Posted by Carter Shore
on 11/9/2009, 11:15 am, in reply to "Re: Engine Angle"
32.179.142.110
FWIW, I've seen claims on engineering forums that needle bearing U-joints fail quicker when there is zero angle (ie, the crosses don't rotate in the cups slightly with each rotation of the shaft).
No motion means that all of the forces are confined to the same line contact between needle roller and cross/cup, also means no movement of lubricating grease. Of course, extreme angles are bad, but I'd look into splitting the angular difference at diff and trans, a degree or two should do the trick. Maybe even cant it sideways a tad if you have to.
Lord knows, Spit U-Joints can use all the help possible to prolong their service life.
Carter Shore
--Previous Message--
: The important measurement will be at the
: back of the trans. Using the diff
: input flange as a reference, elevate
: the tailshaft so that the trans output
: flange is parallel . Not necessarily
: inline, there will be offset, but
: parallel. Any engine angle
: measurements we take will only get you
: in the ballpark.
:
:
: HTH, Steve
:
: Oh, and to add to that, a driveshaft
: shop told me the parallelism isn't
: actually the big deal it's made out to
: be. He said don't worry about it???
:
: --Previous Message--
: The GT6 I'm putting back on the road
: has
: had no gearbox hanging off the back of
: the engine since before OJ got
: acquitted. I'm close to the end of the
: T50 conversion, but need to calculate
: the correct height for the rear gearbox
: mount so the engine/gearbox angle is
: correct. Every photo I've found shows
: a front to rear downward slant, but I
: can't find a definitive reference.
: Anyone able to point me to a reference,
: or put an inclinometer on their oil
: cap?
:
: Thanks in advance,
:
: Craig
:
:
:
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