PT Cruiser Forum  
Advertisements
       

Go Back   PT Cruiser Forum > 2.4L Turbo Forums > General Turbo Discussions

PT Cruiser Forum

Advertisements
mid- motor mount bolt

 
Like Tree9Likes

Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 27 Mar 2016, 09:05 am
Fresh Cruiser
 
Join Date: Mar 2016
Posts: 2
Default mid- motor mount bolt

Luv my lil turbo, but it suddenly developed a front shuddering on acceleration. Quickly found the upper mount needed replacing, but a short test drive found the problem persisted. Went to check that damn mid-engine mount and the torx bolt fell into my hand. The dealership said 46 were on backorder and I needed to buy a minimum of 4. Went online to find tha M14-1.75x85 case hardened torx type bolt and found nothing, needed the Vin to find the exact bolt sizing since apparently used 16 different bolts. Has anyone got one they are willing to sell at premium or a source? Dealer also told me the backorder would be at least a month out.

Last edited by willy13; 27 Mar 2016 at 09:07 am. Reason: more info
Reply With Quote
  #2 (permalink)  
Old 27 Mar 2016, 02:32 pm
2step's Avatar
Senior Cruiser
 
Join Date: Oct 2004
Location: New Braunfels, Texas.
Posts: 1,672
Default Re: mid- motor mount bolt

A fellow I know on another Cruiser forum drilled and tapped that center mount for a bigger, thicker bolt. If I recall, he may have broken the "bigger" bolt and drilled and tapped again for the next size larger.

If you pin down the size of the stock bolt, you should be able to buy a replacement from a company such as Fastenal right off the 'net fairly quickly.
willy13 likes this.
Reply With Quote
  #3 (permalink)  
Old 27 Mar 2016, 04:05 pm
NitroPT's Avatar
Obsessed Cruiser
 
Join Date: Jun 2012
Location: USA kalyfornia
Posts: 15,636
Default Re: mid- motor mount bolt

Quote:
Originally Posted by 2step View Post
A fellow I know on another Cruiser forum drilled and tapped that center mount for a bigger, thicker bolt. If I recall, he may have broken the "bigger" bolt and drilled and tapped again for the next size larger.

If you pin down the size of the stock bolt, you should be able to buy a replacement from a company such as Fastenal right off the 'net fairly quickly.
I have read something to what you mentioned can't remember where?
That was a procedure that I think ED Peters once posted or told someone ( I think an employee at Modern Performance that once owned a PT?) many many moons ago and they past it on..

Some claimed that a larger diameter was needed for strength on the lower torque strut? This would make absolutely no sense consider how the engine force and rotation under load is applied to that mount and the fasteners.. but hey what do I know ...right? lol




The bolts are common size anyway, not sure why there is a problem finding replacements at a well stocked hardware store??
willy13 likes this.
__________________
To view larger pictures simply "click " on the picture!

Dalai Lama
"Share you knowledge. It's the best way to achieve immortality."
ASE MASTER TECHNICIAN

Last edited by NitroPT; 27 Mar 2016 at 04:11 pm.
Reply With Quote
  #4 (permalink)  
Old 27 Mar 2016, 04:05 pm
_PTGT03's Avatar
Fanatic Cruiser
 
Join Date: Oct 2015
Location: Abbotsford, British Columbia.
Posts: 734
Default Re: mid- motor mount bolt

right on guys. mine started to strip its threads and wouldn't meet the specified torque tolerance. i'm about at 2/3 of its specific torque rating right now. i should have it replaced sometime soon.
__________________
2003 GT M/T in Onyx Green Pearl on Michelin Pilot Sport AS 3 Plus Tires 205/50ZR17. Dark Slate Gray Interior. OEM cargo net, parcel shelf, slush mats and trunk protector, mud flaps, mopar subwoofer. Platinum edition pedals, Neon SX 2.0 steering wheel with black+grey wrapped leather cover. Generic lowering springs, KYB gas shocks, Valeo solid flywheel conversion and clutch kit. Urethane insert engine mounts. Energy suspension full body urethane bushing kit. Chrysler premium front speakers, Jenson 6x9 rears. Boston Audio 4x55W amp. Panasonic head unit with xtenzi bluetooth. 300W AC power inverter. Escort 360max and Escort Shifter ZR4, dual front+rear dash camera. stage 1 blow off valve and syked tune computer . Boost and oil pressure gauges with Turbo-Timer. Needswings 3" exhaust elbow, Electric valve actuated Y-pipe with catalytic converter. To do: coilovers, 2step controller, quaife diff, Air-Fuel Meter
Reply With Quote
  #5 (permalink)  
Old 28 Mar 2016, 07:33 am
Handy_Cruiser's Avatar
Obsessed Cruiser
 
Join Date: Oct 2013
Location: Arkansas
Posts: 10,263
Default Re: mid- motor mount bolt

Modern Performance makes I kit that has harder motor mount bolts. You can also get that harder center bolt from a fastener shop. Look for a bolt with a metric hardness of 12.9. Take your old bolt with you to match up the length and threads.

