Solid Subframe Bushing install - Pegasus Review - Page 5 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

2012LS3VERT · 12-27-2016, 10:11 AM

Quote:

Originally Posted by hammdo

I had mine on 3 months and developed a squeak under 20 mph. I had the hotchkis connector on so it really limited the movement, but the bushings settled and the bolts started to back out. Caught mine before the bolts fully backed out. Torqued to 100ft lbs and checked them over 3 weeks. I now check those often since I do road race. I don't believe it's an issue, just that they do settle and should be checked after putting the car through its paces...

-Don

Torque spec for a Grade 10.9 M14 bolt is 165 lb-ft dry.

hammdo · 12-27-2016, 10:46 AM

I'll need to verify my torque specs then for sure. I was told 100-110 ft lbs would work (I think the service manual said 110 ft lbs for stock)... Pfadts are 100 ft lbs torqued for solid aluminum. I happen to have ADMs version of the bushings. What do you torque your solids too?

Did do mine yesterday (at my initial torque specs) and tight as a drum still after initial retorque...

Thanks for the update!

-Don

SLY5ACE · 12-28-2016, 09:27 AM

do your solid sub frame bushings make any noise, mine do a little bit on stops

hammdo · 12-28-2016, 10:11 AM

If you're asking about mine, little to none, but, I hear more noise with the delrins in the diff while slowing. Before the delrins, very little noise...

-Don

dentnshell · 12-28-2016, 11:59 AM

Quote:

Originally Posted by SLY5ACE

do your solid sub frame bushings make any noise, mine do a little bit on stops

I have not heard a peep.

2012LS3VERT · 12-28-2016, 01:24 PM

Quote:

Originally Posted by SLY5ACE

do your solid sub frame bushings make any noise, mine do a little bit on stops

What you are hearing is either 1: loose subframe bushing bolts, see above torque spec, or 2: (most likely) you are hearing something that was hidden before with the stock bushings.

2012LS3VERT · 12-28-2016, 01:26 PM

Quote:

Originally Posted by hammdo

I'll need to verify my torque specs then for sure. I was told 100-110 ft lbs would work (I think the service manual said 110 ft lbs for stock)... Pfadts are 100 ft lbs torqued for solid aluminum. I happen to have ADMs version of the bushings. What do you torque your solids too?

Did do mine yesterday (at my initial torque specs) and tight as a drum still after initial retorque...

Thanks for the update!

-Don

OEM bolts are M14 grade 10.9, so I go to the standard torque chart value of 165 lf-ft.

Mike's 2ss · 12-30-2016, 10:46 AM

Where does one look at your products ?

Quote:

Originally Posted by 2012LS3VERT

Anyone looking at multiple products, or previous customers, should PM me for special deals!

Especially when the new parts we are finalizing are announced!

dentnshell · 12-30-2016, 11:15 AM

It is in his signature.
Pegasuscnc.com

2012LS3VERT · 12-30-2016, 11:53 AM

Quote:

Originally Posted by dentnshell

It is in his signature.
Pegasuscnc.com

Thanks, beat me to it!

DrkPhx · 01-01-2017, 07:46 PM

I just finished installing these and it wasn't bad at all. I used the 2 jack method with a heating torch and it took a little under 4 hours. Took it for a quick test drive and I didn't notice any additional NVH and it definitely felt tighter but certainly not harsh. All in all a great mod and thanks to Pegasus for a great product and excellent service.

wakespeak · 01-02-2017, 12:12 AM

When heating the cradle for the larger rear most bushings, any concern on the fuel tank proximity? Can you heat just the outside half of the cradle to get it to release?

Black_SS10 · 01-02-2017, 03:26 AM

Quote:

Originally Posted by wakespeak

When heating the cradle for the larger rear most bushings, any concern on the fuel tank proximity? Can you heat just the outside half of the cradle to get it to release?

