Thread: V8 Valve Guide Replacement

Take it to an engine shop, a quick hone may be all it needs, or a bronze liner. Replacing a guide requires heat, a press, honing the guide to size and recutting the valve seat for the correct alignment.

Thanks, I suspected as much after reading: Rover Valve Guide Options (British V8 Newsletter V12/I1, January 2004 where he points out that the factory put the guides in unfinished and then finished them at the same time as the seat. I like the quaint way the workshop manual tells you to just bash them out and bash them in and then recut the seat.

There's a great bit of DIY here: Chris Cowdery Global Presence

I'm extremely hesitant to send it away as Perth is full of morons. Not only is getting a job done properly hard enough, but getting whatever part packed up so it isn't damaged on the way home is apparently impossible too!

I may as well sell these and get some from Turners. Anyone near an engine shop would have an easy time fixing this.

Here's the picture I didn't have the chance to take yesterday:

Personally I would just clean the inside of the guide myself. Cut a slot in a piece of 5-6mm rod, insert a small scrap of fine wet-n-dry paper folded double (grit exposed both sides), and spin gently in the guide. This is a variation of a home made brake cylinder hone I was shown as a lad.