Ebay Intercooler Test, and lessons learned
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- Опубліковано 20 сер 2022
- A test that started off as a simple "here's how much power your ebay intercooler is preventing you from making", and then grew from there to a three way test with a local off the shelf intercooler, that now has me questioning what I thought I knew about these things but clearly didn't pay enough attention to.
For all your custom intercooler and other hotrod needs, hit up Greg at go-autoworks:
www.go-autoworks-store.com/
Greg has provided me with almost all of my intercoolers over the years as well as various other turbo-related fabrication - downpipes, charge pipe kits, turbos, bovs, wastegates, etc.
Air temp data for this test is not really all that valid, the sensor is mounted in the high ram, and has had a tendency to heat-soak, I would generally prefer the sensor to be mounted in the cold-side intercooler piping for insulation reasons and a more accurate depiction of the air temps going into the engine. - Авто та транспорт
Great information Kenny. Thanks for sharing. Now it's time for me to get rid of that exact intercooler on my 2JZ setup..
nice video !
I was going to get a Garrett core and this seals the deal. That's an impressive difference. End tanks about the same?
no, the Garrett core benefits (possibly/probably greatly) from different end tanks that are more conducive to even distribution across the core. I have some ideas that I'm working on, I'll post a video when I get to the testing phase
@@linuxman51 looking forward to the results.
Good video Kenny. More proof that testing is the only way to find quality information.
The lesson here is the same as in cylinder heads: Air is heavy and does not want to turn corners.
Can you link the Volvo/Ebay/Garrett video referenced? It's not obvious in your video list.
I thought we had a video for that test, here's the thread with all the pictures and what not. forums.turbobricks.com/showthread.php?t=358795&highlight=intercooler+test
I'll dig around and see if I have any video, I think it might have been one of those I thought sam was doing it and he thought I was doing it kind of things, so no one did it
What diameter are all these cores?
the garrett core is just shy of 5 inches thick, the other two are roughly 3 inches thick, even though the one with smaller inlets looks narrower. I hacked it up for a quick(ish) and dirty(ish) end tank modification to see if my thought process is in the right place.
How could a better core work better if all the air only goes through 1/3rd of it?
You can flip one of the end tanks to force the air to flow more evenly through the core. That's still not going to fix the issues of the flow having to turn 90 degrees and travel up the full height of the intercooler.
You should borrow an IR camera for these tests.
If it'd been a more planned out test instead of the ad-hoc experiment-leads-to-test that it was, there are a couple of things I'd like to have done differenly... I would like pre and post intercooler map sensor readings, pre and post intercooler air temp readings (that aren't greatly skewed by the heatsoaking going on with the intake manifold), and like I said in the video, initially I didn't think about the end-tank design, however in an attempt to a) reconcile a false assertion and b) solve the issue both for my own edification and ultimately the customer's horse power goals.
I have some ideas, I may see if I've got enough scrap stuff laying around to modify the other ebay intercooler (not the one used in the test, the one that was included as a talking point) re-shape how air enters and leaves it. the air going through is not just using the bottom 1/3rd, the top of the core was warm as well, but if one considers how air might flow through, I wouldn't expect significant airflow to go through the rest until the bottom 1/3 is essentially choked off. the resulting turbulence I imagine is what is creating a lot of this pressure drop
@@linuxman51 if you put an aluminum can in 1" of hot water the top will eventually get warm as the heat spreads through the can. The whole IC being warm is not necessarily an indication of the air flowing through the core. I would imagine you could maintain a steady engine load (airflow) and see a similar result
@@JohnDoe-mx1sq no doubt, for this though I didn't really leave them on the car for a ton of radiant heat to get spread around. regardless, from an airflow perspective these end tanks do leave a lot to be desired.
Is your source for you wastegate before intercooler? Maybe that's why the wastegate sees more pressure than the manifold. If you want better tests try to measure pressure before and after intercooler.
certainly. also pre and post intercooler air temperature readings would be nice too.
@@linuxman51 so where is the wastegate source from, pre or post intercooler?
@@mihailpetrovici5044 it's mentioned in the video (I thought), compressor cover, so pre-intercooler.
@@linuxman51 didn't get it, thanks. So probably the intercooler is less eficient and that increase in 1-2 psi of pressure stacked before the intercooler opens the wastegate earlier
@@mihailpetrovici5044 that's what I was thinking as well
Yeah... no.
Check for boost leaks. Common sense! You're not gonna lose 25% of hp because of minor differences on intercoolers. Something is NOT right.
🤣
next time, just recommendation, try to show other things while you talk. Pointless watching minutes of a screen, nothing else. Divide it on before and after, the rambling is migrainatic painful.
I was buying into your findings, until description is selling their own intercoolers.
there's a short version of the video for that.