How to replace valve guides on a 1994 4.0 OHV???? - Ranger-Forums - The Ultimate Ford Ranger Resource


4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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Old 09-25-2016
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How to replace valve guides on a 1994 4.0 OHV????

Are they removable? I have new ones but can't seem to budge the old ones.
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Old 09-25-2016
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Usually that's a job for a machine shop.
The heads that I've ever dealt with requires a press to get them out and in.
Then after that, they're reamed to spec.

Last edited by Jeff R 1; 09-25-2016 at 06:29 PM.
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I also found this too, but it still may require that it be reamed.


(you may want to mute the button on the video)
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Old 09-25-2016
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Quote:
Originally Posted by Jeff R 1 View Post
I also found this too, but it still may require that it be reamed.

Universal Valve Guide puller Remover & Installer set – mechanical type - YouTube

(you may want to mute the button on the video)
I tapped the guide to 3/8-16 and tried a large slide hammer but it wouldn't budge. I am a machinist and have access to a press so maybe I'll machine up a mandrel to press them put
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You can use a fine threaded bolt too, grade 8.
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