BoP Lab / Michelin Raceway Road Atlanta

ITB + FM at Michelin Raceway Road Atlanta

Pos	Car	Driver	Class	#	Lap	Theoretical	Qual	Race	5-lap stint	Consistency	Trap	S1	S2	S3
1	Star Formula Mazda	Robert Noell	FM	27	1:30.928 H-R1	1:30.766	1:31.843 H-Q2	1:30.928 H-R1	1:31.468 H-R1	+1.094 H-R1	132.5 H-R1	34.975 H-R1	32.525 H-R1	23.266 H-R1
2	Star Formula Mazda	Brad Yake	FM	24	1:31.108 H-R1	1:30.907	1:32.356 H-Q1	1:31.108 H-R1	1:31.617 H-R1	+0.964 H-R1	126.3 H-R1	34.371 H-R1	32.894 H-R1	23.642 H-R1
3	Datsun 200SX	Ron Fuller	ITB	68	1:59.654 G-Q1	1:59.408	1:59.654 G-Q1	2:00.725 G-R2	2:02.195 G-R2	+2.720 G-R2	98.0 G-Q1	45.472 G-Q1	43.429 G-Q2	30.507 G-Q1

One row per driver and car (a driver who changed cars has a row for each). Each cell is that driver's best in that car across the selected events, with the session it was set in. Best 5-lap stint is the mean of the driver's quickest five consecutive race laps, and consistency is how far their median race lap sat behind their best in that race (small is a driver who does it every lap); both come from the race with the best stint. The fastest in each column is purple, and a car whose best lap is more than 115% of the fastest in its class is greyed (marked ">115%" beside the driver) and left out of the colour scale. Click a column to sort, a row to highlight it. Theoretical lap is the sum of the best sectors, whichever laps they came from, and never slower than the best lap (where a car's fastest laps were recorded without sector times, its best lap is used). The 115% mark is about the car's best lap only: a car whose best lap is within 115% of the fastest in its class is never marked. Greyed sectors with no theoretical lap mean the sector times on file do not add up to a believable lap. Letters refer to the events above; Q is qualifying, R a race.

Sectors

S1 SF → IM1
S2 IM1 → IM2
S3 IM2 → SF
SPd IM2 → IM3 0.02 mi

Sectors are numbered in lap order from start/finish, whatever each event's timing called them; the loop names are SCCA timing's.

By car

Car	Class	Drivers	Lap	Qual	Race	Trap	S1	S2	S3
Star Formula Mazda	FM	2	1:30.928Robert Noell	1:31.843Robert Noell	1:30.928Robert Noell	132.5Robert Noell	34.371Brad Yake	32.525Robert Noell	23.266Robert Noell
Datsun 200SX	ITB	1	1:59.654Ron Fuller	1:59.654Ron Fuller	2:00.725Ron Fuller	98.0Ron Fuller	45.472Ron Fuller	43.429Ron Fuller	30.507Ron Fuller

The best any driver of each car managed across the selected events, with who set it. Spellings and model years of the same car are grouped; click a row marked ▸ to see each version. Grouping is worked out from the names, so tell us if two cars are wrongly merged or split.

Rule changes between these events

Atlanta Region 2019 → SARRC 2020 2019-03-15 to 2020-07-25

2019-05-01 ITB Request clarification on 9.1.3 D1.A.2

#26237 from PRH Stark · Rule change · TB 19-05 (2019-05 Fastrack)

Summary

wordingIT classes renumber intake and fuel system rules under 9.3.1.D.1, clarify throttle linkage and electronic throttle restrictions.

As printed in Fastrack

In GCR section 9.1.4.D.1 make changes and renumber as follows:
9.3.1.D.1. Reciprocating Engines (only)
~~a. All air entering the intake tract shall pass through the carburetor or fuel injection air inlet~~
~~(throttle body or bodies). All air must also pass through the stock air metering device, eg~~
~~MAF, or AFM, etc if so equipped. Air intake source shall be within the confines of the engine~~
~~compartment or stock location. (previously D.1.a.4)~~
4. a. All air entering the intake tract shall pass through the carburetor or fuel injection air inlet
(throttle body or bodies). All air must also pass through the stock air metering device, eg