Also, you can always replace the mount plate that goes on the engine if the one you have is stripped out. Salvage yards are full of them.

__________________

Last edited by Handy_Cruiser; 28 Mar 2016 at 07:41 am.
Reply With Quote
  #6 (permalink)  
Old 29 Mar 2016, 07:48 am
Fresh Cruiser
 
Join Date: Mar 2016
Posts: 2
Default Re: mid- motor mount bolt

Thanks to 2step and nitro for such rapid response. Problem I seem to be is finding the torx head. Am going to try Fast after leaving this post. Hardware stores have metrics but all are hex heads. Am going to try to drill with 135 split pt.+ use a #5 extractor so will loosen mount bolts to give me a little xtra wiggle room for error of alignment backing out broken piece.
Reply With Quote
  #7 (permalink)  
Old 29 Mar 2016, 09:57 am
2step's Avatar
Senior Cruiser
 
Join Date: Oct 2004
Location: New Braunfels, Texas.
Posts: 1,672
Default Re: mid- motor mount bolt

Quote:
Originally Posted by NitroPT View Post
I have read something to what you mentioned can't remember where?
As I recall it was GT Bruiser posting a couple years ago on the Crew forum.

Quote:
Originally Posted by willy13 View Post
Problem I seem to be is finding the torx head.
I actually didn't realize it was a Torx. I've never broken one of those. That makes it somewhat harder to find but not impossible nor having to wait for a back order. And of course, if you step up in size you probably have to buy a tap, too.
Reply With Quote
  #8 (permalink)  
Old 29 Mar 2016, 10:04 am
Fk5 Fk5 is offline
Senior Cruiser
 
Join Date: Jul 2011
Location: Colesville, MD
Posts: 1,816
Default Re: mid- motor mount bolt

I think I missing something. If you are changing the bolt, why does it have to be a Torx head? As long as the thread length and pitch is okay, what would the issue be with using a different bolt head?
Handy_Cruiser likes this.
__________________
2003 GT 5 speed
162,000 miles
Reply With Quote
  #9 (permalink)  
Old 29 Mar 2016, 10:05 am
Handy_Cruiser's Avatar
Obsessed Cruiser
 
Join Date: Oct 2013
Location: Arkansas
Posts: 10,263
Default Re: mid- motor mount bolt

Quote:
Originally Posted by Fk5 View Post
I think I missing something. If you are changing the bolt, why does it have to be a Torx head? As long as the thread length and pitch is okay, what would the issue be with using a different bolt head?
The head of the original torx bolt is countersunk into the motor mount. But by adding a shim that will fit in the recess on the motor mount, it may be feasible to use a hex bolt. You would just need to make sure the head of the hex bolt will not hit the chassis when the engine moves. But that really doesn't look like it would be a problem. At worst you might have to slightly increase the size of the assess hole with a hole saw.

__________________

Last edited by Handy_Cruiser; 29 Mar 2016 at 10:10 am.
Reply With Quote
  #10 (permalink)  
Old 29 Mar 2016, 10:45 am
NitroPT's Avatar
Obsessed Cruiser
 
Join Date: Jun 2012
Location: USA kalyfornia
Posts: 15,636
Default Re: mid- motor mount bolt




Hey how about just getting the correct fastener on this one...

Have you dealer do a "dealer search" for the part. I am sure a dealership somewhere has it and can express mail it to you.


I am starting to worry about some of the recommended things to do in this thread ....
__________________
To view larger pictures simply "click " on the picture!

Dalai Lama
"Share you knowledge. It's the best way to achieve immortality."
ASE MASTER TECHNICIAN
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Missing upper motor mount bolt Mbreen General PT Cruiser Discussions 12 17 Mar 2015 07:26 am
Broken motor mount bolt madeupofwires General PT Cruiser Discussions 1 24 Jun 2014 03:58 pm
Sheared Off Motor Mount Bolt - 2001 PT SteveG22 Tech & Performance Forum 7 19 Feb 2014 06:04 am
Lower motor mount bolt sheered off invidious Tech & Performance Forum 6 16 Sep 2013 05:08 pm
Removal of Snapped off Main Motor Mount Bolt - SUCCESSFUL! desarae77 Tech & Performance Forum 15 29 Jul 2013 07:56 am


All times are GMT -5. The time now is 02:58 am.




Powered by vBulletin® Version 3.8.2
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
LinkBacks Enabled by vBSEO 3.6.0 PL2 © 2011, Crawlability, Inc.
vB.Sponsors