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Thread: Ways to enhance silence & economy on carb cars?

  1. #26
    SEi User turabaka's Avatar
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    Re: Ways to enhance silence & economy on carb cars?

    Quote Originally Posted by Vanilla Sky View Post
    That's more noise than a lot of people want with a daily driven car.
    wow really? Do they just want the car to whisper or something? I mean it's really not that loud.
    Lostforawhile:we have to pick on him he's CAH he spray painted himself into this corner with the accord.



  2. #27

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    Re: Ways to enhance silence & economy on carb cars?

    Have you driven a new car lately? I can't hear our Saturn unless the cooling fan kicks on.

  3. #28
    SEi User turabaka's Avatar
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    Re: Ways to enhance silence & economy on carb cars?

    Quote Originally Posted by Vanilla Sky View Post
    Have you driven a new car lately? I can't hear our Saturn unless the cooling fan kicks on.
    Yeah. I've driven my parents Jeep, and I can't even tell it's on unless I floor the throttle. I absolutely hate not being able to hear the motor. It makes driving more difficult IMO
    Lostforawhile:we have to pick on him he's CAH he spray painted himself into this corner with the accord.

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    Re: Ways to enhance silence & economy on carb cars?

    Quote Originally Posted by Vanilla Sky View Post
    Where are you located? Any state that has an emissions check will likely not pass you if you have a non-stock carburetor.
    I live in Columbus, OH; we have no emissions test. If I were to move, though, does historical vehicle registration exempt you from emissions testing? Also, can't the Weber carb be tuned to pass the test?

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    Re: Ways to enhance silence & economy on carb cars?

    No, to play to the letter of the law, the carburetor is an emissions control device, and tampering with it is a federal offense.

    You can get it to run every bit as clean as the stock unit, but part of most inspections is a visual. No stock carb, no pass.

  6. #31
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    Re: Ways to enhance silence & economy on carb cars?

    Quote Originally Posted by herrgolf View Post
    -40 MPG from these cars is a lie. I got about 45 in my Golf TDI. 24-29 MPG is the norm.
    I regularly get 32mpg city, and almost every trip get damn close to 50mpg highway. Don't hate because you over-payed on a diesel. These cars were rated for (and got) like 24/28 back when they were new, but changes in gasoline technology over 21-24 years has helped a buttload in making these cars some of the best commuters around.

  7. #32
    LXi User ecogabriel's Avatar
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    Re: Ways to enhance silence & economy on carb cars?

    Quote Originally Posted by herrgolf View Post
    I live in Columbus, OH; we have no emissions test. If I were to move, though, does historical vehicle registration exempt you from emissions testing? Also, can't the Weber carb be tuned to pass the test?
    I believe it depends on the state or location where you are moving. I lived in the Midwest in a small university town and no emissions in that town but yes in the state capital.
    Here in GA my Accord has taken its last emission test; it will be exempted starting next year. Every time i take my clunkers to the smog test they inspect it under the hood but it is just a glance not a through inspection.
    If it ain't broke... I fix it!

  8. #33
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    Re: Ways to enhance silence & economy on carb cars?

    Quote Originally Posted by Charlie View Post
    I regularly get 32mpg city, and almost every trip get damn close to 50mpg highway. Don't hate because you over-payed on a diesel. These cars were rated for (and got) like 24/28 back when they were new, but changes in gasoline technology over 21-24 years has helped a buttload in making these cars some of the best commuters around.
    This is just not true, unless we're talking imperial gallons. Changes in gasoline over the past 25 years haven't turned it into a new substance.

  9. #34
    3Geez Veteran lostforawhile's Avatar
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    Re: Ways to enhance silence & economy on carb cars?

    Quote Originally Posted by herrgolf View Post
    This is just not true, unless we're talking imperial gallons. Changes in gasoline over the past 25 years haven't turned it into a new substance.
    why do you argue with people who have owned these cars for years? if you want us to help you, listen to the people on here, and don't go accusing them of lying. this is the best site on the web for these cars, the dealers don't know anything about them today, but people here can tell you every nut and bolt on the car, any of the years, any of the models. the collective knowledge on these cars is unmatched anywhere

  10. #35
    2.0Si User cubert's Avatar
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    Re: Ways to enhance silence & economy on carb cars?

