The Ford Barn

Mark's 37 · 10-24-2015, 06:50 PM

Got the 12"x3/16" drill bits (3 just in case) and have been going through the Tardel book looking at his modifications of the lifter bores. That is taking 1/4" off the inboard side of each upper lifter bore to allow better access for an end wrench. I know his book is recent but since the newer adjustable lifters have a taller bolt head for better access, is this still a good idea?

51 MERC-CT · 10-24-2015, 07:18 PM

If you are using the longer replacement valves it helps to remove material.
The longer valves make it necessary to crank the bolt in to get adjustment.
Found that I could get away with only removing about 1/8 inch of material.
Also choice of cam figures into how much material needs to be removed.

Mark's 37 · 10-24-2015, 10:18 PM

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Thanks, looks like the Dremel will get fired up soon.

10-24-2015, 06:50 PM	#1
Mark's 37 Senior Member Join Date: Jul 2015 Location: Aptos, Ca Posts: 355	Lifter bore modification for adjustables Got the 12"x3/16" drill bits (3 just in case) and have been going through the Tardel book looking at his modifications of the lifter bores. That is taking 1/4" off the inboard side of each upper lifter bore to allow better access for an end wrench. I know his book is recent but since the newer adjustable lifters have a taller bolt head for better access, is this still a good idea?

10-24-2015, 07:18 PM	#2
51 MERC-CT Senior Member Join Date: May 2010 Location: East Hartford, Ct Posts: 5,898	Re: Lifter bore modification for adjustables If you are using the longer replacement valves it helps to remove material. The longer valves make it necessary to crank the bolt in to get adjustment. Found that I could get away with only removing about 1/8 inch of material. Also choice of cam figures into how much material needs to be removed. __________________ DON'T RECALL DOING SOMETHING FOR MYSELF BASED ON SOMEONE ELSE'S LIKES OR DISLIKES Last edited by 51 MERC-CT; 10-25-2015 at 01:07 AM.

10-24-2015, 10:18 PM	#3
Mark's 37 Senior Member Join Date: Jul 2015 Location: Aptos, Ca Posts: 355	Re: Lifter bore modification for adjustables Sponsored Links (Register now to hide all advertisements) Thanks, looks like the Dremel will get fired up soon.