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    Thread: Switching to Bike Carbs. Heres a write up!

    1. Member vwaudipreferred's Avatar
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      07-22-2019 12:18 AM #2051
      Question for you carbíed guys.
      I have a 1.8 16v corrado I recently converted to bike carbs.
      Fz1 carbs, 170 jets, bogg bros manifold, fz1 fuel pump and a 1-4 psi fpr.
      The car runs but idles at 2200rpm.
      I canít adjust the idle at all. Even by bringing the fuel pressure down to 1psi, nothing.
      Iím at the end of my rope trying to sort this thing out.
      Any ideas?



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      @theoldnh

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    3. Member
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      07-22-2019 06:12 AM #2052
      Vacuum leak?

      What's your AFR @ idle?

      Is your throttle cable allowing the carbs to close the whole way?

      Have you cleaned and baseline adjusted the carbs?

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    4. Member vwaudipreferred's Avatar
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      07-22-2019 06:41 AM #2053
      Quote Originally Posted by YJSAABMAN View Post
      Vacuum leak?

      What's your AFR @ idle?

      Is your throttle cable allowing the carbs to close the whole way?

      Have you cleaned and baseline adjusted the carbs?

      Sent from my SAMSUNG-SM-G930A using Tapatalk
      Not sure about vacuum leaks. The only vacuum line I know of is the one from the manifold to the brake booster. That one is fine.

      No idea of the AFRís

      Throttle cable isnít connected.

      Carbs have been cleaned and balanced.


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      @theoldnh

    5. Member vwaudipreferred's Avatar
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      07-22-2019 04:56 PM #2054
      It was the float bowls. I adjusted the levels and all the issues remedied themselves.

      Thanks.


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      @theoldnh

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      08-16-2019 12:36 PM #2055
      I know this is an old post and I think Iíve read most of it. So I bought a setup of carbs, fuel pump and msd from someone who had this on their mk2.

      Iím putting it in my mk1 16v swap but holy **** this radiator and coolant neck on the head is giving me so many issues. Initially I had a civic radiator cause I saw it mention quite a bit. I didnít like they way it looked or how we had to angle it so had got one from S&P automotive. It was a tucked radiator for carb swaps and I sent it back as I would have to run an in-line fill for it and the inlet/outlet where on the passenger side and there was no room at all.





      So I sent that one back and got their mini tucked version and again didnít like it. The inlet/outlet was on the drivers side and running coolant hoses was just ugly. Had to buy these metal flexible ones and there was literally no room from the bottom of the carb to the coolant neck on the head to get a hose clamp on. Plus running the lower hose down and u see the front engine mount just looked awful





      So now Iím on radiator 4, scirocco style with and end tank and inlet/outlet on passenger side. But again the issue Iím having is with the bottom of the bike carbs and coolant neck.

      Iím assuming at this point Iím gonna have to get a new intake manifold where the carbs are angled more up or do some serious fab work to the front core support.

      This is how the carbs sit now, would it be ok to angle them more






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    7. Member vwaudipreferred's Avatar
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      08-16-2019 01:48 PM #2056
      Quote Originally Posted by 69vdub View Post
      I know this is an old post and I think Iíve read most of it. So I bought a setup of carbs, fuel pump and msd from someone who had this on their mk2.

      Iím putting it in my mk1 16v swap but holy **** this radiator and coolant neck on the head is giving me so many issues. Initially I had a civic radiator cause I saw it mention quite a bit. I didnít like they way it looked or how we had to angle it so had got one from S&P automotive. It was a tucked radiator for carb swaps and I sent it back as I would have to run an in-line fill for it and the inlet/outlet where on the passenger side and there was no room at all.





      So I sent that one back and got their mini tucked version and again didnít like it. The inlet/outlet was on the drivers side and running coolant hoses was just ugly. Had to buy these metal flexible ones and there was literally no room from the bottom of the carb to the coolant neck on the head to get a hose clamp on. Plus running the lower hose down and u see the front engine mount just looked awful





      So now Iím on radiator 4, scirocco style with and end tank and inlet/outlet on passenger side. But again the issue Iím having is with the bottom of the bike carbs and coolant neck.

      Iím assuming at this point Iím gonna have to get a new intake manifold where the carbs are angled more up or do some serious fab work to the front core support.

      This is how the carbs sit now, would it be ok to angle them more






      Sent from my iPhone using Tapatalk
      Are you using an aftermarket coolant neck for bike carbs?



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      @theoldnh

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      Yesterday 01:19 PM #2057
      Quote Originally Posted by vwaudipreferred View Post
      Are you using an aftermarket coolant neck for bike carbs?



      Sent from my iPhone using Tapatalk Pro
      I actually found that and ordered one, wasnít impressed with the build quality. Gonna have to take a dremel to mine and clean it up a lot .


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    9. Member yeayeayea's Avatar
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      Yesterday 03:53 PM #2058
      I used a stock radiator and radiator support and ABF waterneck but that was in a mk2. I too had the civic rad and wasn't a fan of the look. I didn't run filters though, so I had a bit more clearance. Could run the trumpet screens that some people have, they are mentioned in the thread.

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