 Idea: Twin Intercooled |
 Oct 8, 2003 - 6:08 PM
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 Enthusiast  Joined Jan 30, '03 From Virginia Currently Offline Reputation: 0 (0%)  |
Several people have inquired in the past about Twin Turbo. More recently it was discussed that a Twin Turbo setup on a four-cylinder is completely pointless. We all know that turbo's create unwanted heat. I had the idea, while sitting in class today, of a Twin Intercooled engine. I don't know if anyone has ever done it, but I'd like to ask about it.
We all know that the 3S-GTE has a Top Mount Intercooler. I've read threads about putting a FMIC (Front Mount Intercooler) on a 3S-GTE engine. People have said it is possible, but it would need custom piping. So, this brought about the idea of a Twin Intercooled engine. I figured if a person could mount a FMIC on a 3S-GTE (with custom piping of course), then why couldn't they simply connect it to the TMIC and have double the cooled air charge. I figure it would keep a high-powered engine MUCH cooler than normal. I also figured it was possible since there isn't a FMIC stock with the 3S-GTE engine, therefore there is the space to do it with. Get back to me, people! I appreciate all who contribute! This post has been edited by Inferno: Oct 8, 2003 - 6:08 PM |
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Oct 9, 2003 - 2:42 PM
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 Enthusiast Joined Aug 29, '02 From Dallas, Tx Currently Offline Reputation: 0 (0%) |
For starters the difference in pumping losses between a TMIC and a FMIC aren't going to be much. You'd have a lot more loss from the pressure drop across the intercooler than you would from the piping. So thats not really a valid argument. Second, underhood temperatures do matter. The engine might be 'water cooled' and although a large percentage of its cooling comes from that, the cooling due to air circulation is not negligible on high-powered cars. Why do you think lots of touring cars have hood vents? If its good enough for factory BMW teams, then its good enough for me.
The heat in the intake charge is due largely to the compression of the air. It doesn't really matter how 'long' it takes to pass through. As far as getting air 'quicker' thats totally a misnomer. You have to think of the intake charge as continuous. Turbo lag isn't at all a result of 'how quickly' you get air into the engine, its a result of the time it takes for the rotational speed of the turbo to increase enough to make boost. Back to the original question in the post. Its not worthwhile to have to air to air intercoolers for all the reasons that everybody else stated, they're all pretty much correct. It might be feasible and beneficial to have an air to air and a water to air intercooler. The added complexity may not be worth it on the street but when drag racing you could fill the water resivor with ice water and keep everything that much cooler. This wouldn't really make sense on anything that wasn't really built up. One thing you have to keep in mind with all this intercooler talk is the efficiency of the core used. This will effect both the pressure drop across the intercooler and the change in temperature of the intake charge across the intercooler. The efficiency can be affected by many things, but you should always keep it in mind when choosing an intercooler. Spearco is one of the few companies that I know of that actually takes the time to know what their efficiencies are and as a result, they make about the best intercooler cores you can buy. Theres a good reason why they're so expensive. 
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Posts in this topic
Inferno Idea: Twin Intercooled Oct 8, 2003 - 6:08 PM
sphinx YES. you can do it. but once again, it's point... Oct 8, 2003 - 6:31 PM Inferno I know why people ugrade to a FMIC. But I was jus... Oct 8, 2003 - 6:39 PM jayi12-15psi yea, but just the idea of the fact that the fmic w... Oct 8, 2003 - 6:53 PM Inferno Are you sure? Cos if you think about it...the TMI... Oct 8, 2003 - 7:27 PM Xpander If you were to run both a TMIC and a FMIC you prob... Oct 8, 2003 - 8:16 PM FallenHero Agreed. Two intercoolers, while making the intake... Oct 8, 2003 - 10:31 PM 97sccelica 1. boost pressure would drop by about 1psi
2. boo... Oct 8, 2003 - 10:37 PM 1bwilson QUOTE (97sccelica @ Oct 8, 2003 - 8:37 PM) 1. boos... Oct 8, 2003 - 11:18 PM jayi12-15psi it would be sick and I would throw up Oct 8, 2003 - 11:44 PM Chrobis I agree with pretty much everything said... the be... Oct 9, 2003 - 12:34 PM Supersprynt You gotta realize that the GT4 was a rally champio... Oct 9, 2003 - 12:57 PM Supersprynt What im saying with the time it takes for the air ... Oct 9, 2003 - 8:08 PM 95ST If you are concerned about cooling your temp more ... Oct 9, 2003 - 10:15 PM
SpedToe169 QUOTE (Supersprynt @ Oct 9, 2003 - 7:08 PM) What i... Oct 10, 2003 - 9:16 PM |
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