Re: xterra KD24DE engine intake manifold modification
Posted: Tue Feb 27, 2024 8:29 am
Great pics Alvin. (Herb Petty's '66 and Ken Pletchers '69, I think)
Note the stock manifold has a heat shield. The tube headers might require one of these either on the headers or "loose skinning" the brake reservoirs, as it is hard to tell from the angle but they look kinda close. (could boil the fluid during heat soak, which is usually not when driving but when you pull in for gas and there is no more air flow thru the engine bay)
The 302 V8 roadster had a "gravel excursion" once and tore off the front air dam. All fine, we picked it up and went on, but next thing you know, engine temps are climbing. Turns out the air dam made a negative air pressure under the car that sucked out the heat. Once riveted back on (there might have been a zip tie in play, but I ain't telling) the car went back to running cool when pushed. (which was always when Eric drove)
Note the stock manifold has a heat shield. The tube headers might require one of these either on the headers or "loose skinning" the brake reservoirs, as it is hard to tell from the angle but they look kinda close. (could boil the fluid during heat soak, which is usually not when driving but when you pull in for gas and there is no more air flow thru the engine bay)
The 302 V8 roadster had a "gravel excursion" once and tore off the front air dam. All fine, we picked it up and went on, but next thing you know, engine temps are climbing. Turns out the air dam made a negative air pressure under the car that sucked out the heat. Once riveted back on (there might have been a zip tie in play, but I ain't telling) the car went back to running cool when pushed. (which was always when Eric drove)