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Old 02-28-2012, 02:01 PM   #21
GT/CS_2011
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twin turbos AND sc plus staged juice....what could be more fun than that????
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Old 02-28-2012, 03:50 PM   #22
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twin turbos AND sc plus staged juice....what could be more fun than that????
Methanol
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Old 02-28-2012, 05:07 PM   #23
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Maybe not 2 s/c's
But how about twelve super chargers?!?!?
http://www.hotrod.com/techarticles/e...linder_engine/
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Old 02-28-2012, 05:50 PM   #24
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Methanol
i like the way u think
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Old 02-28-2012, 11:58 PM   #25
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You will always have the turbo vs supercharger questions but what I always laugh at is that top fuel and funny car are always brought up by the supercharger guys. Top fuel and funnycar run super chargers because that's what is mandated by the rules. NHRA banned turbos a long time ago, mainly because turbos don't put on the show that a supercharged engine does. What spectator wants to watch a top fuel car go down the track almost quietly, no huge flames from the exhaust stacks.


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Old 02-29-2012, 07:26 AM   #26
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Methanol
What would be the advantage to Methanol?
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Old 02-29-2012, 07:28 AM   #27
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Methanol

We went to methanol to get the IATs down and it worked, but adding methanol to the mix, means just one more thing that can go wrong. We had to change to a JPC racing intake manifold because the stocker couldn't handle the mixture at 20+ lbs boost.

Mixing and adding all these power adders is fun on an internet forum, but makes the build exponentially and unneccesarily more complicated.
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Old 02-29-2012, 07:57 AM   #28
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Ford says on the 5.8 it takes 100hp to drive the s/c
I wish Ford had done what BMW's doing with their turbos and put one on the GT500. Of course, BMW did patent it. Which sucks. Hopefully they'll let others use this tech because it's a huge advance.

Basically, to counteract the turbo lag problem, BMW came up with a little electric motor that spools up the turbo to the correct speed so when you hit the gas, the power is there. Boom. All the power of a turbo, none of the lag.

Further reading

Another (little more advanced) read

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Old 02-29-2012, 12:54 PM   #29
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What would be the advantage to Methanol?
The only advantages of alcohol fuels; methanol & ethanol for example, are power. They offer absolutely nothing in fuel mileage since they are much more volatile and you have to dump so much more of them into the cylinder to get the same combustive force form each ignition.

Where alcohol fuels really shine is you can dump SO much more of it into the cylinders to get even more explosive force than from a higher BTU density fuel (gasoline and diesel are higher BTU density fuels).

So, top fuel drag rails can reach well above 5000 BHP crank (even 10,000 BHP I have been rumored), but the draw back is they could literally drink over a dozen gallons of fuel in a mile? (I think this is right, maybe much less, but you will NOT even get 10 miles per gal).
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Old 02-29-2012, 12:58 PM   #30
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Quote:
Originally Posted by 4LiterSonic View Post
I wish Ford had done what BMW's doing with their turbos and put one on the GT500. Of course, BMW did patent it. Which sucks. Hopefully they'll let others use this tech because it's a huge advance.

Basically, to counteract the turbo lag problem, BMW came up with a little electric motor that spools up the turbo to the correct speed so when you hit the gas, the power is there. Boom. All the power of a turbo, none of the lag.

It is possible to counteract turbo lag without the use of such external devices added to the turbos.
Though more expensive and more complicated, compound turbos of different sizes in series or parallel do the trick.
For example, the F250+ 7.4L power strokes use a parallel turbo setup. One small turbo for off the line low power RPM, a larger turbo for higher RPM operations.

The same can be done with gasoline engines.
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