:
: I've been looking for a solution to some of our
: rod problems and I've got an idea. Feel free
: to shoot it down if you feel it is
: unworkable...
:
: Our slants use a 2.187 journal, bb-chevy uses a
: 2.2, so a 0.020 under bb-chevy bearing would
: be 2.180, a grind of 0.007 on the slant
: crank. So far, so good. Most bb-chevy rods
: are very short compared to our slant, but
: the aftermarket has a lot of 2.2 journal
: rods in the range of 6.8-7.1. The piston pin
: in a bb-chevy is a 0.990, much bigger than
: we use, but workable assuming custom
: pistons. Looking good so far, but we have a
: few big problems looming, namely big end
: width, big end 'depth' and possible block
: notches required.
:
: The slant rod big end is somewhere around 1
: 3/16 wide. I can measure more exactly but we
: know it is bigger than the available 2.2
: journal aftermarket rods.
:
: Here's my idea...weld the undercut on the crank
: rod journals and regrind the crank to a
: 1.000 (or thereabouts) width and a 2.180 or
: 2.170 dia. This would allow a nice fillet on
: the rod journal, a fairly cheap bb-chevy
: aftermarket steel rod in a 6.8-7.1 length.
: Maybe the rods could be purchased
: semi-finished with enough big-end width to
: make it fit?
:
: Anyone had a crank welded and reground
: (stroker) that could comment on the cost?
: I'd guess reducing the width would be
: "less scary" than building up the
: journal for a stroker.
:
: This still leaves us with the problems of
: getting the rod through the bore (mine will
: be 3.5), and potential block notches
: required.
:
: I might go visit a local machine shop and see
: if I can talk them out of a scrap bb-chevy
: stock length rod to play with.
:
: Anybody tried something like this?
:
: Comments welcome.
:
: thanks
: mark