1.8 8v inlet manifold getting hot

[oli325]

went for drive today, got about 10 miles from home and car started to hesitate and missfire at anything over 3500rpm,managed to get it home and looked at carb(WEBBER) i could see the inlet manifold was v hot touched it and it was. i burnt my finger,was thinking that there should be a heatshield between the exhaust and inlet manifolds,can anyone shed some light on this prob

[mr brightside]

the misfire is very unlikely to be the result of a hot inlet manifold, the engine runs better with it hot cos the fuel vapourises easier. i can't remember if a carb engine is fitted with a heatshield or not sorry.

[oli325]

sorted it out now had the wrong main jet in the carb

[Karl]

the inlet mani will always get hot due to where it is,

what your really want is a tubular exhaust manifold heat wrapped and a heat sheld as this will reduce under bonnet temps, and induction temps leading to more power, plus the hotter exhaust gasses will flow faster too leading to more power