As race fans, we all love the roar of the engines and the beauty of the slick bodies on a NASCAR Sprint Cup racing machine especially at the super speedway races like we just had at Daytona. I was able to pick the brains of the engine tuner for the Miller Lite Dodge and a couple of the fabricators who specialize on the super speedway cars in the Penske stable. Here is what I found out.
The Penske Powerhouse Darin Russell, the primary engine tuner for the No. 2 Miller Lite Dodge, attended an auto technical school to obtain his college degree and was originally hired by Robert Yates Racing where he cut his teeth for four years before being hired by Penske Racing.
(Darin in the center of the picture "working it" in the garages at Sonoma...)
Darin is in his fourth year tuning the engines at the track which he loves because he says, “the engines are the heart of the race car and what racing is all about.” Darin can choose to tune the Miller Lite engine for more horsepower or for better fuel mileage depending on the track and the race. While at the track, Darin becomes an amateur weatherman as he monitors things like temperature, barometer and vapor pressure, all which affect how these finely tuned engines will run under racing conditions.
At the track, Darin is responsible for anything engine related and has to complete this checklist each day the Miller Lite Dodge goes out on the track.
The Penske Dodges have a 15/16th plate engine that produces “approximately” 400 HP and has special “Spintron” technology that runs the valve train system. Dodge supplies all the Dodge teams with the basic racing engine block and then each Dodge team tweaks the engines to their needs. The Dodge racing teams do not share that information with each other but they do share information with Dodge.
There are 60 employees at the Penske Racing Engine shop, which is actually located about 45 minutes from the main Penske Racing garage. Not only does this shop house about 100 engine blocks, with 30-40 engines fully built at anytime, it also is the main source for Penske engine parts. Penske used to outsource their parts but since competition has become so fierce in the NASCAR garages, this is yet another way they can assure other teams do not find out what parts they are using or how they are modifying them.
It takes about three days for the Penske team to build an engine from start to finish. Each engine has about 50 cycles put on it on the Penske shop dyno machine before its put in a Miller Lite race car. Once it is in the car the engine will go through about another 25 cycles on the chassis dyno before it hits the track. The engine parts all go through tremendous amounts of testing before they are assembled into the engine.
(This is Dale Jr's engine from Talladega last year...Penske does a better job of covering their engines!)
The Miller Lite team tears down the engine after every race and surprisingly, this process only takes about a half an hour. In fact, the Brew Crew can change out an entire engine at the track in about the same amount of time if a Penske powerhouse unfortunately “blows.” These days if you lose an engine at the track, you usually don’t bother fixing it, instead you just swap it out to be safe and tear it down afterwards to analyze the malfunction. That also means they only use an engine once. However, the team might re-use certain engine parts like the heads, blocks, and cranks but they keep a close eye on the mileage to determine when to stop using them. Usually races will put about 800 miles on an engine per race weekend and the Miller Lite team has tested durability for some of its parts for up to 1100 miles.
The biggest difference with the “new” Penske engine being used full time by the three Penske teams is that is it lighter and now looks more like the Ford racing engines because the distributors are now up front. It also (of course) produces more horsepower and torque.
Fab-ulousThere are 28 fabricators at the Penske shop and instead of working on each Penske racing team, they are divided by type of race car. There are eight senior fabricators that focus on the super speedway cars and the rest work on the down force cars.
There are six surface plates the cars are built on and they estimate it takes about 10 days to build a car, up to 16 days to build a super speedway car. For most races, they have seven cars built total, two for each racing team and one is kept at the shop in case of dire emergency. For the Daytona 500, they build 10 cars total just because it is such an important race and there is so much time on the track. At any one time, the Penske fabricators have about 15 cars built per race team and they are always try to be at least one week ahead of the race schedule.
The Miller Lite Dodge and the rest of the Penske cars are fabricated out of 24 gauge sheet metal. Penske gets the main body parts like the nose and the rear deck lid from Dodge and those parts are stock “stamped” so NASCAR can see they came from the manufacturer. This season, all of the Dodge teams got a new nose and it seems to have helped them turn better through the corners.
It takes the fabricators two days alone to get the roof, deck lid and hood shaped just right especially on a super speedway car. However, the nose and front fenders are the most important part on the super speedway car. Another difference on the super speedway cars is that they use thicker windows and use lots of extra braces and brackets to hold the sheet metal in place because the draft is so violent it can literally skin the sheet metal right off the car.
The fabricators work 7:00AM to 4:00PM daily and in November and December they tend to work seven days a week preparing for Daytona. They said the worst part of their job is trying to get the cars to fit NASCAR’s templates as they have very little wiggle room to make adjustments on the COT but they keep trying to get an edge. Penske uses the wind tunnel at Dodge headquarters in Detroit but more recently has begun using a local wind tunnel in North Carolina because it saves them time and money to not have to travel for three days.
I hope you enjoyed learning a little bit more about the engine and body shops at Penske Racing. The next time you see that Blue Deuce, I hope you’ll appreciate more the time and effort it takes to make it rumble around the track.
The Brew Crew has entered the wide world of Twitter and are "tweeting the Chase" from the track and the Penske garages for the next ten weeks. Luke (shocks), Darin (engines), Stretch (mechanic), Bill (interior/gas), Mule (tires) as well as Pat Tryson and the rest of the pit crew will be answering questions and giving us exclusive updates and insights in real time. You can follow them on twitter as "@BlueDeuce2Win." Be sure to ask them who their favorite tool cart girl is...
