Renisis with a carb?
06-01-05, 06:49 PM
#1
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Renisis with a carb?
I just might be able to get my hands one a Renisis core. I work for a Mazda dealer and they have a Renisis core that has been sitting for half a year in a core box. Mazda has not called for it so the parts manager asked me if I wanted it. HELL YA. But I have to wait another 6 months to make sure Mazda doesnt call for it. Supposedly it ran fine. They said they were having a problem with lean codes no matter what they did to the car so they swapped motors.
Now. Fabbing intake and exhaust manifolds wont be too much of a problem. What size carb tho.............
Now. Fabbing intake and exhaust manifolds wont be too much of a problem. What size carb tho.............
06-01-05, 07:22 PM
#5
Originally Posted by GUITARJUNKIE28
naw, use a t2 tranny. the rx8 trannies (although the 6-speed is cool) are pretty fragile.
maybe just use a microtech and aftermarket throttle body.
maybe just use a microtech and aftermarket throttle body.
That store is so awesome, I wish I've known it sooner.
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06-01-05, 11:16 PM
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Werd. I have to get the engine first. I definately want to carb it.
I know all about the 6 speed.....garbage. Got one torn apart at work because of 6th gear shattering. No reason.
I know all about the 6 speed.....garbage. Got one torn apart at work because of 6th gear shattering. No reason.
06-01-05, 11:26 PM
#10
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Anex......75 bucks for the throttle body......sweet. But by the time I gather everything for it to work, I would be dead. I have a short attention span, no paitence and a very tight pocket.
What clutch to go with the T2 and mate to the Renisis?
We had a 2nd gen non turbo manual transmission come through the shop that had cought on fire. They wanted 300 for it and if it will work.....................
What clutch to go with the T2 and mate to the Renisis?
We had a 2nd gen non turbo manual transmission come through the shop that had cought on fire. They wanted 300 for it and if it will work.....................
06-01-05, 11:29 PM
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Originally Posted by rxseven07
hella is a west coast word meaning very, or alot.
why do something to be hella cool?
all major auto manufacturers have switched from carbs to efi for a reason...
06-02-05, 12:10 AM
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Whatever you do, please do not put a Holley on it.
I think a Weber 51 IDA or a Sterling carb would be pretty kick *** on a Renisis. I wonder how much power you could gain over stock EFI with going to a big carb and exhaust system....
I think a Weber 51 IDA or a Sterling carb would be pretty kick *** on a Renisis. I wonder how much power you could gain over stock EFI with going to a big carb and exhaust system....
06-02-05, 12:17 AM
#15
I hate it when people say "all major auto manufacturers have switched from carbs to efi for a reason..." as a justification to people as what they should use in their car.
There are two reasons:
1. EMISSIONS: the governments of the world have cracked down on emissions, and EFI produces much lower emissions than carb, even when it's just roughly programmed
2. Better fuel mileage: Higher pump prices push companies to make gas mileage better for many cars. Don't start the SUV debate, I blame the US for that. But cars like the toyota echo, and the hybrid vehicles are appearing everywhere. EFI gives better gas mileage.
Does either of that matter to me? no.
Can EFI give more power? Yes. But with the cost, and the complexity of the system setup AND the tuning of it, it's not always worth it. For good performance you want a *quality* efi system.
For less than $600 I can get a carb and everything I need to tune it (jets, accurate fuel gauge etc...). It might kill more trees, and burn more gas, and it might not be AS accurate and "programmable" as a good EFI system, but it can make comparable power for much less cost.
And they're much simpler mechanical devices. Nope, no computers for me!
I'd carb a Renesis. People would cry foul, but I think it would rock.
Jon
There are two reasons:
1. EMISSIONS: the governments of the world have cracked down on emissions, and EFI produces much lower emissions than carb, even when it's just roughly programmed
2. Better fuel mileage: Higher pump prices push companies to make gas mileage better for many cars. Don't start the SUV debate, I blame the US for that. But cars like the toyota echo, and the hybrid vehicles are appearing everywhere. EFI gives better gas mileage.
Does either of that matter to me? no.
Can EFI give more power? Yes. But with the cost, and the complexity of the system setup AND the tuning of it, it's not always worth it. For good performance you want a *quality* efi system.
For less than $600 I can get a carb and everything I need to tune it (jets, accurate fuel gauge etc...). It might kill more trees, and burn more gas, and it might not be AS accurate and "programmable" as a good EFI system, but it can make comparable power for much less cost.
And they're much simpler mechanical devices. Nope, no computers for me!
I'd carb a Renesis. People would cry foul, but I think it would rock.
Jon
06-02-05, 12:29 AM
#16
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Originally Posted by vipernicus42
I hate it when people say "all major auto manufacturers have switched from carbs to efi for a reason..." as a justification to people as what they should use in their car.
