The Ford Barn

LizardsA · 04-15-2017, 03:38 AM

This engine block has just come back from the engineering works - are these valves inserted correctly, or do they need to be flush with the top of the block?

Mike V. Florida · 04-15-2017, 03:46 AM

Looks good.

LizardsA · 04-15-2017, 04:13 AM

Mike V - do you think I can go ahead and start the build?

Mike V. Florida · 04-15-2017, 04:17 AM

Yes, I do. If you do a search for engine rebuilders, you will find photos of engine blocks that have valves that look just like the ones you have installed.

LizardsA · 04-15-2017, 04:18 AM

Thanks Mike, much appreciated!

Tom Wesenberg · 04-15-2017, 06:53 AM

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When they are flush with the deck then someone has ground them way too much. Your's will give better flow than any that are flush (recessed).

bnchief · 04-15-2017, 07:06 AM

Tom and Mike are exacly right

kenparker · 04-15-2017, 07:09 AM

Mike and Tom are both right on. The valves sitting above the block gives a better air flow both in and out the cylinder. The block/valves were designed that way by Ford. The better air flow gives a better burn with each "fire". And thus better performance or in other words more HP.

As the engine over the 80 to 90 years wears, owners and engine builders grind the valves and seats to refresh the engine. Each grind whether valve heads or valve seats makes the head sit lower in the block, until it finally sits below the block surface.

I will try to post a picture of both senerios this afternoon. One with valves above and one with valves below the surface. ken

Patrick L. · 04-15-2017, 07:12 AM

You could remove a few if you like and check the face/seat contact area, just to make sure.

04-15-2017, 03:46 AM	#2
Mike V. Florida Senior Member Join Date: May 2010 Location: South Florida Posts: 14,054	Re: Valve installation Looks good. __________________ What's right about America is that although we have a mess of problems, we have great capacity - intellect and resources - to do some thing about them. - Henry Ford II

04-15-2017, 04:13 AM	#3
LizardsA Senior Member Join Date: Oct 2012 Location: Randburg, Johannesburg, South Africa Posts: 225	Re: Valve installation Mike V - do you think I can go ahead and start the build?

04-15-2017, 04:17 AM	#4
Mike V. Florida Senior Member Join Date: May 2010 Location: South Florida Posts: 14,054	Re: Valve installation Yes, I do. If you do a search for engine rebuilders, you will find photos of engine blocks that have valves that look just like the ones you have installed. __________________ What's right about America is that although we have a mess of problems, we have great capacity - intellect and resources - to do some thing about them. - Henry Ford II

04-15-2017, 04:18 AM	#5
LizardsA Senior Member Join Date: Oct 2012 Location: Randburg, Johannesburg, South Africa Posts: 225	Re: Valve installation Thanks Mike, much appreciated!

04-15-2017, 06:53 AM	#6
Tom Wesenberg Senior Member Join Date: May 2010 Location: Mpls, MN Posts: 27,582	Re: Valve installation Sponsored Links (Register now to hide all advertisements) When they are flush with the deck then someone has ground them way too much. Your's will give better flow than any that are flush (recessed).

04-15-2017, 07:06 AM	#7
bnchief Senior Member Join Date: Jun 2016 Posts: 252	Re: Valve installation Tom and Mike are exacly right

04-15-2017, 07:09 AM	#8
kenparker Senior Member Join Date: May 2010 Location: Van, Texas Posts: 1,122	Re: Valve installation Mike and Tom are both right on. The valves sitting above the block gives a better air flow both in and out the cylinder. The block/valves were designed that way by Ford. The better air flow gives a better burn with each "fire". And thus better performance or in other words more HP. As the engine over the 80 to 90 years wears, owners and engine builders grind the valves and seats to refresh the engine. Each grind whether valve heads or valve seats makes the head sit lower in the block, until it finally sits below the block surface. I will try to post a picture of both senerios this afternoon. One with valves above and one with valves below the surface. ken

04-15-2017, 07:12 AM	#9
Patrick L. Senior Member Join Date: May 2010 Location: Largo Florida Posts: 7,225	Re: Valve installation You could remove a few if you like and check the face/seat contact area, just to make sure.