Thanks for posting the images, Partsman! I don't know if we could ever measure the impact of air-streaming the flow through the DFIC, but thanks to you, it inspired me to do what I had wanted to do ever since I got my DFIC up at MITM. It sure looks *right* and cant' hurt, that's for sure. The airfoils add about 2 oz total in weight.
As I said, I had problems with the grommets on the Aerogel blanket, because I am not running the M7 diverter, but one of my own design. It tries to send a little fresh air under the IC, which causes some interference with the Aerogel grommets. I've no doubt that Peter's more extensive experience will hold true for all those who are getting this new addition to the thermal control arsenal.
I am very confident that the M7 boots will provide the best seal of all the available options--there's no doubt they are more pliable than the other silicone boots I've used.
Peter--was there enough M7 logos in the 3rd photo? I count 3 -- maybe I need one of those valve cover ones...

 

I'll see if I have any left from the last batch...

Here's another image of the grille.

Peter
M7 tuning
562-608-8123

 

Did you add them to the inlet side of the core?

I may try to open up the "square" in the radiator support, the one under the green sticker...

and try to duct some air underneath the DFIC.
I'm not sure if this is in response to my "side note". If it is, I meant grinding off the cast in 1/4" dummy bungs in the front of the tanks. See the front of mine in this pic...

nice and smooth for the diverter rubber seal to seal it off.

 

No, I understood what you were meaning about the bung dummies. I was actually going to keep them as Peter has told me they will accept probes, etc for even more measurements... My diverter will seal against the welds once I put the rubber gaskets on--not in my photos as posted.
I was actually talking about the IC inlet and outlet boots--I had been waiting for all the mods to do at once--the airfoils, the blanket and the boots. This weekend was the right time. These boots are really good.


cheers,

 

Just a quick question to Dr Phil and Partsman - where did you guys find the half round aluminum stock to JB weld to your DFIC?
I've looked at our local RC Radio Plane shop and they don't carry them.

Thanks, I'm always interested in what you brainiacs are working on, it betters us all.

Paul

 

Phil your killing me....

The bung and the area around it, is for a new product I'm working on
And it is for cooling..

peter
M7 Tuning
562-608-8123

 

The boots are very good. I am pleased with them also.


I milled mine from 1/4" round aluminum round bar. DrPhil found his at a local hobby shop.

 

I'm still very curious to see what this will look like and how it will be setup.

 

Nice. That looks pretty cool.

About the foam on the diverter, how well does that work? That's the first i've seen that way.

 

It's part of our new foam package..
The bottom lip of the DFIC scoop lands on the foam strip
preventing any air from escaping in that direction.

peter
M7 Tuning
562-608-8123

 

Cool. I'll have to try that.

 

Here are the numbers from this morning's run to work.

Conditions: cold, fresh air. Some moisture/humidity. Highway cruising 3000rpm 6th gear.
IC was heat soaked after a 15minute wait in traffic to drop my daughter off at school, stop start jammed up.

(all temps F -- instrument in parens)
ambient: 27 (MINI probe)
airbox: 25 (drP probe)
SC out: 175 (VR gauge)
IC out: 55 (VR gauge)
IA: 48 (ScangaugeII)

TE: (175-55)/(175-27) = 80% approx.

That's a 28F approach. I've more often seen 20-10F approaches so I don't think the IC had enough time to settle down after the heat soak.
IN terms of TE, though, this is about what I was seeing before, so all my mods (FAD, Aerogel, airfoils) don't do much better than my big hole scoop alone...
Or not

 

Thanks for the numbers, DrPhil.
Cruising at 3000rpm, were you showing boost?
I think being into boost while you're taking your readings may give you a better idea as to the effects of the mods.

 

I doubt there was boost. This has been one of the "measurement topics" since Dr Obnxs always measures the IC pressure drop and TE at WOT in 2nd gear. Others, like me, measure it at cruise, no boost, etc. TBH, I only do it my way because I'm manually logging the data--I would really like a 4 temp and 2 pressure data logger that I could just plug into my laptop... It's just too hard, without a passenger (and why add all that weight?) to log all the data that I'm generating at the moment.
...but your point is well taken. From past measurements, I'd say that while TE falls under boost conditions, the improvement in TE might actually be greater.

