JPS Motorsports Electronics

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JPS Motorsports Electronics Performance Engine Calibration services, Consulting on Engine design, Builds, Custom fabrication

08/10/2026



Got all the slugs in today, rings gapped 0.019/0.025".  Fitting an adjustable Tomei oil pump was a mission, grinding the...
12/09/2026

Got all the slugs in today, rings gapped 0.019/0.025". Fitting an adjustable Tomei oil pump was a mission, grinding the notch off the block was the last thing i wanted to do with the bottom end assembled. Definitely keep that in mind for next time!!

Always have all your parts for the pre-build on-hand !!!

Pretty happy with the mains on the Dirty3's custom stroker crankshaft engine build. Measured perfect on the verniers, an...
05/09/2026

Pretty happy with the mains on the Dirty3's custom stroker crankshaft engine build. Measured perfect on the verniers, and double checked with the visual plasti-gauge! smotorsports

Time to build this custom designed stroker for the RB30/34 circuit engine. This stroker uses ultimate X-Beam connecting ...
24/07/2026

Time to build this custom designed stroker for the RB30/34 circuit engine.

This stroker uses ultimate X-Beam connecting rod design, a knife edged crank to reduce windage and reciprocating weight to lift the harmonic rpm ceiling past the oil pump smashing 7500rpm.

Scanpan handle .. not much chop when comes to cutting nougat treat!  either way a spare piece of Ally can fix it :)
30/05/2026

Scanpan handle .. not much chop when comes to cutting nougat treat! either way a spare piece of Ally can fix it :)

Time to build another big block RB twin cam Franksenstein V2 for the RDirty3.  Starting at the bottom with a high capaci...
17/11/2025

Time to build another big block RB twin cam Franksenstein V2 for the RDirty3. Starting at the bottom with a high capacity sump (we still have a little conrod panel beating to repair) and work our way up. They can never have enough oil !!
Keep an eye out for step two, the custom crank grind that we just finished the drawings for.

Skyline RB LS2/7 coil pack upgrade complete. Eliminates Heat build up, inaccurarte timing adjustments, old brittle wirin...
12/06/2025

Skyline RB LS2/7 coil pack upgrade complete. Eliminates Heat build up, inaccurarte timing adjustments, old brittle wiring and high boost misfires, many more coil pack brand choices.

testing the repair of the R33 skylines wing brake light.
16/05/2025

testing the repair of the R33 skylines wing brake light.

Time for some fatties for the starlet project "Paddington"!!
10/08/2024

Time for some fatties for the starlet project "Paddington"!!

WARNING *** this design may leak fuel causing harm or fire.installed in a return line under minimal pressure, the mounti...
17/07/2024

WARNING *** this design may leak fuel causing harm or fire.
installed in a return line under minimal pressure, the mounting bracket bolts holes over drilling break through in to the bypass flow tube causing leakage. if installed under pressure, can be very dangerous. see photos of protrusions that had approximately a 2mm surface area leak past the mounting threads.

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Campbelltown, NSW
2560

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