    Quote Originally Posted by lostforawhile View Post
    why do you argue with people who have owned these cars for years? if you want us to help you, listen to the people on here, and don't go accusing them of lying. this is the best site on the web for these cars, the dealers don't know anything about them today, but people here can tell you every nut and bolt on the car, any of the years, any of the models. the collective knowledge on these cars is unmatched anywhere

    Because 50mpg in a carbed 3g is a ridiculous claim.

    He asked how to make his car quieter, and you give him a dipshit answer of "my lincoln is quiet, the 3g has a nice sounding engine.", and smartass youtube links. Yea, thats super helpful in answering his questions.






    But no, youre right, he should be ecstatic with the response hes gotten from some folks...

  11. #36
    3Geez Veteran lostforawhile's Avatar
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    Re: Ways to enhance silence & economy on carb cars?

    Quote Originally Posted by cubert View Post
    Because 50mpg in a carbed 3g is a ridiculous claim.

    He asked how to make his car quieter, and you give him a dipshit answer of "my lincoln is quiet, the 3g has a nice sounding engine.", and smartass youtube links. Yea, thats super helpful in answering his questions.






    But no, youre right, he should be ecstatic with the response hes gotten from some folks...
    actually I did try to help him, but he wants to argue with everyone, I just made a point that this isn't supposed to be a super quiet car, it's not that noisy compared to a lot of other cars of it's time, this is a very smooth engine, most four cylinder engines from the US automakers were very buzzy in these same years.

  12. #37
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    Re: Ways to enhance silence & economy on carb cars?

    Quote Originally Posted by cubert View Post
    Because 50mpg in a carbed 3g is a ridiculous claim.

    He asked how to make his car quieter, and you give him a dipshit answer of "my lincoln is quiet, the 3g has a nice sounding engine.", and smartass youtube links. Yea, thats super helpful in answering his questions.






    But no, you're right, he should be ecstatic with the response hes gotten from some folks...
    He did get an answer. The answer is to Dynamat the shit out of the interior. The carb isn't going to make a big difference on sound no matter which airbox you put on it. The only difference I noticed with the Weber was that slight sucking of air noise, and I only heard that when I was listening for it.
    Lostforawhile:we have to pick on him he's CAH he spray painted himself into this corner with the accord.

  13. #38
    3Geez Veteran lostforawhile's Avatar
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    Re: Ways to enhance silence & economy on carb cars?

    Quote Originally Posted by turabaka View Post
    He did get an answer. The answer is to dynamat the shit out of the interior. The carb isn't going to make a big difference on sound no matter which airbox you put on it.
    he's going to weigh it down a lot, dynamat is mostly lead, so it's very heavy.

  14. #39
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    Re: Ways to enhance silence & economy on carb cars?

    Quote Originally Posted by lostforawhile View Post
    he's going to weigh it down a lot, dynamat is mostly lead, so it's very heavy.
    Yeah, but that's pretty much the only way to make these cars quieter. The carbs on them aren't that loud, and the motors aren't either. They just don't have very much sound deadening in them from the factory.

    The only reason my bike carbs are loud is because they're pointed right at the firewall. Otherwise I imagine they'd be a lot quieter.
    Lostforawhile:we have to pick on him he's CAH he spray painted himself into this corner with the accord.

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    Re: Ways to enhance silence & economy on carb cars?

    this is another solution but it's very expensive http://www.summitracing.com/parts/LIZ-50100/

  16. #41
    3Geez Veteran lostforawhile's Avatar
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    Re: Ways to enhance silence & economy on carb cars?

    Quote Originally Posted by turabaka View Post
    Yeah, but that's pretty much the only way to make these cars quieter. The carbs on them aren't that loud, and the motors aren't either. They just don't have very much sound deadening in them from the factory.

    The only reason my bike carbs are loud is because they're pointed right at the firewall. Otherwise I imagine they'd be a lot quieter.
    My carbs also are aimed right at the firewall, I'm trying to remove that nasty old insulation from up under the dashboard so I can hear them better. besides after 25 years, that stuff smells horrible.

