A to Z Posted October 4 Share Posted October 4 I know F54 has the siamesed bores, and the N42 does not. Both have a bore of 86mm. P30 is a 240/260 block, and has a bore of 83mm. Someone today told me he read somewhere that the N42 casting has better oiling than a P30 block. I also read that the N42 block has a higher nickel content than ANY other L6 block. SO.....If one were to bore out all 6 cylinders and sleeve it for BIG pistons, why wouldn't the P30 be just as good as say an N42 or even f54? Thanks in advance. Quote Link to comment Share on other sites More sharing options...
Brad-ManQ45 Posted October 4 Share Posted October 4 (edited) Can't put liners in and have them supported at the base... Edited October 7 by Brad-ManQ45 Spelling Quote Link to comment Share on other sites More sharing options...
A to Z Posted October 6 Author Share Posted October 6 in a d? As in Datsun? what? we bore until 3/8 from the end and stop. that leaves a 3/8" thick shelf for the liner to rest on. If I bevel the top of the bores, it would allow for welding the top of the liners in. You could also weld the liners at the bottom at the step. cleanup decking and a clean up bore to smooth up the liner to step area and you're golden. Cooling could be a concern. Quote Link to comment Share on other sites More sharing options...
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