Crash bolts alignment change

[2point0]

I'm glad I stumbled onto this thread. Tonight I picked up a pair of 14mm Eibach eccentric bolts from a friend for cheap. This gives me the option to use crash bolts up top if I really want later on. But I'm happy to hear that toe change is so minimal when adjusting camber as much as you guys are.

Could someone clarify for me that since I'm installing in the lower hole (instructions are for upper...but different car), I will orient the tab opposite the instructions? i.e. tab out for negative camber. I'm sure it'll make more sense when I get in there, just like to know ahead of time.

[celica73]

Originally Posted by 2point0

Could someone clarify for me that since I'm installing in the lower hole (instructions are for upper...but different car), I will orient the tab opposite the instructions? i.e. tab out for negative camber. I'm sure it'll make more sense when I get in there, just like to know ahead of time.

Tab in the opposite direction. It took me a while to convince myself. I also found that the small inner tab was bent to the outside just enough that I couldn't get it all together - it wouldn't fit in the strut hole. I bent the inner tab towards the inside just a hair and it went together right away.

[Xdragonxb0i]

Can anyone give me the part number for oem crashbolt? This is only for the front right?

I'm not sure if I will need them. Since I got the full ground control kit with camber plates and etc.

[2point0]

Originally Posted by Xdragonxb0i

Can anyone give me the part number for oem crashbolt? This is only for the front right?

I'm not sure if I will need them. Since I got the full ground control kit with camber plates and etc.

Not sure of the number, but the "crash bolt" is the lower 14mm strut bolt placed in the upper 16mm hole. With camber plates, the little gain you get from the bolt is likely to be useless.

[ShoGun]

do the crash bolts come stock with the BRZ? If so are they pre-installed or would they come in a plastic package along with the car?

[celica73]

Not included.

[Thrustin]

Just to make sure, are these the correct bolts needed to add camber?




And yeah, it's an old thread and stuff.

[2point0]

Looks right, but I don't know the actual part number offhand. I'm sure there's a thread on here with the service manual page.

But the diameter is right. Use that 14mm bolt in the upper 16mm hole and now there's wiggle room to adjust.

If you're doing this for stock autocross classing, right on. If not, take those back and just get a set of actual camber bolts (eccentric bolts). They will provide more range to adjust and be easier for a shop to set to a certain spec. I put mine in the lower hole so that I'd be pushing inwards slightly less and not worry as much about hitting the spring perch. Of course, now I'm on spacers so it's a moot point.

[Thrustin]

Originally Posted by 2point0

Looks right, but I don't know the actual part number offhand. I'm sure there's a thread on here with the service manual page.

But the diameter is right. Use that 14mm bolt in the upper 16mm hole and now there's wiggle room to adjust.

If you're doing this for stock autocross classing, right on. If not, take those back and just get a set of actual camber bolts (eccentric bolts). They will provide more range to adjust and be easier for a shop to set to a certain spec. I put mine in the lower hole so that I'd be pushing inwards slightly less and not worry as much about hitting the spring perch. Of course, now I'm on spacers so it's a moot point.

It's for C Street.

[Apex_BRZ]

I've never changed alignment specs with a car before.

After installing these bolts, what do you tell the service shop when you bring the car in for alignment? Run as much negative camber as you can get out of the front and align the rear to OEM specs? Anything else?

[was385]

Originally Posted by Apex_BRZ

I've never changed alignment specs with a car before.

After installing these bolts, what do you tell the service shop when you bring the car in for alignment? Run as much negative camber as you can get out of the front and align the rear to OEM specs? Anything else?

I had them max out the camber bolts, run a bit of toe out in the front and a bit of toe out in the rear (1/8" total for each). That last part is personal preference, however I'd definitely recommend maxing out the camber bolts because it's still pretty mild.

[Apex_BRZ]

What kind of increased wear have you seen with the Toe Out adjustments?

I read this on Tire Rack:

A toe setting that is just a little off its appropriate setting can make a huge difference in their wear. Consider that if the toe setting is just 1/16-inch off of its appropriate setting, each tire on that axle will scrub almost seven feet sideways every mile! Extend it out and you'll discover that rather than running parallel to each other, the front tires will scrub over 1/4-mile sideways during every 100 miles of driving! Incorrect toe will rob you of tire life.

While I'd like to add Toe Out while I'm there, I'm concerned about tire wear as well.