dssur
+1y
have you ever heard the expression "you cant polish a turd?" it is rumored that the guy who said it tried to make a mazda fast.
You can buy lots of expensive parts. But starting with 86hp, even if you double it (VERY unlikely) you are still under 200 and have spent thousands.
A better option is to swap in a Kia Sportage motor with fuel injection. It is a 2 liter mazda block so it bolts in and bolt up to the stock trans. It has 140 hp stock. And upgrade from there, Jim (madlowmazda on here) tells us that a miata header will fit, and if you get Japanese FE3 cams you will be closer to 160. All in all a much more reliable engine than a bored and stroked truck motor with a huge carb.
And I love mazdas, so dont think I am knocking them. But I would rather just cruise than be fast stoplight to stoplight.