There are two reasons:
1. EMISSIONS: the governments of the world have cracked down on emissions, and EFI produces much lower emissions than carb, even when it's just roughly programmed
2. Better fuel mileage: Higher pump prices push companies to make gas mileage better for many cars. Don't start the SUV debate, I blame the US for that. But cars like the toyota echo, and the hybrid vehicles are appearing everywhere. EFI gives better gas mileage.
Does either of that matter to me? no.
Can EFI give more power? Yes. But with the cost, and the complexity of the system setup AND the tuning of it, it's not always worth it. For good performance you want a *quality* efi system.
For less than $600 I can get a carb and everything I need to tune it (jets, accurate fuel gauge etc...). It might kill more trees, and burn more gas, and it might not be AS accurate and "programmable" as a good EFI system, but it can make comparable power for much less cost.
And they're much simpler mechanical devices. Nope, no computers for me!
I'd carb a Renesis. People would cry foul, but I think it would rock.
Jon
There are two reasons:
1. EMISSIONS: the governments of the world have cracked down on emissions, and EFI produces much lower emissions than carb, even when it's just roughly programmed
2. Better fuel mileage: Higher pump prices push companies to make gas mileage better for many cars. Don't start the SUV debate, I blame the US for that. But cars like the toyota echo, and the hybrid vehicles are appearing everywhere. EFI gives better gas mileage.
Does either of that matter to me? no.
Can EFI give more power? Yes. But with the cost, and the complexity of the system setup AND the tuning of it, it's not always worth it. For good performance you want a *quality* efi system.
For less than $600 I can get a carb and everything I need to tune it (jets, accurate fuel gauge etc...). It might kill more trees, and burn more gas, and it might not be AS accurate and "programmable" as a good EFI system, but it can make comparable power for much less cost.
And they're much simpler mechanical devices. Nope, no computers for me!
I'd carb a Renesis. People would cry foul, but I think it would rock.
Jon
And all other smilies that agree with the above post.
06-02-05, 12:59 AM
#19
FD > FB > FC
Originally Posted by FB II
lol... i say go..... H O L L E Y muhuhuhahahahaaaaaaaa!!!!! either way, carb that sucka! totally hella awesome!
...................................weber>holley
06-02-05, 02:34 AM
#20
Junior Member
Originally Posted by 9d7gst
Anex......75 bucks for the throttle body......sweet.
06-02-05, 07:37 AM
#21
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You've got to be Fing kidding me!
Originally Posted by vipernicus42
I hate it when people say "all major auto manufacturers have switched from carbs to efi for a reason..." as a justification to people as what they should use in their car.
There are two reasons:
1. EMISSIONS: the governments of the world have cracked down on emissions, and EFI produces much lower emissions than carb, even when it's just roughly programmed
2. Better fuel mileage: Higher pump prices push companies to make gas mileage better for many cars. Don't start the SUV debate, I blame the US for that. But cars like the toyota echo, and the hybrid vehicles are appearing everywhere. EFI gives better gas mileage.
Does either of that matter to me? no.
Can EFI give more power? Yes. But with the cost, and the complexity of the system setup AND the tuning of it, it's not always worth it. For good performance you want a *quality* efi system.
For less than $600 I can get a carb and everything I need to tune it (jets, accurate fuel gauge etc...). It might kill more trees, and burn more gas, and it might not be AS accurate and "programmable" as a good EFI system, but it can make comparable power for much less cost.
And they're much simpler mechanical devices. Nope, no computers for me!
I'd carb a Renesis. People would cry foul, but I think it would rock.
Jon
There are two reasons:
1. EMISSIONS: the governments of the world have cracked down on emissions, and EFI produces much lower emissions than carb, even when it's just roughly programmed
2. Better fuel mileage: Higher pump prices push companies to make gas mileage better for many cars. Don't start the SUV debate, I blame the US for that. But cars like the toyota echo, and the hybrid vehicles are appearing everywhere. EFI gives better gas mileage.
Does either of that matter to me? no.
Can EFI give more power? Yes. But with the cost, and the complexity of the system setup AND the tuning of it, it's not always worth it. For good performance you want a *quality* efi system.
For less than $600 I can get a carb and everything I need to tune it (jets, accurate fuel gauge etc...). It might kill more trees, and burn more gas, and it might not be AS accurate and "programmable" as a good EFI system, but it can make comparable power for much less cost.
And they're much simpler mechanical devices. Nope, no computers for me!
I'd carb a Renesis. People would cry foul, but I think it would rock.
Jon
Anyone?
Bueller?
Because it offers a significant performance advantage!
Aside from the better control of air/fuel ratio, the real advantage to FI is the elimination of restrictions. By virtue of their function, and Mr. Bernuli's principle, the venturies in a carb restrict airflow. So, for a given throttle plate area, a carb will always flow worse than an FI system at the same level of technology (materials, porting, etc.)