  17. #42
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    Re: Ways to enhance silence & economy on carb cars?

    Quote Originally Posted by lostforawhile View Post
    My carbs also are aimed right at the firewall, I'm trying to remove that nasty old insulation from up under the dashboard so I can hear them better. besides after 25 years, that stuff smells horrible.
    Agreed. I ripped out quite a bit of that insulation. I should probably go through, and rip the rest of it out too. I love the sound of quad carbs.
    Lostforawhile:we have to pick on him he's CAH he spray painted himself into this corner with the accord.

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    Re: Ways to enhance silence & economy on carb cars?

    Guys, please stop arguing. There's no need. No formal warning this time, but I want this to stop now.

    The OP was pointing out that 50 MPG is pretty much not going to happen without hypermiling. Now, I can see that kind of economy with some serious hypermiling. Hell, my mom's 2007 Honda Oddy got 40 MPG on one tank. That was very much downhill, but it happened. Is that a normal tank? No.

    If you guys want to talk about insulation and sound deadening, please make your own thread for it.

  19. #44
    3Geez Veteran lostforawhile's Avatar
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    Re: Ways to enhance silence & economy on carb cars?

    Quote Originally Posted by Vanilla Sky View Post
    Guys, please stop arguing. There's no need. No formal warning this time, but I want this to stop now.

    The OP was pointing out that 50 MPG is pretty much not going to happen without hypermiling. Now, I can see that kind of economy with some serious hypermiling. Hell, my mom's 2007 Honda Oddy got 40 MPG on one tank. That was very much downhill, but it happened. Is that a normal tank? No.

    If you guys want to talk about insulation and sound deadening, please make your own thread for it.
    well thats what he wants to do, the lizard skin sprays on, and kills noise and heat both. if he wants it quiet,thats probably his best option as far as sound deadening thats not going to weigh a ton. you can even take off and spray the bottom of the hood

  20. #45
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    Re: Ways to enhance silence & economy on carb cars?

    Quote Originally Posted by herrgolf View Post
    This is just not true, unless we're talking imperial gallons. Changes in gasoline over the past 25 years haven't turned it into a new substance.
    That is seriously the most ignorant thing you could have said. 25 years later gasoline can't even be compared to what it was back then. Did Shell have nitrogen-enriched gasoline that "cleans your engine" 25 years ago? Did Chevron have Techron 25 years ago? It's called technological development. And no, I'm talking about regular American gallons.

    Now, as for the loudness and simplifying of the carb: If you're in the states, which I'm guessing you are since you mentioned emissions, then you can probably take off the emissions stuff without seeing any real difference (I've gone over this with another member before), per your state allowing it. Is your car abnormally loud or something? Do you have a video?

  21. #46
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    Re: Ways to enhance silence & economy on carb cars?

    i agree gasoline is much more refined today than it was decades ago. there are a lot more additives in fuel now that replaced things like MTBE (more recently phased out) and lead back in the 70's. Basically we only use the C6-C12 hydrocarbon chains, everything is blended to give an average of a C8 hydrocarbon chain. Many people often do not know that gasoline is not a "pure distilled" liquid, its a mixture of hexane, heptane, octane, [M,P,O]-xylene, toluene, ethanol, methanol just to name a few components. Search for Gas chromatographic mass spectral data and it should list more components. All and all the best way to get the better gas mileage is to open up some of the ports on the carb (at least im familiar with this method on 70's and 80's Rochester carbs, i do not know if this would apply to the Honda carbs). As sokme other members mentioned sometimes removing some select items from the emission system will help. I would rebuild and clean the whole carb and set the needle/jet a bit lean but not too lean and adjust the timing.

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    Re: Ways to enhance silence & economy on carb cars?

    He hasn't purchased the car yet, he's asking questions in order to make a more informed decision.

    The issue he was describing was likely caused by a high idle, worn motor mounts, and a leaky exhaust. I've experienced the same issues he has, and a new exhaust and going through the vacuum system and replacing one of the thermovalves fixed the problem.

    I think this thread has run its course. Herrgolf, if you have any more questions, feel free to start a new thread or ship off a PM to me personally and I'll answer your questions the best I can.

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