On Tue, 8 Jul 1997 08:44:22 -0500 (CDT) todd@nutria.nrlssc.navy.mil (Todd
Mullins) writes:
>Sounds really interesting. I'm VERY SLOWLY rebuilding a spare 18V for
>my '74. The cam that came out of it is rather badly chewed on a few
>lobes; how much wear is too much wear for a regrind?
Usually, the cam can have a couple of lobes welded without causing either
problems or additional charges. Also, FYI, later cars with catalytic
converters usually have much more seriously worn lobes (due to the great
heat from the cat right next to the cam gallery), and yet these worn cams
have been repaired successfully.
>Do you have hp and torque data at various rpm for this cam (on an
>otherwise stock motor, I'd assume)?
Sorry, Todd, no hard data. I came across this grind about 18 years ago
and have used in As, and both early and late Bs. It won't turn your car
into a race-car but there is noticeably more "grunt" between 2,500 and
4,000 r.p.m. without (as I noted earlier) any sacrifices that we've
encountered. On an 18V, you don't have to make any modifications
whatsoever to use it as the top of the block already has reliefs ground
into it for the exhaust valves. (Earlier engines may need these reliefs
added as the cam lifts the valves higher and old heads have almost always
been surfaced a few times, bringing the valves closer to the block.)
Lawrie
British Sportscar Center
|