i was driving to school this morning and had the idea of using the stock intercooler and a frount mount to effectively double the cooling capacity of the system has any one done this? is it possible? when you get a front mount theres no use letting the sexy TII hood go to waste!
Thanks Tony Montana

 

Some people have welded 2 stock TMIC's together and fabbed up piping as a FMIC application.

 

the top one is more of a "heater".... if you have a front use it by itself

 

There's actually a company out there that sells a kit to do just that, run a FMIC and your TMIC. I wouldn't do it though, but that's just me

 

yeah, the stock one is not in a very effective place. Novel idea but I don't think results would be worth the extra fabrication work or $$ to buy a kit. Also, the extra intercooler may cause slightly more lag.

 

I just realized a read the thread wrong. Anyways the extra weight and piping wouldnt be worth it.

 

search for BLUE TII, and intercooler. He's got a really neat custom one.

 

they sell 1.5 stock welded one, cheap and.......at least better than stock.

 

I'm sure you'd be screwing up some thermodynamic principles somewhere in that plan

 

well think about the pressure drop.

if you also have a front mount and jioing it up the top mount you may intern be heating up the air.

the greddy i have is huge... like 3time the volume of the stock and i have boost hesitation issues from 1-5 pound between 3200 to 4000rpm

the intercooler is basically lots of smaller pipes
so the more pipe you add the worse the lag

 

The (supposed) advantage of the TMIC is the short pipe lengths. That's the only thing in it's favour. The big downside is heat-soak from sitting over the engine.

So running pipes to a FMIC negates the advantge of short pipes, while retaining the heat-soak problem. So this idea would actually be worse than having either a FMIC or TMIC.

 

The advantage of a the stock TMIC (quick spool), outweighs the advantage of frontmounting the stock. At least for me.

I won't change the IC until I can afford a kit.

 

do you know how fast compressed air moves through pipping, like maybe tenth's of a second would be the difference between a front mount and Top mount... if not less time than that... I think the top mount was to save $$$

 

Anyone with a well-designed FMIC installation will tell you boost response improved, mainly due to lower intake temps. Hot intake air from a heat-soaked IC really knocks the edge off an engine's performance.

 

And save money I shall by keeping it in the stock location.

 

speaking of the heat soak, is it possible to put some sort of insluation underneath the intercooler to prevent this? or is it inevitable

 

Surround the whole thing with header tape! Then dynamat it to make it shut up!

(Sorry, couldnt resist)

Nah, insulating your intercooler is counterproductive. The whole point of the unit is heat exchange!

But I know what you mean, (Covering the engine and turbo) you can fab up some extra heat sheilds using metal peices (Insulate with strips of header tape if you want, then weld a screen over it to hold the header tape to the heat sheild) and put them around your engine bay wherever you see the most heat coming from (Turbo, DP, etc)

 

technically that's not the problem with adding more piping. you need to take the total volume of both systems and look at the difference in time to pressurize the entire length of piping. of course we're talking tenths of a second, but off boost to on boost, a tenth or two saved is important.

 

you no what would be tight if you could switch intercoolers on the fly like having the top for cruising sppeds and then swtich to the front when more cooling is needed. i just woke up so don't flame me to bad could it work?

 

Lag = How long it takes the turbo to start spooling
Boost response = how quickly you get boost after you hit the gas.

Basically boost repsonse is how long it takes to compress the entire volume from turbo to manifold. Lag is after this has been compressed how long it takes to get to full boost, or desired boost. Boost response is to get to 0 vacuum.

- Steiner

 

You're making up technical definitions for two common-use subjective terms which are used to describe basically the same thing. There are no measurements associated with them. Lag is simply the delay between putting your foot down ad the boost reaching a point where meaningful acceleration is felt. Lots of lag = bad/slow boost response; little lag = good/fast boost response.

 

Like you said NZConvertible they're very subjective terms...

I'd like to add I use the term lag to define 'when'(what rpm) the turbo will start producing +ve pressure in the inlet.

Boost response I'd term as being how responsive it feels i guess..

Oh damm.. I just confused myself even more now and I just woke up after a big sunday night out...
...i'm going back to bed.

ps- Your intercooler idea, superstock2, would take way to much arseing around to get working even close to good... And a good engineered FMIC will be better in just about all circumstances than a top mount really.... Especially in 'cruise' conditions.

 

Sorry I'm just tired of people using these terms interchangeabley, when they are not the same. There are differences. Go to any turbo manufacture and they'll tell you yes there is a difference between the two.

- Steiner

 

just curious, what hp gains have u seen using an fmic as oppsed to the stock tmic?

 

nice, but wrong.

Boost threshhold - lowest spooling RPM
Lag - time between off throttle to on throttle boost response.

these aren't made up, they're from Bell's book.