Jump to content


Welcome to Ultimate Subaru Message Board, my lurker friend!

Welcome to Ultimate Subaru Message Board, an unparalleled Subaru community full of the greatest Subaru gurus and modders on the planet! We offer technical information and discussion about all things Subaru, the best and most popular all wheel drive vehicles ever created.

We offer all this information for free to everyone, even lurkers like you! All we ask in return is that you sign up and give back some of what you get out - without our awesome registered users none of this would be possible! Plus, you get way more great stuff as a member! Lurk to lose, participate to WIN*!
  • Say hello and join the conversation
  • Subscribe to topics and forums to get automatic updates
  • Get your own profile and make new friends
  • Classifieds with all sorts of Subaru goodies
  • Photo hosting in our gallery
  • Meet other cool people with cool cars
Seriously, what are you waiting for? Make your life more fulfilling and join today! You and your Subaru won't regret it, we guarantee** it.

* The joy of participation and being generally awesome constitutes winning
** Not an actual guarantee, but seriously, you probably won't regret it!

Serving the Subaru Community since May 18th, 1998!

Guest Message by DevFuse
 

Photo
- - - - -

Best way to remove intake manifold bolts so that...???


  • Please log in to reply
9 replies to this topic

#1 Petersubaru

Petersubaru

    1000+ Super USER!

  • Members
  • 1,081 posts
  • Sarnia Canada

Posted 10 January 2007 - 03:34 PM

recently I was shown a receipt by a subaru owner who had to have an intake gasket replaced and the cost alone for 1 bolt removal was over $500.. this was because the "head" of the bolt broke off which resulted in many hours of extra labor...is there some preparation one can do before hand when taking out these 20plus yr old bolts?? ..I have removed a few of them myself over the yrs and they can be very stubborn

#2 grossgary

grossgary

    Elite Master of the Subaru

  • Members
  • 19,339 posts
  • WV

Posted 10 January 2007 - 03:49 PM

don't force them. if they get hard to turn while loosening them, tigthen them down a bit. work it back and forth, back and forth. this will free up the corrossion down in there. if you're lucky enough to get it to come up even a millimeter off the manifold, spray PB Blaster or Liquid Wrench (not WD40) down the shaft of the bolt. the point is to get some down inside the bolt hole, not on the bolt. this works most of the time. and yes it's a serious pain to work with them once they shear off.

i would also suggest not trying to remove them when the car is hot...although maybe that's a good time to try for some reason i'm not aware of.

#3 Prospeeder

Prospeeder

    Subaru Fanatic!

  • Members
  • 487 posts

Posted 11 January 2007 - 12:24 AM

I had the head of a bolt twist off, so i took all the rest off, and pried the manifold over the bolt, wich was easy, and then used some vice grips that were SOOOO tight, i mean i used chanell locks to lock the vices down, and it turned out with PB blaster, so really its not the end of the world.

#4 moosens

moosens

    Psychotic Subathusiast

  • Members
  • 1,156 posts
  • Bridgeport CT

Posted 11 January 2007 - 01:43 AM

Some folks say warm isn't too bad but not when its hot.That give a better chance for threads to stick to the bolt and strip out.

Back and forth many times untill you get that space enough to spray PB down there.Still,go back in if you have to often.Break the corrosion and and chipping.

Lots of us already have the Heli-coil or Time-sert kit for those.:)

#5 torxxx

torxxx

    I void warranties

  • Members
  • 2,914 posts
  • Fairbanks

Posted 11 January 2007 - 03:10 AM

if you get a stubborn one, heat up the head with a torch next to where the bolt is.. once its hot, spray from PB blaster around the bolt. (DONT BREATHE THE FUMES THE PB BLASTER WILL VAPORIZE) the heat helps suck the PB blaster into the threads.

make sure you antiseize the hell out of the bolts when you put the intake back on

#6 Subaru_dude

Subaru_dude

    1000+ Super USER!

  • Members
  • 1,469 posts
  • Morristown, TN

Posted 11 January 2007 - 09:15 AM

yeah, they suck. i had to heli-coil 4 out of the 6 holes when i resealed my motor. i've gotten quite good at heli-coiling. my last car was from Vermont. yep you guessed it, EVERYTHING broke. lol check around at several shops and see what they use for rust penetrant. i found this stuff called "nutcracker" at a local stealership... this stuff's 10 times better than pb-blaster. just stop by a stealership and ask a mech if they use something better than pb-blaster to break down rust... if they got it they'll tell you.

#7 Petersubaru

Petersubaru

    1000+ Super USER!

  • Members
  • 1,081 posts
  • Sarnia Canada

Posted 11 January 2007 - 01:06 PM

you were lucky..my example ended up braking the bolt down into the engine case...a good idea just entered my head.. if you feel one bolt to be very stubborn ...then grind the head down and remove it by your method.....

I had the head of a bolt twist off, so i took all the rest off, and pried the manifold over the bolt, wich was easy, and then used some vice grips that were SOOOO tight, i mean i used chanell locks to lock the vices down, and it turned out with PB blaster, so really its not the end of the world.



#8 NorthWet

NorthWet

    Eeyore Incarnate

  • Members
  • 5,039 posts
  • Bremerton, WA

Posted 11 January 2007 - 04:43 PM

Nobody mentioned "persuading" the bolt with some hammer taps...

Otherwise, what the others have said. Heat-cycling the bolt area and penetrant oil, work the bolt slowly out then back in. Patience.

I'm thinking of replacing with studs and o-rings on mine.

#9 Born_a_Brat

Born_a_Brat

    USMB Regular

  • Members
  • PipPipPip
  • 49 posts
  • Placerville

Posted 11 January 2007 - 05:02 PM

I GOOGLEd "nutcracker" ....no success. Is there another name? do you know the manufacturer?

thanks

#10 Petersubaru

Petersubaru

    1000+ Super USER!

  • Members
  • 1,081 posts
  • Sarnia Canada

Posted 11 January 2007 - 05:47 PM

I can't think of any other bolts on this model of car
which has the potential to create a lot of problems...

yeah, they suck. i had to heli-coil 4 out of the 6 holes when i resealed my motor. i've gotten quite good at heli-coiling. my last car was from Vermont. yep you guessed it, EVERYTHING broke. lol check around at several shops and see what they use for rust penetrant. i found this stuff called "nutcracker" at a local stealership... this stuff's 10 times better than pb-blaster. just stop by a stealership and ask a mech if they use something better than pb-blaster to break down rust... if they got it they'll tell you.






0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users