No worries, as long as you lower the cradle enough and do not apply direct heat towards the tank. I installed these bushings using the heat method in my driveway with no problems. Yes you can only heat part of cradle that houses the bushing. But the greater area you can heat the easier and quicker. They really helped make the rear end more solid and predictable.

2012LS3VERT · 01-02-2017, 11:38 AM

Yes, I use the heat method a lot unless the customer specifies they don't want it done that way, or when we are dropping the subframe for other things like a fuel pump and such. No issues with heat near the tank.

12-27-2016, 10:46 AM	#58
hammdo 'It's an experiment' Drives: [COTW 2/09/15] '11 GPI LSA SC Z/LE Join Date: May 2014 Location: Dallas TX Posts: 8,709 View My Garage	I'll need to verify my torque specs then for sure. I was told 100-110 ft lbs would work (I think the service manual said 110 ft lbs for stock)... Pfadts are 100 ft lbs torqued for solid aluminum. I happen to have ADMs version of the bushings. What do you torque your solids too? Did do mine yesterday (at my initial torque specs) and tight as a drum still after initial retorque... Thanks for the update! -Don Last edited by hammdo; 12-27-2016 at 11:04 AM.

12-30-2016, 11:15 AM	#65
dentnshell Drives: Black 2014 2SS Join Date: Apr 2015 Location: Oologah, OK Posts: 454 View My Garage	It is in his signature. Pegasuscnc.com __________________ 2014 L99 2SS. 595HP/571ft-lbs Mods: LSA Conversion 2.5" Upper Pulley, 65# injectors, GPI SS1 Cam, SP Long Tubes, ADM Race Scoop & CAI, NPP exhaust (DIY control), BMR 1" lowering springs, ZL1 Rear Differential / Axles, CF Side Strip / Hood Spear, Tint - Windows / Tails / Sidemarkers, Splash Guards, ADM Boost Gauge, ABL Dashkit, '68 Script Badges, ACS T4 Splitter, ZL1 Rockers from Gary's, Z28 Spoiler, Carbon Fiber Hood Vent, Summer - MRR FS01 Satin Black (10" Front 11" Rear) Winter, pictured-Drag DR 64's Satin Black (9" Front-10" Rear.)

01-02-2017, 12:12 AM	#68
wakespeak Drives: 2020 ZL1 1LE Join Date: Sep 2012 Location: Austin, Texas Posts: 1,377	When heating the cradle for the larger rear most bushings, any concern on the fuel tank proximity? Can you heat just the outside half of the cradle to get it to release? __________________ 2020 ZL1 1LE [Moroso SC Expansion Tank, otherwise stock]

12-28-2016, 09:27 AM	#59
SLY5ACE Drives: 2013 camaro ss 1le supercharged Join Date: Apr 2016 Location: bettendorf, ia Posts: 122 View My Garage	do your solid sub frame bushings make any noise, mine do a little bit on stops

12-28-2016, 10:11 AM	#60
hammdo 'It's an experiment' Drives: [COTW 2/09/15] '11 GPI LSA SC Z/LE Join Date: May 2014 Location: Dallas TX Posts: 8,709 View My Garage	If you're asking about mine, little to none, but, I hear more noise with the delrins in the diff while slowing. Before the delrins, very little noise... -Don

01-01-2017, 07:46 PM	#67
DrkPhx Drives: 2013 Triple Black ZL1 / 2006 TB SS Join Date: Feb 2011 Location: MN Posts: 2,250	I just finished installing these and it wasn't bad at all. I used the 2 jack method with a heating torch and it took a little under 4 hours. Took it for a quick test drive and I didn't notice any additional NVH and it definitely felt tighter but certainly not harsh. All in all a great mod and thanks to Pegasus for a great product and excellent service.

01-02-2017, 11:38 AM	#70
2012LS3VERT Drives: 2012 2SSRS Vert, Black w/M6 Join Date: Jan 2013 Location: Montgomery, AL Posts: 1,265	Yes, I use the heat method a lot unless the customer specifies they don't want it done that way, or when we are dropping the subframe for other things like a fuel pump and such. No issues with heat near the tank.