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I'm shooting for TT4 with my K Swap, and I know I'll be down on power compared to the pointy end cars, but it's good to see a K Miata being competitive.
thanks! Wasn’t what I was hoping for(class leading xT5 car on debut), but still showed good future potential.
to be fair, the Club Course ST4 record is a 36.2, so I was over two seconds off pace from my PB. There IS a pretty clear path to the front IMO, but it’s is not exactly my current build. You’d want to plan for a splitter and no detune, potentially even e85 and some ballast to really find the certain breakpoints in the rules.
This engine vibrates like crazy and I may never get used to it.
This engine loses power with oil temp like crazy and I need to address it
After dealing with a buzzy BP for several years, I thought I would be well prepared to deal with the K. I was not.
Now, every bolt that's not torqued gets safety wired or a dab of blue locktite. Intake and exhaust manifold bolts are the prime culprits for going AWOL, but even steering rack bolts have rattled themselves loose.
Can you expand on what kind of power losses you were seeing with oil temps?
Can you expand on what kind of power losses you were seeing with oil temps?
No data, only my own first hand "feelings" and tips/feedback from the GLTC crew.
I do not have an oil temp gauge, and am relying on the stock miata coolant temp gauge being fed by the honda CLT/Hondata.
The sound changed by the 3rd hot lap every single session, whether warm up, TT or in the race. Some of this could be the way my tuner did the VTC for the attempt at ~1krpm of flat power, but the FEELING of the engine was weird when it was hot.
There is a hill coming up out of "Thunder Valley" at Mid Ohio that I stopped being able to accelerate up by the middle of the race. The car would just hold rpm. I was convinced I had spun a bearing or something and came in early before the checkered flag a couple times on Saturday only for the oil to be spotless and the engine perfectly happy again 45 mins later.
I can say that's definitely not normal behavior. If you were DBW and using throttle blade position to detune I would blame that, but as you're still cable driven I'm not what sure to make of that.
For reference, I never had an issue running 20-25min sessions when N/A, even in the heat of the south east summer and 100° track temps.
Nope. Never seen the oil anywhere near hot enough to need one. Redline currently at 7600 because turbo things, when N/A I ran it at 8/8200. Never any oil temp concerns, never any signs/smells of burned oil during changes.
Perhaps need to measure oil temps? Oil in a modern engine isn't just for keeping bearings alive, but also used as the hydraulic fluid to control valve systems etc, so the temp going high (120C+) might not be a problem for the oil to support the bearings, but it might cause the kinematic viscosity to be outside of the range that the VVT controller can compensate for.
I run a very similar intake setup on my NA k24z3, have not seen issues with IAT. No oil cooler. Running 39-40s on the pro course. Also have a buddy who runs a NB same intake setup no issues also, no oil cooler on his. Both of us are just doing HPDE though so not being tucked behind other cars for the most part.
You stopped by and checked out our cars at NASA great lakes mid o event last year if you remember.
Its definitely not an IAT issue. There was no IAT drift on the 4 hour dyno day, but i do not have any data from the track. I have the headlight cut with a hood louver right over the filter for constant ambient airflow all around the intake/sensor. The plastic sensor is also mounted in the silicone elbow, so there should be way less heatsoak than if any if it was metal.
Ideally I would have run some datalogs, but my thinkpad doesn't like communicating to the ecu, so i couldnt even get in to turn on datalogging, let alone retrieve the data. I have most of the parts on hand to assemble an oil cooler, so i'm gonna do that for piece of mind anyways.
New year. Gotta change up something to stay excited about it haha.
“Modelo Drive” Garage Vary replica from eBay. It’s an ST4/GLTC idea, as it’s super duper grey area for ST5, even with my ideas on how to cut/shave/airdam-away those “canards”
New year. Gotta change up something to stay excited about it haha.
(pic)
“Modelo Drive” Garage Vary replica from eBay. It’s an ST4/GLTC idea, as it’s super duper grey area for ST5, even with my ideas on how to cut/shave/airdam-away those “canards”
Excited for this, not a fan of the air dam look even though I run one. I have an ebay bomex copy bumper I've been tinkering with but I ran out of gumption and/or fiberglass.
New year. Gotta change up something to stay excited about it haha.
“Modelo Drive” Garage Vary replica from eBay. It’s an ST4/GLTC idea, as it’s super duper grey area for ST5, even with my ideas on how to cut/shave/airdam-away those “canards”
Not feeling it. Rad opening 3x as big as needs to be, more aero drag. Probably heavy. I know the OEM bumper and HDPE air dam is boring, but it works.
Few things happening lately.
Got the bumper trimmed for radiator blockoffs, sanded, wiped with acetone, primed, sanded, wiped with acetone, painted 3 coats... Also cleaned the headlights to get the old orange vinyl off. That was also a multistep process of googone, plastic razor blade, glass cleaner, etc... only to then circle back wrap the gutted drivers side intake-light in more carbon vinyl.
55+f and sunny on friday for paint day. Snowed 3" overnight and was 45+ and sunny today again. Drove it around the block today! Wild.
I got the holes drilled and physically mounted yesterday. I'm super happy with how its turning out. Cracked one of the ears by the drivers headlight even with a ton of clearancing with a rasp and trying not to force/bend it all into place.
It definitely needs support from underneath, so my splitter/undertray arrangement is gonna have to carry some weight from underneath/behind the bumper.
Not as much tire shrouding as I hoped for, this is a 245/40 RT660 on 9.5”. I have ideas for spats if I make the jump to ST4, and am hopeful that my new splitter mounts make it really easy to add a different splitter/undertray under each bumper.
08-29-2023, 05:52 PM
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