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87.5mm pistons on stock K24 sleeves

5703 Views 14 Replies 7 Participants Last post by  cranny
Hi guys so the K24 will need to be bored out to at least 87.25 from what I was told. I'm going to me making over 300+whp k24/k20 turbo setup under low boost for a some what of a daily car. I was told it would be pushing it if I was going to bore the stock k24a4 sleeves to 87.5mm with forced induction . Is it safe enough to do because I could not really locate a correct answer to my question after searching online. The other thing I'm thinking of doing is just picking up new TSX over sized 87.25mm pistons and new rods and calling it a day. CP can't make me the 87.25 pistons and not sure Wiseco can I'm waiting to hear back from them but I'm worried going 87.5mm with shelf piston is pushing unless I'm wrong.
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stock sleeves 87.5mm be fine daily driving, get a good tuner. don't boost until it is tuned. if you wanna be extra save you can tow the car to to the Dyno once the engine is ready to turn on. if anything the tranny & oem pistons & rods would be the weakest link.

buy forged pistons, H-beam rods, type-s oil pump, cometic head gasket & new valve seals.
maybe tune it low boost for daily & use high boost for racing only or take advantage of boost by gear using the hondata solenoid.
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