Thanks Burch and Estorvito. I keep the 350 hp and 750 hp Precision intercoolers in stock if anyone wants to check them out in person.
Here’s a thread I made on bar and plate vs. tube and fin from a couple years ago if anyone wants to continue their reading:
http://www.nyspeed.com/forums/showthread.php?t=6056
[quote=“turbo ls1 ss,post:29,topic:39539"”]
take my last setup and respective turbo
76gts @ 15psi through a 6L LS1 = max efficiency
the same as
76gts @ 30psi through a 1.8L B18 = max efficiency (<–for sake of argument, idk exact values)
in both cases, the turbo is working EQUALLY as hard to produce said MAP.
why is MAP higher in B18? simply put, LESS VE. but again, TURBO IS WORKING EQUALLY AS HARD, heating up the air EQUALLY
in these cases, bypass efficiency loses between turbo and TB
i do understand/agree that SINCE the smaller engines DO need that extra boost, they will have that added heat DUE to boost. but that is half the riddle for why there is heat in the charge when bypassing path between turbo and TB
[/quote]
Just to clarify…the VE isn’t necessarily higher on the LS1…it may even be lower. That’s a measure of engine efficiency and I believe you were trying to say airflow may be similar? You seem to be talking about something the turbo is doing rather than the engine…
Also, when you say the turbo may be working equally hard, I’m guessing you’re talking about similar shaft speed? You can have equal shaft speeds flowing different amounts of air depending on the airflow of the engine
In a situation with two engine like you mentioned where one requires a higher pressure ratio to flow the same amount of air as the other, the heat created will actually be different depending on the compressor efficiency range each setup is operating in. At some point as PR increases you’ll run into lower efficiency than a lower PR setup flowing the same amount of air and compressor discharge temps will increase.
[quote=“neonglh,post:59,topic:39539"”]
Just spray some meth if you are getting high temps. I made almost 400 whp on the stock SRT intercooler, and that thing is the size of my arm. I think it was said great above, you can do just fine with an eBay core. I have a few friends making well over 400 whp with them. If you spend the extra money on a nice core, you’ll be better off, but its not 100% necessary, thats for sure!
–mark
[/quote]
Eh…since he’s looking to get a new intercooler, and buy the right one for his setup, I have to disagree. Sure people have quick cars with bad intercoolers, but he’s trying to increase the efficiency of his setup and do things the right way. Ebay intercoolers cool horribly so like Don said, if you’re running enough pressure that you need any significant cooling, get a good one.
A lot of Honda guys make good power on crap ICs because they buy massive laggy oversized turbos and then run low boost on them. It doesn’t take a great IC to pull that off. 
