Ring gap discussion.

[Harry]

I'm going to go with stay at home talk about ring gaps and drink beer. Spray it!!!

[LXtasy]

what would greg do? wwgd

[DolSVT00]

Well, the discussion started out good..... Then in normal CHP trend, went to GGG...........

[1iron]

Who are you going to gap?

[BAD BOB]

[Lurch]

http://www.google.com/url?sa=t&sourc...eZLqiCb_AbDNOw

[DolSVT00]

Originally Posted by Lurch

http://www.google.com/url?sa=t&sourc...eZLqiCb_AbDNOw

Thats a direct copy of the PDF from the forum I got it from, here's the original article from spears racing.

http://www.spearsenterprises.com/pdf/pistonRingGap.pdf

[Lurch]

This is out of the Ford 5.4 Lightning Manual Top Ring 0.23-0.49, 2nd ring 0.23-0.49, Oil rings 0.006-0.026 Ford tech book on modular 5.4 Supercharged Just retyping out of a manual. ( Also Piston should be Measured with outside Micrometer and Cylinder should be measured Top middle and bottom with a inside micrometer to determine clearance's then Ring gap can be figured. My 2 cents

[DolSVT00]

Originally Posted by Lurch

This is out of the Ford 5.4 Lightning Manual Top Ring 0.23-0.49, 2nd ring 0.23-0.49, Oil rings 0.006-0.026 Ford tech book on modular 5.4 Supercharged Just retyping out of a manual. ( Also Piston should be Measured with outside Micrometer and Cylinder should be measured Top middle and bottom with a inside micrometer to determine clearance's then Ring gap can be figured. My 2 cents

Ya, I know what the stock ring gaps are. Last time I had mine set I went with what Manley tells you to do and added a coouple, and in my opinion is too tight.

For a .020 over engine running their pistons/rings they want you to be like 0.018 on the top and 0.011 on the bottom.

[red99pony]

i contacted manley about the tight ring gaps myself when i installed mine. they said the reason for the tighter ring gaps on their pistons was because their ring lands are lower down on the piston, further away from the heat. this is supposed to allow for tighter ring gaps. i remember opening mine up a bit though because i was uncomfortable with how tight they want you to make them.

[DolSVT00]

Originally Posted by red99pony

i contacted manley about the tight ring gaps myself when i installed mine. they said the reason for the tighter ring gaps on their pistons was because their ring lands are lower down on the piston, further away from the heat. this is supposed to allow for tighter ring gaps. i remember opening mine up a bit though because i was uncomfortable with how tight they want you to make them.

Exactly, the math they gave me told me to set the bottom ring to .0125