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Turbo Miata Race Car - 302 rwHP

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Old 07-09-2014, 07:57 PM
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Default Turbo Miata Race Car - 302 rwHP
Finally, my Showroom Spec Miata has been turbo'd, tuned, new AFCO suspension and 275 hoosiers added ….. and it is everything I hoped it would be when we got drunk 3 years ago and decided to do this …….…..lets go Porsche killing

Build Specs:

1990 Spec Miata chassis
1994 1.8 engine
Mazdaspeed 6 speed transmission
949 racing twin disc racing clutch
Torsen 4.1 LSD
Wiseco pistons with Eagle H-beam connecting rods
Mazdaspeed crankshaft with ACL racing bearing
Supertec valve springs/retainers/keepers Stock valves
GT2871RS turbo
750cc Injector Dynamic injectors
Deatschwerks 300lph intank pump
Turbos-smart Comp-gate 40mm waste gate
Mocal 235 matrix 25 row oil cooler
AEM EMS v1 (30-1710 box)
AEM EBC solenoid
Monster mad max front splitter
Supermiata GTC 200 wing
repainted gloss black #302
TrackSpeed BBK 11.75 with DTC60s
Prothane complete bushing kit
Flyin' Miata AFCO suspension - 750/450
15 x 9" Konig Dial In wheels
275 Hoosier R6 with -3 degrees camber
2450 lbs inc driver and full tank o' gas

302 rwHP / 254 ft/lb on 93 gas at 11psi --- photo of dyno added below

……… enjoy the video………………………...


https://vimeo.com/99497249
Attached Thumbnails Turbo Miata Race Car - 302 rwHP-rrm_4407-001.jpg   Turbo Miata Race Car - 302 rwHP-rrm_4489.jpg  
Last edited by SSMtobeturbo'd; 07-22-2014 at 03:24 PM.
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Old 07-09-2014, 09:36 PM
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Which 15x9 Konigs? Did you need the 5mm spacer to clear the brakes?
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Old 07-09-2014, 09:39 PM
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Originally Posted by Savington
Which 15x9 Konigs? Did you need the 5mm spacer to clear the brakes?
x2 I must know!!!
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Old 07-09-2014, 09:40 PM
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double post no care

looks like Konig "Dial-In" is the only thing they have in 15x9
Konig "Dial In" 15x9 Gloss Black for Miata, 15x9
Attached Thumbnails Turbo Miata Race Car - 302 rwHP-konig-dial-miata-wheels-gloss-black.jpg  
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Old 07-09-2014, 09:41 PM
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Originally Posted by Savington
Which 15x9 Konigs? Did you need the 5mm spacer to clear the brakes?
Dial In's - no spacers
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Old 07-09-2014, 09:50 PM
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I just got them too, in bronze, they're nice and light but like the Advantis Goodwin sells the spokes stick out :(
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Old 07-09-2014, 10:00 PM
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Cooling system not listed, hoping there is an oil cooler involved

Mean looking build, e-high-five!
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Old 07-09-2014, 11:05 PM
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Great power for 11psi and 93 oct.
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Old 07-09-2014, 11:28 PM
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302 whp @ 11psi on stock size valves and stock head?
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Old 07-10-2014, 12:31 AM
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I'm a little dubious of the dyno numbers as well, but nice build nonetheless.
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Old 07-10-2014, 12:58 AM
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yeah...ummm...nice car but 300whp on 11psi out of a 2871 on pump gas.....that's a bit optimistic to say the least
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Old 07-10-2014, 02:32 AM
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Just FYI, I made 300whp at 14psi on E85 on the same turbo through a stock VVT head. I would expect a pump gas car to need another ~2psi or so to make the same power, especially through a '94 head.
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Old 07-10-2014, 05:59 AM
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Stock sized valves - yup
Mild port work
Port matched intake and exhaust ports to manifolds

I know the video is grainy but if you can reference the boost gauge in the air vent it's an autometer 4303. The video shows just over 10psi.

It makes good power.

The spokes on the wheels do stick out but with the thick sidewalls/bead protection on the R6's the tires protect the spokes.

Big thanks to Andrew for some of the parts to make project happen
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Old 07-10-2014, 07:27 AM
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Originally Posted by ThePass
Cooling system not listed, hoping there is an oil cooler involved

Mean looking build, e-high-five!
Mocal 235 matrix 25 row oil cooler
- build specs updated
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Old 07-10-2014, 07:35 AM
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Originally Posted by 18psi
yeah...ummm...nice car but 300whp on 11psi out of a 2871 on pump gas.....that's a bit optimistic to say the least
See reply from my main man 507 Miata who is the real brains in this operation.
The car was tuned at Evans Tuning in PA off E85 (which is tough to find near any race tracks in the east coast mid atlantic region) onto Premium gas. Those were the facts and figures I remember ……. but we are going back to ET in 3 weeks on the way to Watkins Glen for some partial throttle tuning so I'll confirm the figures then and get a dyno chart

Ultimately, the car is a bullet and I'm delighted with its track performance

…….. now just need to focus on the talentless nut behind the wheel…..
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Old 07-10-2014, 07:57 AM
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Originally Posted by Savington
Just FYI, I made 300whp at 14psi on E85 on the same turbo through a stock VVT head. I would expect a pump gas car to need another ~2psi or so to make the same power, especially through a '94 head.
attached is a photo of the dyno I took while car was getting tuned at Evans = shows 300+ rwHP in green and torque in blue. Torque is showing 250 ish (so must have been 254, not 284 as I thought) so I'll update the build specs to reflect this and will keep you all updated after next visit to Evans tuning...


- image too big - will resize and post soon ……. can't add to this post - see below
Last edited by SSMtobeturbo'd; 07-10-2014 at 08:15 AM.
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Old 07-10-2014, 08:14 AM
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Dyno photo cropped to size
Attached Thumbnails Turbo Miata Race Car - 302 rwHP-302-dyno-photo-resized-1200-copy.jpg  
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Old 07-10-2014, 08:24 AM
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5 mins later - found the original dyno file
Attached Thumbnails Turbo Miata Race Car - 302 rwHP-302-dyno-original-et.jpg  
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Old 07-10-2014, 08:25 AM
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Your dyno says 'flywheel tq', could that be 302bhp rather than whp?
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Old 07-10-2014, 08:48 AM
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Thats the weirdest dyno plot I've ever seen.
Looks like it spools by 3k and yet TQ peak is at 6k rpm??
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