Partee Racing

10/10/2026

https://youtube.com/shorts/9-j-mbfOMyg?si=HyWbpM7t1J5fQSBX

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10/10/2026

Love this!

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10/04/2026

Celebrating the best 18 years of my life! I can’t believe she STILL chooses me! But I’m immensely grateful every day that she does!

09/25/2026

Our finalized exhaust mid-section for the E39 M5, replete with high flow HJS stainless cats, custom H-pipe to eliminate rasp and drone, and a custom x-pipe to equalize and maximize flow, all in beautifully TIG-welded and back-purged stainless 304. Now an off-the shelf product from Partee Racing for $7500. Can be customized, as here, for Dinan headers or with V-bands for Jedders.

Be well, and go fast.

—Peter

09/20/2026

We left Matt unsupervised.

We are not ready to explain this yet.

Feel free to make assumptions.

08/22/2026

Another philosophical reflection borne of engine work. (Pic solely for attention.)

Engines obey strict physical laws. That makes them predictable: If built the same way, broken in the same way, and tuned the same way, they will perform the same way in the same environmental circumstances (within a stated margin of error).

Testing an engine on an engine dynamometer strips away all of the other variables that apply when the engine is installed and operated in a car. Repeatability, engine after engine, all built the same, perform the same, reliably, time and time again. It is amazingly emotionally comforting to have that epistemological certainty, to see physical laws at work and never changing. It instills an unprecedented peace in me.

Not so with people. You can know someone deeply or even intimately for most of your life and fail to predict accurately how they will act or respond in a given circumstance. Even if they have acted in accordance with a well-established disposition many times previously, they may very well act differently the next time. And sometimes, that’s because the person has changed, but sometimes is just because the person was weak (or strong) on a given occasion. With a human being, the variables are overwhelmingly numerous and diverse, and having to w**d through that epistemological thicket is the very core of skepticism. It is for me the strongest root for the neighboring trees of relativism and nihilism.

Struggling to conform people to an engine-like physical law is sheer folly and leads nowhere fast. All one can do is accept the inherent variability, recognize the old Biblical adage that some things are not within our power to control, and move on. Perhaps even revel in the diversity, however painful it may be on a given occasion. Like the shepherd biting the head of the serpent and the laughing hysterically in Thus Spoke Zarathustra, the movement has to be one of sheer will, solely from within.

Just a few meanderings on a decidedly psychologically unpeaceful Saturday morning away from the shop.

Be well, and go fast.

—Peter

PS: For the Kripke fans out there, note the inherent difference in the skepticism I outline above about predictions of personal action, on the one hand, and Kripke’s putative skepticism about how we know that X+X=2X for all rational values of “X”, on the other hand.

08/18/2026

Quick preview of our recently revamped Partee Racing engine dyno! The first engine? Our 4.591L stroked BMW S65, which put down 545BHP. Our second engine? Another 4.591L stroked BMW S65, which put down 560BHP!

07/31/2026

Just wrapped up engine dyno tuning one of our 4.6 liter S65 strokers with 12.5:1 compression using a Motec M190. 545bhp, and I personally believe it has a tad more in it! Congratulations to Matt Lambert for such an amazing result creating this Motec tune from absolute scratch, and to Chris Knerr for figuring out S65 vanos control on the Motec. Another identical engine in the queue!

Be well, and go fast.

—Peter

07/23/2026

Just a sampling of today’s head and valve work! Can imagine a better job than building engines! Well, racing.

07/11/2026

Topped off Mr. Darling’s spectacular track/street E46 M3 build with a CF vented hood and hood pins. The hood pins use brackets in the stock latch location that are completely reversible if Don ever chooses to reinstall his stock hood. Oh and just had to paint that Rogue Engineering strut brace to match the exterior paint. Just had to

—Peter