24v vs. 12v intercooler

[ToolManTimTaylor]

Wow this is an old thread...

Yep and being a hot topic again I will move it over too.



Isn't there a difference between the early 24V's and latter ('02) intercoolers? or waas that just the third gen thang that got better side tanks aside from more surface area?

 

[Cooker]

The later 2nd gen 24v coolers were not painted like the earlier 24v ones.

 

[McDowra]

Ask Rip Rook about the improved aftermarket intercooler.

 

[BWatson]

Wow, go away for a few days and there's a ton of replies. Thanks for the input guys. I didn't even realize that the orginal posts were from 2002. :-laf Ooops. Not sure what I'll do now. I was only going to do it since I'll be doing a cam soon and will have to remove the intercooler anyway and also since I can get one cheap through my friend. So it might still be worth trying. Thanks again.

 

[Extreme1]

Yup, an old thread! I did dyno both back to back on the same day. The 24 valve made a few more horse (I forget the number but the it wasn't huge) but the EGT reduction was considerable. How much? I was nervous on the first run because it was getting hot. After the swap, no problem. If you really wanted specifics, you could try searching, I think I posted the numbers.

 

[Vaughn MacKenzie]

I see Banks has an aftermarket intercooler, but like anything else Banks I'm sure it's not cheap.

 

[BWatson]

"EGT reduction was considerable"



Now that's what I like to hear. I have a buddy with a 24-valve with injectors and the big comp box with stock turbo and stock exhaust and intake and he doesn't have any problems with EGTs. With my #10 plate and injectors I figure I am at the same fueling levels as him but I also have a 16cm housing on my turbo and a 4" exhaust and I can get into trouble with EGTs pretty quick if I'm not paying attention. Makes me sick how he can just lay into it and hold it there and his doesn't get hot. Maybe that 24-valve cooler will let me do the same. Got my guy checking on that cooler now so hopefully I hear some good news back from him on a price. Thanks!

 

[Cooker]

BWatson,

It's not just the 24v cooler that helps EGTs on the 24v's. The 24v head also flows better too.

 

[BWatson]

Yeah I know, but I really can't afford a ported head. I think I saw that you have to go to a stage II PDR ported head to get just a little more flow than a stock 24-valve head. I'm hoping that the 24-valve cooler with my exhaust enhancements will be enough to keep EGTs in check. Every little bit helps. If not I plan on putting in a cam soon and I have a H20/meth kit sitting in a box at home waiting to be installed. If I still have EGT problems then, I guess it is on to a HX-40. Man, it never ends does it. Sorry to get off subject.

 

[Cooker]

I just thought I would mention about the head and no it never ends

 

[BWatson]

Gotchya. Thanks Cooker.



Matt - (HoleshotHolset) - So is a Gen II cooler really an improvement over a Gen I cooler? I have a buddy buying a Gen I this weekend. After reading your post I said something to him about it. If I go to a 24-valve cooler, then I'd give him my 12-valve cooler for his new toy. Maybe I can get him to cover some of the cost of my new cooler. This may work out better than I orginally expected. Also noticed Piers is having a special on their boots right now.

 

[Todd T]

while in the topic: what are they doing to get these to hold 100PSI? for $800 plus your exchange it tells me they are using the cores and modifying them. anyone know what is done?



new tanks (ends) possibly?

 

[Piers]

A stock 12 or 24 valve intercooler won't hold 100psi... at least not for very long. I've cracked 3 at only 85psi. You should be able to buy a new 24v intercooler, no exchange, for about $625. 00. At $800. 00, someones making tooooo much money, the new plate & fin intercooler that Jim's testing won't even be that much & it does hold 100 + psi.

 

[nfox]

24v Intercooler

When i swapped out my 12v intercooler for a 24v i saw 75* egt reduction and i stripped the paint off of the cooler also. Oo.

 

[Todd T]

A stock 12 or 24 valve intercooler won't hold 100psi... at least not for very long. I've cracked 3 at only 85psi. You should be able to buy a new 24v intercooler, no exchange, for about $625. 00. At $800. 00, someones making tooooo much money, the new plate & fin intercooler that Jim's testing won't even be that much & it does hold 100 + psi.

Then they must not be stock. but that price still requires a core. check it out yourself on Haisley's site.



So they take your core clean it up and sell on the gray market for $300-$400 and then take you for 8 bones for a new 100PSI one. doubtful-they must be reusing the ends or something.



So Piers, am i gonna need one or these Jim is testing for my/your twins? I got the hx40-16/ht3b-26 set.

 

[HoleshotHolset]

So is a Gen II cooler really an improvement over a Gen I cooler?

The 1st Gen that my old 12-valve IC is installed in is an '89. So, it was a huge improvement over not having one at all. All joking aside - the 2nd Gen IC's look a bit bigger than the 1st Gens with OEM IC's - everything else equal... having more surface area is usually a good thing. Bear in mind that the 2nd Gen IC's are not a simple bolt in - they require some custom work to slap 'em in there... but it can be done.



Matt

 

[Todd T]

from the picture on Haisleys site it looks like about 27 rows.

 

[BWatson]

[QUOTE/] So, it was a huge improvement over not having one at all. [/QUOTE]



Ha, you know I though that might have been the case after I posted that. Good to know that it can be done though. Thanks. Dang, how do you do quotes on here???



Thanks everyone who has added to this. Through the posts on here, PMs, and emails I have gotten some really good info.



My intercooler contact asked me about radiator upgrades and fan upgrades. He brought up a good point that if the IC is taking more heat out of the charged air, then the radiator will be picking that heat up off of the IC fins. Is this enough to worry about? I'm guessing probably not. If so though, he suggested the possibility of a bigger fan. But that may steal more power from the engine which will negate any of the work I did. He is not familiar with this particular swap but he can understand why it would work. He's working on getting me performance curves for all intercoolers, radiators, and fans that will fit my truck to see if we can put together the best combination. I am also going to try to get him to look at some electric fan options. Just so happens that his company also supplies many electric fans to the various automotive companies. According to his calculations, the stock mechanical fan takes about 35hp to operate. Ouch! I've seen somewhere an electric fan replacement for the mechanical fan but I think it was like $700.



There's just a few other things to throw out there for people to think about.



Thanks again!!!

 

[Piers]

Hi Todd, sorry I didn't realise you were talking about Haisleys intercooler. No they are not stock, they do just as you thought, use your ends and install a better core. I don't know how they compare to mine, we had new ends casted, so there would be no core.