Miata LFX Swap (Singular Motorsports & Good-Win Racing) - Page 3 - Miata Turbo Forum -Boost cars, acquire cats.

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Old 07-09-2015, 01:33 PM   #41
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Quote:
Originally Posted by portabull View Post
one more question about your shift linkage: does it have a u-joint in the middle leg? thanks!
Snapped a close up pic for ya. Mine is missing the bushings in the center linkage, I'll likely make some rather than order from GM, unless the V8R unit turns out to have bushings with it when it arrives..

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Old 07-09-2015, 02:28 PM   #42
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Looking forward to seeing your progress.

I was really interested in this swap, but the radio silence out of V8R for so long had me drifting back towards a V8. If the development of the swap is actually progressing, I could get interested again.
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Old 07-09-2015, 03:14 PM   #43
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From what I've seen, V8R has been hard at work on this swap since the maiden voyage of their test car less than a year ago, trying many different configurations of parts, tearing everything back apart and inspecting for wear and stress, etc. etc. etc. but that takes mountains of time and they've stayed low-key on it while they work through that process.

-Ryan

Last edited by ThePass; 07-09-2015 at 03:29 PM.
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Old 07-10-2015, 11:41 AM   #44
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thanks for the picture. i couldn't quite make out the linkage in the picture of the whole transmission. our linkage is aluminum and we're not looking forward to the fabrication that carnut had to do.... hopefully the v8r modified part will get to you quickly.

Last edited by portabull; 07-10-2015 at 11:43 AM. Reason: add text
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Old 07-10-2015, 01:41 PM   #45
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Power Steering kit. This adapts the GM power steering pump to an NB rack. All of the hard lines are replaced and it includes fittings for both the pump and the rack.

Not 100% sure at this point what I'll end up doing for the steering. I was initially planning to run without power assist for the weight benefit. But, haven't had power steering for years, and I picture it being really nice to have again - easier to be fast and consistent if you're comfortable after all. BUT, will very likely need a cooler for the P/S fluid for track use. At any rate, I made sure to get the P/S pump with the motor, so I can play with it.


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Old 07-10-2015, 01:44 PM   #46
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V8Roadsters just finished up dyno tuning on their car. 99* F ambient, 60%RH on a dynojet so these are conservative numbers. On a cooler day they would be in the 290's.

Yes please:



In the next few weeks they plan to switch over to E85, which should easily break 300hp.

If you google 2012 Camaro dyno sheets, the few you'll find are lower than this on average. More power in the Miata application is in part due to improved tuning and in part due to less rotational mass. V8R's numbers above are with the stock flywheel and clutch (HEAVY). Expect to see a bit more at the wheels with a lighter combo. We have exciting things in the works on this front.

-Ryan
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Last edited by ThePass; 07-10-2015 at 02:03 PM.
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Old 07-10-2015, 02:05 PM   #47
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Damn.
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Old 07-10-2015, 03:06 PM   #48
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249 ft lbs @ 4k. you'll notice that off the corners.



I ran my car originally without power steering. it was fine on the road. Autocross was a real bitch. i would get out of a 90 sec run dripping with sweat and my arms pumping. On track i didn't feel i was able to catch the car as easy if i was over steering. so i put PS back on.
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Old 07-10-2015, 03:29 PM   #49
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Quote:
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Autocross was a real bitch. i would get out of a 90 sec run dripping with sweat and my arms pumping.
Same experience here. Giving back-to-back rides at the autocross leaves me worn out. The big track is less work, but there are some tracks with big long high-g sweepers that will leave me with sore shoulders by the end of a session. I'd like to put a focus on making the car easy to drive.

-Ryan
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Old 07-10-2015, 03:32 PM   #50
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Torque graph is pretty flat.
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Old 07-10-2015, 04:07 PM   #51
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Quote:
Originally Posted by ThePass View Post
Same experience here. Giving back-to-back rides at the autocross leaves me worn out. The big track is less work, but there are some tracks with big long high-g sweepers that will leave me with sore shoulders by the end of a session. I'd like to put a focus on making the car easy to drive.

-Ryan
Good to know. I might leave the power steering on my car that's getting the 245 RC1s.
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Old 07-10-2015, 04:08 PM   #52
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That's a really nice torque curve.

Would adding forced induction to this motor defeat the purpose of the swap? I can't see how this wouldn't be a 400 whp setup with relatively mild forced induction. I have too much sunk cost in the current boat anchor to find our for myself, just idly curious.

Much props for this whole project.
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Old 07-10-2015, 04:24 PM   #53
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If it were me, I'd leave the PS out for simplicity. Pulled the PS out of the Red car and honestly don't miss it. I don't think you can directly compare Johnny's V8 experience to this. From what I've read, the V8 adds weight over the front wheels. This swap should remove weight over the front wheels . . . especially compared to your old turbo BP setup with V-mount radiator/intercooler.

All that said, I don't autocross, and I'm a big dude, so . . . . In the end, do what you want, just playing Devil's Advocate.
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Old 07-10-2015, 04:28 PM   #54
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Quote:
Originally Posted by AlwaysBroken View Post
That's a really nice torque curve.

Would adding forced induction to this motor defeat the purpose of the swap?
Depends on your goals I think.

If you want a nicely balanced drive-and-forget track car with gobs of torque everywhere, normally aspirated is the way to go.

If you're after a wild street car or dyno bragging rights, then blow it! In fact, V8 it and then blow it!

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Old 07-10-2015, 05:52 PM   #55
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This swap is about 300whp with the reliability of stock. If you want it to be 400whp just start with the v8. It will be more reliable and cheaper than v6 plus standalone plus turbo plus injectors plus intercooler plus piping plus upgraded clutch etc.
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Old 07-10-2015, 06:09 PM   #56
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I'm really scared that this thread is going to cause me to sell my spot in the TSE turbo kit group buy.
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Old 07-10-2015, 06:09 PM   #57
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Comes with twin turbos in the ATS-V and CTS-V Sport. 450hp if I remember correctly
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Old 07-10-2015, 06:40 PM   #58
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Yes I have dirty thoughts in the back of my brain about future possibilities if one found the right donor car. The LF3 (in ATS-V) is the same block, forged internals, different compression, two turbos bolted to the sides of the motor (note: no turbo manifold - just turbo bolted to head)

But REALLY, this is the focus:

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This swap is about 300whp with the reliability of stock.
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Old 07-13-2015, 06:57 PM   #59
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plot looks great, but, every time I see someone start a pull at 3k or post a screen shot ignoring everything below 3.5k I want to kill someone
if you have the full plot from like 2k, please post up
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Old 07-14-2015, 02:26 PM   #60
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not rwhp, but sae certified....

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Last edited by portabull; 07-14-2015 at 03:38 PM. Reason: typo
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