We may receive a commission on purchases made from links. I have been working on my own vehicles for almost 40 years and in that time have accumulated a sizable collection of tools. The bulk of them ...

With every passing day the Mule provides opportunities beyond our original expectations. Since the 467ci engine belongs to HPP editor Tom DeMauro, it is at our beck and call. This affords HPP the ...

You've probably heard racers talking about leakdown testing as a method of verifying engine condition. Being a hot rodder, you've probably performed a similar function by using a compression tester to ...

Mercedes could come out on the losing side of a critical vote regarding the engine regulations as other power manufacturers ...

A political firestorm has been brewing in Formula 1 in recent weeks and months over whether engine manufacturers have found a loophole in the new 2026 technical regulations.

F1 teams expect to get clarity on compression ratio saga very soon ...

The legality over the Mercedes compression ratios – which measure how much the air-fuel mixture inside an engine cylinder can be compressed – has been of hot debate during F1 2026 pre-season ...