I keep hearing b series guys say FRM sleeves are weak and cant hold power....but then i see guys making 350-400 on stock blocks.
has anyone actually blown a sleeve first? rather than a piston or rod...???

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by v4lu3s &raquo;</TD></TR><TR><TD CLASS="quote">I keep hearing b series guys say FRM sleeves are weak and cant hold power....but then i see guys making 350-400 on stock blocks.
has anyone actually blown a sleeve first? rather than a piston or rod...???</TD></TR></TABLE>

I don't think the issue is with the actual FRM sleeve strength but a compatibility issue mostly. Most guys here usually sleeve their blocks with iron ductile sleeves or similar material in order for the sleeves to be compatibile with aftermarket forged pistons. Most stock failures after running boost is usually from the stock bottom end giving out - i.e. blown ring piston lands, melted piston e.t.c. I'm sure the big turbo guys with built blocks could share more on this subject

 

i ahve heard of melted pistons, blown rings/ringlands, thrown rods, spun bearings...but i have yet to see or hear of a broken or cracked stock sleeve...and the power levels i ahve seen on stock internals is higher than i ahve seen on B series engines.