Partee Racing

06/16/2026

https://www.wsj.com/cio-journal/arcade-dev-raises-60-million-to-secure-ai-agents-5d07eff4?reflink=desktopwebshare_permalink

Proud dad I am.

The startup aims to help companies manage the challenge of determining which actions AI agents are authorized to take.

06/10/2026

Proving out a customer’s fresh E46 M3 Stroker build today at VIR! Most fun one can have with your clothes on!

05/26/2026

S62 piston perfection, manufactured by JE in accordance with our specs that have evolved over the course of a decade. Offset wristpins, asymmetric skirts, hard anodized ring grooves, 2618 alloy, Tuff Skirt coating (compatible with Alusil, of course), friction reduction grooves, lateral gas ports, 11.5:1 compression, H11 tool steel DLC coated LTW pins, Total Seal custom sized rings with DLC coated second ring, contoured tops, and so on. Lightweight, durable, and perfectly suited for everything from daily driving to hard track use. Available only with a Partee Racing S62 build.

Be well, and go fast.

—Peter

05/18/2026

Really nice note and gift from a wonderful E39 M5 customer, who saved for a year to be able to have his beast renovated by Partee Racing. Gotta love this community!

Be well, and go fast.

—Peter

05/14/2026

More custom stainless exhaust fab!

05/14/2026

Finishing up a custom stainless exhaust for an E39 M5 using HJS stainless cars (of course) and both an H-Pipe and an X-Pipe. Connected to Jedders in the front and Eisenmann Race boxes in the back. Yum.

04/25/2026

This is a great way to remove valve guides, viz., boring the ID so as to reduce the strength of the friction fit, then using the resulting internal ledge to knock the guide out by hand with no air hammer.

04/17/2026

Dive deep with Peter and Chris on our BMW Girdle Sealant Injection Tool! Available soon, only at www.ParteeRacing.com

https://youtu.be/AXogqb-9lTw

BMW S65 and S85 crank girdle sealing is one of those details that can make or break an engine build, whether you admit it or not.In this video, Peter Partee ...

04/14/2026

What exactly does Partee Racing do? We keep the last great naturally aspirated BMWs alive, and make them better than they were from the factory.

Partee Racing specializes in BMW S54, S62, S65, and S85 engine builds, engine installations and track preparation, race builds, and complete restoration projects. Our focus is preserving the engines and the cars they came in with the level of detail they deserve, which conversely allows us to (should we desire) build them in some pretty wild ways, for some pretty intense use cases.

We are not a general-service shop. We focus on serious BMW engine and chassis builds, installs, and full projects for owners who want the job done right.

Learn more at ParteeRacing.com

04/03/2026

We specialize in the last great naturally aspirated BMW motors, but we also do some very special turbo builds, such as an S63 for my friend, Tim Hallman’s M6. Tim is seeking to hit 1k WHP reliably, and our view was that could only be accomplished by adding port injection to the S63. Unfortunately, only one company makes port injection manifolds, and they are very expensive and built for the later version S63, not Tim’s earlier version.

So we made our own. Chris Knerr whipped up the design and 3D metal printed them out of Alusil. Clarke Swann welded the two pieces together, and John Ashworth machined the result to fit. I am giddy with the result and cannot wait to see what Matt Lambert can tune this up to!

Be well, and go fast.