Dual Charged?


Fudge_Brownie

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Already done with nitrous and boost :)

yes you can acheive some of the same short term effects. but as mentioned above it's a special purpose endurance solution to some of the drawbacks of turbocharging (lag, spool). for the consumer purposed car yes ostensibly a single large turbo is cheapest and simplest.

if it deserves serious discussion, then all the alternatives should be considered.

the 1993 twin turbo toyota supra had just such a setup a small fast spool, then swtiched over to a larger turbo.

predictably, someone replaced it with a single large turbo, which netted a modest improvement.

the setup was the 'improved' by utilizing a setup similar to the Volvo T6 but with two larger turbos. unfortunately the fact that the engines split exhaust airflow couldn't support the larger turbos doomed the project.

clearly one must consider more factors than merely "lets stick bigger turbos" on to succeed where others fail.

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because it was the best overall performance, or the best legal one? some types of power adders are against the rules.

if you have any info on twin charged rally audis i'd love to see it .. never heard of them

and dude what the FOCK are you talking about the supras

The MKIV Supra's twin turbos operated in sequential mode instead of the more common parallel mode. The sequential setup featured a pair of small, equally sized turbos, with ceramic blades for the domestic Japanese market and steel blades for export (USA, Europe) markets. At first, all of the exhaust is routed to the first turbine for reduced lag. This resulted in boost and enhanced torque as early as 1800 rpm. Approaching 4000 rpm, the exhaust is routed to the second turbine for a "pre-boost" mode, although none of the compressor output is used by the engine at this point. Approaching 4500 rpm, the second turbo's output is added to the intake air, and both turbos operate in parallel. Most cars which are advertised as "twin turbo" operate by having the two equally sized turbos constantly running in parallel; the turbos spool up at the same time. The sequential mode provides greater low-end response at the expense of increased complexity and cost.

the turbos wer ethe same size not a small and large

after trying to state something like that i lose almost all ability to trust anything you say unless you can back it up

bud of mine owned a 500whp supra ... upgraded the stockers and lots of cam and exhaust

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That red car is a work of beauty!

So people are saying bigger turbo? what about a bigger turbo AND an SC?

The what-if game is fun, and just to make things clear, this is just for some fun hypothetical discussion, i've got no money :-(

Now how does that red car prevent boost from the SC going back into the TC? Does the SC "breathe" through the turbo?

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if you have any info on twin charged rally audis i'd love to see it .. never heard of them

and dude what the FOCK are you talking about the supras

the turbos wer ethe same size not a small and large

after trying to state something like that i lose almost all ability to trust anything you say unless you can back it up

bud of mine owned a 500whp supra ... upgraded the stockers and lots of cam and exhaust

my siting is paper, and i don't want to type it in as it's 2:30am, but i took your astonishment to heart and i did reread several times and found i had read into it that they were different sizes. clearly upon rereading it, and looking at the picture, it would substantiate your correction that they indeed were the same size. i'm sorry, it's way late for me :) thanks for the correction. this makes me think about it in a much different fashion. i need to go to bed hours ago... for the last 2 weeks.

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That is one piece of beautiful fabrication!

But why cant they engineer the correct length front dampners? Kind of ruins the whole thing :angry:

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my siting is paper, and i don't want to type it in as it's 2:30am, but i took your astonishment to heart and i did reread several times and found i had read into it that they were different sizes. clearly upon rereading it, and looking at the picture, it would substantiate your correction that they indeed were the same size. i'm sorry, it's way late for me :) thanks for the correction. this makes me think about it in a much different fashion. i need to go to bed hours ago... for the last 2 weeks.

works for me ... i typically have attitude bout everything s odo not take it to much to heart .... its just .. i thought everyone knew that they were both the same size

the way they work might lead one to think it is a smaller turbo feeding a larger .. but you do not see that to often on a stock car

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I don't know, get the right turbo and your spool issues won't be too bad. Not to mention. There are plenty of cars that make good all around power with just one big turbo. Like was said before.

I think it would be interesting in the (what if) department, but alot of work, and not really worth it IMO.

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That is one piece of beautiful fabrication!

But why cant they engineer the correct length front dampners? Kind of ruins the whole thing :angry:

actually i thought that was most interesting aspect thing about it; the dampeners popping through the hood.

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