turbo 6 bangers post here
Hey guys, here is my next question. While I was at the nationals last week I talked to a holley rep about his thoughts on my carb choice of a 350 2 barrel. He agreed that with a fairly stock motor and a turbo that is the correct choice, but he also told me I needed to have the carb modified. I knew I needed to change the float, but figured since I was running only 10lbs tops I wouldn't need to worry about having any other changes made. Thoughts?
Aaron is giving you good advice. The reason for this carb business is that the metering circuits on any carb, 2 or 4 bbl are originally designed to deal with atmospheric pressure pushing its way through the venturis into the engine.
When you start shoving a lot more air though there, the metering goes all haywire, and usually, the result is more air, yes, but not a commensurately larger amount of gas...
That equals a lean mixture.
A lean mixture is a sure-fire recipe for detonation...
Detonation under boost is a recipe for catastrorophic engine failure.
BOOM!!!
There go the pistons.... and maybe the rods...
All unnecessarily, with the right carb mods.
Even ten pounds of boost is playing with fire, especially, when running stock pistons.
The mods to a two-barrel are probably not that complicated, and are absolutely necessary with forced induction.
Good insurance!
I don't have the URL for the hangar 18 mods page but it's probably easily available on Google... or, maybe Aaron has it...
Good luck!!!:cheers: