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Originally Posted by whooligan
What mods are required to the head/bottom end? ie porting, lower compression pistons etc. |
I have read that it could be laggy on a 1.8 ltr but have been told a 2ltr would be alright. I wasn't to worryed about lag issues cause i have big valves road/rally cam 25/75. bored 60 thou. The only limit would be how much the 350 holley could flow. I wanted to get around 180hp at the wheels. I have only got standard bottom end.
Here's some info:
"Mazda and Hitachi jointly developed the HT18S-2S Twin Scroll turbocharger for the 13B Turbo. This new turbocharger was designed to have virtually no " turbo lag " by having a flap that varies ( vacuum operated @ above 2500rpm ) depending on the load that opens wider during heavy load to have greater throuput and torque band. The turbo had two exhaust intakes into the turbine, the turbo acted as two turbos, by having both of advantages of small and big turbos, giving fast low end torque response and high end power. The turbine side was water cooled where the main body was cooled by a dual-ski heat shield."