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MAF, or AFM, etc., if so equipped. Air intake source shall be within the confines of the engine
compartment or stock location.
3. b. The original, standard intake manifold shall be maintained. No porting or polishing of the
manifold is permitted except as allowed by ~~rule D.1.I~~ these rules.
c. Carbureted engines
a. 1. Any carburetor jets, needles, and/or metering rods may be used in the stock or
approved optional carburetor(s). Alternate needle valves are permitted. Removable
jets may be replaced or resized. The number of carburetors may not be changed
from standard. No venturi (including secondary or auxiliary) of any carburetor may be
modified in any way.
1. 2. Certain cars have optional carburetors listed. On these cars, adaptor(s) may be
used to mount the optional carburetor(s), provided the adaptor serves no performance
function, i.e., plenum chamber, etc.
2. 3. External throttle linkage to the standard or optional carburetor(s) may be modified
or changed. Choke mechanisms, plates, rods, and actuating cables, wires, or hoses
may be removed. Method of operating the secondary throttle may not be modified.
(previously D.1.a.2)
5. 4. All single carbureted cars may fit an approved optional carburetor. Approved
optional carburetors are:
1 Weber 32 DGV/DGAV/DGEV
1 Weber 32/36 DGV/DGAV/DGEV
1 Weber 32/36 DFV/DFAV/DFEV
1 Weber 34 DAT/DATR/DATRA/DMTR
1 Holley-Weber 5200
Weber carburetor(s) with swaged fuel inlet fitting shall be replaced by drilling and
tapping the carburetor body for a threaded fitting. Fuel injection manifold(s) shall not
be replaced with carburetor manifold(s) from a different model, type, or engine size
in order to fit an optional carburetor. All cars equipped with multiple carburetors shall
run the original induction system, except for modifications allowed by the Authorized
Modifications Sections ~~D.1.a., and D.1.a.2.,~~ above in these rules.
d. Fuel injected engines
6. 1. The engine management computer may be altered or replaced. A throttle position
sensor and its wiring may be added or replaced. A MAP or MAF sensor and its wiring
may be added. Other existing sensors, excluding the stock air metering device, may be
substituted for equivalent units.
~~2. External throttle linkage to the standard or optional carburetor(s) may be modified or~~
~~changed. Choke mechanisms, plates, rods, and actuating cables, wires, or hoses may~~
~~be removed. Method of operating the secondary throttle may not be modified.~~
2. External throttle linkage may be modified or changed. Electronic control of the
throttle is forbidden unless fit as stock. The method of operating any secondary throttle
may not be modified. Electronically actuated throttle bodies may not be replaced by
mechanical units unless specified on the vehicle’s spec line. Requests for alternate
throttle bodies will be considered on a case by case basis.
6. 3. The engine management computer may be altered or replaced. A throttle position
sensor and
its wiring may be added or replaced. A MAP or MAF sensor and its wiring may be
added. Other
existing sensors, excluding the stock air metering device, may be substituted for
equivalent
units.
7. 4. Wires and connectors in the engine wiring harness may be modified or replaced.

2019-08-31 ITB Request clarification 1999 Ford Escort ZX2 S?R

#26966 from LARRY FREY · Rule change · TB 19-09 (2019-09 Fastrack)

Summary

fasterITA Ford Escort ZX2 year range extended to 2003, minimum weight reduced to 2355 lbs.

As printed in Fastrack

In ITA, Ford Escort ZX2 (98-00), change the year as follows:
“(98-00 03)”
In ITA, Ford Escort ZX2 (98-00 03), change the weight as follows:
"~~2400~~ 2355"

2019-08-31 ITB Request to allow 07-11 Mini in ITB as BPSEC configuration

#26997 from Alex Ratcliffe · Rule change · TB 19-09 (2019-09 Fastrack)

Summary

cars addedITB Mini Cooper extended to 2013 model year, allowed in B-Spec or IT specification with respective weights.

As printed in Fastrack

In ITB, Mini Cooper (07-10), make changes to the spec line as follows:
“(07-10 13)”
"May be run in full compliance to B-Spec configuration and weight or to IT specification and weight."

2020-05-01 ITB Cleanup 4.f Traction control

#28609 from Improved Touring Committee · Rule change · TB 20-05 (2019-05 Fastrack)

Summary

wordingImproved Touring traction control no longer requires disconnecting three wheel speed sensors, just disabled.

As printed in Fastrack

In Improved Touring, GCR section 9.1.3.D.4.f, change as follows:
"~~Traction control, if available, must be disabled by disconnecting or removing a minimum of three wheel~~
~~speed sensors.~~ Traction control must be disabled."

What the rules allowed changed as listed; this does not say what any particular car ran.