Hi!
I bought ssautochrome huge front mount intercooler 24x12x4. My friends told to me that it is overkill to my 13b-re. I build turbo upgrade with turbonetics T61 turbo, 1.5 bar max boost, 8000 max rpm, porting. Are my friends right?

 

I am going to have to go with No. Sounds sweet.

 

To big of cooling, is never an option :-D

 

There are lots of people smarter than me on this; let's hope they chime in, and do a better job than I do. Bigger is not necessarily better. The bigger the IC and the longer the pipes, the more volume you have to fill before you get boost to the engine. IMO, you should run the smallest IC that is rated for the CFM your turbo will put out. The rest just increases lag.

 

Its not all about cfm. ITs the comp efficiency. Once you are high up in boost #'s then bigger is better, since less heat is always better. The cooler you can get the air, the more power you make or have available. Not to mention decreasing your chances at detonating. With a bigger IC you might a bit more lag, but its defiantely worth it.

 

I would say that your friends are probably worried you might beat them with it Thats is a pretty common size for the fd/fc here in Japan, so as long as it does not leak it should be good to go.

kenn

 

Your friends are right that you shouldnt have bought that IC but its not because its too big. You shouldnt have bought it because its SSautochrome.

 

Thank you guys for different opinions

 

i guess you own one then... did lots of testing on it and somehow the test resuilts were that a huge, 4" thick fmic didnt cool the air.

Or maybe that the economy was hurt because he bought something from a company that sells a product someone else designed for 1/4 the cost. (only valid point BTW)

maybe you heard the welds suck?

well i own the 3" deep bar and plate one.... 24x12x3 and the welds are beautiful... the IC was shipped to my door the next day....

but its bad.... for some reason.

im sorry to open this can of worms AGAIN... but maybe thig guy has some info we should all know about.

 

Lots of good stuff here on IC sizing and lag:


http://www.are.com.au/feat/techtalk/intecoolersMR.htm

 

its not the size that would be to big to make a concern, but if it has a large pressure drop.

a friend of mine has the 4" version and has run a 9.9 on it so it will do fine fo anything a spinner can throw at it.

 

One thing that was not mentioned, the more you compress/boost the incoming air, the higher the temp increases, so the higher the boost, the bigger cooler you will need to to offset the rise in temp at high boost levels.

 

well don't forget that it's a Bar & plate IC.. if it was a tube & Fin I'd say you were in the ball park with it. but with thr bar & Plate you've outsized yourself too much the flow rate thorugh the IC will only become effectively cooled at the very top end of your power band. They flow way too fast and are not as thermally eff. with under capacity flow. Also 4" deep is not helping your cause, by the time the air is 1/2 way through the IC the temp differential between ambient and internal is about even.. so that other 2 " is just for storage capacity now. Water spray or C02 spray is NOW your best friend. Then thier is the issue of lag, that's a huge volume to pressureize and I belevie that the SSA is 3" in/out so if your whole IC piping setup is 3" as well... this is allot of volume for a poor little T61 to fill..

 

NUFF SAID. THE BIGGER THE INTERCOOLER THE BETTER THE COOLING AND THE SAFER THE EINGINE & TURBO WILL BE. As for keeping the engine cool. theres ways to get the engine cool also. its how you position the intercooler & pipes! My Greddy 3 row i more to the passenger side for the radiator & oil coolers to get close to the same amount of air


On a side note. i wouldnt have bought it because of SS autochrome. they have a reputation of selling crappy parts that last weeks. (espically there mainfolds)

 

my post above still stands.

 

Thank you, guys!

 

**** your misinformation. Their manifolds, yes, they are pretty lousy, i own one and the bracing fell off around 1,000 miles of use, the actual manifold didn't fail, but i Mig welded it anyway for insurance. The tubing is thick and the flanges are a perfect fit, they're what, $200? For that price, buy one, pay a shop $50-100 to reweld it and it's a quality manifold for still cheaper than anything on the market.

Mig welds might not be pretty, but this manifold isn't breaking.



The rest of their products fit well and work great, if they made their welds a bit better on the manifolds, they would be very good.

 

Bigger is not always better is correct.... You will get pressure drop and more lag. Plus those intercoolers are so big, size really has no effect on the cooling.. its how many fins it has to cool the air. And those cheap ones are big with only 4 or 5 rows. You could have a smaller intecooler and be much more efficent then those big ones..