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Official 2021 - A Laguna Seca Thanksgiving 7+7-Hour Enduro - 11/20-21/2021


Bill Strong
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lagunaseca.png

 

42.jpg   November 20-November 21, 2021
WEATHERTECH RACEWAY LAGUNA SECA: D7, $1575
Monterey, CA
"Laguna Seca"
Early Pay Discount Ends: September 21, 2021
Event Director: info@champcar.org
Entrant List

 

90 dBa max sound. That is for the whole car, tires, intake roar, and exhaust pipe sounds, including dragging sounds.

 

Entries for Laguna Seca
Updated 10/8/2021   Limited to 45 entries

    Team Name Car # Year Make Model
1.   5.Slow 10 1989 ford mustang
2.   A thoughtful celebration of the life and times of orange yeller 214 1991 Mazda Miata
3.   Acura 4 Now 524 2007 Acura TSX
4.   Alchemy Racers 813 1984 BMW 318i
5.   APT Racing 299 1986 BMW 535i
6.   B Team - Just Plain Stupid 174 1974 Lotus Elite
7.   Bandits 47 1979 Pontiac Trans Am
8.   Blown My Wad 135 1994 BMW 328 I
9.   Club Fred Racing 83 1982 Mazda RX7
10.   Dead Pedal Racing 185 1987 Maserati BiTurbo
11.   Drive Skills 319 1992 Mazda Miata
12.   Formula33 133 1989 Pontiac Firebird
13.   Last Gas Garage 253 1991 Honda Civic
14.   LEFTOVER PARTS RACING 74 1984 MAZDA RX7
15.   Loanstaracers/Basil Weenie Racing 193 2008 Mazda MX5
16.   Los Pelligrosos 614 1996 Mazda Miata
17.   ORANGE PUMPKIN 137 1988 BMW 325
18.   Petrol Heads 203 2003 Mercedes-Benz C320
19.   Rotundo Racing 7 1998 Honda Prelude
20.   Rusty Duck Racing 99 2004 Mazda RX-8
21.   Six Bangers X 2004 Bmw 330ci
22.   Sweet Spot Racing 220 1988 BMW 325 V8
23.   The Gunslingers 69 1993 mazda miata
24.   We racing 949 1993 Acura Integra
25.   Wheels America Racing 998 2001 Mazda Miata
26.   Wilwood 119 1999 Mazda Miata
27.   Zoom Zoom Kaboom 183 1994 Mazda Miata

 

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  • Bill Strong changed the title to Official 2021 - A Laguna Seca Thanksgiving 7+7-Hour Enduro - 11/20-21/2021
  • 1 month later...
14 hours ago, DuncanDana said:

 

The track has a firm limit of 45 cars.

 

Dana

Thanks! I see the original post has also been updated. Now... just gotta see if I can get the car done for it!

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Sound rules have changed. We are still sorting out how the rules will work over the weekend.

89db max.   That includes the sound of your exhaust, any exhaust leaks, your intake roar, tire roar, the driver screaming in delight about how great this track is, etc.

You need a real muffler or two, or even three.. Glass packs are not real mufflers. 
If it looks like this...
sum-630851_xl.jpg

 

... It most likely wont pass sound.
I say this every year, and we have people show up with them. and guess what? They fail.

If you have a turbo, and think your safe? Nope. You will fail. 

ChampCar Endurance Series :: Sound Limits

 

soundsheet.png

 

SoundLimits (1).pdf

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Good story.

Last year we had a team that claimed we were wrong that they were not over the limit. 
I suggested a few things, and the team captain was not crazy about me giving him advice since I think he was a sound engineer or something like that.
He kept rev'ing his BMW and yes, it was quiet. But under load it was not. I happen to be behind the car when he was impressing me with his rev'ing abilities when I noticed that not a lot of air flow was coming out of the rear facing exhaust pipe. I put my hand over the pipe and that's where we discovered his professionally installed exhaust was not fully welded. He had a massive air leak at the merge for his exhaust manifold. 

 

 

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9 hours ago, Bill Strong said:

Good story.

