Move over LSX new motor to be in c7 ?
09-30-2010, 02:02 PM
#11
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I think a direct injected 5.5L engine that has nearly the same output as a traditional fuel injected 6.2L speaks for itself.....
With DI, you get cooler intake charge and higher compression ratio--more efficient combustion. That's the biggest advantage I can think of. What I can't figure out is why it took so long to do this... What hurdles do you run into?
It will most likely still be a "LSX" as far as the lay-person is concerned. It will just be Gen V engine. Gen III => Gen IV => Gen V. Get it?
With DI, you get cooler intake charge and higher compression ratio--more efficient combustion. That's the biggest advantage I can think of. What I can't figure out is why it took so long to do this... What hurdles do you run into?
It will most likely still be a "LSX" as far as the lay-person is concerned. It will just be Gen V engine. Gen III => Gen IV => Gen V. Get it?
09-30-2010, 06:21 PM
#13
I think a direct injected 5.5L engine that has nearly the same output as a traditional fuel injected 6.2L speaks for itself.....
With DI, you get cooler intake charge and higher compression ratio--more efficient combustion. That's the biggest advantage I can think of. What I can't figure out is why it took so long to do this... What hurdles do you run into?
It will most likely still be a "LSX" as far as the lay-person is concerned. It will just be Gen V engine. Gen III => Gen IV => Gen V. Get it?
With DI, you get cooler intake charge and higher compression ratio--more efficient combustion. That's the biggest advantage I can think of. What I can't figure out is why it took so long to do this... What hurdles do you run into?
It will most likely still be a "LSX" as far as the lay-person is concerned. It will just be Gen V engine. Gen III => Gen IV => Gen V. Get it?
FWIW, the new 3.6L v6 in the camaro/cts is direct injected, 306hp 30mpg in a 4000 pig. Now extrapolate that technology into something with 2 more cylinders, heads that are somewhat performance oriented and, you get the picture, 440 out of a 5.5L isn't that tough at all, IMO.
09-30-2010, 10:04 PM
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Direct injection requires higher fuel pressure than conventional fuel-injected engines, and the engine-driven high-pressure fuel pump is used to supply up to 1,740 psi (120 bar) of pressure. The system regulates lower fuel pressure at idle—approximately 508 psi (35 bar) and higher pressure at wide-open throttle. The exhaust cam-driven high-pressure pump works in conjunction with a conventional fuel tank-mounted supply pump
they are saying this motor will remain a pushrod motor so im curious to see what they use to drive the fuel pump . probably the oil similar to diesel.
tuning may get fun . imagine not only the spark timing but also injector timing. got a new bogey.
they are saying this motor will remain a pushrod motor so im curious to see what they use to drive the fuel pump . probably the oil similar to diesel.
tuning may get fun . imagine not only the spark timing but also injector timing. got a new bogey.
09-30-2010, 10:04 PM
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Direct injection requires higher fuel pressure than conventional fuel-injected engines, and the engine-driven high-pressure fuel pump is used to supply up to 1,740 psi (120 bar) of pressure. The system regulates lower fuel pressure at idle—approximately 508 psi (35 bar) and higher pressure at wide-open throttle. The exhaust cam-driven high-pressure pump works in conjunction with a conventional fuel tank-mounted supply pump
they are saying this motor will remain a pushrod motor so im curious to see what they use to drive the fuel pump . probably the oil similar to diesel.
tuning may get fun . imagine not only the spark timing but also injector timing. got a new bogey.
they are saying this motor will remain a pushrod motor so im curious to see what they use to drive the fuel pump . probably the oil similar to diesel.
tuning may get fun . imagine not only the spark timing but also injector timing. got a new bogey.
09-30-2010, 11:50 PM
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I'm looking forward to the new Gen V V8 from GM. I like the fact they're keeping the pushrod design. The slight horsepower increase from the LS3 and new CAFE standards is probably an indication we're seeing the peak of naturally aspirated horsepower NOW. I guarantee we'll never see a big GM V8 (like the LS7) ever again. Regardless, it's cool to see a power increase from a smaller engine. Direct injection and a "new cylinder" design are probably the main reasons. I have a feeling this engine will only be available in the Corvette, new GM trucks, and MAYBE the 6th gen Camaro.
10-01-2010, 11:16 AM
#20
I saw this a little while back, looks promising for sure and is gonna be tuning heaven for the tuners and compression guru's.
Also one of the problems they had to overcome from what I understand is the gas would eat up the high pressure fuel pumps really quickly as opposed to the diesels which self-lubricates the pumps. All this high pressure injection is gonna be fun to deal with!
Oh yeah and that C7 rendering is hideous!
Also one of the problems they had to overcome from what I understand is the gas would eat up the high pressure fuel pumps really quickly as opposed to the diesels which self-lubricates the pumps. All this high pressure injection is gonna be fun to deal with!
Oh yeah and that C7 rendering is hideous!