Ring gap


TEACHER

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Anyone know what the ring gap should be for my 4.0 ohv . Adding Paxton about 6 lbs max on ported heads.Or where would a person find that info.
 


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Craig0320

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Are you running pump gas or e85 or something to that nature. Pump gas will run hotter cylinder temps but I doubt your rings will hit with 6 pounds of boost.
If you were trying to run 15 psi or something then I would go .020 top and .016 bottom my buddy ran that on a supercharged 302. Just remember the bigger the gap the more blowby.
 
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TEACHER

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Thanks, ran them 20 thanks for the reply
 

Craig0320

Member
Supporting Member
Article Contributor
V8 Engine Swap
TRS 20th Anniversary
Joined
Sep 21, 2017
Messages
923
Reaction score
20
Points
18
Location
Mississppi
Vehicle Year
1998
Make / Model
Ford
Engine Type
V8
Engine Size
5.0
Transmission
Automatic
2WD / 4WD
4WD
My credo
Break it right the first time. Fix it better the next time.
No problem let us know how everything goes.
 


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