The Ford Barn

GB SISSON · 10-29-2016, 11:09 AM

I am about to install 16 nors 8ba exhaust valves and guides into my 3 1/16 bore 59 block. I am not using rotators. Have hollow adjustable lifters, stock 59 cam. Do I follow the lash settings as though it was an 8ba or a 59 ab? Did this a few years ago with rotators and never knew why some specs were as big as .018 in late engines. Thanks in advance.

JSeery · 10-29-2016, 01:01 PM

A valve is a valve, the clearance difference would relate to the rotators, or the later cam which you are not using. Use the normal 59ab clearance with the stock cam. Note, valve clearance is mostly determined by the cam used.

GB SISSON · 10-29-2016, 01:20 PM

Thank you very much. I'm home alone all day and I'm in heaven with this latest budget build. My first valve seat grinding, so I lapped them in and saw that they really didn't need it, but they all got a little.

Ol' Ron · 10-29-2016, 03:44 PM

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Make sure you have the right springs. the rotators use a shorter spring. Usr the early springs.

10-29-2016, 11:09 AM	#1
GB SISSON Senior Member Join Date: Jan 2014 Location: Orcas Island Washington Posts: 4,946	8ba valves into 59ab question I am about to install 16 nors 8ba exhaust valves and guides into my 3 1/16 bore 59 block. I am not using rotators. Have hollow adjustable lifters, stock 59 cam. Do I follow the lash settings as though it was an 8ba or a 59 ab? Did this a few years ago with rotators and never knew why some specs were as big as .018 in late engines. Thanks in advance. __________________ Owner/Operator of 'Jailbar Ranch' on the side of Mt. Pickett. Current stable consists of 1946 1/2 ton pickup turned woodie wagon with FH V8, 1947 Tonner Pickup (red) mostly stock with exception of a cummins 6at turbo diesel, 1946 Tonner Pickup (green) with 226 cu in 6 cyl flathead, 1979 Toyota landcruiser wagon, completely encased in 1947 Ford Jailbar sheet metal. Ok, cornbinder rear fenders..... 'Rusty ol' floorboards, hot on their feet' (Alan Jackson)

10-29-2016, 01:01 PM	#2
JSeery Member Emeritus Join Date: Nov 2012 Location: Wichita KS Posts: 16,132	Re: 8ba valves into 59ab question A valve is a valve, the clearance difference would relate to the rotators, or the later cam which you are not using. Use the normal 59ab clearance with the stock cam. Note, valve clearance is mostly determined by the cam used.

10-29-2016, 01:20 PM	#3
GB SISSON Senior Member Join Date: Jan 2014 Location: Orcas Island Washington Posts: 4,946	Re: 8ba valves into 59ab question Thank you very much. I'm home alone all day and I'm in heaven with this latest budget build. My first valve seat grinding, so I lapped them in and saw that they really didn't need it, but they all got a little. __________________ Owner/Operator of 'Jailbar Ranch' on the side of Mt. Pickett. Current stable consists of 1946 1/2 ton pickup turned woodie wagon with FH V8, 1947 Tonner Pickup (red) mostly stock with exception of a cummins 6at turbo diesel, 1946 Tonner Pickup (green) with 226 cu in 6 cyl flathead, 1979 Toyota landcruiser wagon, completely encased in 1947 Ford Jailbar sheet metal. Ok, cornbinder rear fenders..... 'Rusty ol' floorboards, hot on their feet' (Alan Jackson)

10-29-2016, 03:44 PM	#4
Ol' Ron Senior Member Join Date: May 2010 Location: Chester Vt Posts: 8,861	Re: 8ba valves into 59ab question Sponsored Links (Register now to hide all advertisements) Make sure you have the right springs. the rotators use a shorter spring. Usr the early springs.