Loose bolt in engine/transmission assembly? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Oxyg3n · 08-29-2019, 07:42 PM

I randomly decided to take a look at my engine bay today and noticed a bolt that appears loose where I assume the transmission connects to the engine itself. I do not have the right tools to check if it is actually loose, can anyone shed some light if this is anything serious that could be a problem for concern?

Thinking about taking it to the dealership so they can double check all the bolts, since the engine was out of my car @5k miles for service.

Thanks.

Tonrogs · 08-29-2019, 07:49 PM

That bolt definitely should not be sticking out like that. 14mm, tighten it up or bring it somewhere. Have whomever check all are torqued down correctly.
That bolt is helping to hold the transmission to the engine.

new2subaru · 08-29-2019, 09:11 PM

The engine was out of your car at 5k for service? What happened at 5k?

Grady · 08-29-2019, 09:38 PM

Engine was out..... Technician F'ed up and forgot to tighten that bolt. I would have them re-torque all the bolts and do a good inspection.

Edit.
Make sure it is documented so if any quality issues come up in the future.

Oxyg3n · 08-29-2019, 09:48 PM

Indeed it was loose, after the car cooled down I was able to finger tighten it back for now.

And yes, I had a CEL at 5k so the engine was out to perform fixes. The car is now at 21k.

NCtoBRZ · 08-29-2019, 09:52 PM

Quote:

Originally Posted by new2subaru

The engine was out of your car at 5k for service? What happened at 5k?

Based on their post history, a valve adjustment was needed.

In regards to the loose bolt OP... if you don’t have the tools and mechanical confidence to address the issue, let the dealership deal with it and ask that they recheck all bolts. Bolts such as that one that hold the engine and transmission together are quite vital.

humfrz · 08-29-2019, 10:01 PM

Meanwhile, I suggest you just snug the bolt up. Snug = hand tight then 1/2 turn more with an open or box end wrench.

humfrz

new2subaru · 08-29-2019, 11:26 PM

Quote:

Originally Posted by humfrz

Meanwhile, I suggest you just snug the bolt up. Snug = hand tight then 1/2 turn more with an open or box end wrench.

humfrz

But after seeing something so obvious you’d want them to go over anything that was touched. That’s really sloppy!

Butterballz · 08-30-2019, 12:54 AM

Thank god for this post cause I got OCD and checked my transmission bolts after getting a TOB repair done by the dealership. One of my transmission bolts was loose sticking out an inch, I'm missing a transmission bolt on the left side that bolts into the cover, the bottom transmission bolt that goes through the same cover came loose at one point cause the cover fell down and interfered with my steering rack, and the best part was that they didn't even mount the big ground wire that bolts on the bottom starter/transmission bolt.

Epic fail.

humfrz · 08-30-2019, 01:28 AM

Quote:

Originally Posted by new2subaru

But after seeing something so obvious you’d want them to go over anything that was touched. That’s really sloppy!

True. My post followed the post by @NCtoBRZ 's post where he suggested that the OP take the car back to the dealer for a complete checkup -

humfrz

Oxyg3n · 08-30-2019, 02:29 AM

Quote:

Originally Posted by Butterballz

Thank god for this post cause I got OCD and checked my transmission bolts after getting a TOB repair done by the dealership. One of my transmission bolts was loose sticking out an inch, I'm missing a transmission bolt on the left side that bolts into the cover, the bottom transmission bolt that goes through the same cover came loose at one point cause the cover fell down and interfered with my steering rack, and the best part was that they didn't even mount the big ground wire that bolts on the bottom starter/transmission bolt.

Epic fail.

Jeez it sounds like you have a ton of loose bolts. Hopefully you can get them all fixed up. I better find all the bolt locations and check my other ones. I wonder if the techs just forgot to tighten them or once they are loosened and re-tightened, they just don't hold up as well through usage and rough shifts..

Whats worst is that today, August 29th, marks exactly 3 years since the day I purchased the car

Tcoat · 08-30-2019, 06:28 AM

Quote:

Originally Posted by Butterballz

Thank god for this post cause I got OCD and checked my transmission bolts after getting a TOB repair done by the dealership. One of my transmission bolts was loose sticking out an inch, I'm missing a transmission bolt on the left side that bolts into the cover, the bottom transmission bolt that goes through the same cover came loose at one point cause the cover fell down and interfered with my steering rack, and the best part was that they didn't even mount the big ground wire that bolts on the bottom starter/transmission bolt.

