Quote:
Originally Posted by Overdrive
Interesting to note that the exact same kind of threads have been going for 15-16 years now on the Miata net. Most of us gave up years ago on getting any measurable gains from intake and exhaust and just put 20psi to the intake side and shazaam, 300hp from 1.8 liters! I am new here and still havent found the right S but most of my friends are very reluctant to add forced induction on the Vtec like we do on the Miatas. Is this a real concern or imagined? The Miata benefits from being designed originally as a turbo engine for the GLC Turbo and so all the blocks were made that way. Above about 250hp though, you have to build up the internals some. Is the S still reliable at 8-10psi boost?
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BECAUSE THE S2K RUNS COMPRESSION AT 11.1 TO 1, YOU HAVE TO BE EXTREMELY CAREFUL WHEN ADDING A TURBO. TYPICALLY, THE MAX IS USUALLY 6-7 PSI. THE GUYS PUTTING LARGE TURBOS ON THEIR S2K'S ARE FIRST LOWERING THE COMPRESSION.
SUPERCHARGERS ARE MUCH SAFER AND I BELIEVE THE BEST WAY TO GO W THE S2K. IF REALLY LARGE GAINS IN HP ARE WHAT U ARE LOOKING FOR, THEN THE STOCK INTERNALS WOULD NEED TO BE BEEFED UP, EXCEEDINGLY EXPENSIVE. A SAFE SUPERCHGER SET UP WITH AROUND 6-7 P.S.I. WILL USUALLY GIVE YOU ANYWHERE FROM 325 TO 350 HP, OR POSSIBLY MORE IF U WANT TO RISK BLOWING UP YOUR ENGINE RUNNING HIGHER BOOST LEVELS! SO TO ANSWER YOUR QUESTION, IN MY VIEW, 8-10 PSI IS TOO MUCH BOOST TO RUN SAFELY.