Beyond that, carbs force the intake manifold to be "wet." That is to say, both air and fuel travel through the manifold together. Since the fuel remains in liquid form for the most part, the fact that it has to travel a longer distance in the manifold means that some of it will "drop out" and run down the manifold, and the rest of it will not be nearly as finely atomized as if it were injected near the intake port.
Atomization is key, as it is only the outside surface of the fuel droplet that reacts with the air and burns. Bigger drops mean slower burn, and also less complete burn, as the burning of the outside layer starves the immediately surrounding area of the required oxygen, ending combustion prematurely.
Finally, a side benefit of computer control, which is not necessary for fuel injection, is the ability of the system to predict the required fuel. Sampling several times a second allows the ECU to "know" the rate of change of throttle position, and add more fuel as the motor needs it. A carb is reactive, and must wait for the change in airflow before it can change the fueling. Fractions of a second, but important nonetheless.
Don't think I am flaming, or whatever. Carbs are definitely sweet. 3 dueces on a flatty, two 4's on a 6-71, or a cross ram on a Z-28 are all wicked combos, but FI offers some key advantages that carbs can not match, by virtue of their design. And, frankly, $600 is more than plenty to get FI on a rex.
06-02-05, 08:05 AM
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Originally Posted by Feds
If the only reasons for FI where mileage and emissions, why did the 300SL use it in 1954? Same with the Corvette's and shoe box Chevys of the same period?
Anyone?
Bueller?
Because it offers a significant performance advantage!
Aside from the better control of air/fuel ratio, the real advantage to FI is the elimination of restrictions. By virtue of their function, and Mr. Bernuli's principle, the venturies in a carb restrict airflow. So, for a given throttle plate area, a carb will always flow worse than an FI system at the same level of technology (materials, porting, etc.)
Beyond that, carbs force the intake manifold to be "wet." That is to say, both air and fuel travel through the manifold together. Since the fuel remains in liquid form for the most part, the fact that it has to travel a longer distance in the manifold means that some of it will "drop out" and run down the manifold, and the rest of it will not be nearly as finely atomized as if it were injected near the intake port.
Atomization is key, as it is only the outside surface of the fuel droplet that reacts with the air and burns. Bigger drops mean slower burn, and also less complete burn, as the burning of the outside layer starves the immediately surrounding area of the required oxygen, ending combustion prematurely.
Finally, a side benefit of computer control, which is not necessary for fuel injection, is the ability of the system to predict the required fuel. Sampling several times a second allows the ECU to "know" the rate of change of throttle position, and add more fuel as the motor needs it. A carb is reactive, and must wait for the change in airflow before it can change the fueling. Fractions of a second, but important nonetheless.
Don't think I am flaming, or whatever. Carbs are definitely sweet. 3 dueces on a flatty, two 4's on a 6-71, or a cross ram on a Z-28 are all wicked combos, but FI offers some key advantages that carbs can not match, by virtue of their design. And, frankly, $600 is more than plenty to get FI on a rex.
Anyone?
Bueller?
Because it offers a significant performance advantage!
Aside from the better control of air/fuel ratio, the real advantage to FI is the elimination of restrictions. By virtue of their function, and Mr. Bernuli's principle, the venturies in a carb restrict airflow. So, for a given throttle plate area, a carb will always flow worse than an FI system at the same level of technology (materials, porting, etc.)
Beyond that, carbs force the intake manifold to be "wet." That is to say, both air and fuel travel through the manifold together. Since the fuel remains in liquid form for the most part, the fact that it has to travel a longer distance in the manifold means that some of it will "drop out" and run down the manifold, and the rest of it will not be nearly as finely atomized as if it were injected near the intake port.
Atomization is key, as it is only the outside surface of the fuel droplet that reacts with the air and burns. Bigger drops mean slower burn, and also less complete burn, as the burning of the outside layer starves the immediately surrounding area of the required oxygen, ending combustion prematurely.
Finally, a side benefit of computer control, which is not necessary for fuel injection, is the ability of the system to predict the required fuel. Sampling several times a second allows the ECU to "know" the rate of change of throttle position, and add more fuel as the motor needs it. A carb is reactive, and must wait for the change in airflow before it can change the fueling. Fractions of a second, but important nonetheless.
Don't think I am flaming, or whatever. Carbs are definitely sweet. 3 dueces on a flatty, two 4's on a 6-71, or a cross ram on a Z-28 are all wicked combos, but FI offers some key advantages that carbs can not match, by virtue of their design. And, frankly, $600 is more than plenty to get FI on a rex.
06-02-05, 12:54 PM
#25
Bimmer *****
Originally Posted by clean85owner
Whatever you do, please do not put a Holley on it.
I think a Weber 51 IDA or a Sterling carb would be pretty kick *** on a Renisis. I wonder how much power you could gain over stock EFI with going to a big carb and exhaust system....
I think a Weber 51 IDA or a Sterling carb would be pretty kick *** on a Renisis. I wonder how much power you could gain over stock EFI with going to a big carb and exhaust system....