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Old 04-23-2009, 09:31 AM   #51
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Our 08 has helicoils in all mounts for the front calipers. Took all about about 2 months before that was needed. I've always been really disappointed that the Brembo put the threads right into the aluminum.
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Old 04-23-2009, 09:42 AM   #52
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I should have helicoiled the rest of the mounting holes while I did the fronts but just did one hole. Bump for this thread because it saved me hundreds of dollars when I was about to give up!
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Old 04-23-2009, 12:30 PM   #53
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Quote:
Originally Posted by gills View Post
Ok,

ordered a helicoil thread repair kit.

Size of the bolt for anyone in the future with the same problem:

M12x1.50 fine thread

I'll be receiving it tomorrow morning and will be attempting to install shortly after. I will keep everyone posted.

Tom
Just to be 100% sure, is this thread size the same on front and rear calipers?
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Old 04-23-2009, 02:01 PM   #54
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Quote:
Originally Posted by fullerton View Post
Just to be 100% sure, is this thread size the same on front and rear calipers?
No, the rear calipers are M10x1.5.
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Old 04-23-2009, 02:43 PM   #55
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Thanks, I thought that was the case but I wanted to be sure.
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Old 04-23-2009, 03:44 PM   #56
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This happened to me, but there was enough thread that allowed me to thread the bolt back in. However, I plan on using a helicoil during my next brake job...
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Old 04-23-2009, 03:54 PM   #57
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I have had some input that is is better to re-tap one size larger rather than use a helicoil kit. Any comments on that?
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Old 04-24-2009, 12:29 AM   #58
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Quote:
Originally Posted by fullerton View Post
I have had some input that is is better to re-tap one size larger rather than use a helicoil kit. Any comments on that?
No way. You will just run into the same problem later, steel bolt threading into an aluminum caliper. You are better off with helicoil, no question.
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Old 04-24-2009, 08:04 AM   #59
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Originally Posted by boost junkie View Post
No way. You will just run into the same problem later, steel bolt threading into an aluminum caliper. You are better off with helicoil, no question.
I see your point, but I don't think a helicoil is the best insert to use then. Time-serts would work better (IMO and other's opinions). That way you have a steel sleeve that can seize all it wants to the caliper while your steel bolt remains easily removeable.
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Old 04-24-2009, 08:55 AM   #60
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i did my helicoil yesterday and it went smoothly... im happy to have that issue taken care of
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Old 04-25-2009, 02:32 AM   #61
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Subscribed because im going through this now
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Old 04-25-2009, 08:23 AM   #62
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FWIW- I premptively ordered 12x1.5 and 10x1.5 time-sert kits in carbon steel.

Cost almost $200 for everything, including extra inserts, but it is worth it for the insurance. If I don't use them I can always return them (with a 15% restocking fee )
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Old 07-28-2009, 01:14 AM   #63
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I just stripped out the threads in my right front STi Brembo. Turns out the torque spec in the 05 shop manual is incorrect when it says 114.3 ft-lbs. I should have known it was wrong when the rear was somewhere around 40 ft lbs. Turns out the real torque spec is 80 ft-lbs in the front according to the stickie on IWSTI. Just thought maybe you all would want to know too to prevent the stripping of these threads in the future. I'll be putting in helicoils tomorrow :-(

Here's a link to it: http://www.iwsti.com/forums/gd-braki...per-bolts.html
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Old 07-28-2009, 01:14 AM   #64
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edited

Last edited by eva; 07-28-2009 at 01:15 AM. Reason: oops repost!
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Old 07-28-2009, 01:15 AM   #65
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I just stripped out the threads in my right front STi Brembo. Turns out the torque spec in the 05 shop manual is incorrect when it says 114.3 ft-lbs. I should have known it was wrong when the rear was somewhere around 40 ft lbs. Turns out the real torque spec is 80 ft-lbs (which happens to be 114 Nm) in the front according to the stickie on IWSTI. Just thought maybe you all would want to know too to prevent the stripping of these threads in the future. I'll be putting in helicoils tomorrow :-(

Here's a link to it: http://www.iwsti.com/forums/gd-braki...per-bolts.html
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Old 07-28-2009, 03:56 PM   #66
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The torque spec being wrong in the manual isn't the only problem here. Mine seized all the way around torqued to 85 ft-lbs. The real issue is that they use a steel bolt directly into the aluminum caliper in a high heat and high stress application.

The only true solutions are to use a helicoil/threaded insert or convince Subaru and Brembo to get together and come up with a better setup from the factory. The former is going to be the only attainable choice.
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Old 02-02-2010, 09:36 PM   #67
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Yep, this happened to me too.

Ordered the helicoil kit from amazon for $50 shipped.

Heli-Coil 554412 M12 X 1.5 Metric Kit (18mm length inserts).

*** the front brembo caliper mounting brackets are 20 mm thick, so looks like the 18mm inserts will work great.

Just need to get a 31/64 bit.
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Old 04-14-2010, 01:45 AM   #68
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looks like i need to do this too...blah.
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Old 04-14-2010, 01:55 AM   #69
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Quote:
Originally Posted by JDM Junkyard View Post
looks like i need to do this too...blah.

It's not hard at all. The helicoil kits are reasonable on eBay or Amazon. Search "Perma Coil".
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Old 04-14-2010, 02:05 AM   #70
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i know it's not hard, jsut 1 more thing to do while all my parts are laying around the garage...LOL.

just didn't want to deal with it right now.
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Old 04-15-2010, 06:36 PM   #71
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Quote:
Originally Posted by kursplat View Post
if your worried you could always drill 'em for safety wire while they're out
yeah that'll keep them in there for sure.

ugh, i still have nightmares about hours and hours of twisting safety wire from my open wheel days
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Old 05-22-2010, 02:52 PM   #72
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Quote:
Originally Posted by fullerton View Post
FWIW- I premptively ordered 12x1.5 and 10x1.5 time-sert kits in carbon steel.

Cost almost $200 for everything, including extra inserts, but it is worth it for the insurance. If I don't use them I can always return them (with a 15% restocking fee )
What depth did you order? The Time-Sert inserts can't be shortened (cut) like heli-coils.

I'm in the same situation now with all 8 bolts, and need to order my kits ASAP
.

(Please, I'm desperate..)
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Old 05-22-2010, 05:53 PM   #73
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Measure the mounting tabs for thickness??? If the time-certs can't be cut then you MUST get one that's thinner than the mounting tab. Just the longest one that's still thinner and call it a day.

I think the time-certs are overkill though and not worth about double the price or more.

I got my kits on eBay for about $28 a kit or so. Search Perma-coil...
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Old 05-24-2010, 03:22 PM   #74
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Quote:
Originally Posted by SEBBARU View Post
What depth did you order? The Time-Sert inserts can't be shortened (cut) like heli-coils.

I'm in the same situation now with all 8 bolts, and need to order my kits ASAP
.

(Please, I'm desperate..)
pming you.
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Old 05-24-2010, 04:25 PM   #75
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Originally Posted by fullerton View Post
pming you.
Is it a secret??
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