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Old 21-04-2012, 06:34 PM   #1
TheMAN
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ABOUT: Lowered BJ alignment specs

Recently, a Club323F member was complaining about premature tyre wear on his car. He has a lowered suspension and the car was aligned using factory Mazda specs. Well it didn't work very well because apparently, you must use a slight toe-out setting in order to stop this. I have no real explanation why except that I know it works for improved handling performance and reduced tyre wear. Mazda's engineers determined these to be the best settings for their turbo BJ model here in the US, which came with a factory lowered suspension (uprated springs and struts). But, there was a goof up in Japan and the car was aligned using standard suspension specs, so uncorrected, excessive tyre wear would result. As a result, North American Mazda dealers were instructed to realign the car using special specs during predelivery inspections.

I found the official memo that I got when I went to the MazdaSpeed training seminar in Houston back in 2002. So now I scanned it so that everyone could use this.
Those of you who have been reading my website will already know that these specs have been there for many years. The others who were at disbelief could now be assured these were given to me by a Mazda training instructor with this PDF:
http://www.protegefaq.net/tsb/MSPalignment.pdf
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Old 22-04-2012, 07:37 AM   #2
project.r.racing
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1. Reduce total toe-in to the following specification.
o Front total toe-in (-1.0 +1.0 mm, -0.04 + 0.04 in, -06' + 6')
o Rear total toe-in (-1.0 +1.0 mm, -0.04 + 0.04 in, -06' + 6')

I guess it is how you read it also though. Toe in would be +X.X, but the specs show to out ie -X.X. It also says to reduce toe in by the follow specs. So it that whatever spec it came from the factory, then remove 1mm? Is it 1mm total, ie 0.5mm each side?

What are the normal BJ specs? +0.7mm per side on front, +0.2mm per side on rear?
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Old 22-04-2012, 10:59 AM   #3
TheMAN
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normal BJ front & rear: 2.04.0mm, 0.08"0.16", 012′024′
MSF/MP3 front & rear: 2.02.0mm, 0.08"0.08", 012'012'
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Old 03-10-2013, 06:41 AM   #4
diepumpkin
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Hi guys, this might be a little off topic for the thread but I need to know if the suspension is the same between a bj323 and a bj 323 sp20? I've found coil overs for the 323 but need to make sure they will fit my sp20! Any help is much appreciated thanks
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Old 03-10-2013, 09:51 AM   #5
Rupewrecht
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Quote:
Originally Posted by diepumpkin View Post
Hi guys, this might be a little off topic for the thread but I need to know if the suspension is the same between a bj323 and a bj 323 sp20? I've found coil overs for the 323 but need to make sure they will fit my sp20! Any help is much appreciated thanks
Yes it's the same, but BJI and BJII have different-sized front swaybar endlinks - but these are easy to buy/swap.
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Old 03-10-2013, 10:11 AM   #6
diepumpkin
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Thanks Dan
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