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Ford 9N, 2N & 8N Discussion Forum
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8N Valve Job

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56Henry

03-27-2007 00:42:02




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Hello, I'm working on my first flathead Ford, have some experience with the later OHV engines. I think I need to do a valve job on this 48' 8N, has adjustable tappets & exhaust valve rotators. I have an I&T manual and the way I understand it, the valve, guide,& spring need to be removed as a unit?? Looks like several special tools will be needed. The one tool that I'm wondering about is the "jack type lifter" used to remove the valve/guide/spring assembly. Any recommendations where to find this tool? Anything on the internet? Thanks for any advice

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56Henry

03-27-2007 17:52:19




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 Re: 8N Valve Job in reply to 56Henry, 03-27-2007 00:42:02  
Thanks for the tips guys. I managed to get the suspected ex valve out after making a tool out of 3/4 of a washer welded to a lever and yes, it did give me fits. I"ll get the correct compressor for the rest, that Craftsman seems very reasonable.

Looks like new ex seats will be in order, I"ll leave this to the machine shop. Thanks again



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Jerrycpp

03-27-2007 08:25:46




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 Re: 8N Valve Job in reply to 56Henry, 03-27-2007 00:42:02  
Hobo and Dan are right on. If you happen to have the original tools you can indeed remove the guide, spring, valve, and keepers as a unit. Since most of those tools are long gone, get a regular OHV tool and go for it. Don't forget to plug the oil drain holes before you take the keepers out. They have a nasty habit of heading right for the oil pan.



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Hobo,NC

03-27-2007 05:10:55




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 Re: 8N Valve Job in reply to 56Henry, 03-27-2007 00:42:02  
treat the block just like it was a cylinder head and use a automotive spring compressor. if you git lucky you kin push the guides down with a bent screwdriver and remove as a asssy. The free rotators will give you a fit to git out with a automotive compressor. The free rotors will also take some time to install correctly
To the left under parts and Pieces in the search option type in hobo,nc I have 3 of 4 pages of pix and some wif the technique to remove the valves.

Also some info click Hobo"s

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Dan

03-27-2007 04:39:29




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 Re: 8N Valve Job in reply to 56Henry, 03-27-2007 00:42:02  
I got my Valve-in-Head valve compressor tool at Sears for less than $20 - link posted below. Yes, they still carry them. You "could" get by without the tool by using two large screwdrivers to straddle the end of the valve tip and pry up on the spring retainer to get the locking clips out - but it is not the easiest way to do it. I install the valves as a unit, but remove them by taking them apart because the guides (if you plan to replace) are usually pretty stuck in the bore and require "convincing" with a drift and a BFH.

Good luck and ask questions as you go along.

Dan

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