PT Cruiser Forum  
Advertisements
       

Go Back   PT Cruiser Forum > General Forums > Tech & Performance Forum

PT Cruiser Forum

Advertisements
02 intake manifold bolts

 
Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 20 Feb 2012, 04:21 pm
JdubXXL's Avatar
Fresh Cruiser
 
Join Date: Feb 2012
Location: Edmonds, WA
Posts: 3
Default 02 intake manifold bolts

Greetings Cruisers,
I am a brand new member and a new PT owner. I purchased an 02 with 101k miles. It had a little shudder in the idle and occasional hesitation in acceleration, so I put in new plugs and wires, air filter, pcv. Now the idle roams a little but no danger of stall. Is this normal, like the computer is adjusting to the new components? I've only driven about 20 miles with the new parts.

One thing I had trouble with was the intake manifold bolts. I read here to torque to 20 lbs, but mine just keep turning with no discernable change in torque so I stop for fear of stripping them. No sign of vacuum leak using WD40.

Any advice is appreciated. The forum has been very helpful already, thanks!
Reply With Quote
  #2 (permalink)  
Old 20 Feb 2012, 04:29 pm
Dedicated Cruiser
 
Join Date: Mar 2011
Posts: 2,943
Default Re: 02 intake manifold bolts

Quote:
Originally Posted by JdubXXL View Post
Greetings Cruisers,
I am a brand new member and a new PT owner. I purchased an 02 with 101k miles. It had a little shudder in the idle and occasional hesitation in acceleration, so I put in new plugs and wires, air filter, pcv. Now the idle roams a little but no danger of stall. Is this normal, like the computer is adjusting to the new components? I've only driven about 20 miles with the new parts.

One thing I had trouble with was the intake manifold bolts. I read here to torque to 20 lbs, but mine just keep turning with no discernable change in torque so I stop for fear of stripping them. No sign of vacuum leak using WD40.

Any advice is appreciated. The forum has been very helpful already, thanks!
I never use a torque wrench...just tight them by heart....
Reply With Quote
  #3 (permalink)  
Old 20 Feb 2012, 04:40 pm
Banned
 
Join Date: Sep 2009
Location: south of Tampa, Florida
Posts: 3,037
Default Re: 02 intake manifold bolts

Don't know where you read that 20 lbs. is correct for the intake bolts. The correct torque is 105 INCH lbs., not FOOT lbs. and I think that loosely translates to around 9 FOOT lbs. It's also to small of a reading to trust a foot/lb. torque wrench to read correctly in my opinion. Do yourself a favor and get an inch/lb. torque wrench. You'll use it a bunch if you plan on doing very much yourself in the future. Most of the stuff in engine compartment require inch/lb. torque settings.

Most importantly, get yourself a Haynes PT cruiser repair manual and you'll be able to have it right on the PTs fender when you need it and avoid some possably costly errors in the future.

By the way, if your bolts on the intake are spinnings its PROBABLY because you have stripped the soft brass inserts that are in the female half of the nut/bolt insert of the intake halves. If too much torque is applied the inserts themselves break free and start spinning in the intake.

Jerry

Last edited by wwpptc; 17 Mar 2012 at 05:35 pm.
Reply With Quote
  #4 (permalink)  
Old 20 Feb 2012, 04:44 pm
Obsessed Cruiser
 
Join Date: Sep 2001
Posts: 27,749
Default Re: 02 intake manifold bolts

Sorry but I think you over did it. if it keeps turning, I think you stripped the threads in the plastic intake.

The torque is supposed to be 105 in-lbs. 105 in lbs = 8.75 ft lbs??? Not very much but way below your 20 lbs.

The upper and lower intakes are plastic and so are the threads that the 5 long bolts go into.


Damn, you type faster than I do Jerry.
__________________
Rules of the forum have been updated as of *07/07/2019* Please read them over.

- All decisions by the Moderator are semi-permanent, can and may be changed at his discretion but definitely will be the final word. Any action performed by the Administrator or Moderators are not to be discussed on the forum.
Reply With Quote
  #5 (permalink)  
Old 20 Feb 2012, 04:49 pm
Banned
 
Join Date: Sep 2009
Location: south of Tampa, Florida
Posts: 3,037
Default Re: 02 intake manifold bolts

Cary, at my age that's the only thing I can do fast. On second thought I take that back.