Last year we had a team that claimed we were wrong that they were not over the limit. 
I suggested a few things, and the team captain was not crazy about me giving him advice since I think he was a sound engineer or something like that.
He kept rev'ing his BMW and yes, it was quiet. But under load it was not. I happen to be behind the car when he was impressing me with his rev'ing abilities when I noticed that not a lot of air flow was coming out of the rear facing exhaust pipe. I put my hand over the pipe and that's where we discovered his professionally installed exhaust was not fully welded. He had a massive air leak at the merge for his exhaust manifold. 

 

 

Exhaust leaks can be surprisingly loud. I am not a fan of super loud cars, so I have have three mufflers, and the exhaust tip is removable to add another pipe section/muffler/etc if needs be. I just need to buy a sound meter to actually measure it. I actually know a spot that turns up hill similar to turn 5 (if I recall the sound booth at Laguna Seca is to the right of the exit of turn 5?) that I could do some testing at.

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6 hours ago, Fetterhund said:

Exhaust leaks can be surprisingly loud. I am not a fan of super loud cars, so I have have three mufflers, and the exhaust tip is removable to add another pipe section/muffler/etc if needs be. I just need to buy a sound meter to actually measure it. I actually know a spot that turns up hill similar to turn 5 (if I recall the sound booth at Laguna Seca is to the right of the exit of turn 5?) that I could do some testing at.

 

 

Yep. That's the place

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Some useful links.

It's always good to have some spare bents and exhaust piping in the trailer to fix issues at the track.

Side-pipe hookup kits are awesome at allowing different ways of making exits or even fixing crash damage.
They come in various flavors, 2.5" and 3" for some cheap money. Looks like 3" is out of stock. These are slip-fit mandrel bends with exhaust clamps, so no welding is needed.
https://www.speedwaymotors.com/Speedway-2-1-2-Inch-Side-Pipe-Exhaust-Hook-Up-Kit,5423.html?_br_psugg_q=exhaust+systems+and+pipes

 

Having a couple of these combo bends is a great way of getting that "just right" bend.
https://www.speedwaymotors.com/Combo-Exhaust-Pipe-Mandrel-Bend-Header-Tubing-Mild-Steel-2-1-2-Inch,67444.html

 

I am showing 2.5" exhaust, and I know that goes against every instinct to use big pipes on race cars. But the smaller pipes can also be quieter when it comes to the sound that the track is measuring. 2.5" is a good compromise when it comes to reducing back pressure and keeping sounds low. 
As with any racing car, it's always good to build two systems for your car, one on it,m and one in the trailer or pickup to fix damage either during the race, or after.  I find buying these kits is super cheap and makes fixes easy.
https://www.speedwaymotors.com/Universal-Mild-Steel-Dual-Exhaust-Mandrel-Bend-Kit-2-1-2-Inch,36340.html

 

Exhaust flange gaskets. 
After years of testing on the V6 MR2, I found different ways of making a very reliable flange setup for endurance racing.
The most reliable setup was the Chrysler/GM style ball and socket flange. Heavy and costly, they are the most bulletproof setup I have ever used. These make great exhaust adapters where you can adapt dis-simular exhaust diameters, like make an 89db Laguna exhaust system, and when you race at Willow Springs, you can easily put your 96db exhaust on.
https://www.wesdonautomotive.com/direct-flex-pipes-w-flange/

Header collector or general exhaust gaskets. 
I have used the supplied gaskets for headers, and for the most part, they failed almost within the first stint. Especially the Chinese manufactured "eBay/Amazon" stuff. I have successfully welded new American-made 3-bolt flanges onto my Chinese headers, and had about a 1/2" overlap on the joints, and combined with the copper gaskets made a pretty bulletproof setup. It's not perfect and doesn't take to moving around well, without some sort of flex. I also double-nut the bolts. Drilling the nuts and safety wiring them also works well.
https://www.speedwaymotors.com/Search?query=exhaust flange&facet=l_material_type:79

 

V-Band interlocking clamps.
I started using these clamps a few years ago. Good ones are not cheap. But they are pretty damn reliable if you use them in conjunction with flex joints.
These slip over the pipes, and always have an overlap to act as the gasket.
https://www.summitracing.com/search/part-type/exhaust-clamps/clamp-style/v-band

 

Exhaust pipe flex tubes. 
My experience in my cars has shown that the ball and socket is the best for my racing applications. But sometimes money and maybe the location of the needed joint does not allow the use of one of those. 
I found that the typical wire-wound flex is good as long as the inside is not braided wire. Those cheaper versions failed after one of two race events. Having an interlocking smooth inner section like this is much better and does last much longer. For me, it was about a season of endurance races(10 or so).

