Gas Mileage Blows
12-04-01, 03:49 PM
#26
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Rotary engines typically consume more fuel than a piston engine because the thermodynamic efficiency of the engine is reduced by the long combustion-chamber shape and low compression ratio.
12-04-01, 04:22 PM
#27
40k worth of fail
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Re: around that range
Originally posted by RavenRx7
And this is for the guy that said you cant disable your turbo, APEX ---boost controler did. 300zx TT-- A mode was 8 pounds and B mode was 13 pounds or you could disable..
And this is for the guy that said you cant disable your turbo, APEX ---boost controler did. 300zx TT-- A mode was 8 pounds and B mode was 13 pounds or you could disable..
12-04-01, 05:01 PM
#28
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I'm with you on the fuel economy DK...
I've had a few cars that proved the point on that and they were all Supras. From my own experience Supra N/As and Turbos have all gotten about the same gas mileage with the same 3 liter displacement since the 1987 models came out. It's amazing that the MKIII 200 hp N/A and the 232 hp turbo got the same mileage and then the MKIV 222 hp N/A and the 320 hp TT still got the same mileage as eachother and as the generation before.
Basically if the engine doesn't have to work as hard to go the same speed it will do it more efficiently... also turbo cars generally run a slightly different air to fuel ratio compared with N/A engines.
I've had a few cars that proved the point on that and they were all Supras. From my own experience Supra N/As and Turbos have all gotten about the same gas mileage with the same 3 liter displacement since the 1987 models came out. It's amazing that the MKIII 200 hp N/A and the 232 hp turbo got the same mileage and then the MKIV 222 hp N/A and the 320 hp TT still got the same mileage as eachother and as the generation before.
Basically if the engine doesn't have to work as hard to go the same speed it will do it more efficiently... also turbo cars generally run a slightly different air to fuel ratio compared with N/A engines.
12-04-01, 10:12 PM
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Re: around that range
Originally posted by RavenRx7
ok ok im around that range of 13 and 15 mpg. If your right i work in downtown and it's stop and go all the way. I haven't got a chance to do a road trip. And this is for the guy that said you cant disable your turbo, APEX ---boost controler did. 300zx TT-- A mode was 8 pounds and B mode was 13 pounds or you could disable..
ok ok im around that range of 13 and 15 mpg. If your right i work in downtown and it's stop and go all the way. I haven't got a chance to do a road trip. And this is for the guy that said you cant disable your turbo, APEX ---boost controler did. 300zx TT-- A mode was 8 pounds and B mode was 13 pounds or you could disable..
i think the stock wastegate can only hold its lowest at ~7 pounds, even without any type of turbo control. sorry dude, i dont think its possible to simply "turn off" the turbos.
12-04-01, 10:31 PM
#30
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Re: Re: around that range
Originally posted by DK
Uh-huh ... so you're gonna drive around with a compression ratio of 8.5:1 on that Z32 with the turbos "disabled"? Uh-huh ... and this is going to improve gas mileage? OK, so you do know that the compression ratio on an NA Z32 is 10.5:1 and that generates 220 hp, right? So you're telling me you're gonna drive around on an "all-motor" 8.5:1 DOHC V6? Uh-huh ... OK.
Uh-huh ... so you're gonna drive around with a compression ratio of 8.5:1 on that Z32 with the turbos "disabled"? Uh-huh ... and this is going to improve gas mileage? OK, so you do know that the compression ratio on an NA Z32 is 10.5:1 and that generates 220 hp, right? So you're telling me you're gonna drive around on an "all-motor" 8.5:1 DOHC V6? Uh-huh ... OK.
damn...how slow will an "all-motor" (lol!) 300Z TT be?? i guess the "all-motor" (and stock) civic guys will be beating him!
im guessing that with a NA engine with an 8.5:1 ratio would get TERRIBLE gass mileage. the reason?? you would have to floor it to get anywhere.
also...how big are the stock Z32 wastegates?? they are gonna have to be pretty damn big to vent ALL the exhaust the engine spits out in order not to spin boost. in my opinion...not possible!
also, turbos make an engine more efficient. using its own power to generate more power. thats how they get better gas mileage.
12-06-01, 09:56 AM
#32
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Originally posted by 50tooslow
Well you might change your fuel filter. It made a difference for me. When I was broke a few months ago I knew I had to be careful and I got 320 miles to a tank of gas! Know I'm not worried about money and I get around 200miles. It all depends how you drive. I swear when I am running my car hard I can see the gas gauge move, maby not but I think it does
.
Well you might change your fuel filter. It made a difference for me. When I was broke a few months ago I knew I had to be careful and I got 320 miles to a tank of gas! Know I'm not worried about money and I get around 200miles. It all depends how you drive. I swear when I am running my car hard I can see the gas gauge move, maby not but I think it does
.
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