HELP i think i cross threaded subframe mounts - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

autoCAR · 10-21-2013, 08:03 PM

I'm about to cry. I was hand tightening the bolts that hold the rear subframe after installing the rear whiteline bushings n it just stopped. I can't turn it at all after about a half inch. I took the bolt out and there's metal shavings on it. Omg what do I do

TOZER · 10-21-2013, 08:10 PM

The car is destroyed. Might as well sell it

ProTekk · 10-21-2013, 08:21 PM

http://www.ehow.com/how_7571380_repa...ded-bolts.html

Sent from my SGH-M919 using Tapatalk

7thgear · 10-21-2013, 08:34 PM

probably stripped it, if you don't have the tools for repair, take it to a shop

SonnyBRZ · 10-21-2013, 08:35 PM

You can try a long tap so you don't have to remove anything.

I actually bought one of below to clean up a tread, mind you this tap took a few weeks to come in:

http://www.ebay.com/itm/271151671881...4.m1497.l2648#

Hope that helps.

7thgear · 10-21-2013, 08:39 PM

the problem is not even that you stripped it

its why you stripped it

the answer to which is that when you were re-installing it, there was uneven torsion on the frame.. or similar and the subframe wasn't perfectly aligned with the chassis

this is a real pain in the ass. Not a problem under shop conditions where the frame is evenly supported, but if you were doing this on jackstands, there is a good chance you had it mis-aligned as you were torqueing it down.

autoCAR · 10-21-2013, 08:49 PM

thanks, I'm going to try to get a tap now. I don't think local parts store will have this size. I'm gonna have to bring it to a shop to get them to fix it I think.

autoCAR · 10-21-2013, 08:50 PM

Quote:

Originally Posted by autoCAR

thanks, I'm going to try to get a tap now. I don't think local parts store will have this size. I'm gonna have to bring it to a shop to get them to fix it I think.

car is on jack stands, that probably why it happend. Only back is up which is messing everything up

SonnyBRZ · 10-21-2013, 09:44 PM

Exactly as what 7thgear have said.

Once you have the bolts undone, the subframe "misaligns" slightly. I had to use jacks to bring up the subframe / loosen the other bolts to align it.

Make sure you just use your fingers to get the bolts in and have at least a few turns before using a ratchet. You could look into the hole to see if it is align or not, but more importantly, go by feel and that is using your hands to get threads started. If it doesn't go in, stop and try to realign.

Good luck and hope you get your car fixed soon.

autoCAR · 10-22-2013, 12:55 PM

thanks for the info guys. Cars at a shop now, the mechanic said its actually not that big of a deal, and that he fixed those threads before. I got my fingers crossed that I get my car back quickly with no complications.

autoCAR · 10-23-2013, 06:31 PM

just an update, cars fixed n I'm driving it. Mechanic said I'm lucky, 2\3rds of the threads were still good. He removed the whole subframe retapped the sheeread threads, reinstalled everything w the bushings, and he said "do yourself a favor, don't ever take these bolts out again"

NemeGuero · 10-23-2013, 06:45 PM

what'd he charge you for all that? just curious

RallySport Direct · 10-24-2013, 12:13 PM

Every time I do the rear subframe bushings I have to be super careful putting the bolts back in, and always double check the alignment of the subframe. For some reason these particular bolts seem to want to cross thread more than any other bolt on the car haha. Glad you got it fixed, and this is the exact reason I have plenty of taps and thread chasers whenever I work on something lol.

This should be a good warning to anyone doing these bushings. Just be very careful putting those bolts back in

Thanks,
Rick

autoCAR · 10-24-2013, 06:57 PM

Quote:

Originally Posted by NemeGuero

what'd he charge you for all that? just curious

he is a friend of the family, and he saw I was genuinely upset about the whole thing, so he didn't charge me. I tried leaving him 100 bucks but he didn't take it

10-21-2013, 08:34 PM	#4
7thgear i'm sorry, what? Join Date: Jan 2012 Drives: Canada Location: I rock a beat harder than you can beat it with rocks Posts: 4,399 Thanks: 357 Thanked 2,508 Times in 1,268 Posts Mentioned: 40 Post(s) Tagged: 3 Thread(s)	probably stripped it, if you don't have the tools for repair, take it to a shop __________________ don't you think if I was wrong, I'd know it?

10-21-2013, 08:39 PM	#6
7thgear i'm sorry, what? Join Date: Jan 2012 Drives: Canada Location: I rock a beat harder than you can beat it with rocks Posts: 4,399 Thanks: 357 Thanked 2,508 Times in 1,268 Posts Mentioned: 40 Post(s) Tagged: 3 Thread(s)	the problem is not even that you stripped it its why you stripped it the answer to which is that when you were re-installing it, there was uneven torsion on the frame.. or similar and the subframe wasn't perfectly aligned with the chassis this is a real pain in the ass. Not a problem under shop conditions where the frame is evenly supported, but if you were doing this on jackstands, there is a good chance you had it mis-aligned as you were torqueing it down. __________________ don't you think if I was wrong, I'd know it?

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10-21-2013, 08:10 PM	#2
TOZER Senior Member Join Date: Apr 2013 Drives: 2013 Whiteout FR-S Location: Brantford,Ontario Posts: 271 Thanks: 32 Thanked 93 Times in 61 Posts Mentioned: 10 Post(s) Tagged: 1 Thread(s)	The car is destroyed. Might as well sell it

10-23-2013, 06:45 PM	#12
NemeGuero Banned Join Date: Aug 2012 Drives: FR-S Location: Seattle, WA Posts: 459 Thanks: 42 Thanked 122 Times in 95 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	what'd he charge you for all that? just curious

10-24-2013, 12:13 PM	#13
RallySport Direct Join Date: Apr 2012 Drives: 2014 Widebody Cosworth FR-S Location: Salt Lake City, Utah Posts: 4,542 Thanks: 205 Thanked 1,199 Times in 554 Posts Mentioned: 38 Post(s) Tagged: 0 Thread(s)	Every time I do the rear subframe bushings I have to be super careful putting the bolts back in, and always double check the alignment of the subframe. For some reason these particular bolts seem to want to cross thread more than any other bolt on the car haha. Glad you got it fixed, and this is the exact reason I have plenty of taps and thread chasers whenever I work on something lol. This should be a good warning to anyone doing these bushings. Just be very careful putting those bolts back in Thanks, Rick

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