The stock 1.6 is good for about 220-240 ft/lbs of torque. How much boost it takes to hit that number will depend which turbo and other factors. The 5 speed gear box is also good for about that number. I'd recommend staying away from this figure and going for more reliability. You can run 180-200 whp and be well under the torque numbers and this The Miata’s 11.9-gallon tank will carry you about 150 miles with some restraint, but good luck with that. Either engine will have no problem punting the Miata’s 2696 pounds through time and Build list in comments! : r/Miata. The quest for a 300+HP Miata. Build list in comments! Eagle H beam rods, 84mm supertech Pistons, wiesco rings, boundary engineering oil pump, ACL race bearings, ARP main studs, ARP head studs, cosmetic gasket, 640cc flow force injectors, new valves, BEGI turbo manifold, ISR RS3871s turbo, 2.5" downpipe to 3 I have a feeling 50-100whp more is a safe guess of what you can hold on stock trans and engine. So pretty much FBO. I'm pretty sure all big power j series builds ditch the auto for a manual as the stock auto trans were pretty much built for the power they leave the factory with. 3/8/13 2:45 p.m. If you want a Miata diff, you're stuck with a 3.636 as the highest (and most expensive) option. Best you'll do from a junkyard is going to be 3.9. Going rate is $500-800, ignoring outliers. There are aftermarket options such as the OS Giken, but they're in the $1500 range for the diff alone. Measuring Up. We first wanted to quantify the value of the new engine on track. How would that bump from 155 to 181 horsepower feel? We transferred over all of our C Street-legal autocross parts–Koni dampers, Karcepts anti-roll bar, Good-Win Racing RoadsterSport muffler, Pagid Racing brake pads, 17x7-inch Enkei RPF1 wheels, and 225/45R17 Bridgestone RE-71R tires–and performed an alignment. 5X Racing. Mon - Fri 9:00 - 5:00 PM EST. team@5xracing.com. 5295 Alligator Lake Road. St. Cloud, FL 34772. Mazda Miata Transmission and Shifter Information from the 5X Racing Technology and Information Center. The 6 speed is good up to 400+ hp. Get one from a 99 10th aniversary or any of the 01+s. Don't forget to get a different rear end ratio. Stock on 94-97 torsens are 4.10, I recommend a 3.90. 3.636 rear is ideal with the 6-box, but much tougher to find. The 6-speed cars in the US came with 3.90s. With a 1.6 na motor, how much HP do you think you can add to the stock 100ish HP, with out a turbo or supercharger? Question I’m talking cold air intake, 14 degree timing mod, exhaust header, performance exhaust, etc. Anything that’s going to turn my push lawnmower of a engine into a somewhat faster car. pOzc6cp.

how much hp can a miata handle