A Rap Board for Race Fans
Welcome to Race Rap! A Rap Board for Race Fans
Top News
The Plain Truth News
May 23, 2019 -
Speed Only Kills Your Pocketbook

Drive For Diversity Program News
May 23, 2019 -
NASCAR, Rev Racing reveal top collegiate athletes for NASCAR Drive for Diversity National Pit Crew Combine

OTHER News
May 23, 2019 -
IndyCar gratified flying cars “didn’t go upside down” at 220mph

Nascar Series News
May 22, 2019 -
NRE RIDEALONGS AMONG CAN'T-MISS ATTRACTIONS DURING COCA-COLA 600 RACE WEEKEND

Obituary Notice News
May 21, 2019 -
Formula 1 legend Niki Lauda DIES AGE 70

Nascar Series News
May 21, 2019 -
Why CBD industry might become next big sponsorship for IndyCar- or should it be for NASCAR?

Nascar Series News
May 21, 2019 - Randy Hallman
THE MAN WHO DISCOVERED DENNY HAMLIN

Nascar Series News
May 21, 2019 -
She's Just 17, But She's A Phenom On NASCAR's Fast Track

The Plain Truth News
May 20, 2019 -
CLINT BOWYER THROW PUNCHES AT RYAN NEWMAN DURING NASCAR ALL-STAR RACE

The Plain Truth News
May 20, 2019 -
The Photo of the Day

The Plain Truth News
May 20, 2019 -
New study shines more light on what Google collects and knows about its users

The Plain Truth News
May 20, 2019 -
Stories on living to be 100!

The Plain Truth News
May 20, 2019 -
Today in The Plain Truth

The Plain Truth News
May 20, 2019 -
YOUR HEALTH TODAY

The Plain Truth News
May 20, 2019 -
HEADLINES & STORIES FROM AROUND THE WORLD

Nascar Series News
May 17, 2019 -
NASCAR.com to live-stream six events from Charlotte All-Star Race weekend

NHRA Drag Racing Series News
May 17, 2019 -
NHRA Confirms 24-Race 2020 Schedule

Nascar Series News
May 17, 2019 -
Speedway Motorsports makes public $60M pitch to bring NASCAR to Fairgrounds

Nascar Series News
May 17, 2019 -
NASCAR driver Bubba Wallace breaks down in tears discussing struggles on and off track

Denny Hamlin Fan Club News
May 17, 2019 -
Why FedEx says a NASCAR sponsorship is worth a billion

Stafford Motor Speedway News
May 17, 2019 -
Chase Dowling Ready to Rebound in May 24 Open Mod 80 at Stafford

Drive For Diversity Program News
May 17, 2019 -
NASCAR Diversity Internship Program announces 2019 class

Advertisement For RaceRap Customer News
May 6, 2019 -
Tamco Clear- As Clear as Water!

Langley Speedway News
May 5, 2019 -
Post Race Recap 5-4-19 from Larry King Law's Langley Speedway

Drive For Diversity Program News
May 3, 2019 -
Justin Crider Updates

Stafford Motor Speedway News
Apr 28, 2019 -
2019 Stafford Speedway Limited Late Model Season Preview

Stafford Motor Speedway News
Apr 28, 2019 -
2019 Stafford Speedway Late Model Season Preview

Langley Speedway News
Apr 28, 2019 -
Post Race Recap 4-27-19 from Larry King Laws Langley Speedway


Please patronize our sponsors!
PAINT OVER RUST!


Tamco Paint.Com NOW ONLINE


Tamco Marine-Fleet-OEM Coatings

Legend
  4:09pm   Past Hour
  3:09pm   1-4 hrs old
  12:09pm   4-12 hrs
  4:09am   12-24 hrs
  4:09pm   Over 24 hrs
     Registered Key
     Referred Key
RaceRap News & Messageboard  Page tracks: Viewing Message
   Viewing Message
Restrictor plate stories
 Nascar Series 
Posted by:  Harry on February 13, 2019 at 8:29am

From NBC Sports:

Restrictor-plate gamesmanship: Here’s how teams gained more speed
By Dustin LongFeb 12, 2019, 8:30 PM EST

DAYTONA BEACH, Fla. – Eyes dart and scan the surroundings. Satisfied we are alone, a grin emerges. Still, because of the sensitivity of the subject, the person speaks in a hushed tone. One does not loudly boast about outsmarting NASCAR inspectors.

But they do boast.

“Oh hell, I’ve got all kinds of stories.”

While NASCAR discourages rule breaking with more severe penalties — including the recent announcement that officials will disqualify any car that fails inspection after a race — the sport’s history and part of its charm stems from those who broke the rules.

This weekend’s Daytona 500 marks the final race with restrictor plates. Tapered spacers will control horsepower moving forward. And so closes a chapter of ingenuity by teams to find extra horsepower. The storytellers prefer to remain anonymous but are willing to share with NBC Sports their cat-and-mouse tales through the years with officials.

