Miata LFX Swap (Singular Motorsports & Good-Win Racing)
05-10-2018, 06:26 PM
#861
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I've been prepping like a madman. Why?
I've been accepted to the Ultimate Track Car Challenge @ Virginia International Raceway May 18/19!
In Emilio's words:
UTCC is a no holds barred, no rules time attack competition held at VIR every year. It's put together by Grassroots Motorsports. Coincides with NASA's Hyperfest which is a motorsports festival with live music shows late into the night, vendor rows, drifting, w2w racing and lots of other stuff going on.
It's probably the single largest amateur motorsports event in North America. Tens of thousands of people will filter through the gates during the 4 day event.
I'm joining the guys at 949Racing / Supermiata to make the journey to Virginia and see if we can raise some eyebrows of those who never thought a Miata could play in the deep end. They're taking Bullet, the car they ran at SLB 2017 but now with the **** turned wayyy up on the boost and making north of 400whp. That will be a monster. Mine will be the car with less power but more refined aero and probably more total downforce. VIR has some suuuper long straights so I expect more power will make the faster car there, but in the Miatas vs the World conquest, I think between the two cars we'll be able to accomplish a lot.
The plan after GTA Round 1 was to make a few big aero updates to the car with the relatively large gap I had before Round 3 in June. I was just starting to dive into that when I got word about UTCC. Suddenly the timeframe was cut in half, the car needs to be ready to head across the country by May 13! I axed a few things off the list that I knew I couldn't get to, and spent every day since then in the shop after work to bring as much of the updates to fruition in time. The largest change is an entirely new front end aero setup, but I also had to make several changes to be NASA compliant (like moving the lithium battery from the passenger area to the trunk), and move to a new even larger rear wing. I'll have pics at some point.
Format for UTCC this year is interesting. Friday is as it has always been, essentially a time attack format where fastest lap time of the day from multiple sessions counts. However, new for 2018, the fastest 20 cars plus 3 staff picks go to a Knockout round on Saturday:
This is going to be fun!
I've been accepted to the Ultimate Track Car Challenge @ Virginia International Raceway May 18/19!
In Emilio's words:
UTCC is a no holds barred, no rules time attack competition held at VIR every year. It's put together by Grassroots Motorsports. Coincides with NASA's Hyperfest which is a motorsports festival with live music shows late into the night, vendor rows, drifting, w2w racing and lots of other stuff going on.
It's probably the single largest amateur motorsports event in North America. Tens of thousands of people will filter through the gates during the 4 day event.
I'm joining the guys at 949Racing / Supermiata to make the journey to Virginia and see if we can raise some eyebrows of those who never thought a Miata could play in the deep end. They're taking Bullet, the car they ran at SLB 2017 but now with the **** turned wayyy up on the boost and making north of 400whp. That will be a monster. Mine will be the car with less power but more refined aero and probably more total downforce. VIR has some suuuper long straights so I expect more power will make the faster car there, but in the Miatas vs the World conquest, I think between the two cars we'll be able to accomplish a lot.
The plan after GTA Round 1 was to make a few big aero updates to the car with the relatively large gap I had before Round 3 in June. I was just starting to dive into that when I got word about UTCC. Suddenly the timeframe was cut in half, the car needs to be ready to head across the country by May 13! I axed a few things off the list that I knew I couldn't get to, and spent every day since then in the shop after work to bring as much of the updates to fruition in time. The largest change is an entirely new front end aero setup, but I also had to make several changes to be NASA compliant (like moving the lithium battery from the passenger area to the trunk), and move to a new even larger rear wing. I'll have pics at some point.
Format for UTCC this year is interesting. Friday is as it has always been, essentially a time attack format where fastest lap time of the day from multiple sessions counts. However, new for 2018, the fastest 20 cars plus 3 staff picks go to a Knockout round on Saturday:
Originally Posted by Grassroots Motorsports
The field of 23 cars will be released from the false grid onto a green track. After two laps, the three cars with the slowest best lap times will be black flagged and will immediately return to the pits. With each successive lap the three slowest cars for THAT lap will be removed. That means each lap is unique and only serves to eliminate the three slowest cars on that lap. This process continues with each lap until the field has been trimmed to the fastest five. The top five will receive a white flag at the start/finish line indicating they are on their final lap. The fastest time for that final lap is the winner.
After the Knockout Finals are complete, we’ll pull the top five cars over to the podium by the tech shed in the paddock and announce first, second and third place and hand out awards.
The key to this competition is consistency, since the times reset with every round. And per the NASA time trials rules, if a driver places more than two wheels off course during an incident, or has both front or both rear wheels off course at the same time, they are automatically eliminated.
After the Knockout Finals are complete, we’ll pull the top five cars over to the podium by the tech shed in the paddock and announce first, second and third place and hand out awards.
