The Few, the Proud, the Raiders : Pro football: Los Angeles is now one of only four unbeaten teams after a 24-10 victory over Chicago at the Coliseum.

Three weeks after A.D. (Al’s decision), the Raiders have dropped their bags at the Coliseum’s door step and learned to love the place. OK, it needs some work and half a police force to secure it, but you should see it when people show up. Sunday, a crowd of 80,156 (80,037 after 31 arrests and 88 ejections) nearly filled the place and cheered the Raiders to a 24-10 victory over the Chicago Bears.

In what some considered a watershed event after three close-shave victories over teams with non-winning records, the Raiders dominated the Bears with their usual dose of savage defense and timely offense to emerge one of four unbeaten teams after four weeks.

“I’ve read and heard some things about us being the worst 2-0 and 3-0 team in the league,” Coach Art Shell said. “I don’t care what people say and the team doesn’t care. It doesn’t matter what anybody else thinks. The only thing that matters is what this team thinks. This is a good football team, and nobody can tell us different.”

The team from Chicago won’t.

The Raiders did a number on the previously unbeaten Bears. Their offensive line turned the lights out on Refrigerator Perry and his sack pals, allowing one meaningless, late-game dumping of quarterback Jay Schroeder, who turned in another energy-efficient performance on his way to 4-0 and another week of trade rumors.

After getting burned early for a touchdown, the Raider defense became hostile and took offense, scoring its third touchdown of the season in the second quarter on a Greg Townsend fumble recovery and sacking two Chicago quarterbacks six times for minus-66 yards.

The only thing left to settle afterward was a nickname for the Coliseum, which needs all the help it can get. The Raiders came up with “Black Bottom,” as in those who choose to enter these hallowed grounds may not return.

The bottom has swallowed up nine consecutive opponents since Shell took over as head coach a year ago Oct. 3.

“Our colors are black and our coach is black,” said Townsend, explaining the nickname. “And when you play on the grass and dig it up, the dirt is black. So we call it the black bottom.”

On Sunday, the color black best described the back of Bear quarterback Jim Harbaugh’s jersey. The Bears threw a curve at the Raiders initially, abandoning their power-running style because of runner Neal Anderson’s tender ribs. They resorted to a gadget offense filled with reverses and trick plays.

“It was a compliment that we could make them change their game plan,” Townsend said. “But they darn near beat us at it.”

The real shocker was that both offenses, conservative by nature, came out firing. The Raiders took a 7-0 lead in the first quarter on a one-yard Marcus Allen run after Schroeder had thrown 59 yards to Willie Gault to the Bear four-yard line.

The Bears set up at the 20 on their next possession and needed one play and 12 seconds to tie the game, as Harbaugh hit Dennis Gentry for an 80-yard scoring play on first down.

The Raiders regained the lead late in the quarter on a 27-yard Jeff Jaeger field goal and set the tone for the rest of the game early in the second, when Harbaugh dropped back to pass on third down at his own 23. Townsend took chase and forced Harbaugh back toward his own end zone. When Harbaugh spun to elude the pressure, he ran into rookie Aaron Wallace, who jerked Harbaugh down with one hand and forced the ball loose. Townsend scooped it up and crawled one yard for the touchdown to give the Raiders a 17-7 lead at the half.

The second half was more of the same, as the Raider defense continued its reign of terror on the Chicago backfield. Four of the Raiders’ six sacks Sunday came after halftime. The Bears finally changed quarterbacks in the fourth quarter, but no matter. Reliever Mike Tomczak received the same treatment. He was dropped twice in succession by Wallace and Townsend late in the game.

Wallace had two more sacks Sunday, giving him four in two weeks. The Raider defense has allowed two touchdowns in four games, despite losing one starter after another. First, it was Howie Long in week two. Last week, cornerback Garry Lewis was lost for six weeks with an injury. Sunday, defensive end Mike Wise sprained an ankle early and didn’t return.

The Raiders’ offensive line was equally inspired, giving Schroeder plenty of time to complete eight of 15 passes for 178 yards and a touchdown.

“They gave us a lot of looks,” Schroeder said of the Bears’ pass rush. “But the offensive line picked them up. You have to give them a lot of the credit.”

Schroeder completed only one pass on the Raiders’ final scoring drive in the fourth quarter, a key 20-yard completion to Mervyn Fernandez on third down to the Bear 23. Allen scored a three-yard touchdown with 9:11 left to finish the 44-yard drive and put the Raiders up by two touchdowns.

The Raider offensive line opened holes for its runners and plugged them for their quarterback, Schroeder, who was barely touched. Right tackle Steve Wright, filling in for the injured Bruce Wilkerson, kept Trace Armstrong quiet all day, which takes some doing. Armstrong entered the game as the NFL sack leader with five. Richard Dent, the NFC defensive player of the week last week, won’t make it two in a row this week. He was deftly handled with constant double-teaming. And thanks to right guard Max Montoya, defensive tackle William Perry is still hungry for a quarterback.

“They had all day to throw,” Bear Coach Mike Ditka said. “And when they have all day, he (Schroeder) is going to hurt you because he’s a good quarterback. They also ran the ball effectively. They blew us off the ball. We tackled as bad as I’ve seen this football team tackle.”

Wright said he could see the Bear defense becoming more frustrated as the game wore on. “By the fourth quarter, they were doing a lot of bitching to the refs,” Wright said. “When they start doing that, you know you’re on the downside.”

The Raiders’ line was generally considered an eyesore last year, but the addition of the veteran Montoya has helped the unit.

“We have five guys who are starting to come together,” Montoya said.

Shell split up the running chores about as equally and effectively as you can. Allen led all rushers with 57 yards in 12 carries. Bell added 46 yards in 10 and fullback Steve Smith had six carries for 29 yards. As a group, the Raiders averaged 4.3 yards per rush.

“We’ve got great guys on our offensive line,” Bell said. “Today, they were superior and dominated the battle.”

Raider Notes

The Bears were held to 101 rushing yards. Neal Anderson, the NFL rushing leader entering the game, didn’t start because of sore ribs and gained 26 yards in six carries. Rookie Johnny Bailey started for Anderson, finishing with 19 yards in six carries. . . . Chicago quarterback Jim Harbaugh completed eight of 18 passes for 149 yards with one touchdown and no interceptions. . . . Raider defensive end Mike Wise strained his right ankle in the first half and did not return. He didn’t think the injury was serious. “I’ve got a chance for next week,” Wise said. “I don’t want to be sitting on the sidelines the way we’re playing.” . . . Mike Harden was a late scratch at strong safety because of a neck injury suffered last week against Pittsburgh. Elvis Patterson started in his place. . . . For the second consecutive week, quarterback Steve Beuerlein was not activated.

* COLISEUM CROWD: One week after a fan was seriously beaten, police were cracking down on unruly fans. B1

* WILLIE GAULT: The former Bear receiver has his best game of season, catching four passes for 103 yards. C10