Trailer tools.
Of course, everyone wants to do this racing stuff on the cheap. One of the best tools to load into your toter home and 40' triple stacker trailer is a welder. It's always good to have a tool to fix those pesky exhaust leaks that can keep you from racing. Welding with a MIG welder is not that hard to learn. Can you weld dimes as you see all over the internet? Hell no. But you can easily learn to MIG weld your exhaust to easily pass sound. Of course, your buddies that hang out in welding groups on the Internet will frown upon the tool I am going to post up. You can easily spend five figures on welders, and the more pricey welders are going to probably make the job easier, and look better. But for just over $100 you can get a Flux MIG welder that can do a good job at field welding parts on your race car. Flux wire does not require a bottle of gas, can actually get better penetration, and works awesome in outdoor windy conditions. It's not a pretty weld like you see on the Internet. But it works. And remember, even if you don't know how to weld, there are 20 others in the paddock that can do it as long as there is a welder to use. It operates on 110v power. It won't weld thick stuff in one pass, but for the exhaust pipe, it does a wonderful job.
Get some good gloves, an auto-darkening helmet, and a roll or two of flux-core wire, and some good wire brushes. All that can be had for under $200. 
https://www.harborfreight.com/flux-125-welder-63582.html

Exhaust hangers and clamps.
Those clamps that you connect the pipe up with can hang down pretty low. Racing can take you places that might be good to those low-hanging bits on your car. They can dig into the dirt, which can catch on curbing, and when that happens, that can weaken the joint, and cause the exhaust to hang, or just fall off. Keep the threads and nuts at an angle of at least 90 degrees to the ground. 
Your muffler with its flat face can catch stuff too when you get off-road, or even on curbing. I weld a 16-gauge steel sheet to the leading edge of the muffler to act as a ramp. This can also make the underside of your car more aerodynamic. Remember that it may be a good idea to add a ramp to the back of the muffler too. Your car may not always be moving with the nose forward. They also work as a gusset for the muffler improving the strength. 

mufler ramps.png

Chains.
Chains work awesome at keeping your exhaust off the ground. When or if your hangers fail, these can save your expensive exhaust from rubbing in the ground, or from getting you black flagged for a dragging pipe. 

There is probably more, but I have to get on with other ChampCar work now.  

 

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Any word on guests/spectators being allowed for this event/limit on crew size? Still trying to see about getting the car ready, but some family, not going to be drivers, are interested coming out if we do have a car ready to race.

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22 hours ago, Fetterhund said:

Any word on guests/spectators being allowed for this event/limit on crew size? Still trying to see about getting the car ready, but some family, not going to be drivers, are interested coming out if we do have a car ready to race.

 

We will know more a month or so out. 
But right now they would just pay the weekend membership of $20 each. Kids under 16 free. 
If they go over the wall, they have to be full ChampCar Members.

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We have an update, short version, Flagtronics units will be available for the Laguna Seca event.

 

As most of you probably know, we have been working with Flagtronics to develop an in-car flagging system. We've test run the system several times this year and I really wanted to bring the system out to the West Coast so you guys can try it out too. We've been able to work out the logistics, and we are even bringing a members of the Flagtronics team to make sure it goes to plan.

 

I'll have Bill upload more detailed information about mounting the system, but all you need is 12volt power (either a cigarette lighter or USB plug will do), two places to put some velcro and maybe some zip-ties if you want to be all neat and tidy about it. That's it, all you have to do after that is look at it, simple right?

 

The systems are free to use while we continue to develop the programing. However, the units we will be loaning out are full production versions and available for sale if you'd like to get one.

