The only benefit is they are supposed to be lighter and stronger. When
you convert an early solid lifter engine to the bucket lifters you will
need pushrods to go with them. So, it's either buy used or Crane.
I'm going to experiment with lash settings a bit. Crane specs .018 int
and .020 exh hot for their factory replacement cam.
http://cranecams.com/master/apps/mg.htm#57-80
Too bad they don't make a hydraulic version.
Max Heim wrote:
>
> Hmmm, I would believe it if someone were to argue that the 3-piece
> pushrods were designed with hydraulic lifter applications in mind, and
> that the pounding they take from large-clearance mechanical applications
> like the B engine can potentially lead to failure. But I don't know of
> any authority for this opinion.
>
> I am using the 3-piece pushrods in my Mopar V8, but only because I went
> from solid lifters to hydraulic, and needed a custom length. The original
> Chrysler pushrods were one-piece, FWIW, even in this high performance
> application.
>
> What's the big benefit with these tubular pushrods on the B, anyway? Low
> reciprocating mass isn't exactly the thing's strong suit. Hardly seems
> necessary on a street engine, anyway.
>
> Barney Gaylord had this to say:
>
> >>Barney Gaylord wrote:
> >>>....
> >>> Yes. Absolutely got an idea. Look here first:
> >>> http://www.ntsource.com/~barneymg/grapes/bent_pr.jpg
> >>>
> >>> This WAS a brand new set of Crane Cams pushrods. .... notice the end
> >>>piece inserts that came loose from the Crane 3-piece tubular pushrods. ....
> >
> >I'm still open to ideas though, just in case anyone would like to venture a
> >guess as to cause and effect. And just for the record, since repairing the
> >engine and installing a stock set of one piece pushrods I have done an
> >additional 5000 miles of very serious driving, including EIGHT more
> >autocross dates, and still no more problems.
> >
> >Barney Gaylord
> >1958 MGA with an attitude
> > http://www.ntsource.com/~barneymg
> >
> >
>
> --
>
> Max Heim
> '66 MGB GHN3L76149
> If you're near Mountain View, CA,
> it's the red one with the silver bootlid.
--
Stuart MacMillan
Seattle
'84 Vanagon Westfalia
'65 MGB (Driven since 1969)
'74 MGB GT (Restoring)
Assisting on Restoration:
'72 MGB GT (Daughter's)
'64 MGB (Son's)
Parts cars:
'68 & '73 MGB, '67 MGB GT
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