Posted by T.O.O. on April 25, 1998 at 20:28:04:
In Reply to: T.O.O: Nufromz blockguard or not.... posted by body on April 25, 1998 at 14:08:57:

The concept is really a good one. My personal experience with them is that the top of the cylinder bore runs extremely hot due to the lack of coolant. We have taken the unit and used a 3/8" end mill and scalloped the circular sections which surround the cylinder bores. We leave only 1/8th" sections every 3/8th". So you still support the cylinder, but only in 1/8th" wide areas, which allows much better cylinder cooling, and if you do this mod, and you really need the support, do it....it'll work. Make sure that after "fitting" the unit, bore and hone after installation. Also deck the block after installation and clean the block thoroughly before assembly. Do not, under any circumstances remove the blockguard after all this machining and prep, or you'll need to start over........................T.O.O. ..........................