|
Suspension | Chassis | Brakes -- Sponsored by 949 Racing Relating to suspension, chassis, and brakes. Sponsored by 949 Racing. |
|
Thread Tools | Search this Thread |
07-13-2019, 01:58 PM | #1 |
Junior Member
Join Date: Jun 2018
Drives: 2013 BRZ
Location: Northeast
Posts: 6
Thanks: 0
Thanked 1 Time in 1 Post
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
|
Rear subframe 19mm bolts reusable?
I removed the 2 rear 19mm bolts on the subframe to install a cusco brace, and according to this diagram the bolt are supposed to be replaced - are these torque to yield bolts that should not be reused? I've never seen anyone on the forum mention this.
Also, should these bolts have loctite on them? Mine had red substance on them - I'm not sure what this is. Are these bolts supposed to be lubricated when reaching the 107 ft/lb torque spec? Thanks |
07-13-2019, 02:28 PM | #2 |
Benz Tech
Join Date: Dec 2018
Drives: 2017 BRZ Premium
Location: Oregon
Posts: 580
Thanks: 363
Thanked 562 Times in 308 Posts
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
|
If the torque spec is just 107ft/lb they are not torque to yield.
The one time use is due to that red substance. The applied “loctite” is one time use. Same with any pinch or locking nut and any bolt that is torque to yield. Very few bolts are lubricated prior to installation, I believe I’ve only seen that on head bolts. |
The Following 2 Users Say Thank You to maslin For This Useful Post: | NoHaveMSG (06-10-2022), strat61caster (07-14-2019) |
07-13-2019, 03:34 PM | #3 |
義理チョコ
Join Date: Sep 2014
Drives: a 13 e8h frs
Location: vantucky, wa
Posts: 31,903
Thanks: 52,213
Thanked 36,561 Times in 18,948 Posts
Mentioned: 1108 Post(s)
Tagged: 9 Thread(s)
|
Would you use red, or blue if it was yours? In some cases I feel like red is overkill.
__________________
|
07-13-2019, 04:59 PM | #4 | |
Benz Tech
Join Date: Dec 2018
Drives: 2017 BRZ Premium
Location: Oregon
Posts: 580
Thanks: 363
Thanked 562 Times in 308 Posts
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
|
Quote:
I would never apply loctite in a tube to any of those bolts. I would either run them back in and assume you’re never going to have a problem, or replace the hardware as specified. |
|
07-13-2019, 06:38 PM | #5 |
Weight Weenie
Join Date: Aug 2015
Drives: 15 FR-S
Location: Canada
Posts: 2,590
Thanks: 5,023
Thanked 2,332 Times in 1,348 Posts
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
|
|
07-13-2019, 07:28 PM | #6 | |
義理チョコ
Join Date: Sep 2014
Drives: a 13 e8h frs
Location: vantucky, wa
Posts: 31,903
Thanks: 52,213
Thanked 36,561 Times in 18,948 Posts
Mentioned: 1108 Post(s)
Tagged: 9 Thread(s)
|
Quote:
I mostly switch between the blue, green, and white. I'd probably just clean and reuse the screws for those subframe mounts.
__________________
|
|
07-13-2019, 07:35 PM | #7 |
Benz Tech
Join Date: Dec 2018
Drives: 2017 BRZ Premium
Location: Oregon
Posts: 580
Thanks: 363
Thanked 562 Times in 308 Posts
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
|
Because I have no desire to glue bolts into a car. The stuff that comes on new bolts is dry, it tightens up the tolerance between the fasteners, keeping everything tight along with the tension on the bolt.
I’m not a big fan of liquid loctite. It certainly has its place, but I wouldn’t try to outsmart the engineers that designed the car. If they wanted them loctited in they would specify loctite. Instead they specified a bolt with a coating. I’d either replace the bolts or reinstall and forget about it. I’ve replaced thousands of one time use fasteners, I doubt I’ve used one of the little tubes of loctite in 10 years. |
07-13-2019, 08:05 PM | #8 |
義理チョコ
Join Date: Sep 2014
Drives: a 13 e8h frs
Location: vantucky, wa
Posts: 31,903
Thanks: 52,213
Thanked 36,561 Times in 18,948 Posts
Mentioned: 1108 Post(s)
Tagged: 9 Thread(s)
|
The main reason factory screws come pre-coated is for quality control in the assembly process. IRL, a properly-chosen, carefully-applied liquid adhesive is just fine. That being said, I have a couple tubes that are probably 20 years old. Should probably just toss them.
