92 MX-5, stock 1.6 GT2860RS @17-18 PSI
6 Attachment(s)
Did a run on Superflow 4wd dyno today after building 3" DP last night.
Setup: 1.6 stock engine 203t.km (rebuilded ~20t.km ago) RX-7 460cc injectors BEGI Cast manifold from Shanghai-S kit 3" DP 2,5" exchaust MBC Noname IC (2,5" inlet/outlet) IC piping 2,5" MSPNP Coolant reroute 1.8 lightened flywheel and FM Level 1 clutch Garret GT2860RS with 0.64 A/R 3" AEM airfilter 174,2kw(236,8WHP)\281,6Nm(207.7lb-ft) Boost 17-18 PSI (still creeping 2-3PSI) Not the createst one, but car pulls strong and fun to drive. Will post proper dyno file, video and log/setup from MS over the weekend |
6 Attachment(s)
Here's one of the log files from dyno (hope someone cares to comment it).
Also better graph on best run. |
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peak torque in ft-lbs should be
70 to 72 ft-lbs * 1.6L * (1+boost/14.7) At 17 psi should be > 240 ft-lbs or 323 N-m |
It is lower than most dyno pulls here.
I can think of 3 reasons: 1. Something wrong with engine/setup altough engine sounds healty and compression/leakdown shows no issues (headjob is unknow quality so might benefit fromthere) 2. Euro 1.6 has different cam profile 3. Dyno i used reads low, really wanted to do comparison on dynojet one we have here, but it's broken at the moment. |
280hp on 460's seems high for the injectors. I was running out of injector at about 260 even with methanol.
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I think these 460cc measured 490cc and dutycycle according to log is 79-80
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I was reading it wrong thats 236whp thats sounds right i was thinking it said 280hp. Does seem a little low for that pressure and that turbo, but who knows with dynos honestly it could just be reading low. If you can take it the track and get a mph and time you would know what its making.
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How much timing are you running in boost?
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I saw your log and you AFR under boost are oscilate between 11.9 and 12.2 and as you increase on RPM is set around 12.1. Is it me or that a bit too lean for the boost he is running?
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Yeah seems lean should be low 11's
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