Intercooler IAT data, show me yours
Friends, I believe it has come time in my setup to upgrade the intercooler. Currently I'm using a 350hp vibrant intercooler. I can't remember but I'm pretty sure my core doesn't have the better turbulators in the core. So I'm seeing IAT's get to to around 45-50c when ambient is somewhere around 30ish. Using a program similar to virtual Dyno shows a correlation between my intake temps and power dropping past 6k. I am aware the BP is not a great flowing engine up there but the intercooler isn't helping matters.
Quick details on my setup built bp4w FM manifold/dp/3" exhaustGTX 2860r gen2 750cc ev14 93 pump gas 8.5:1 compression https://cimg6.ibsrv.net/gimg/www.mia...5dcfa5addd.jpg https://cimg2.ibsrv.net/gimg/www.mia...872c9aa49e.jpg I have other logs in 4th gear that show slightly less drop up top, part of the drop could also be doing a pull in 5th gear with the top down is increasing drag coefficient. Either way I'm really looking hard at the precision 350 and treadstone tr6. Precision is rated to 350, treadstone is 400. I don't want to go much bigger because it's a street car and I don't want to cut things up. Anyone have some interesting data for me to look at? Thanks |
Also if anyone is wondering that's a gtx2860r gen2 running 22psi and it gets full boost at 3800 rpm .63 turbine a/r.
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https://cimg1.ibsrv.net/gimg/www.mia...a1afc3b186.png
84.7f was around my peak in 65-70 degree weather. Ebay t3 with mystery FMIC. Boost topped out at 13psi, completely stock motor with 440cc injectors. I was only making ~200whp so there's a big difference in heat between our setups, but I'm surprised you're seeing that much more heat. |
I will try to get a log for you this weekend. I'm running a gtx2867r at around 20 lb
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Originally Posted by intenseapple
(Post 1574205)
https://cimg1.ibsrv.net/gimg/www.mia...a1afc3b186.png
84.7f was around my peak in 65-70 degree weather. Ebay t3 with mystery FMIC. Boost topped out at 13psi, completely stock motor with 440cc injectors. I was only making ~200whp so there's a big difference in heat between our setups, but I'm surprised you're seeing that much more heat. |
Originally Posted by sixshooter
(Post 1574220)
I will try to get a log for you this weekend. I'm running a gtx2867r at around 20 lb
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I highly recommend you addressing the flow through the intercooler and up through the hood first. I had huge gains when I put in hood louvres. So much so that I had to block half of the air in the winter because I never could bring it up to temp.
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Originally Posted by Mudflap
(Post 1574240)
I highly recommend you addressing the flow through the intercooler and up through the hood first. I had huge gains when I put in hood louvres. So much so that I had to block half of the air in the winter because I never could bring it up to temp.
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Originally Posted by andyfloyd
(Post 1574238)
Thanks for the log I appreciate it. My IAT was lower when I had the 2560r running 17psi. But I was making less power so the intercooler wasn't working as hard. I think I just reached a point where it can't keep up anymore. This was also a long 5th gear pull which is worst for heatsoak, kinda a torture test for the intercooler.
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Originally Posted by intenseapple
(Post 1574243)
No problem, mine was only a 4th gear pull so that's another factor. Out of curiosity, are you directing air through the intercooler/radiator with a shroud or anything? I don't have any experience with it personally, but it seems like buttoning up the airflow to force it through the IC and rad makes a huge difference...
I'm about to pull the trigger on a treadstone tr8 which is rated to 500hp and has a lot of turbulators. I like the precision 350 but it's roughly the same size as the vibrant I have now. Even though the precision has a really good core is small size could be a limiting factor. |
Can't go wrong with a bigger IC! I'd look into doing some ducting too though, I've seen some pretty amazing results from adding an undertray and shrouding to direct air where you want it
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Originally Posted by intenseapple
(Post 1574249)
Can't go wrong with a bigger IC! I'd look into doing some ducting too though, I've seen some pretty amazing results from adding an undertray and shrouding to direct air where you want it
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Here is my extreme example. 1/4mile run, 100F day. I'm pushing 25psi and around 350hp to the wheels. This is a FM intercooler with no hood openings.
That is a 90degF rise in manifold air temp (IAT), measured just after the intercooler, in 12 seconds. Look at the insane rise from 2seconds to 8seconds. That is a 70degF rise in 6 seconds!! After this, I changed my intercooler to the WAY bigger Ebay version and put in hood louvres and put in ducting. I'm still waiting to go back to Bandimere to get another run in. https://cimg7.ibsrv.net/gimg/www.mia...1a9f475453.png |
Originally Posted by Mudflap
(Post 1574369)
Here is my extreme example. 1/4mile run, 100F day. I'm pushing 25psi and around 350hp to the wheels. This is a FM intercooler with no hood openings.
That is a 90degF rise in manifold air temp (IAT), measured just after the intercooler, in 12 seconds. Look at the insane rise from 2seconds to 8seconds. That is a 70degF rise in 6 seconds!! After this, I changed my intercooler to the WAY bigger Ebay version and put in hood louvres and put in ducting. I'm still waiting to go back to Bandimere to get another run in. https://cimg7.ibsrv.net/gimg/www.mia...1a9f475453.png |
I did all of those changes (intercooler, hood louvres and ducting) over the winter. Then Covid. So I'm waiting to get my butt back to the track.
First I need to let my 3.3:1 rear end get broken in. There is a joke in there somewhere.. |
Originally Posted by Mudflap
(Post 1574389)
I did all of those changes (intercooler, hood louvres and ducting) over the winter. Then Covid. So I'm waiting to get my butt back to the track.
First I need to let my 3.3:1 rear end get broken in. There is a joke in there somewhere.. |
I used a CRX Racing 27x12x3 sized core. They are below $300.
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Originally Posted by Mudflap
(Post 1574401)
I used a CRX Racing 27x12x3 sized core. They are below $300.
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I didn't forget to get a log. I just didn't get a chance.
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Originally Posted by sixshooter
(Post 1574531)
I didn't forget to get a log. I just didn't get a chance.
https://cimg7.ibsrv.net/gimg/www.mia...d48e716ac8.jpg And just for shits and giggles there is my Bay |
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