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Torrance CA.
Friday 16th September 2011
Los Angeles based Kiwis Doug and Miriam Macmillan
again made their mark at the 63rd annual SpeedWeek, as the pair drove their
Acura RSX and Honda CRX to three new records and new personal bests at the
Bonneville Salt Flats in Utah.
Competing for her 4th year Miriam Macmillan
drove her 1990 Honda CRX, with a
turbocharged 1.5 litre engine to a new record of 220.258 mph averaged over
two runs on successive days. Miriam’s exit speed at the end of the 4th
mile of 234.6 mph (377 kph) is a personal best up from her
peak speed of 207mph in 2010 when she earned her crown as New Zealand’s Queen of
Speed. Co-driver Craig Corbin earned an equally impressive record of 222.129
with a similar ecit speed.
"My CRX has a lot more in it" said Miriam. "Had the
driver’s window not been sucked out of the car and smashed I would have run
again and continued to the 5th mile.
Doug’s co-driver Daniel Butler was first up in the
700 hp twin Rotrex supercharged 2.0 litre Acura RSX (DC5 Integra) putting an
impressive 12mph on the previous record to achieve 230.761mph. Doug’s runs were
not quite as smooth however. Switching to the fuel class by adding a 100 shot of
nitrous required taller gearing with a larger pair of front tyres. Unfortunately
the
tyres shredded at 225 mph requiring a change back to the smaller tyres. The
next run however a rod cap let go, punched a hole in the block and
set fire to the car just a few seconds before the finish. Despite all this
Doug’s RSX broke the previous record with a 232.546 mph run, the team’s fastest
timed mile for the week. Unfortunately with a blown engine the record could not
be backed up.
"The RSX with its 100 shot of nitrous was pulling very
very strongly. With better tyres and taller gearing we’ll be shooting for more
than 240 mph in the RSX next year." said Doug. "I think the CRX has the most
untapped potential though. Our goal for the CRX is to hit 250mph."
(400 kph)
Videos
Hondata CRX 4 mile run
at 234 mph.
Hondata CRX 1.3 mile run
at El Mirage May 2011
Photo Gallery
Click to link to photo
gallery.
Records achieved
| Class |
Old record (mph) |
New Record (mph) |
| CRX |
|
|
| H/BGCC |
200.152 |
222.129 |
| H/BFCC |
196.831 |
220.258 |
| |
|
|
| RSX |
|
|
| G/BGALT |
219.049 |
230.761 |
| |
|
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SCTA Record results page.
Class records are an average of two runs:
A guide to classes:
- G = 1.5-2 litres
- H = 1-1.5 litres
/B = Blown
/G = gas (spec gasoline – non oxygenated),
/F = fuel (Any fuel can be used. Our choice was nitrous oxide)
ALT = altered coupe (minor nose alterations)
CC = competition coupe (smoother nose and bellypan)
Engine specifications
| 2005 Acura RSX |
1990 RHD Japanese CRX |
| K20a 86mm by 86mm - 2.0 litre |
K20a 89mm by 61mm - 1.5 litre |
| Cunningham Rods |
Cunningham Rods |
| Darton Sleeves |
Darton Sleeves |
| CP Pistons - 9.4 compression ratio |
CP Pistons - 8.8 compression ratio |
| IPS K2 camshafts |
IPS K2 camshafts |
| ID 2000cc injectors |
Deatschwerks 1300cc injectors |
| Hondata K-Pro |
Hondata K-Pro |
| Kraftwerks intake manifold |
06 Civic Si intake manifold |
| 3" exhaust |
3" exhaust |
| Rotrex C38-91 + C30-74 supercharger |
GT35 turbo |
| 700 wheel Hp at 9600 RPM (800 with nitrous) |
680 wheel HP at 9600 RPM at 32 psi |
| 232 mph at 9400 rpm |
236mph at 9200 rpm |
Sponsors and contributors
Many thanks to our team, sponsors and contributors.
Team:
Doug and Miriam Macmillan, Daniel Butler, Craig Corbin, Alan Pinho, Sterling
and Rene Anderson, Diogo Oliveira.
RSX
CRX
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