Jump to content
  • Sign Up

Recommended Posts

Just found a broken exhaust valve spring on hole #4.. happened to see it when I started the third pass torqueing down new head bolts after a dod delete.

I would like to do anything I can to avoid removing the head again.. what would be the second best method to replace this bad boy?

 

 

T4Q6U3C.jpeg

Link to comment
Share on other sites

A length of cotton rope inserted via the sparkplug hole and the piston run up against it will hold the valve closed. A long stud in the rocker mount and a nut with a fork acting on the retainer will free the keeper. There may be a KD tool already fabricated for that. Or perhaps @newdude will chime in. I'm certain they don't pull heads for a broken spring at the dealer. 

Link to comment
Share on other sites

Compressed air in cylinder sparkplug hole using air nozzle with rubber tip easy with 2 people 1 person keeps cylinder pressured while other changes spring. Pressure in the cylinder keeps valve up and not dropping. Just make sure both exhaust and intake valves are closed before doing it.

Edited by Silverado4x4
  • Like 1
Link to comment
Share on other sites

13 hours ago, Grumpy Bear said:

A length of cotton rope inserted via the sparkplug hole and the piston run up against it will hold the valve closed. A long stud in the rocker mount and a nut with a fork acting on the retainer will free the keeper. There may be a KD tool already fabricated for that. Or perhaps @newdude will chime in. I'm certain they don't pull heads for a broken spring at the dealer. 

 

 

Compressed air through the spark plug hole.  GM has a special tool valve spring compressor for gen 5 heads for replacing valve springs on car, but the aftermarket makes one as well.

 

Amazon.com: Michigan Motorsports Valve Spring Compressor Tool for L83 L86 LT4 Gen V Gen 5 Chevy LT1 Engine 5.3 6.2 : Automotive 

Edited by newdude
  • Thanks 1
Link to comment
Share on other sites

. No one likes "Ole School" rope eh? :crackup:I've lifted stuck cylinders and or heads off Brit bikes with that trick and they don't go flying when they unseat. 😉 Here, this will be useful. I made mine from an old sparkplug. And a TDC tool. 

 

https://www.moroso.com/universal-spark-plug-hole-air-hose-kit62385/

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.



×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.