__________________
|
The Following 3 Users Say Thank You to Ultramaroon For This Useful Post: |
07-13-2019, 11:07 PM | #9 |
Weight Weenie
Join Date: Aug 2015
Drives: 15 FR-S
Location: Canada
Posts: 2,590
Thanks: 5,023
Thanked 2,332 Times in 1,348 Posts
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
|
I agree, nothing wrong with a liquid adhesive used sparingly.
|
The Following User Says Thank You to new2subaru For This Useful Post: | Ultramaroon (07-14-2019) |
07-14-2019, 12:13 AM | #10 |
Senior Member
Join Date: Feb 2018
Drives: 2017 Subaru BRZ Limited
Location: Denver, CO
Posts: 619
Thanks: 3,059
Thanked 595 Times in 300 Posts
Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
|
As @maslin pointed out these are not torque to yield, they are marked one-time use due to the pre-applied coating. I re-used mine, just cleaned them up on a wire wheel and applied liquid blue loctite prior to torquing to spec. I no longer have the link handy but had read a spec sheet showing the pre-applied coating is most similar in specifications to blue loctite, despite being red in color. Do NOT use red loctite on your subframe bolts.
If you are installing something like the whiteline KDT922, if you can get them you want the subframe bolts from the TS. They are identical except having a slightly longer overall length to ensure full thread engagement between the subframe and body when running bushing inserts. The TS comes with the STI bushing inserts (which look identical to the whiteline KDT922) pre-installed, so has a lengthened bolt. I tried to acquire them and found it impossible because the parts counter people at the dealership are borderline retarded and refuse to order on part numbers and I didn't have a valid TS VIN number to give them. The TS bolts aren't essential, thousands of people have installed subframe bushing inserts and reused their factory bolts, but since you seem concerned, this would be a route to replace the bolts with OEM spec bolts that have pre-applied coating and also get the longer length killing two birds with one stone. |
The Following User Says Thank You to Tristor For This Useful Post: | maslin (07-15-2019) |
07-14-2019, 12:49 AM | #11 |
ProCrastinationConsultant
Join Date: Sep 2013
Drives: '14 Ranger, '18 Tacoma 4Dr LB
Location: chicago-ish
Posts: 11,330
Thanks: 35,240
Thanked 13,673 Times in 6,781 Posts
Mentioned: 98 Post(s)
Tagged: 0 Thread(s)
|
Parts counters are almost as bad as the DMV
__________________
"The time you enjoy wasting is not wasted time"
|
The Following User Says Thank You to soundman98 For This Useful Post: | Tristor (07-14-2019) |
07-14-2019, 03:22 AM | #12 |
Thanks
Join Date: Apr 2013
Drives: BRZ
Location: NY
Posts: 4,163
Thanks: 5,989
Thanked 3,100 Times in 1,498 Posts
Mentioned: 38 Post(s)
Tagged: 3 Thread(s)
|
Their prices are much worse.
__________________
|
The Following User Says Thank You to ZionsWrath For This Useful Post: | soundman98 (07-15-2019) |
07-14-2019, 10:34 AM | #13 |
Senior Member
Join Date: Feb 2018
Drives: 2017 Subaru BRZ Limited
Location: Denver, CO
Posts: 619
Thanks: 3,059
Thanked 595 Times in 300 Posts
Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
|
Also, I realize you didn't ask, and the instructions don't say, but just to clear it up you should definitely get an alignment after installing the bushing inserts. The inserts will forcibly realign your subframe to be centered on the body, which may not be where it was positioned from the factory and this will affect both camber and toe in the rear.
|
The Following 4 Users Say Thank You to Tristor For This Useful Post: |
|
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
FS: Perrin 19mm Adjustable Rear Sway Bar | yip | Brakes, Suspension, Chassis | 7 | 03-13-2017 01:43 AM |
torque specs for front and rear subframe bolts | mokinbird87 | Suspension | Chassis | Brakes -- Sponsored by 949 Racing | 15 | 06-17-2015 02:54 PM |
REVIEW | DC Sports rear subframe brace / rear subframe lateral brace | mav1178 | Suspension | Chassis | Brakes -- Sponsored by 949 Racing | 7 | 04-10-2014 08:59 PM |
Rear swaybar mount reinforcement. How important is it for 19mm bar? | mike the snake | Suspension | Chassis | Brakes -- Sponsored by 949 Racing | 1 | 11-04-2013 06:50 PM |