear window ahead of the wing which literally is trying to suck the rear window out. They could see the distortion of the lexan window on camera. This is why they have the vertical security straps there.

 

Obviously remaking the whole insert would be the way to go but that would entail an injection molded part for which the tooling would be very expensive. I will run it by Joe but I suspect that will be the case.

 

But the difference is that the screens etc are designed to be aerodynamic, yes there may be some low pressure behind the rear screen, I doubt the front screen as that was used for cowl induction on the Camaros etc, air basically bouncing off the screen and getting pushed back down into the back of the hood area. Now this scoop is and cannot if it is to work be aerodynamic, i would say imagine putting your hand out of the window at 150 facing fingers forward like a knife, there will be some resistance, now put it flat 90 degrees and see the difference, yes it could be glued on (some of the 3M glues have 4000+psi shear strength) but that will be far more permanent than removing the intake and using say 3 small screws and some Sikaflex, this COULD be reversed if you ever wanted to. But 3M tape aint gonna hold it on guys !!!!

 

those manthey's still make some impressive claims. even if one doesn't sprechen sie deutsch. it's be great if mr toth can replicate those numbers. go nice with new i/c's, thats for sure.

 

If it looks like the one one the GT4 and is not made from fiberglass I'm in.

 

think ur on a winner here hound as long as the scoop retains the original curves. Not sure the GT4 or Noble type although practical would be much of hit.

perhaps get a copy of mantheys version and rework it so the forward lip extends two or three times the distance. Perhaps everyone here can through in a 50 towards the purchase of their ridiculously priced scoops. I know im happy to.

Then should be easy to make a fibreglass mould which could be fined tuned until you were happy with the result both practically and aesthetically. With the finished product made in either carbon or kevlar.

Look forward to seeing what u come up with mate

Cheers,
Tim

 

Good idea. I'd be happy to contribute the acquisition fund.

Also, it might help a lot of us feel better, myself included, if there were high quality, high likelihood renderings of the proposed product before they go to production. Might help avoid another LED-tail-light-style escapade.

Following factory design cues is important, at least to me. Want to avoid Gemballa looking bulginess or the GT4 more squarish intake scoop lines.

-V

 

Keep the inputs coming guys. Joe Toth is now following this thread and will keep us abreast of developments but it looks like he's on board for this project. Stevemfr will be sending Joe the spare set of inlets that he has so that Joe can get started. As I said earlier, if there is any one with a TT/GT2 in the Vancouver area, that would help as Joe could get a little one on one with the car to get the lines of the inlets fine tuned. The goal here is an end product that will be not only functional but also have an OEM feel to it. I also propose that we as a group cover the shipping (from France to Canada and back) for Stevemfr since he so graciously offered to send these to Joe. Once we have to total I'll post it up for the group and we could all paypal Steve a few bucks. I'd like to also thank Krazy32 for stepping up to help here. Muucho appreciated.

Once Joe receives the inlets he will get to work on them and it should not be too long to have some prototypes or pictures that he can share with us. I have looked at the OEM inlets in detail and based on my measurements the lip of the new inlets should project out about 2-2.5" or so (measured at the center of the inlet) from the side of the body of the car. I would imagine the inlets should probably have an oval shape to them when looking back down the side of the car (see pic below), similar to the current inlets except further out. I don't think the inlets would have a flat section to them like on the GT4 but would be more of a "bubble shape". I'll leave that up to Joe to decide what would look best. Looking at the inlets from the side, the shape of the "scoop" should be curved to match the curved line of the door (see 2nd pic). This would keep a very much OEM look to it. Just my $0.02 right now..

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

[url=https://flic.kr/p/wg1wYe]

 

That is nice of you to offer to collect on the shipping. We'll see what it costs - I'm thinking it shouldn't be too bad as they are light. And they can either go back to a business partner of mine in Montreal or my folks place in MD, so that should be less.

I am very curios. Looking fwd to results. Have you put thoughts into testing? If you stick to measuring ambient and IATs alone I think you may be working with too many variables. Pressure at the narrowest part of the ducting over the wheel vs. speed?

 

Just as a reference to compare with pwdrhounds pics...here is a 991 Turbo...they are way out there to catch max air...

 

I have extensive logs of IAT from running at my track. I also have an IAT display on board that I glance at frequently monitoring IATs. In the next month, I will have a Motec data logger / dash installed on the car which will further provide more data allowing me to do a direct before and after install comparison. I have tons of lap data from my track which offers a reliable and repeatable environment. I will PM you Joe's address a few minutes. I sent you a PM earlier which I assume you received. Thanks Steve...