4020 fire rings July 16, 2017 01:39PM
Have a 4020 that is fire ringed bought rings and head gasket from riverside and had sleeves machined to their specs have 7 hooks on them and I broke the side of the sleeve out where the groove is in all even numbered cylinders Anybody have any ideas as to y it did this and how to fix it thanks

Re: 4020 fire rings July 16, 2017 10:51PM
Sounds like you are running a 466 block with the recesses between the sleeves. Call Riverside back and ask Phil why he didn't recommend the sleeve keys that sit between the sleeves to eliminate this issue. Seen it before.

Re: 4020 fire rings July 17, 2017 01:53PM
Yep riverside forgot to send then liner keys for us also. Funny thing is they put the Long block together for us.
We put the fire rings in the sleeves filled the gap in the sleeve with JB Weld installed head before JB Weld set up. Sounds stupid but it has held for 2 years we build 1340 hp.

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