LFX Engine Swap (GM V6) at GWR

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Re: LFX Engine Swap (GM V6) at GWR

Postby Ryan @ GWR » Wed Dec 06, 2017 9:17 pm

Chuckwalla Valley Raceway. New Miata lap records in both directions. Counter-clockwise 1:51.9 / Clockwise 1:51.4

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Two day event at CVR, CCW Saturday then CW Sunday. Just a fun weekend getting laps in the car, getting more comfortable with it, etc. Kept data collection and adjustments light and just did lots and lots of laps. Fast laps in this thing requires a lot of trust in how fast it will go through sections. Car was happy to run all day long both days. Reminds me of tracking a naturally aspirated Miata just with the an entirely different performance envelope. Using leftover tires, had one set with over 20 heat cycles that I had already used at ACS, MRLS, and day 1 of SLB. Set 2 were fresher with just day 2 of SLB on them. Saturday's CCW time was on the old set. Switched to the fresher tires for the last session but never got clean laps, was doing 1:52's amidst traffic. CW was a little less drama on the fresher tires. It's a little ridiculous how fast the car is. Fastest car on track Saturday, 2nd fastest Sunday behind a GT1 class 911 Turbo on full slicks and the whole nine. Most cars in red group were doing ~6-12 seconds slower pace so clean laps were scarce because I'd almost always catch someone.

Counter-clockwise:



Clockwise:



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Ryan @ GWR
 
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Re: LFX Engine Swap (GM V6) at GWR

Postby Carguy123 » Sat Dec 09, 2017 9:34 pm

Congrats on the times. I'm glad to see that it isn't taking a lot of getting used to.

A totally unrelated question, but since a 6 speed isn't needed on the track, is the bell housing bolt pattern on the LFX the same as other engines so that possibly a more compact and lighter 5 speed might be used?

I had fewer missed shifts with my 5 speed in the Miata than when I switched it to a 6 speed and never used top gear in either.

How have you been contacting V8R? I've emailed and left several voice messages but no one has ever gotten back to me. Do you have something different that what is on their website?
Carguy123
 
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Re: LFX Engine Swap (GM V6) at GWR

Postby Ryan @ GWR » Mon Dec 11, 2017 3:58 pm

Not sure on the bellhousing bolt pattern, it's a hard thing to verify without just buying transmissions from the junkyard and seeing what matches up. I've been really happy with the ratios in the 'box I have, so haven't looked elsewhere much.

I just saw Shandelle from V8Roadsters at PRI this past weekend. They've had some recent extenuating circumstances that have made replies take a lot longer than usual. I hear they're almost back on top of things, but can't hurt to shoot them another follow-up email.
Ryan @ GWR
 
Posts: 261
Joined: Fri Oct 17, 2014 11:37 pm

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