Thunders wrote:This is copy-pasted from the User WitnessX over at the Autosport Forum MP4-30 Thread. They are having the same discussion.
5.22 Replacing power unit parts :
Refer to the table in Appendix 2 of these regulations.
The parts listed as “EXC” in the table referred to above may be changed without incurring a penalty under Article 28.4 of the F1 Sporting Regulations. If changing any of these parts involves breaking a seal this may be done but must be carried out under FIA supervision. Any parts changed may only be replaced by parts homologated in accordance with Appendix 4 of the F1 Sporting Regulations.According to the tech. regulations...
(see Appendix 2 first table, column "5.22 Seal Perim")
http://www.fia.com/sites/default/files/ ... -12-03.pdf
My understanding is that if it is excluded then they just have to declare the re-designed item as the current homologated part (whether it's token or via reliability is irrelevant).
AFAIK the rules do not restrict on using PU parts consecutively so they can use their allotment ad-hoc throughout their year. This means they can decide use another ICE whenever they want and use the old one for just Friday practices for example.
So they should be able to make improvements without having Penalties. I'm sure they won't make the 4 PU Limit but that could make it a lot less worse.
I'll list the exclusions:
-Wastegate, Pop-off valve or similar
-PU Engine air inlet system from plenum entry to cylinder head (e.g. plenum, trumpets, throttles)
-PU exhaust system from the engine exhaust flange up to but not including the turbine or wastegate exit tail-pipe
-PU mounted fuel system components: (e.g. High Pressure fuel hose, fuel rail, fuel injectors, accumulators)
-PU mounted electrical components (e.g. wiring loom within legality volume, sensors, actuators, ignition coils, alternator, spark plugs)
-All PU coolant pumps, oil pumps, scavenge pumps, oil air separators and fuel high pressure pumps (delivering more than 10bar) including any of the following associated components: motors, actuators, filters, brackets, supports, screws, nuts, dowels, washers, cables, oil or air seals. All tubes or hoses between components of the PU that are not described by line 26. Excludes hydraulic pumps and ERS parts described in line 9.
-Cooling pumps (and associated motors, actuators, associated filters, brackets, support, screws, nuts, dowels, washers, cables, tubes, hoses, oil or air seals) partly or wholly for ERS components not mandatorily included in the PU legality volume.
-Main PU oil tank, catch tanks, and any breather system connected to them and associated filters, brackets, support, screws, nuts, dowels, washers, cables, tubes, hoses, oil or air seals
-MGU-K mechanical power transmission components and mounting accessories
-MGU-H mechanical power transmission components and mounting accessories
-ES excluding parts defined in Article 5.4.3
(5.4.3 The total weight of the part of the ES that stores energy, i.e. the cells (including any clamping plates) and electrical connections between cells, must be no less than 20kg and must not exceed 25kg)
-Wiring between any ECU and phases of MGU-K
-Wiring between any ECU and phases of MGU-H
-Wiring between ECU and ES
-Brackets, supports, screws, nuts, dowels, washers or cables associated to the parts listed in line 20.
(Line 20 Any ECU or associated device containing programmable semiconductors or containing high power switching devices. This includes, but is not limited to, MGU-K control unit, MGU-H control unit, injector control unit, ignition control unit, voltage regulator, intelligent sensors and actuators containing complex electronics. This excludes associated brackets, supports, screws, nuts, dowels, washers or cables. Excludes Standard ECU and FIA sensors.)
-Standard ECU.
-Any actuators needed to make the PU function at all times. (except specific exclusions)
-Intake upstream of compressor inlet up to and including the air filter.
-Heat Shields and associated mounting hardware.
-Water system accumulators
-Heat exchangers and their associated accessories. (included but not limited to tubes, hoses, supports, brackets and fasteners)
-Hydraulic system (e.g. pumps, accumulators, manifolds, servo-valves, solenoids, actuators) other than servo valve(s) and actuator(s) for PU control.
-Hydraulic system servo valve(s) and actuator(s) for PU control.
-Fuel feed pumps delivering less than 10 bars and their associated accessories (included but not limited to tubes, hoses, supports, brackets and fasteners).
-Any ancillary equipment associated with the PU air valve system such as regulators or compressors.
-Exhaust beyond turbine exit and WG exit and associated brackets, support, screws, nuts, dowels, washers or cables.
-Studs used to mount PU to chassis or gearbox.
-Flywheel, clutch and clutch actuation system between the PU and the gearbox.
-Liquids.
-Ballast mounted on the PU up to 2kg. This is permitted (subject to Article 4.4) but any in excess of 2kg will be removed before measuring PU weight.
-Ballast mounted on the PU in excess of 2kg.
-Wiring harnesses which are not ordinarily part of a power unit.
In short and in general, the core pieces of the PU aren't allowed to be normally changed. Thinks like pumps, reservoirs, wiring, supports, actuators, etc. are.
