B-Spec Radiator Replacement
#39728 from Charles Davis · Not recommended · Minutes (2026-03 Fastrack)
The committee does not recommend allowing alternative radiators that bolt directly into the core support without any
modification at this time.
BoP Lab / Drivers / Charles Davis
| Track | Class | Sessions | Typical gap to class best | Closest |
|---|---|---|---|---|
| Hallett Motor Racing Circuit (1.80 mi) | B-Spec | 4 | +5.653s (6.09%) | +4.595s (4.96%) |
Gap is the driver's best lap in a session against the fastest lap in their class in that same session (zero is fastest in class), shown as time lost and as a share of the lap, so conditions cancel out and tracks can be compared. Typical is the median session.
| Event | Session | Class | # | Car | Pos | Best lap | Class best | To class best | Trap | Class trap | To class trap |
|---|---|---|---|---|---|---|---|---|---|---|---|
| AVRG Green Country Grand Prix 2023 | Grp 6 EP, FP, HP, GTL, B-Spec Race 2 | B-Spec | 124 | Honda Fit | 4/5 | 1:37.246 | 1:32.651John Phillips | +4.595s (4.96%) | 85.35/5 | 89.8John Phillips | -4.6 mph (-5.1%) |
| AVRG Green Country Grand Prix 2023 | Grp 6 EP, FP, HP, GTL, B-Spec Qual 2 | B-Spec | 124 | Honda Fit | 5/5 | 1:38.469 | 1:32.816John Phillips | +5.653s (6.09%) | 85.05/5 | 89.4John Phillips | -4.4 mph (-4.9%) |
| AVRG Green Country Grand Prix 2023 | Grp 6 EP, FP, HP, GTL, B-Spec Race 1 | B-Spec | 124 | Honda Fit | 5/5 | 1:39.677 | 1:33.152John Phillips | +6.525s (7.00%) | 84.05/5 | 89.7John Phillips | -5.7 mph (-6.3%) |
| AVRG Green Country Grand Prix 2023 | Grp 6 EP, FP, HP, GTL, B-Spec Qual 1 | B-Spec | 124 | Honda Fit | 4/3 | 1:34.154John Phillips |
#39728 from Charles Davis · Not recommended · Minutes (2026-03 Fastrack)
The committee does not recommend allowing alternative radiators that bolt directly into the core support without any
modification at this time.
#36187 from Charles Davis · No action required · Minutes (2024-08 Fastrack)
Thank you for your letter. Please supply data to the committee to support your request.
#34880 from Charles Davis · Not recommended · Minutes (2024-04 Fastrack)
Thank you for your letter. Competitive as classified.
#34299 from Charles Davis · Not recommended · Minutes (2023-06 Fastrack)
Thank you for your letter. Please see response to letter #34062 in current Fastrack.
#32485 from Charles Davis · Not recommended · Minutes (2022-10 Fastrack)
Thank you for your letter. We continue to monitor the data reports provided by the SCCA and makes adjustments as
necessary. The current BOP is acceptable as written.
#31812 from Charles Davis · Not recommended · Minutes (2022-02 Fastrack)
Thank you for your letter. BOP changes are being studied based on data from the 2021 Season and the runoffs. More
information to follow.
#31384 from Charles Davis · No action required · Minutes (2022-01 Fastrack)
Thank you for your letter. Please see letter #31359 in current Fastrack.
#30963 from Charles Davis · Taken care of · Minutes (2021-12 Fastrack)
Thank you for your letter. Please see response to letter #31561 in current Fastrack.
#30755 from Charles Davis · Not recommended · Minutes (2021-08 Fastrack)
Thank you for your letter. This is not in line with the intention of the class. The cars are to remain stock and if aftermarket parts
are needed for reliability, performance or access reasons they should be requested and added to each spec line.
#30286 from Charles Davis · Taken care of · Minutes (2021-04 Fastrack)
Thank you for your letter. Please see letter #30387 in current Fastrack.
#30220 from Charles Davis · Taken care of · Minutes (2021-04 Fastrack)
Thank you for your letter. Please see letter #30387 in current Fastrack.
#27611 from Charles Davis · Taken care of · Minutes (2020-01 Fastrack)
Thank you for your letter. We will have bop adjustments soon. We are doing some dyno testing and
then they will be released.