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Old 7 Feb 2018, 20:03 (Ref:3799387)   #1
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Masters Announce more rev limits plus.....

Masters HR already regulate the rev limits in Historic F1, World Sportscar Masters and V8 engines in Pre Ď66 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 itís 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......
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Old 7 Feb 2018, 21:07 (Ref:3799393)   #2
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Masters HR already regulate the rev limits in Historic F1, World Sportscar Masters and V8 engines in Pre Ď66 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 itís 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......
Is that 2 engines per season per car or two engines per season per driver? (Or per driver per car?)
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Old 8 Feb 2018, 06:25 (Ref:3799472)   #3
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Is that 2 engines per season per car or two engines per season per driver? (Or per driver per car?)
The first. Two engines per car per season....
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Old 8 Feb 2018, 06:59 (Ref:3799474)   #4
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Right Mike, not only CER but HTC too.
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Old 8 Feb 2018, 07:08 (Ref:3799475)   #5
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Right Mike, not only CER but HTC too.
Yes, for HTC also. I was only thinking CER as had just been sent pics of the new FVC for the B19. Too pretty to shove in a motor car, even a pretty one......
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Old 8 Feb 2018, 08:33 (Ref:3799481)   #6
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zefarelly should be qualifying in the top 5 on the gridzefarelly should be qualifying in the top 5 on the gridzefarelly should be qualifying in the top 5 on the grid
That would certainly affect U2TC cars if it were introduced.

most of them don't do anything until they get above 7000 now.
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Old 8 Feb 2018, 09:20 (Ref:3799486)   #7
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As to HTC dont think it will really affect anyone. Some using 2 machines, will be allowed 4 engines! And they dont specify if refurbishing is also concerned. As suggested by Mike, how will the MSD pack will cope with points and condenser systems? Does the appendix K allows rev limiters for all categories? May be the end of this old rule?
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Old 8 Feb 2018, 09:30 (Ref:3799489)   #8
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The 2 engine per season ruling....I wonder how they are going to enforce this?

I presume they have bought it in to stop the Quali spec and race spec engines, and/or new engine every event, but won’t it clobber those honest folk who have chronic bad luck and there single engine has to be rebuilt more than once during the season.....are they really going to be turned away from events?


I am pretty sure appx k states you can’t use rev limiters too.....

Confused of Camberley!
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Old 8 Feb 2018, 10:42 (Ref:3799503)   #9
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The first. Two engines per car per season....
So the spot price value of the car, potentially, falls as the season passes and it uses up its "engine allowance" for the year?

Does a car that starts the year with last year's engine still have 2 engines in hand or does what planned life is left in last year's engine count as one engine for this year?

I would have thought that economics (for the maintainers perhaps, rather than the owners but still ....) would suggest not a limit per se but a penalty for exceeding the limit. Effectively an "indulgence" payment whether financial, points (in the championship rounds) or grid/laps penalty.

Ditto rev limits.

There must come a point where for technical reasons it would be better to simply record engine revs and penalise excess in some way without compromising existing build regulations and older technology.

All of that said one has to wonder why these sorts of rules are found to be necessary in a hobby sport mainly supported by enthusiasts.
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Old 8 Feb 2018, 11:03 (Ref:3799508)   #10
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App K
6.5.2 An electronic rev limiter may be used from Period F onwards.
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Old 8 Feb 2018, 12:35 (Ref:3799532)   #11
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That would certainly affect U2TC cars if it were introduced. most of them don't do anything until they get above 7000 now.
Yes, but.... Will a Louts twincam be more compromised than a BMW Tisa? Will a Mini be more compromised than an Alfa by the rev limit?

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So the spot price value of the car, potentially, falls as the season passes and it uses up its "engine allowance" for the year?

Does a car that starts the year with last year's engine still have 2 engines in hand or does what planned life is left in last year's engine count as one engine for this year?
This is copied from CER regs, but doesn't answer all the questions posted above..... "Engines are limited to two for the season. A sealing and identification of each engine will be made at the beginning and throughout the season. Checks will be made to make sure the rule is enforced. Any competitor failing to stay within the rule will see 40 points taken off the season classification as a penalty. Teams shall drill screws and nuts which removal is necessary during an engine rebuilt (see picture). Car should be presented with the lead seal fitted during the first participation of the season or the first race after the engine rebuilt or replacement."


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All of that said one has to wonder why these sorts of rules are found to be necessary in a hobby sport mainly supported by enthusiasts.
Err, you're forgetting the 'Arms Race'............
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Old 8 Feb 2018, 12:42 (Ref:3799536)   #12
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I dont think it will affect the true enthusiasts who are limited by their wallet or common sense!
Not the same effect on all categories though, U2TC as you say and really small displacement like 1.3 litre or less.
There are two different classic racing worlds, one for the pros and another for the amateurs/ enthusiasts. I can't see any inconvenient to that, was already the case in period.
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Old 8 Feb 2018, 13:49 (Ref:3799553)   #13
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I didn't look close enough at the Masters rev limit initiative! It is being applied to some of the Gentleman Drivers Grid as well. Quoted below-

7.5.1 The RPM limit on all cars will be restricted as per 7.5.3 unless the engine type used is not listed therein. Only the use of an MSD 6AL ignition control (ref: MSD PN 6425) is permitted to control the RPM. The permitted ignition control must be fitted well out of reach of the competitor/driver.

7.5.2 Any control of the advance curve must only be RPM related. It must be executed solely by means of the distributor. No external control of the advance system is permitted. MSD ignition boxes that control advance or allow advance mapping are not permitted.

7.5.3 REV Limits:

V8-engines – 7000rpm
Twin-cam engines – 8000rpm
Jaguar straight-six engines – 6500rpm
Austin Healey 3000 – 7000rpm

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Old 8 Feb 2018, 15:31 (Ref:3799590)   #14
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Oups, Escort vs Capri Westlake or GAA will be a hard fight. Nothing about Astons? No external control of the advance is a good thing.
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Old 8 Feb 2018, 15:59 (Ref:3799600)   #15
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Oups, Escort vs Capri Westlake or GAA will be a hard fight.

Nothing about Astons? No external control of the advance is a good thing.
Ref cars in bold above- Not a problem in Gentleman Drivers, as its Pre '66 GT! (Apologies if I misunderstand your comment )

As far as Aston's are concerned, don't think there many to be seen in GD. I guess if one starts beating cars it shouldn't then a rev limit will be applied to them as well
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