The Ford Barn

Bluebell · 10-24-2015, 03:30 AM

When installing rotators (exhaust valves only) What lash (valve clearance) should I be using? The cam is a std.ford cam.

flatheadmurre · 10-24-2015, 03:46 AM

What engine...49-53 or sticking them into an earlier one?
Here are some tune-up specs.
http://www.vanpeltsales.com/FH_web/f...53_239-255.htm

GB SISSON · 10-24-2015, 07:35 AM

I think maybe he's wondering what I was wondering last spring when I installed the later one piece guides and valves in a 59ab. Does one adjust valve lash as though it was a late model engine or use the specs required for the 59ab, which are smaller? The .019 seemed like an awful large gap to me so I went about 1/2 way between. Seems quiet enough, but not as quiet as I'm used to.

flatheadmurre · 10-24-2015, 08:22 AM

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It depends on stemlenght and heat so a bit about how hard and hot you run the engine to...not only which engine.
Since most dont run their vehicles hauling rock its not a problem to keep it a bit tight.

10-24-2015, 03:30 AM	#1
Bluebell Senior Member Join Date: Nov 2012 Location: Tauranga, New Zealand Posts: 726	lash with rotators. When installing rotators (exhaust valves only) What lash (valve clearance) should I be using? The cam is a std.ford cam.

10-24-2015, 03:46 AM	#2
flatheadmurre Senior Member Join Date: Apr 2015 Location: Sweden Posts: 3,045	Re: lash with rotators. What engine...49-53 or sticking them into an earlier one? Here are some tune-up specs. http://www.vanpeltsales.com/FH_web/f...53_239-255.htm

10-24-2015, 07:35 AM	#3
GB SISSON Senior Member Join Date: Jan 2014 Location: Orcas Island Washington Posts: 5,881	Re: lash with rotators. I think maybe he's wondering what I was wondering last spring when I installed the later one piece guides and valves in a 59ab. Does one adjust valve lash as though it was a late model engine or use the specs required for the 59ab, which are smaller? The .019 seemed like an awful large gap to me so I went about 1/2 way between. Seems quiet enough, but not as quiet as I'm used to. __________________ 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, 1946 Tonner Pickup with 226 H six, 1979 Toyota landcruiser wagon, now wearing 1947 Ford Jailbar sheet metal. 'Rusty ol' floorboards, hot on their feet' (Alan Jackson)

10-24-2015, 08:22 AM	#4
flatheadmurre Senior Member Join Date: Apr 2015 Location: Sweden Posts: 3,045	Re: lash with rotators. Sponsored Links (Register now to hide all advertisements) It depends on stemlenght and heat so a bit about how hard and hot you run the engine to...not only which engine. Since most dont run their vehicles hauling rock its not a problem to keep it a bit tight.