NHRA PIT STOP

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Модератори: Andre, ГОНСЧЕГ

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Andre
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З нами з: 29 жовтня 2006, 03:19
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NHRA PIT STOP

Непрочитане повідомлення Andre » 21 лютого 2007, 01:38

Think a 15-Second NASCAR Pit Stop for Gas and Tires is impressive?
Try tearing down and Rebuilding an 8,000hp Top Fuel Engine in 75 Minutes or Less.

Top Fuel drag racing is famous for vulgar displays of speed:
0-60 in half a second, a quarter-mile in less than 4.7 seconds, and top speeds excess of 325 mph.

A Top Fuel engine starts tearing it self apart as soon as the driver releases the clutch. Pistons, rods, bearings, the crank.
NHRA teams are given just 75 minutes to completely rebuild the engine, make whatever chassis adjustments they deem necessary, and get back on the line.

Top Fuel champion Clay Millican. “You have to confidence in your crew because There is literally an 8’000hp bomb sitting behind your head, and as drivers, a lot of times we are lighting the fuse”

TIMELINE
00:00 Car brought into pits; crew begins pulling carbon-fiber side panels
00:30 Tool organizer in place on top of driver’s ‘cage; plug wires and fuel lines begin coming off
01:00 Ballistic covers off engine; clutch man has puke tank removed
03:05 Valve covers off
05:00 First wheel is off; oil pan is drained and removed
06:00 Blower off
07:10 First main cap comes off
08:00 Shaft-mounted rocker-arm system off heads
08:15 Cylinder heads off
08:45 First rod cap is off
09:30 First piston and rod assembly removed from engine; cylinder- head men begin checking cylinder bores as pistons come out
10:00 Bellhousing off
11:15 Final piston/rod assemblies comes out; Miller begins replacing lower bearing shells in the main caps
13:00 Final clutch pieces come out
14:15 Lifters out
17:00 New clutch pack goes in
17:20 First of new piston/rod assemblies go back in
19:05 Last piston/rod installed; final main cap and bearing shell checked
26:20 Last main cap bolt torque’d
29:00 Bottom end buttoned up including pan
31:20 Head gasket in place
32:15 First cylinder head in place
35:00 Pushrod installed
35:30 Rocker-arm assembly bolted down
42:00 Engine oil poured through lifter valley
45:00 Belt an pulley system installed
50:30 Intake manifold in place and checked for flatness
54:30 Blower placed on intake manifold
55:00 Blower belt in place, begin lashing valves
60:00 Valve covers on
62:00 Spark plugs in and wires on
65:00 Double-check motor before warm up

LESS THAN FOUR SECONDS LATER…
AND THE WHOLE PROCESS IS REPEATED.
MSI 3000GT VR4 700HP

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