Jerry
Reply With Quote
  #6 (permalink)  
Old 20 Feb 2012, 05:32 pm
JdubXXL's Avatar
Fresh Cruiser
 
Join Date: Feb 2012
Location: Edmonds, WA
Posts: 3
Default Re: 02 intake manifold bolts

Hmmm... i'm almost certain I read on hear somewhere that years 01-02 the torque is 20 ft lbs and 03 up is 105 in lbs. I know ehow.com states 20 ft lbs, but it's a moot point now I suppose.

At any rate, all 5 of them still seem to have good grip at the moment so i'm going to let sleeping dogs lie for now.

The Haynes is definitely on my list, already got a good in lb/ft lb torque wrench.

thanks guys!
Reply With Quote
  #7 (permalink)  
Old 20 Feb 2012, 05:41 pm
Obsessed Cruiser
 
Join Date: Sep 2001
Posts: 27,749
Default Re: 02 intake manifold bolts

I found out where you got the 20 lbs from.

Turbocharged Models. 03+ Upper intake manifold bolts 20 Ft-lbs.

Manly because the turbo models have the cast aluminum (or whatever they have) manifold. That can take a lot more torque than the plastic ones.
__________________
Rules of the forum have been updated as of *07/07/2019* Please read them over.

- All decisions by the Moderator are semi-permanent, can and may be changed at his discretion but definitely will be the final word. Any action performed by the Administrator or Moderators are not to be discussed on the forum.
Reply With Quote
  #8 (permalink)  
Old 20 Feb 2012, 11:15 pm
mdfrodolives's Avatar
Senior Cruiser
 
Join Date: May 2010
Posts: 1,313
Default Re: 02 intake manifold bolts

I'm thinking that manifold is slowly going to work itself free and I can hear the hissing of vacuum in the near future. If you more that doubled the torque on those upper manifold bolts and inserts, then they have to be stripped, so what may seem tight is a sneaky problem that will only get worse as the normal vibration of the motor works the manifold up and the gaskets no longer seal.

Tim
Reply With Quote
  #9 (permalink)  
Old 21 Feb 2012, 06:55 pm
dunnboy's Avatar
Young Cruiser
 
Join Date: Feb 2012
Location: Newark, NY
Posts: 50
Default Re: 02 intake manifold bolts

The stripped problem could be am easy fix though right? Just re-tap the holes and use slightly bigger bolts? Correct me if I'm wrong please
Reply With Quote
  #10 (permalink)  
Old 21 Feb 2012, 07:17 pm
Obsessed Cruiser
 
Join Date: Sep 2001
Posts: 27,749
Default Re: 02 intake manifold bolts

I'm not an expert, but think that would work. There's seems to be plenty of room around the holes to go a bit bigger. Do all 5 bolts turn when seated?
__________________
Rules of the forum have been updated as of *07/07/2019* Please read them over.

- All decisions by the Moderator are semi-permanent, can and may be changed at his discretion but definitely will be the final word. Any action performed by the Administrator or Moderators are not to be discussed on the forum.
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
Air intake manifold spacejunkie84119 The Detail Shop 11 28 Aug 2011 07:48 pm
wtb 05-up upper intake manifold, throttle body, intake hose to turbo,aircleanor lid 1autodr Classifieds: Want To Buy 1 24 Feb 2011 05:15 pm
Intake manifold 2001PTCRUZ Classifieds: Want To Buy 3 10 Aug 2010 10:49 pm
GT Intake Manifold TaylorMade Tech & Performance Forum 13 01 Dec 2004 11:23 am
Help Intake Manifold Turbo Red General Turbo Discussions 5 25 Jan 2004 10:23 pm


All times are GMT -5. The time now is 02:00 pm.




Powered by vBulletin® Version 3.8.2
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
LinkBacks Enabled by vBSEO 3.6.0 PL2 © 2011, Crawlability, Inc.
vB.Sponsors