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Old 02-14-2013, 04:14 PM   #1
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SCCA Houston Region B Spec build :)

It's been some time since I've done any competitive racing(Formula Mazda '07-08), but I'm finally putting something together to get back into the swing of things :)

I had been itching to put a B Spec car together since first hearing about the program years ago with my sights on a Honda Fit. But, since I am a Toyota employee and I see that there is no other current Yaris competitors, I pulled the trigger.

I will be documenting the cars build for myself, forum members, and for current and future sponsors :)

As she sits today...






THANKS!

Andrew
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Old 02-14-2013, 04:22 PM   #2
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Good luck man, I hope the class gains some traction this year.
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Old 02-14-2013, 06:45 PM   #3
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Yes, great news!
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Old 02-14-2013, 07:37 PM   #4
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Whaaaaat! Subscribed.
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Old 02-14-2013, 08:04 PM   #5
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Wish we could swap with you, ours needs to get out more.

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Old 02-14-2013, 09:04 PM   #6
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Yes, keep us posted I'm looking for a second Yaris to do the same with, my current car is already being prepped for STF Autocross duties.

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Old 02-15-2013, 01:18 PM   #7
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Originally Posted by Jason@SportsCar View Post
Wish we could swap with you, ours needs to get out more.

I'll come pick it up :)



I have an open track day coming up at Texas World Speedway on March 2-3rd. So be ready for some pictures and updates!

Thanks,

Andrew
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Old 02-15-2013, 02:47 PM   #8
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I'll come pick it up :)



I have an open track day coming up at Texas World Speedway on March 2-3rd. So be ready for some pictures and updates!

Thanks,

Andrew
I would take you up on that if it was mine to trade.

Are you going to have any B-Spec parts or race tires on it when you run?
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Old 02-15-2013, 06:15 PM   #9
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I would take you up on that if it was mine to trade.

Are you going to have any B-Spec parts or race tires on it when you run?
Jason, where do I find the allowable B-Spec mods for the Yaris, I can't find anything in the GCR? Is it strictly whatever TRD offers in the way of struts, shocks, springs, and swaybars??

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Old 02-15-2013, 06:20 PM   #10
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Jason, where do I find the allowable B-Spec mods for the Yaris, I can't find anything in the GCR? Is it strictly whatever TRD offers in the way of struts, shocks, springs, and swaybars??

racerb
We submitted the parts (TRD shocks and springs) for testing, and requested the part numbers be put on the spec line. They should show up eventually.

The car also needs a weight break. I think it should weight the same as the Mazda 2, based on power and gearing, but without more on track results I doubt they will adjust it.
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Old 02-15-2013, 06:29 PM   #11
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Sounds about right, I've been given permission to run the car in NASA with all TRD parts as either B-Spec or PTG Limited Prep car. Thinking of keeping it B-Spec so I can run both SCCA and NASA, since I'm already running SCCA Solo events in STF with my 2010 Yaris.
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Old 02-17-2013, 01:10 PM   #12
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Originally Posted by Jason@SportsCar View Post
I would take you up on that if it was mine to trade.

Are you going to have any B-Spec parts or race tires on it when you run?
I will be running it in stock form for it's first time out. I do have some Dunlop DZ101's with decent tread left though...

Quote:
Originally Posted by Jason@SportsCar View Post
We submitted the parts (TRD shocks and springs) for testing, and requested the part numbers be put on the spec line. They should show up eventually.

The car also needs a weight break. I think it should weight the same as the Mazda 2, based on power and gearing, but without more on track results I doubt they will adjust it.
What did that B-Spec end up weighing before ballasts?

Thanks,

Andrew
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Old 02-17-2013, 01:17 PM   #13
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ALSO, dropped by my friends at PowerFab Automotive here in town and got a few free dyno pulls :)

ALL stock 2009 3-door hatch with 38k miles!




Very consistent numbers and GREAT torque from 2-5k. I believe these were done in 3rd gear on a DynoJet dyno.

Thanks,

Andrew
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Old 02-17-2013, 01:45 PM   #14
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Not 100% sure, but doubt very seriously SCCA would have any problem with you running the full TRD suspension system. The TRD parts are so basic compared to say the Ford Racing and/or Mazda Speed kits that both have adjustable ride hieght setups.

Here is a link to Sparks Toyotas TRD page with the parts I'll be running in NASA...
http://www.trdsparks.com/displaypart...&parts_id=1104

By comparison here is the Ford Motorsports kit info, quite a bit more racecar like, than what TRD is currently offering!
http://www.fordracingparts.com/competition/bspec.asp

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Old 02-17-2013, 02:42 PM   #15
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Here is what Mazda Speed offers for the 2, which I think is the cars the Yaris is most closely match to in about every category....
http://www.mazdamotorsports.com/wcss...ec_flier11.pdf

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Old 02-18-2013, 05:00 PM   #16
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What did that B-Spec end up weighing before ballasts?

Thanks,

Andrew
We built the car back in 2010, and I don't recall the exact number. However, it was not built light... The car was built with a 1.75x.120 cage (at the time it was thought this might become the B-Spec standard due to Grand-Am possibly being the officiating body, but that did not happen), so that is extra weight. It still has the complete sheet metal in the front doors (no Nascar style bars), plus both power windows and some of the audio gear is also in there. We also mounted the drivers seat on sliders with a back brace to accommodate guest drivers. Complete fire system. Has a TRD muffler, instead of a strait pipe.

When it ran at Fontana a few weeks ago it was on heavy stock steel wheels, and I filled the gas tank till fuel was right at the flap, finished the race 7lbs over minimum - which sounds great, but we also had a 6'+, 240lb+ Swede behind the wheel.

Figure on a standard build with an average size driver you are looking at 150-200lbs of ballast.
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Old 02-18-2013, 05:16 PM   #17
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Not 100% sure, but doubt very seriously SCCA would have any problem with you running the full TRD suspension system. The TRD parts are so basic compared to say the Ford Racing and/or Mazda Speed kits that both have adjustable ride hieght setups.



racerb
The rules certainly don't lend themselves to that interpretation. We had one guy questioning if we could even run the car, because he did not see it on the list of BS cars for World Challenge. You are stock until they approve your kit.

I think the other guys have way overdone it on the kits... They keep dumbing cars down with weight and restrictors because the Fiat can't keep up - even thought it got a CAI and header. Not much point in developing good parts for a car if the reward is being slowed down more. That is why when we talked with Toyota we decided to keep it simple and inexpensive. I would rather see the Yaris get a weight break then have to buy a more expensive suspension kit.
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Old 02-18-2013, 08:04 PM   #18
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Well, I guess NASA it is!! They have already given me the go ahead to run the TRD pieces and compared to the other trunk kits, it's pretty cheap and simple. Even if it doesn't draw more B-Spec cars out to the track, I can make additional mods and run it as a Performance Touring car, with nearly limitless modifications.
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