those are called a cheater vent , do not use it I am a licensed plumber an d though it is a bit of work run your vent thru the roof .you can use 1.5" to just below the roof then transition to 3" it is not that hard to do , with a properly installed rubber flashing you will have no leaks. run...
keep it as stock as possible ,was my grandfathers first car driven tll 57 put away with the motor freshly rebuilt, taken out of strage in 81, technically my dads for now but I will be the next owner slow going as life got in the way for my dad till about 1998
hey all, just stumbled across this forum, thought it was graet, I am resto ing a1929 model A ford 60b hoping 2 build a new garage soon this site has lots of great ideas talk 2 u soon