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Race Prep Miata race-only chat. 949 Racing - Rim & tires

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Old 08-06-2015, 06:02 PM   #21
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Thank you! Im really wishing I had video of my championship lap from Sonoma last year. This one I can see many flaws in, That one was a mega lap
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Old 11-18-2015, 07:07 PM   #23
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(Late to the party. . .)

Wow! Eric, that's an exceptional time especially for TTD! Can you share some details of your car build? Is that a 4.77 FD on A7s for TT and R7 for PT (225?)?

Edit: I found this, and read that you tuned to 156whp to comply in PTD. I'd love to hear more about the real guts of the build, as no Miatas up here are making that kind of power. I suspect a lot of it is in the tuning. I asked Emilio if he'd tune my car if I brought it to him, and he said "we don't offer tuning services". We have a local (NorCal) tuner that's good, but likely conservative especially with the octane and the tuning at the top end.

99 engine
.080" over 11:1 pistons with xx rings from Emilio
SCAT rods (went beefy and heavy because my last motor pooped out Carillos)
Calico coated ACL race bearings: Rod and main
oil squirters removed
IJ crank scraper
BE Race oil pump shimmed for 80 PSI
Supermiata CNC head with +1 valves
stock 99 cams
stock 99 manifold with VICS left unplugged
Skunk2 TB
RB header
custom 2.5" exhaust
supermiata crank damper
everything fully balanced
ACT prolite flywheel and 4 puck unsprung clutch (because Emilios race clutch was out of budget at the moment)

makes 178/146 unrestricted

Last edited by 1999NB; 11-18-2015 at 07:29 PM.
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