english?

 

que?

 

Obviously English is not his native tongue but probably much better than your or my German. He's not that hard to understand, really. I've lived in Georgia for a long time and I can bet you his English is better than most there....

 

I think he's saying that excessive pressure drop through an intercooler core is bad since the turbos have to do more work, heat up the air more, lower density, less power, etc, etc. Though the expansion talk applies more to the 997 GT2 intake manifold. Anyways, same thing as Tom@Champion and Markski are getting at.

and I would completely agree that flow is a huge part of the equation for IC performance. However, I don't think the flow limitations of these .2 coolers is known yet. Since dynos can vary greatly depending on the type and correction used, lets speak in terms of 60-130mph in regards to what the 997.2 coolers have demonstrated. Yes, its too short a duration to tell much about cooling capability (unless its significant), but if they present a huge flow restriction that some may be implying, it'll show up pretty quick.

Here is the pump gas 60-130 vbox graph pulled from the built 997 (big vtgs, 997.2 coolers, rods, 8k rpm redline, etc) that did the previously shown back to back Evo clubsport vs .2 cooler IAT comparison:

5.8secs on a 0.5% decline with what I think we can all agree on is a pretty long shift (the 60-130s with the better flowing Evo coolers were in the 6s)



Comments from this 997 owner who, incidentally, went through several IC iterations:
So there you have it, I think its pretty clear that these .2 coolers don't represent a significant enough flow restriction to cause performance degradation on cars making enough power to turn mid-hi 5sec 60-130s.

Beyond that, who knows -they may hit a brick wall, they may not. Hopefully we'll find out where the monster coolers take the crown!

 

Again, reading comprehension needs to be stepped up on your part. I said that IATs were one of several important variables. That is why I said.....I have actually said it time after time, but for some reason you aren't grasping the concept, that the top tuners like Protomotive and Switzer use the ICs that they use is to improve performance. Markski was analyzing the issue over 6 years ago.

Do you really think their businesses would continue to thrive if they were selling bogus products that are expensive yet do not improve performance? Todd K doe not even sponsor on this forum anymore because he has more business than he can handle.

You guys are amusing, you come onto our forum, with a very limited amount of experience with these cars and are on a campaign to debunk truths that have been fully vetted add infinitum (many of us are still laughing about you claim that tippys are faster in big power cars than 6 speeds).

 

Interesting data...but as I have argued, I think the 4.5s and 5 inchers from Proto, 911, and Switzer are a significant advancement over the EVOs. I believe the EVO R and D was more than 6 years ago, whereas the Prot ICs that I and the Walnut have were designed about 3 years ago.

I do tip my hat to your for the comparo you have done, but as has been said, I would really like to see the 997.2s compared to the more recent and larger ICs. I do know that flow rates were a big concern when they were developed.

 

Not sure who all this is directed at but think of it this way: 2 days ago you knew that Clubsport coolers were better than Porsche's latest for a 600rwhp car, yesterday you weren't so sure.

My intent with these exchanges is/was not to hurt sales or insult the awesome work and innovation that companies like EvoMS, Proto, Markski and Champion have done over the years (the companies that rebrand $20 Chinese cores can eat a bag of d!cks, however -you know who you are), rather its to share data so that the community can learn and grow from and to make educated choices from. If Porsche makes it better, the aftermarket must adapt and make it even better -thats a good thing!

Thanks Sean, though a lot of the credit goes to the 997 community. I would love to see this type of comparo as well -I'm also interested in what became of the newer Evo cores you linked previously.

Anyways, I'm out to do the one thing we can all agree on -wring out one of the best supercar deals on the planet!

 

Earl, do you know if VTG turbochargers create greater EGTs than comparable Alphas or non variable turbos? I know VTGs are notorious for creating massive amounts of heat - I have not seen a comparison to how they run against traditional turbo setups. I wonder if the improvement in the 200-300 times would be as generous in a traditional turbo setup.

 

Hi Bob, not sure on that one. I'm in the same boat in that I've heard they run hotter -the logs we've seen indicate they do creep into the 900s but I havent seen any traditional turbo sustained pull EGT logs. The 200-300 time improvements may very well not be as generous on a cooler running setup.

One other thing to consider and I forgot to mention is the effect that fenderwell intakes may have on the coolers -they borrow/steal a significant amount of air under WOT from the coolers so the relative IC IAT performance may be masked by those running fenderwell setups. Would be fun to quantify that one!

 

I was just joking. I'm sure you had to read it a few times too.



All in good fun.

 

I know, and I did read it twice. Sometimes we take English for granted and assume that everyone should speak it to accommodate us without realizing how difficult it would be for us to converse with others in their native tongues. English is the fourth language I had to learn so I can appreciate those that are bi or tri-lingual.

 

excuse, but i didnt know how much bad my english is.....sorry i learned it for my self most in this forum and i didnt have anyone to talk in english....

 

Your English is fine-- it is sometimes harder to understand the subtleties of a joke. Please keep posting-- I have never had a problem understanding you- as I am sure many others can also say the same thing.
While the forum is hosted in US-- it is a world wide forum with people from everywhere contributing--it makes it a stronger place--lets keep it that way.

 

+1, what he said /\

 

No apologies needed bro, I wouldn't have understood it anyways, the technical jargon is way over my head.