One person recalls a time in the 1990s in what was then called the Busch Series. This was back when nearly 10 cars would fail to qualify for the season-opening race. This particular team was in danger of failing to qualify.

The team’s luck changed when a garage veteran offered a tip on how to make more horsepower: Slip a couple of acrylic washer rings between the restrictor plate and the carburetor. That gap allowed more air to flow into the engine and create more horsepower.

“We got them in and our car qualified in the top 10 and we’re scared to death,” this person said. “We’re going to end up being checked (by NASCAR).

“We were hoping to be under the radar, come in around 20th or 25th and just be in the race and we’re being held and I’m like ‘Holy crap.’ ”

They were eventually waved by and didn’t have to go through inspection after qualifying. As they headed back to the garage, the driver told the crew member: “Make sure you get them out of there!”

They did. The team didn’t use the rings in the race because the draft was enough of an equalizer.

“Never did anything like that ever again,” the person said. “I’ve never shared that with anybody.”

The need for such creativity came after Bobby Allison’s car destroyed a section of fencing in the May 1987 race at Talladega Superspeedway. NASCAR sought to slow the cars to keep them from exceeding 200 mph and getting airborne. That led to the use of restrictor plates. They also were used for a time in what is now the Xfinity Series.

With an inspection process less stringent years ago than it is now, teams found ways to harness more horsepower despite the restrictor plates.

Sometimes it was quite elementary. One person recalled asking inspectors for permission to tighten a nut after the restrictor plate had been inspected.

“You would have a mark on the stud and you knew that (the mark) had to be at 12 o’clock and you would leave (the nut) at 10 o’clock,” they said. “You would turn it and it would leak air. It was like a tunnel (of air).”

Anything to get air into the engine.

“They were all talking about air leaks … like somehow leaving the carburetor loose or get back in there and loosening nuts because if you could raise the carburetor up, then you sucked air underneath it,” another person said.

Someone else talked of making the plates slide along the carburetor.

“As you cranked (the engine), the vacuum would pull it and it would give eight or nine horsepower,” the person said of the widened avenue of air to the engine. “Enough to haul ass.”

Another person talked about having a bit of sandpaper on a fingertip and rubbing the finger around the inside of each four rings to smooth them and allow more air to seep through the restrictor plate into the engine.

And another noted how they would “offset the center of the baseplate to the restrictor plate so it wasn’t lined up anymore and that created more airflow. You misaligned it by creating a special baseplate on the carburetor. There was no rule against it. … It was worth about seven horsepower. It was a really big advantage.

“Finally people figured out what you were doing, and they came up with a rule.”

As so often happened, rules were added and the game of getting additional air through the restrictor plate became more challenging through the years.

Still, what was done, makes for some entertaining stories.

“There are so many great stories.”

Back |ThreadPost a Reply

Current Replies:

• Restrictor plate stories Buck - Feb 14, 2019 6:33am



Post a Reply  Asterisks indicate required fields
Please note that anonymous posts are not being accepted at this time.

* Subject:
* From:
* Email: (only required if no password)
Password:  For registered handles
* Message:
Please verify you're a human.
If you are a registered user,
you do not need to complete this field

Please, no profanity or slandering.


Need Spell Check? IE users Click here for a free browser extension


Home  |  Contact

(c) Copyright 2019 RaceRap, LLC

[ Go To Top of Page ]

Tracksdie Weather


Driver Web Sites - Click Here

Advertisers









Tracks

Click Here for entire list of tracks and series

RACERAP TOP NEWS
RACERAP TOP NEWS

RaceRap News & Photo Page
RaceRap News & Photo Page

Dillon Motor Speedway
Dillon Motor Speedway

Caraway Speedway
Caraway Speedway

Hickory Motor Speedway
Hickory Motor Speedway

Driver & Team Press Releases
Driver & Team Press Releases

Florence Motor Speedway
Florence Motor Speedway

Coastal Plains Raceway Park
Coastal Plains Raceway Park

Richmond International Raceway
Richmond International Raceway

Myrtle Beach Speedway
Myrtle Beach Speedway

Southside Speedway
Southside Speedway

Southern National Motorsports Park
Southern National Motorsports Park

Mountain View Speedway
Mountain View Speedway

Editorial

Lonesome Pine Raceway
Lonesome Pine Raceway

ACE Speedway
ACE Speedway

Wake County Speedway
Wake County Speedway



Series

Click Here for entire list of tracks and series

Pass Series Racing
Pass Series Racing

UARA Series
UARA Series

MiniStock Mayhem Series
MiniStock Mayhem Series

South East Limited Late Models Series
South East Limited Late Models Series


RaceRap, LLC

RaceRap