I installed the rubber gaskets for the diverter to the IC, and that puppies nice and sealed now--all the air coming in the RBH scoop is going through the IC, I have no doubts at all! The FAD is also sending lots of fresh, cold, and this morning damp, air into the airbox--the airbox temp is actually colder than ambient! sweet...

Are we gilding the lily, Partsman?

 

Most definitely. Since the DFIC excels at cooling the charge air, to truly know what it's doing, there needs to be boost.
I can get 15psi in 6th gear on the highway, the car just pulls, smooth as butter.

I really don't think so. Although it can't be measured at the moment, the air IS accelerating quicker into the core.

Airbox temps lower than ambient is great, nice job!

 

Phil, I still don't understand how your SC exit temps are 175 F while cruising on the highway (no boost situation), and the ambient temps are like 27 F! Not that I doubt your experimental technique or equipment, but this is just so much higher than others have posted (see Andy's early work) or what I've seen myself (~55F day, 120F SC out). And I've even got the VGS hooked up! Could there be that much difference between SC performance?

Partsman, it would be nice to measure TEs under boost, but the trouble is getting steady state conditions. For example, I find TE is highest under short term acceleration, probably because of thermal mass in the IC. I think it is better to use steady state numbers from non-boost conditions rather than unsteady state in boost. Agreed, the ideal situation is steady state boost, and there is a hill that I drive everyday to work where I can get about 20 sec of steady 5 psi boost in 6th gear. So, this might work. But heat transfer is heat transfer, so if the TE improves under non-boost conditions, it WILL improve under boost conditions!

 

I agree, inimmini--but the temperatures before the experiment are consistent--every gauge measures the same temperature within 1F when I get in the car in the morning. So if the SC out temps are high, then that probe is measuring non-linearly. I did put the VGS back in for smooth pulling, and we know it does raise temps, but only about 10F. My SC out temps are consistent with those reported by M7 and Webb on other threads, and at earlier times.
TBH, your temps are consistently the lowest I've ever seen reported. I too don't doubt them, becuase I really wish I had an intake system that ran that cold. But your IAs aren't all that much lower than the ones I'm seeing, if I remember the charts you posted--although ambient was much higher. And in the end, it's the approach that's important. The 28F approach reported above is one of the highest I've seen over the last couple of months. Normally it's 10F cruising, and 20F in traffic, rising to 40F in jams and idling for minutes.
Still, I'll keep reporting temps, and by the end of this year, we'll have a good range over lots of ambient temps for one car, at least!
Concerning SS verses transitional TEs--as we all know, these IA temps jump around all over the place--it's very difficult to get a good "picture" of what's really happening. Auto logging tools would help, for sure.

 

I went back and looked at the IC TE thread: obehave posted some TEs, 22 in total and the average approach is 17F. inimmini posted in the same thread a table with 9 observations for an average approach of 12.7F
I'd say 10-20F approaches are reasonable for our ICs, and pretty darn good in the world of ICs in general!

cheers,

 

I agree.

Unfortunately, I do not have the equipment(yet) to gather data, so I can offer no input, sorry.
I do know that my car runs like a raped ape, when it's cold out.

 

Any thoughts about having a few sets of those half-round pieces (inlet side and front air intake) made up to sell to us DFIC owners who can't easily get it done?

I'm serious.

 

I'm not sure that I can sell them to you as I do not have vendor status here on NAM. If you would like to buy the 1/4" aluminum round rod, ship it to me, I can mill it for you.
This is where I bought mine...
http://onlinemetals.com/merchant.cfm...owunits=inches
4- 2' pieces would be enough to do the inlet side and the front face of the core.

 

PM sent

 

Joaquin...this is what I was talking about ...is this your picture?

 

I wish I had those for the outlet, those are DrPhil's. He did a nice job.

 

Phil...how did you make those trailing edges? They would be great for leading edge too