Haha I was going to ask if I could buy them
Good work on these John, It would be awesome to finish a session with the car feeling the same as when you pit out.

 

I'm pretty confident these will be a game changer Park. Based on the results and data I've seen on other slightly smaller Aerospace cores like those used by Rennlister TB993tt on his 997GT2, our cores should be a home run. If I recall, TB993tt spent in excess of $12K on his ICs about 5 years go. Secans were $18K at that time. Really looking forward to getting these done.

 

Have you been back on the rollers since your motor build? I would expect you picked up some gains from that...

 

I have not. I will put it back on the rollers in the spring. I would imagine the engine may have picked up a few ponies now that it's fully broken in. We'll see.. I have to get it in the shop in the next month or so as we are going to be installing and testing SRMs new return-less fuel system. Once everything is buttoned up with the intercoolers on, I'll get it back on the dyno.

 

There were a number of guys who bought the Marston-based ICs in TB993's thread - at GBP10000/pop. And the same Marston-based ICs are still on several websites including Cartographic (IIRC) at a similar price. I can only assume that there will be a number more at roughly half of that price. Although it will, as John says, remain a niche market.
I would tend to disagree with a blanket statement like this. Depending on the design of the core, I think one easily imagine a scenario where an IC is too restrictive on the cooling air side so that a thinner core is actually more effective at a given air flow/air pressure. For instance, I think with the scoop IC ducts (other thread) one could potentially run thicker, more restrictive (for the cooling air) ICs than with stock ducts - simply because there is more pressure.

Too many variables...

Very, very cool project, John.

 

Correct. With regards to the Aerospace cores, the pressure drop on a 3.3" core is 0.25psi while on a 4.0" core it is 0.30psi for example. It is negligible with substantial better cooling efficiency going to the thicker core.

 

What's interesting is that we have suction dropping behind the intercooler so air from the top side flows through more easily. I bet few manufacturers test with suction behind them! I'd love to see some track testing with a thicker core that's more reasonably priced for us muggles ;-) I'm betting it would surprise a few lol

 

Suction helps pull the air through the core. Someone would have to rig up an airflow sensor ahead of the intercooler core in the duct to determine the speed of the airflow relative to the speed of the car. I'm using a conservative figure of 15% efficiency. It could be more however especially if using the inlet scoops which will force larger amounts of air into the duct.

 

Fully agree, I seriously look forward to data on those scoops! I can't see how they wouldn't help but the price is high enough I want to quantify it. Since even at full throttle right now my temps out of the coolers are pretty close to ambient, tests by others will have to provide data. I look forward to turning the boost up real soon tho and finally stressing mine. Lots to learn here, really appreciate you guys doing these and providing whatever data you can.

 

Sneak peak at the Aerospace cores which have finally arrived. Look at the fin density!! Unlike anything you will see on any of the aftermarket intercooler cores. Not even the same league. The logistics and cutting through the red tape of importing these from a company that supplies the military/aerospace markets is extensive. These will be a game changer..

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

 

Congrats john!! Wont be long now

 

I would like to see these tested back to back with the .2's

 

I have the 997.2s on my car now. I will have extensive data for both from Motec on a closed road course environment.

 

I admit that I selfishly want to see the .2's do well as I have them! I can't swing 7k for coolers. I am considering upgrading in the future but for 600hp these are fine for now. I was at SRM a few weeks ago dropping my cases off to be drilled for 12mm studs. Nice work being done there for sure.

 

i doubt theres a core anywere that will keep up with these cores. they are in a league of their own