ring gap

[NJ_LLY]

Since no real interest has been shown in buying my parts by anyone I figure I may as well put it together. I'm leaning towards forged pistons as the truck will see minimal street use a I was wondering what kind of ring gap I should have or are total seal rings the way to go?

 

[TROJAN366]

Why stick with forged when fingers pistons have proven to hold massive power with none of the downsides of forged?

 

[NJ_LLY]

I'm not looking for a piston material debate just answers on ring gap. BTW John also has forged oval bowl.

 

[S Phinney]

What boost range? Total Seal has end gap specs with their ring sets. Big boost would run another .001 then. 0015 per inch of bore over their recommended gap. Forged vs cast run different gaps as well. Decide on material first then set end gap.

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[NJ_LLY]

Total boost will be around 80psi and the pistons will be forged.

 

[Fingers]

Totally depends on the manufacturer and the material used.

 

[messejme]

A simple answer........not here. You may want to call the ring manufacturer.

 

[NJ_LLY]

Thanks

 

[x MadMAX DIESEL]

Does anyone run a gapless top ring? I haven't seen measured what my gap was this season yet but I got a lot of blow by. And zero-20 compression turning engine over by hand


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[Fingers]

To my knowledge, there isn't a gapless top available for cast because of the keystone design.

 

[x MadMAX DIESEL]

To my knowledge, there isn't a gapless top available for cast because of the keystone design.

Mine is forged Piston 4.125 bore 1/16 1/16 and 3/16


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[Cknight199]

Does anyone run a gapless top ring? I haven't seen measured what my gap was this season yet but I got a lot of blow by. And zero-20 compression turning engine over by hand


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What Pistons are you running?


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[x MadMAX DIESEL]

What Pistons are you running?


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Custom wiseco, I think I got the problem figured out. I don't believed they used a torque plate when honing


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[S Phinney]

Does anyone run a gapless top ring? I haven't seen measured what my gap was this season yet but I got a lot of blow by. And zero-20 compression turning engine over by hand


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I run a gap less top ring and Napier second ring. Top ring gap is at .040. There was not any signs of blow by when I took it apart this past year. I was very happy with what I saw other than the broken crank.

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