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Old 06-12-2014, 11:39 PM   #1
sheekeebut
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Post Tein Street Basis Coilover Install - 2007 Yaris Sedan NCP93 Stock

Tein Street Basis Coilover Install - 2007 Canadian Yaris Sedan NCP93 Stock

My very first real modification to the Yaris.

I intend to document as much of it as I can, for the simple purpose of providing that extra bit of information one would like to have before making a decision to modify the car. This all arose from my futile attempts at obtaining a downloadable digital copy of the hard copy documents shipped with the product.

Reason for coilovers before anything else: Just to test the effects of modestly lower ride height and stiffer street dampers.

"Drive the way the car wants to drive and the speed follows", I've been told. We'll see about that.

Some reading to get myself familiar:
http://www.tein.com/products/street_basis.htm
http://www.tein.co.jp/e/products/street_basis.html
http://www.tein.com/products/street_...rice_list.html
TOYOTA YARIS NCP93L 07-10 4dr GSL70-11AS2
Notice in the link above that this product uses the exact same part number as that for the NCP91 hatchback

Let me begin with the most exciting thing of all today


Opened (first thing I always look for is the documentation, which was found tucked just under this strut assembly.)

Yes, that's a small chip in the thread of one of the Height Adjustment System (H.A.S.) bases. I don't think I should be too concerned.







More to come, still need to get the camber bolts.

Last edited by sheekeebut; 06-13-2014 at 12:27 AM.
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Old 06-13-2014, 07:11 AM   #2
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what is this
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Old 06-13-2014, 07:37 AM   #3
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what is this
1.5, I don't know why, but it seems to work now. Strange thread, though, with you looking like OP
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Old 06-13-2014, 07:43 AM   #4
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It just doesn't make sense. I had a nice little post going, and next thing you know it doesn't even show up. I just hope I haven't ticked off the mods up to now. I must have made a huge mess.
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Old 06-13-2014, 08:07 AM   #5
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I'm going to put together a scan of the documentation, as it is extremely useful to prospective coilover purchasers. How should I make it available? pdf attachment?
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Old 06-13-2014, 08:10 AM   #6
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Old 06-13-2014, 08:11 AM   #7
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Quote:
Originally Posted by sheekeebut View Post
I'm going to put together a scan of the documentation, as it is extremely useful to prospective coilover purchasers. How should I make it available? pdf attachment?
Most threads I've seen use a combination of both pdf and html text as pdf makes it easy to download and html makes it easy to see instantly on the web.
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Old 06-13-2014, 09:00 AM   #8
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Most threads I've seen use a combination of both pdf and html text as pdf makes it easy to download and html makes it easy to see instantly on the web.
I actually meant the installation manual. I'm pretty sure I'll follow your suggestion when this is all installed, though.
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Old 06-13-2014, 01:30 PM   #9
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From our forums, in the download section:

http://www.microimageonline.com/down..._Guide_v1b.pdf

http://www.microimageonline.com/down...agram_Tein.pdf

Don't forget to re-use your strut bearings (or buy new ones), they get moved over to the new struts.
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Old 06-13-2014, 01:39 PM   #10
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Originally Posted by cali yaris View Post
From our forums, in the download section:

http://www.microimageonline.com/down..._Guide_v1b.pdf

http://www.microimageonline.com/down...agram_Tein.pdf

Don't forget to re-use your strut bearings (or buy new ones), they get moved over to the new struts.
Understood, and thanks for the extra documentation. I hope to complement that with what I ended up with. I have a Japanese installation manual with a meaty English section.
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Old 06-13-2014, 02:45 PM   #11
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and use a spring compressor, for safety.
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Old 06-13-2014, 02:49 PM   #12
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and use a spring compressor, for safety.
Wouldn't want to lose an eye... Or a face.
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Old 06-13-2014, 06:09 PM   #13
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Scanned the instructions.

English starts on page 16 (of pages marked on manual), but there are some interesting bits to look at in the Japanese section, like torque figures and such. Don't worry, they're in English recognisable characters. In fact they almost stick out.
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Old 06-13-2014, 10:23 PM   #14
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Awesome, have never seen the English instructions haha.

Love my Teins.
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Old 06-16-2014, 03:39 AM   #15
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I just realised I've never, EVER, taken shots of my car. Brace yourselves everyone, for the shock, of stock:





Sent from my Nexus 7 using Tapatalk
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Old 06-17-2014, 09:03 AM   #16
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I've got a new set of rims and tires. I'll install them tonight.

My new concern is the rear alignment when this is lowered. This is purely daily driver, no track. Will the lowering (whatever I end up with after following Tein's instructions, predicted about -1.7 inches all around) necessitate rear toe and camber adjustment for improved (over stock) handling and minimal wear? Or am I stuck with the tradeoff of one sacrificing the other?

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Old 06-17-2014, 11:08 AM   #17
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^ There is no rear alignment adjustment and it won't change when you lower the car. The front won't change much either, but can be adjusted.

You'd have to use a shim kit to change the rear specs to your liking.
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Old 06-21-2014, 12:35 AM   #18
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Doing a little bit of cramming before installation tomorrow. Doing both coilovers and the wheels. Didn't get the chance to try out just the wheels first.

Hoping to find a ride height appropriate for what may be 205/50R15 x 6.5 +38 ET. I thought they were +45, until I checked behind the spokes... Looks like a little "38" was stamped into the rim after coat. I'll do measurements before mounting them.

As for tonight, I've just gone through all above manuals, plus this one, which is fantastic for figuring out how to get at those strut towers:
https://drive.google.com/file/d/0B4z...it?usp=sharing

Amazing, you don't even need to know any specific language to read it. The illustrations speak much better.

Pictures on Sunday, all. Look forward to them!
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