Re: Sleveing a block
Generally when done properly there is nothing wrong with a fully sleeved block even if it started out as a parent bore block. There needs to be the proper press setup, a good surface finish and straight/round bore to put the sleeve into...that being said, on the other hand it is common to in the process of boring to break through the parent bore at thin spots which in an street application is no problem - or even on a race motor which starts out with a thick race casting it's nothing to really worry about. My concern here would be that these blocks already have proven themselves to be weak and prone to breaking, now you cut a step at the bottom of the bores and shove a sleeve in...seems very possible that through the introduction of stress risers at these points you have effectively weakened the block. Even if cylinder wall flex was causing ring seal problems at high boost I would recommend block fill rather than a sleeve.
sleeves are for repairing a damaged cylinder or bringing a rare block back to a machinable size.
Thank you..... Very well said.
[CENTER]01 F-250 SC PSD,430k,16 Isspro Gauges, AFE-2,CCV Mod,IAH delete,map reg,Modded H2e, 6.0 IC, 230/100, Studs, 910 springs, Forged rods, Hydra chip, Swamps HVHF IDM, MBRP 4" dual's, Aero, 6" tip's, 4" Revtek lift, 37/12.5/16.5 MT's