Masters HR already regulate the rev limits in Historic F1, World Sportscar Masters and V8 engines in Pre ‘66 Touring Cars, but for 2018 the last category will now have rev limits across the board. For over 3 litre engines, 7000rpm, smaller units 8000rpm. As with WSM, MSD 6AL ignition control units will be required to be fitted, and apparently will be sealed. Not clear as to how the rev limit is checked however.....
To help competitors with the extra expense, DT will supply the MSD units at 15% discount, and Masters will match this in the form of a credit against race entry costs. The 2018 regulations are now available on Masters website-
http://www.mastershistoricracing.com/championships/
Will be interesting to see if the performance of smaller engined cars is affected, but it’s suggested that the emphasis is on controlling build and rebuild costs.
Peter Auto have also introduced rev limits for Classic Endurance Racing entries, using the same control unit, plus a limit of 2 engines per season (sealed), so there appears to be a theme......