 

Thanks,

Dana 

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20211012_111329.jpg

 

20211012_111352.jpg

https://flagtronics.com/collections/racer-collection

 

Order - https://flagtronics.com/apps/bundles/bundle/71504

 

12v taps or 5v USB as both connectors are included. 

Instruction PDF link - FT200 Product Manual.pdf
 

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Champ car out on the west coast had two events for 2021. So has flagtronics been tested at willow springs and laguna yet? For laguna Just thinking behind the mountain between turns 6 and 8 will be hard to get a signal.  Even race radios have difficulty.  I’m excited to see the system in use at laguna during my driving stints. I hope it works great and I do like seeing the safety aspects 100%.   I hear these are becoming mandatory for 2022?  I’m cautious to buy one since this series only had 2 west coast stops in 2021.  Seems like uncertain times - Willlow springs event in June  had a low car count and champ car lost money. The upcoming Laguna event has a lower than desired car count as to date.  The high costs of track rental, insurance, fire and safety etc. and doing the simple math, this event  will also be a loss of money for the series.   😕  I hope I’m wrong here. 

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8 hours ago, Petrolholic racing said:

Champ car out on the west coast had two events for 2021. So has flagtronics been tested at willow springs and laguna yet? For laguna Just thinking behind the mountain between turns 6 and 8 will be hard to get a signal.  Even race radios have difficulty.  I’m excited to see the system in use at laguna during my driving stints. I hope it works great and I do like seeing the safety aspects 100%.   I hear these are becoming mandatory for 2022?  I’m cautious to buy one since this series only had 2 west coast stops in 2021.  Seems like uncertain times - Willlow springs event in June  had a low car count and champ car lost money. The upcoming Laguna event has a lower than desired car count as to date.  The high costs of track rental, insurance, fire and safety etc. and doing the simple math, this event  will also be a loss of money for the series.   😕  I hope I’m wrong here. 

 

So to break this down in a few sections.

 

First, ChampCar is a Nationwide series, and that means a continued presence across the country. And since we are a member owned club, and registered as a not-for-profit, we don't have to make money on every event. As long as the company is stable across the country, we're ok.

 

Second, we are still working on additional events out west, we just have to solidify some dates and we'll add them to our calendar.

 

The issue of coverage, and an excellent question. The Flagtronics system use a series of repeater antennas. Placing them at those "shadow" areas allows the system to sort of look down onto the race track. It also allows us to reach over any fences and other metal barricades that can interfere with signals. Determining where to locate them around each track is part of the of the development process. We're probably bringing more than we need, but once we test signal strength we'll know better what we need for next year.

 

Last. We are going to make the system mandatory in 2022. Probably mid-summer once we know we have any programing bugs worked out. However, we will have units available for rent just like we do with transponders. 

 

Thanks for some great points, looking forward to being back out there again.

 

Dana

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8 hours ago, Petrolholic racing said:

Champ car out on the west coast had two events for 2021. So has flagtronics been tested at willow springs and laguna yet? For laguna Just thinking behind the mountain between turns 6 and 8 will be hard to get a signal.  Even race radios have difficulty.  I’m excited to see the system in use at laguna during my driving stints. I hope it works great and I do like seeing the safety aspects 100%.   I hear these are becoming mandatory for 2022?  I’m cautious to buy one since this series only had 2 west coast stops in 2021.  Seems like uncertain times - Willlow springs event in June  had a low car count and champ car lost money. The upcoming Laguna event has a lower than desired car count as to date.  The high costs of track rental, insurance, fire and safety etc. and doing the simple math, this event  will also be a loss of money for the series.   😕  I hope I’m wrong here. 

Our antennas are bigger... 😉

In all seriousness though, I am looking forward to this event!  I haven't been to California yet and I'll be glad to see some west coast teams and their cars.  And, as I was typing this response, @DuncanDana broke down some key elements of Flagtronics coverage. Upon surveying the track, it will be one of the more tricky courses to cover because of all the fencing, but all the other elements make it not so bad.

Image from iOS (47).jpg

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@DuncanDana

 

I was asked by a member if there is a practice day on Friday. I went to look at the Supps and while there is a "Move-In Day + Practice Day" listed in the schedule for Friday, there are no details as to when the track will be open. 

 

Any clarification? 

 

Thank you!

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