Miata LFX Swap (Singular Motorsports & Good-Win Racing)
#41
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#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
-Ryan
Last edited by ThePass; 07-09-2015 at 02:29 PM.
#44
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 10:43 AM. Reason: add text
#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.
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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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
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
Last edited by ThePass; 07-10-2015 at 01:03 PM.
#48
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.
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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#49
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-Ryan
#51
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
-Ryan
#52
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.
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.
#53
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.
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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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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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:
But REALLY, this is the focus: