Kenlilley04's STF Build Thread - Mazda3 Forums : The #1 Mazda 3 Forum
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post #1 of 86 (permalink) Old 11-04-2015, 12:25 AM Thread Starter
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Kenlilley04's STF Build Thread

Hello everyone, I've decided in the last month or so to start auto crossing my 04 mazda 3s. car just hit 140,000 miles and is my current daily driver here in Titusville Florida (Orlando area). I'm mainly looking for some advice on a few topics I've been researching, mainly weight saving (looking at some aftermarket seats) and rim sizes, i would like to get a new set of 17x7.5 sparcos (cheap and somewhat lightweight) but i know everyone basically runs the 15 inch rotas.

Car currently set up with Megan racing Coil-overs, with 450lbs rear springs and 350 lbs front springs, also have BC racing adjusters in the rear. JBR rear sway bar with Moog end-links, just recently installed a vibrant header and a Corksport cat-back with high-flow cat. (really love the sound and noticeable power gain). Also have Moog front end-links and new Mevotech ball joints are on the way. TWM Short Throw Shifter and solid shifter bushings with a Big type R shift knob.

I will be getting a CAI soon but for right now rims and tires are the priority, as well as some better rotors and some EBC Yellow pads all the way around.

Please feel free to comment with any and all suggestions, i used to race asphalt superlate models so ive been around racing my entire life, i also ran my dads 98 corvette this year in CAM-S so im no stranger to the racing community, sadly he wont let me prep the corvette lol
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post #2 of 86 (permalink) Old 11-11-2015, 10:25 AM
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Consider replacing the battery with a lightweight LifePo4 such as the Battery Tender 360cca model. It'll save you 35+ pounds off the front of the car.
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post #3 of 86 (permalink) Old 11-14-2015, 12:52 PM
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Don't be shocked when the Moog endlinks bite the dust if you drive in an area with a lot of potholes. I'm upgrading to heim jointed endlinks so at least I can rebuild them if they start making a lot of noise.
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post #4 of 86 (permalink) Old 11-21-2015, 11:33 PM
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Please for the love of christ don't use a cheap motorcycle battery...IT WILL cost you many tenths at the national championships by intermittently disabling ABS and power steering.

Ask me how I know...yay 3rd place in 2014

Might I suggest trying to save up to replace your coilovers with something more suited to autocross and able to handle about double the rates you're on now


As for wheels...I may have a set I'd be willing to part with in the size you want...lighter too

Quote:
Originally Posted by JTilus View Post
Consider replacing the battery with a lightweight LifePo4 such as the Battery Tender 360cca model. It'll save you 35+ pounds off the front of the car.

David Hedderick
08 Mazda 3s Sport - new STF car (sponsored by BC Racing NA and BFG)
2013 MS3
92 Miata - SSM light project
(formerly 2011 STF Mini Cooper)
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post #5 of 86 (permalink) Old 11-21-2015, 11:35 PM
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P.S. - the car "looks" too low right now. Hard to see without good profile shots at rest.

David Hedderick
08 Mazda 3s Sport - new STF car (sponsored by BC Racing NA and BFG)
2013 MS3
92 Miata - SSM light project
(formerly 2011 STF Mini Cooper)
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post #6 of 86 (permalink) Old 11-23-2015, 12:45 PM
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Quote:
Originally Posted by miata_racer View Post
don't use a cheap motorcycle battery...IT WILL cost you many tenths at the national championships by intermittently disabling ABS and power steering.
I agree. Don't use a cheap motorcycle battery. That said, there are lightweight battery options that seem to be working fine in other Mazda3's.

Dave, was your battery the lead acid type? Those things are junk. Even my Focus eventually had problems with the ETX9 I was using. The LiFePo4 batteries are WAY better.
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post #7 of 86 (permalink) Old 11-29-2015, 03:23 PM
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Quote:
Originally Posted by miata_racer View Post
Please for the love of christ don't use a cheap motorcycle battery...IT WILL cost you many tenths at the national championships by intermittently disabling ABS and power steering.
Ask me how I know...yay 3rd place in 2014
LOL don't blame the battery for the results, was all on you ,

1- cheap battery set up, I still have your pics somewhere lol !!
2- Dirty driving.

I don't blame my cheaty results this year on my car, just poor driving.

Still love you, you are an icon

Andres
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post #8 of 86 (permalink) Old 11-29-2015, 07:53 PM Thread Starter
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The car was way to low when those pictures were taken, it has since been raised up about an inch all around.

I'm working on getting some BC Racing ER type coil overs. But that might be a while.
JBR rear sway is in along with new end links (bushing are very loud, any advice on how to quiet them up? They have plenty of grease)

Still looking for wheels but I've decided on the tires (RE71's) just need to decide on the size I want.

New clutch is on the way, as well as the ball joints. I need more time before the next season starts lol there's still way to much to do

Last edited by Kenlilley04; 02-21-2016 at 04:30 PM.
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post #9 of 86 (permalink) Old 12-07-2015, 10:41 PM
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I've got the same rear sway and I had to wrap the bar in teflon tape (same stuff that's used to seal threads on pipe fittings) and then grease to quiet it down. It make a little noise, but at least I don't have to re-grease it monthly now.
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post #10 of 86 (permalink) Old 12-08-2015, 11:16 PM Thread Starter
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Thanks for that advice, I will have to do that, how thick was the tape? Like 2 wraps all the way around?
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