SPC Camber Bolt Issue

[Horrid_Funk]

Originally Posted by Leonardo

81305 14mm is for the top. It does not work in the bottom. 12mm 81250 is for the bottom.

That's incorrect. 81305 is for the bottom, 81280 is for the top. I am currently running it this way and the instructions say to replace the bottom bolt. See here:

http://www.spcalignment.com/instruct...05-INS_WEB.pdf

[jamal]

Originally Posted by Leonardo

No. no. no. 81305 is for the top. The tab on the washer has to fit in the hole, it does not on the bottom. Yes 81305 fits in the bottom hole, but without enough extra room for adjustment of the lobe.

I have 3 sets of 81305. And a set of 81250. They work as I stated...

The shank of the bolt plus the tab on the washer is the same width as the cam. So if the cam is 14mm and fits in the lower hole, then it should work with the washer in place if you install them properly. I have a set of the 81260s and they go in the smaller 14mm strut holes on my car, with the tabbed washer, just fine.

With the smaller 12/14mm bolt in the larger 16mm upper hole you have a lot of free play between everything which is not great.

81260 = kca414 = 81305 = 12mm bolt with 14mm cam and they go in the lower hole
81280 = kca416 = 14mm bolt with 16mm cam and they go in the upper hole

[Richard_BRZ]

Originally Posted by Leonardo

Ill get pics with my micrometer. I just went through the instsll, and had to order different ones to get them to work in the lower hole.

I just installed 81305 10 minutes ago, went in the bottom hole perfectly with a decent amount of camber keeping the stock 16mm on top.


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[churchx]

Hmm, but is there 12 or 13mm bolt with 16mm cam? I guess such might provide more adjustment range at expense of reduced strength, but that might be acceptable compromise to some?

[gpvecchi]

So, with lower camber bolt, it's better 14 mm stock bolt or another camber bolt on top?

[Leonardo]

Ok... I want to start by saying that I am sorry for being so stubborn and incorrect to:

@Horrid Funk & @jamal

81305 fits in the bottom. I read so much conflicting data... Ahhh, but there is no excuse for spreading false info.

I was wrong - my bad!



Here is my car with 81305 top and 81250 bottom. If my rear is -2.2, Im guessing i have -3 front.



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[Leonardo]

Better pics...
18x8 +35 with 215/40 front.

[finch1750]

Originally Posted by Leonardo

Ok... I want to start by saying that I am sorry for being so stubborn and incorrect to:

@Horrid Funk & @jamal

81305 fits in the bottom. I read so much conflicting data... Ahhh, but there is no excuse for spreading false info.

I was wrong - my bad!



Here is my car with 81305 top and 81250 bottom. If my rear is -2.2, Im guessing i have -3 front.

You might want to go back and edit the incorrect posts in case someone doesn't finish reading the thread

[Horrid_Funk]

Originally Posted by Leonardo

Ok... I want to start by saying that I am sorry for being so stubborn and incorrect to:

@Horrid Funk & @jamal

81305 fits in the bottom. I read so much conflicting data... Ahhh, but there is no excuse for spreading false info.

I was wrong - my bad!



Here is my car with 81305 top and 81250 bottom. If my rear is -2.2, Im guessing i have -3 front.



via Imgflip Meme Generator

via Imgflip Meme Generator

No worries man Running it that way those bolts are both 2mm smaller than what I'm running, so it looks like you're getting tons of camber out of them. Idk how safe that is but that's more than I've seen anyone get from camber bolts.

[Petah78]

Bringing this back up from the dead. I know there are a couple ways to use camber bolts:

1. 81305/81260 can be used in the bottom hole, OEM 14mm crash bolt (stock lower hole bolt) can then be moved to the upper hole.

2. 81280 in the upper, 81305/81260 in the lower hole.

I believe that ether option will work but wouldn’t option 2 be less prone to slipping? 82180 is a camber/lobed bolt meaning so it’s not solely relying on pressure (like the oem crash bolt) to keep it in place? And does anyone know the torque spec to the OEM crash bolt if i elected to use option 1?

[churchx]

"OEM crash bolt" is normal 14mm bolt used in 16mm bolt hole for some adjustment slack gain. Maybe such naming may confuse that it's in some way special? It's not, and i guess somewhere in service manuals it's torque value should be mention.
As for option 1 or 2 .. i'd rather go for 2, but for different reason. Camberbolts are relatively (to other camber adjustment means or alignment job cost) cheap, so not much to save of not getting another camberbolt pair, and at least for me camberbolts in both holes (I used WL's KCA416 in upper though) allowed for slightly more maxed out camber then camberbolt in lower & relocated OE bolt in upper.

[RToyo86]

Those bolts are to be torqued to 114 foot pounds.
I installed 81305 on the lower and the instructions specify lower torque around 100 if memory serves me correctly.

I have 81305 lower, crash/lower bolt up top. I ended up with -2.3° even on both sides.
For me it was convenience at the time and goals when I ordered my original bolt. I was only after small bump in camber, but later wanted more. The lower bolt sitting in the garage is an easy swap.

If you have specific camber goals, two adjustable bolts makes sense. They're cheap. You still have your stock bolts if needed.

[Petah78]

Thanks for the reply. I ran 2 sets of bolts in my 2010 Acura before so i will likely run 2 sets for the BRZ. I don't plan to lower my car much so i am hoping to max out camber with what i can with bolts. Thanks for the replies.