11-04-2025, 10:53 PM
I've replaced mine recently. The guide is 1/2" outside, 9/32" inside (or 12.7 x 7.1 mm if you prefer). The machined part of the drift is 6.8mm diameter by 10mm long roughly.
I actually pulled the guides out with a piece of studding and a couple of nuts so I didn't need to have a drift that was smaller than the outside of the guide. I also made up a spacer to sit on top of the cam follower guides, so I avoided knocking the new valve guides in too far.
I actually pulled the guides out with a piece of studding and a couple of nuts so I didn't need to have a drift that was smaller than the outside of the guide. I also made up a spacer to sit on top of the cam follower guides, so I avoided knocking the new valve guides in too far.