Originally Posted by 18psi
(Post 1022951)
not bad. post plot
kinda expected more than 100@3k with a 2560 Ben, what's your VVT map look like down there? |
What would these numbers be on a Dynapack?
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4 Attachment(s)
Originally Posted by y8s
(Post 1022998)
Agree on that. my big fat mother of turbo on a stock motor was able to make 100 hp at 3200.
Yes, these numbers would be on DIYAutotune Dynapack. Sorry Zabac and JayL, Flipside manifold fits, but the throttlebody didn't and the timeframe prevented modifying this combination to fit with everything. Old dyno: Thank you DIYAutotune for your support! Here are couple cellphone pictures with graph. |
And what does your locost weigh?
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I needz 2560. Also, 230whp at 8psi with a stock 96 motor? Seems a bit optimistic, no?
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Originally Posted by Fireindc
(Post 1023029)
I needz 2560. Also, 230whp at 8psi with a stock 96 motor? Seems a bit optimistic, no?
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Originally Posted by JasonC SBB
(Post 1023007)
What would these numbers be on a Dynapack?
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A stock Miata makes under 100whp on our dyno. Your standard 12psi GT2560R FMII or BEGi S3 will make ~240 whp.
The straight exhaust and proper external wastegate on Heikki's locost allow the turbo to perform more efficiently than on a standard Miata. He's also .040 overbore, forged bottom end, valve springs, SUBs, etc etc. This is the first turbo VVT car on our dyno, and it's the highest power BP engine we've tuned to date. I wasn't sure how VICS and VVT would play together, but turning on VICS resulted in a 10ft lb improvement from 3600 up. |
Originally Posted by y8s
(Post 1022998)
Agree on that. my big fat mother of turbo on a stock motor was able to make 100 hp at 3200.
Ben, what's your VVT map look like down there? |
there's nothing bad about that dyno plot AT ALL--except for being right-side-up maybe.
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Yeah. Looks great. And I sold my squaretop. And ben probably still has his since he totally blew me off when I tried to buy his back in the day.
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I would be interested to see the timing map for this.
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Originally Posted by 18psi
(Post 1023083)
Yeah. Looks great. And I sold my squaretop. And ben probably still has his since he totally blew me off when I tried to buy his back in the day.
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No worries man, I'm just giving you a hard time. I ended up finding one anyway :)
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Displacement? Is it a +1mm overbore?
Compression ratio? |
The MAP/RPM curve looks odd for a 2560 with a nice open exhaust. Mine (FM2, FM 3" exhaust, 2560, built engine, 99 head) makes 200kpa by 3350 RPM, whereas that graph shows 3700.
It is a 2560, right? Not a typo for a 2860? --Ian |
Originally Posted by JasonC SBB
(Post 1023228)
Displacement? Is it a +1mm overbore?
Compression ratio? Wiseco pistons with 8.8 compression ratio after decking and adjusting the squish and compression ratio. turbo info on my for sale ad: The compressor has GARRET A/R 60 M24 1-1 on the casting. The bearing housing has HJ 01 06J 14411-69F00 466541-1 Turbine housing has Garret 2 turbine inlet flange is 72 mm x 45 mm with holes for 10 mm studs. T25. https://www.miataturbo.net/miata-par...ops-etc-69843/ Same log manifold made from weld-els used in this setup. |
any head work?
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Originally Posted by soviet
(Post 1023345)
any head work?
Trying to avoid high rpm float/7500 rpm harmonics issues with lighter weight followers and heavier springs. The Supertech valves are heavier than stock. The way the power curve is, I should not spend any time above 7000 unless it is short straight between turns and I can avoid shifting twice. |
Was VVT tuned in the spoolup area? (3000-4000 RPM)
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