1998 Bonnie SSEI Engine Mounts

Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's, Olds 98 91-96, Buick Lesabres and Park Avenue 91-96. Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.
Post Reply
MrAdamJ15
LE Member
Posts: 3
Joined: Tue Feb 21, 2017 9:26 pm
Year and Trim: 1998 Pontiac Bonneville SSEI_ZZP-stage#1_#M90
Location: Sturgis, MI

1998 Bonnie SSEI Engine Mounts

Post by MrAdamJ15 »

I am starting to make modifications on the supercharged engine on my Bonneville. Wondering if the Stock engine mounts will be enough or what other people have done for a stronger more solid setup. Im not planning on going too crazy with Modifications much more than 325ish Horsepower. If there is already an existing thread someone please point me in the right direction?
"Not Your Gramps Bonnie"
oldslss
SSE Member
SSE Member
Posts: 121
Joined: Wed Dec 12, 2012 6:31 pm
Year and Trim: 1997 Oldsmobile LSS
Location: Mississauga, Ontario, Canada eh

Re: 1998 Bonnie SSEI Engine Mounts

Post by oldslss »

Never really had an issue with my mounts. Just buy some new ones, fill em with window weld and change them whenever its easiest.
'97 Olds Lss Light Toreador Red Metallic *Totaled March 2014
'97 Olds Lss Med Adriatic Blue Metallic The new project
User avatar
nos4blood70
Certified Bonneville Nut
Certified Bonneville Nut
Posts: 9522
Joined: Mon May 10, 2010 6:11 pm
Year and Trim: 2003 SLE
Location: Chicago, IL

Re: 1998 Bonnie SSEI Engine Mounts

Post by nos4blood70 »

People usually replace the front transmission mount as it tends to let go even at stock power levels. Other than that though, you're fine.
-Car Guy Carl
"Penelope" - 2003 SLE - 250k Miles
"Sydney" - 2000 Honda S2000 - 101k miles
Image
User avatar
95naSTA
Certified Bonneville Nut
Certified Bonneville Nut
Posts: 7087
Joined: Wed May 21, 2008 11:47 pm
Year and Trim: 95 SLE
Location: Philadelphia
Contact:

Re: 1998 Bonnie SSEI Engine Mounts

Post by 95naSTA »

Drill a hole through the front trans mount and put a grade 8 or higher bolt throught it. It'll keep it from pulling apart.

If you want to go beyond that, window weld or urethane fill the passenger torque axis engine mount as mentioned. And Rodney Dickman makes an adjustable dogbone mount for v6 Fieros that is a drop in replacement for the passenger trans dogbone mount. There's nothong easy for the driver's rear trans mount.
Image
95 SLE... a keeper. 241k miles. Low and Slow.
97 BMW 528i
98 Infiniti vq35'd i30: 13.3@104mph, 30MPG Hwy (RIP)
02 Jag X-type
03 BMW M5
05 Chevy Cobalt LS
07 Infiniti G35s 6MT (Sold)
07 Ducati Monster S2R 800 with DS1000 swap
83 Yamaha IT175K
72 Yamaha DS7: '74 RD250 swap, JL chambers

Info on dropping a 92-99: Here.
Post Reply