11-30-2018, 12:56 PM | #57 | |
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It that their test configuration? A F/I motor? I missed that part...that really wraps it up for me, then.
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11-30-2018, 12:59 PM | #58 | |
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True, but like I said, those people are pretty rare and at the pointy end of performance where 4-5 horsepower might make the difference between podium and non-podium finishes. In those very rare cases, it will certainly be worth the expense.
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11-30-2018, 01:08 PM | #59 |
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I think it's worth mentioning that the ITB testing is being done with an intake manifold and runner length that may or may not be optimized in shape and length. ITB's make it easier to test different runner properties, so the conclusions may change down the road as more experimentation is done.
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11-30-2018, 01:16 PM | #60 |
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We don't know that part yet. It's just blogged text without useful extra information. So nothing changes in addition that we just need to keep waiting for actual results/more detailed nfo to be released . Are there gains? Are there gains on NA? Or with FI only? Are gains of reasonable price/performancy? Nothing known yet. I mentioned FI only in way that i'm sure that both CSG & DT worked a lot with both misc FI & NA setups in past.
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11-30-2018, 01:24 PM | #61 |
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im hoping this is for NA. If your FI you can always just add more boost or getting a bigger turbo ect for more power.
Even if its only 10hp/tq through the powerband over an Ace350 setup would be good enough to take my money. 10 hp/tq to the wheel goes a long way in my setup where my car is down to 2400lbs
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11-30-2018, 02:19 PM | #62 | |
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11-30-2018, 02:25 PM | #63 |
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If people are calculating HP/$, they should just move on. These will likely cost a cheap turbo kit all said and done.
If you're looking to maximize your current NA setup and/or looking for the best throttle response and breathing on the intake side then I suggest you stay tuned for an official response from delicious tuning. There are a lot of people jumping to conclusions here with out a lick of info. |
11-30-2018, 02:54 PM | #64 | |
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I have a Harrop kit, so I follow Harrop's 86. They have a 2.L stroked/built motor running a TVS 1320 Harrop SC on E85 at 400+whp. I should preface the following by saying that this isn't definitive evidence that a larger TB is necessary, but nevertheless, you can see below that they went beyond their normal kit by making an accessory pulley system, so they could run a larger TB. This suggests that a larger TB would be beneficial in higher horsepower FI applications. By inference, ITBs would also be beneficial.
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11-30-2018, 03:32 PM | #65 |
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ITB's may have gains, but the primary reason is always throttle response.
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11-30-2018, 03:33 PM | #66 | |
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The ITBs are mine, and on loan to CSG/DT so they can play with it NA. It'll be a while, as there's talk of getting different sized trumpets to see what can be done without a manifold as well. |
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11-30-2018, 04:09 PM | #67 | |
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11-30-2018, 04:49 PM | #69 |
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If f.i. kits come down in price as well...
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11-30-2018, 04:52 PM | #70 |
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I was just calculating things for fun. The stock 65mm throttle body has a cross sectional area of 3318 mm^2. Running 48mm throttle bodies (x4) would be a cross sectional area of 7238 mm^2, so more than double. This would be a rough equivalent of running a single 96mm throttle body, which is bigger than most muscle cars (the Hellcat is 92mm).
Obviously the intake pipes reduce the potential diameter, but it means there is plenty of size to these ITBs for big power numbers.
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Last edited by Irace86.2.0; 11-30-2018 at 07:17 PM. Reason: added rough for clarity |
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