Epic fail.

How did your car start without te ground wire attached?

And no you don't have fucking OCD. Learn what OCD is before misapplying the term.

Grady · 08-30-2019, 09:43 AM

Quote:

Originally Posted by Tcoat

And no you don't have fucking OCD. Learn what OCD is before misapplying the term.

Maybe he did check the bolts four times for the fifth time?

Butterballz · 08-30-2019, 10:38 AM

Quote:

Originally Posted by Tcoat

How did your car start without te ground wire attached?

And no you don't have fucking OCD. Learn what OCD is before misapplying the term.

Jeez rough morning? Obviously I’m not saying OCD in that manner but anyways. I don’t know how my car started. Maybe the hanging ground bracket was touching the chassis. Are you implying I was imagining the ground bracket wasn’t bolted?

08-29-2019, 07:42 PM	#1
Oxyg3n Senior Member Join Date: Oct 2015 Drives: 2017 BRZ - WRB Location: Bay Area Posts: 319 Thanks: 115 Thanked 208 Times in 108 Posts Mentioned: 2 Post(s) Tagged: 1 Thread(s)	Loose bolt in engine/transmission assembly? I randomly decided to take a look at my engine bay today and noticed a bolt that appears loose where I assume the transmission connects to the engine itself. I do not have the right tools to check if it is actually loose, can anyone shed some light if this is anything serious that could be a problem for concern? Thinking about taking it to the dealership so they can double check all the bolts, since the engine was out of my car @5k miles for service. Thanks.

08-29-2019, 07:49 PM	#2
Tonrogs Senior Member Join Date: Apr 2018 Drives: 2014 BRZ Limited, Satin White Pearl Location: WI, 53593 Posts: 106 Thanks: 10 Thanked 40 Times in 30 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	That bolt definitely should not be sticking out like that. 14mm, tighten it up or bring it somewhere. Have whomever check all are torqued down correctly. That bolt is helping to hold the transmission to the engine. __________________ '14 SWP BRZ 6MT \| FBM built 9:1cr engine w/ GTX3076R Turbo \| Mazworx CD009 trans swap \| EcuTek \| Jackson Racing Dual Oil Cooler/Radiator \| SPAL fans \| JDL 3" Dual Resonated OP/FP \| Perrin 3" \| Radium Dual Cans \| 18" Rota Titans \| M85 3.73 diff \| DSS 1k axles \| And more....too much more....ugh.

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08-29-2019, 09:11 PM	#3
new2subaru Weight Weenie Join Date: Aug 2015 Drives: 15 FR-S Location: Canada Posts: 2,584 Thanks: 5,015 Thanked 2,330 Times in 1,346 Posts Mentioned: 12 Post(s) Tagged: 0 Thread(s)	The engine was out of your car at 5k for service? What happened at 5k?

08-29-2019, 09:48 PM	#5
Oxyg3n Senior Member Join Date: Oct 2015 Drives: 2017 BRZ - WRB Location: Bay Area Posts: 319 Thanks: 115 Thanked 208 Times in 108 Posts Mentioned: 2 Post(s) Tagged: 1 Thread(s)	Indeed it was loose, after the car cooled down I was able to finger tighten it back for now. And yes, I had a CEL at 5k so the engine was out to perform fixes. The car is now at 21k.

08-29-2019, 10:01 PM	#7
humfrz Senior Member Join Date: May 2013 Drives: 2013 FR-S, white, MT Location: Puyallup, WA Posts: 29,866 Thanks: 28,787 Thanked 31,813 Times in 16,424 Posts Mentioned: 708 Post(s) Tagged: 2 Thread(s)	Meanwhile, I suggest you just snug the bolt up. Snug = hand tight then 1/2 turn more with an open or box end wrench. humfrz

08-30-2019, 12:54 AM	#9
Butterballz Senior Member Join Date: Nov 2017 Drives: Black FRS Location: California Posts: 146 Thanks: 3 Thanked 27 Times in 19 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Thank god for this post cause I got OCD and checked my transmission bolts after getting a TOB repair done by the dealership. One of my transmission bolts was loose sticking out an inch, I'm missing a transmission bolt on the left side that bolts into the cover, the bottom transmission bolt that goes through the same cover came loose at one point cause the cover fell down and interfered with my steering rack, and the best part was that they didn't even mount the big ground wire that bolts on the bottom starter/transmission bolt. Epic fail.

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