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Location:
Perth
Registered:
September 2003
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Re: 20V turbo question
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Thu, 04 December 2003 02:56
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Nissan's MA09 is a twin charger engine.
it's a tiny little 800odd cc four cyl with a supercharger and turbocharger.
it's overly complicated for the type of power delivery they were aiming for, nothing a correctly sized s/c wouldn't fix anyways.
steer clear of setting up a s/c and turbo at once, it's too much effort for little to no gain - a correctly sized ball bearing turbo will be simpler, cheaper, more powerful and saner.
a lot of people say twins on a four cyl don't work, but i beg to differ. it's exactly the same as turbocharging a 2cyl engine twice-over - similar to a twin turbo V8 setup - and that sure as hell works.
just remember to set the exhaust manifolds up in accordance with your firing order - not just cyl 1+2 to turbo one and cyl 3+4 to turbo two. this works fine with a 6cyl, because there aremore exhaust pulses to keep an even turbine speed. if your firing order is for example 1-3-4-2 then one manifold would run from 1+4 to one turbo and from 2+3 to the other - otherwise the exhaust pulses will be all over the shop and they will boost inconsistantly. the manifold will need to have equal length runners too, so you can imagine the spaghetti look that ensues trying to keep the 2+3 lengths the same as the 1+4 lengths!
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| | Subject | Poster | Date |
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20V turbo question
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CheeseCake_Bandit | Tue, 02 December 2003 16:12 |
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Re: 20V turbo question
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Esteban | Thu, 04 December 2003 02:28 |
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Re: 20V turbo question
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onejayzed | Thu, 04 December 2003 02:56 |