The key to this competition is consistency, since the times reset with every round. And per the NASA time trials rules, if a driver places more than two wheels off course during an incident, or has both front or both rear wheels off course at the same time, they are automatically eliminated.
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05-10-2018, 10:37 PM
#864
Great motoiq article Ryan! Love the deep dive into the particulars of the build. I know they’re scattered about around here but it’s great seeing it condensed like that.
Good luck to all you guys at VIR. Really fast fun track!
Good luck to all you guys at VIR. Really fast fun track!
Last edited by k24madness; 05-14-2018 at 11:15 PM.
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05-14-2018, 04:53 PM
#869
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Improved but never 100%. Going to the factory setup that we know works. Already would have except GMPartsDirect sent the wrong parts so I'm working on return/exchange for the right stuff with them right now.
For records, correct PNs are:
Flywheel 24245480
Clutch 19353433
For records, correct PNs are:
Flywheel 24245480
Clutch 19353433
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05-14-2018, 09:17 PM
#870
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Improved but never 100%. Going to the factory setup that we know works. Already would have except GMPartsDirect sent the wrong parts so I'm working on return/exchange for the right stuff with them right now.
For records, correct PNs are:
Flywheel 24245480
Clutch 19353433
For records, correct PNs are:
Flywheel 24245480
Clutch 19353433
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05-14-2018, 09:20 PM
#871
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Psssttt... https://www.summitracing.com/parts/luk-04-262 if you don't wanna go through gm. And yes it did come with a new flywheel.
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05-14-2018, 09:25 PM
#872
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Psssttt... https://www.summitracing.com/parts/luk-04-262 if you don't wanna go through gm. And yes it did come with a new flywheel.
So far, my clutch is so soft and has zero feel, pretty sure it's bled just fine as it goes in and out of gear without grinding. But so soft compared to my old 949 twin disk.
Is this a similar experience as everyone else running the stock/factory parts?
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05-14-2018, 10:53 PM
#873
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Yeah, we snagged it from summit because we're only an hour away and they're pretty good on returns - Luk 04-262 also includes a new slave as well, pretty good for the price.
I think it's really hard to judge pedal feel after driving any car for a few months - I seem to recall the oem being fairly light before the flywheel started rattling teeth at 2500rpm.
I think it's really hard to judge pedal feel after driving any car for a few months - I seem to recall the oem being fairly light before the flywheel started rattling teeth at 2500rpm.
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05-15-2018, 01:15 AM
#874
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Psssttt... https://www.summitracing.com/parts/luk-04-262 if you don't wanna go through gm. And yes it did come with a new flywheel.
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05-29-2018, 11:40 AM
#875
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Ryan,
I had my LFX Miata at Streets of Willow yesterday and with 93 degree ambient i was seeing coolant over 240F and oil at 285F. That's with a TSE radiator and 16 row oil cooler. I'm getting a higher pressure (30PSI) radiator cap to make sure I don't boil anything.
What kind of temps are you seeing around the track typically?
I had my LFX Miata at Streets of Willow yesterday and with 93 degree ambient i was seeing coolant over 240F and oil at 285F. That's with a TSE radiator and 16 row oil cooler. I'm getting a higher pressure (30PSI) radiator cap to make sure I don't boil anything.
What kind of temps are you seeing around the track typically?
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05-29-2018, 12:37 PM
#876
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I'm usually 220-225 coolant, 250-260 oil. The upper end of those ranges are on a 90° day. Goodwin Racing triple pass NC radiator, no oil cooler, good ducting (the importance of ducting can't be overstated)
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05-29-2018, 12:39 PM
#877
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Thank you for the info. My ducting is garbage since it was done back when i had an intercooler and associated piping on front so there are plenty of holes in it. Hoping I can get my temps down to a manageable level
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06-03-2018, 03:36 PM
#879
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Found another clutch/flywheel option that I haven't seen mentioned before.
https://www.xclutchusa.com/uploads/f...ch_pdf_cat.pdf
They list the referenced part numbers for the Chevy Colorado and a few other vehicles on their website. (KGM26631-1A and KGM26631-1C)
3.6L Petrol 2015- LFX 3.6L KGM26631-1A 510 SMF Conversion Kit incl. C/moly F/W, P/P & F/W Bolts (Converts OE DMF Kit)
(edit: part numbers are in the video description)
https://www.xclutchusa.com/uploads/f...ch_pdf_cat.pdf
They list the referenced part numbers for the Chevy Colorado and a few other vehicles on their website. (KGM26631-1A and KGM26631-1C)
3.6L Petrol 2015- LFX 3.6L KGM26631-1A 510 SMF Conversion Kit incl. C/moly F/W, P/P & F/W Bolts (Converts OE DMF Kit)
Last edited by LukeG; 06-04-2018 at 11:39 AM.
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