Parts Catalog Accessories Catalog Tech Info Tech Forums
  Search our site:    
 Cart  | Project List | Order Status | Help    

Go Back   PeachParts Mercedes ShopForum > Technical Information and Support > Tech Help

LinkBack Thread Tools Display Modes
Old 06-11-2002, 03:26 PM
Posts: n/a
How to get head bolts off

What's the best way to get head bolts off factory engine
450 sl v8 that has never been off. They are stuck from heat etc never been off.
Reply With Quote
Old 06-11-2002, 03:59 PM
Posts: n/a
I'm not sure about the V8's but all the MB engines I've worked on have stretch bolts. They are really tough to get loose and maybe tougher to retorque, using the proper angle torque method. You will need to get a manual for your engine before going back together.

You will need the correct tool that fits the bolts properly. This is available as a MB tool, but a friend of mine found a set at an auto store that had about three different sizes and one of them fit perfectly. Much less expensive than the MB tool.

Use the correct socket, a long breakover bar and plenty of oomph. They'll come loose.

Good luck,
Reply With Quote
Old 06-11-2002, 04:11 PM
Registered User
Join Date: Aug 2001
Location: secret
Posts: 3,044
Larry's right. That part about the correct tool is critical. Headbolts ain't the place to improvise!! I got mine from Snap On.
Reply With Quote
Old 06-11-2002, 04:14 PM
Potomac German Auto
Join Date: Mar 2002
Location: Frederick, MD
Posts: 407

For some reason you shouldn't be able to get it off with some "oopmhhh" , you can resort to a torch and heat it. CAREFULLY !!
1997 C230
2002 ML320
2000 BMW 528I (WIFEY'S CAR)

"Excuses are crutches for the unfounded."
Reply With Quote
Old 06-11-2002, 08:41 PM
Posts: n/a
I was at shop the tech had to breal the heads of 3 bolts

and was going to heat a few of the ones on the inside it was tough to get bolts off/. He had spent 2 days trying.

Reply With Quote
Old 06-11-2002, 09:20 PM
Registered User
Join Date: May 2002
Posts: 105
ballpean hammer and penetrating oil...spray on, tap, spray on, tap, spray on, this 5-6 times then let it sit overnight.
Reply With Quote


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

All times are GMT -4. The time now is 02:45 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page