I'm working on a small race car, powered by a CBR600. Car ran at compention in 2006 on a different motor and a restricted fuel injection setup to meet compention rules, but has since been switched to a lower compression engine, and is currently running a quad-carb setup, but still the stand-alone spark control. Pulled apart the carbs, cleaned them, and got it to start and drive around, but it's running rather rich, and is hard to start. I know it's being over fueled, that's being delt with tommrow. I don't think the vacumm hoses are set up properly for the emissions delete either.

I have alot more time than money, but I do have the tools and possibly the parts to go back to fuel injection, or to go single carb, with one that I'm more familar with. Any info may be helpful, as I'm coming from an EFI and Side-Draft (classic mini) dominated past.

 

If it's for Formula SAE, you don't want to go to a single carb.

If the engine was originally fuel-injected, that would be the way to go.

What carbs are on there now?

 

F-SAE + Carbs = fail. CBR600 Engines gain insane amounts of power just by doing an apropiate tune on the restricted 20mm intake.

 

The car had previously been scavenged for parts, so going back to the EFI may be impossible. The intent is to go to un-restricted, as it's now our 'screw around'/driver training vehicle. All I know about the current carbs is that they are newer Honda carbs (2001-2003 I believe), have built in velocity stacks, and are the proper spacing for the CBR600 engine. The fuel injection setup is scattered and was home built by an upperclassman that graduated a couple years ago, I haven't found the throttle body yet (only used 1). The EFI setup only used one injector, and had the restrictor built into the manifold, so we'd rather get the carbs going. I plan to make some changes to the fuel delivery system tonight, hopefully that will fix or atleast help things, as the carbs are being overrun right now.

F-SAE rules no longer apply to this car, so we want to go fully un-restricted.