Originally Posted by
boost monster
My son has just modified a standard ST manifold to fit his mk2 Fiesta paying attention to the length of the secondary’s just turning them to the side rather than going forward like in the Focus. These manifold are regarded as the best with most aftermarket ones losing power.
Thats exactly what I'm doing, because I have a diesel gearbox the front mounted starter fouls the original St170 manifold. I'm taking an inch and a bit off of the from the head to clear the radiator & going down into a 4 to 1 collector. No space for a 2 - 1 realistically. I will retain all of the original geometry from the ST manifold, just tweaked over to clear my starter.
The engine is mounted quite far forward in order for the MTX75 gearbox to clear the steering rack, while also not having the engine hang out underneath the car. Took a lot of pushing and shoving to find where it would finally live with an acceptable amount of room on all sides, this is also why I sunk the engine into the drivers side chassis rail so that the outer drive shafts would remain
almost equal.