Tony, Steve, et Listers,
It's always dangerous, but fun to speculate on just what those crazy Ford
engineers were thinking with regard to various changes they made. For
example, the different firing order in the 351W engine, etc. As I mention
to Steve earlier in a private communication, I'm probably treading on thin
ice here too, but note that the cam counterbalance used in the HiPo 289s
turns at half the crankshaft rpm. Thus, this counterweight would appear to
have no direct relationship to the external balancing of the engine by the
harmonic damper. I suspect it is an attempt to reduce higher harmonics that
exist inherently in the V-8 design (only straight sixes and V-12s are
perfectly balanced designs).
Just another two cents worth. Any comments?
Bob
At 12:57 PM 7/26/99 -0400, FrizBMG@aol.com wrote:
>Well,Steve I agree with almost everything in your masterful discourse.I am
>well aware of the fact that these Ford engines(260,289,etc) finished off the
>act of balancing the engine externally,at both ends.The 302 used both an
>early 3 hole version and an after 70 a 4 hole version of the 28 oz
>imbalance piece.The question was about Harmonic balancers.I assumed that Tym
>was looking for the 3 hole variety since his original query was about
>289balancers and not 302 pieces so I focused my answer there.I found it odd
>that the SVO steel balancer listed that it could be used with so many
>different Ford engines.I just read that from the side of the actual part
>box,right here(the piece has both 3 and 4 hole bolt patterns integral to
>it,so either pulley would work) I further assumed that the SVO piece would
>work with a 260,since Ford says that it would work with a 289.I think I am
>safe here since a 260 is not the subject of this question,but if someone had
>a need to use the SVO part in this manner,they should ask thier Ford dealer
>for more info,since we know what happens to people who "ASS UME"
>By the way Ford was using 4 bolts to fasten the pulley to the balancer hub
>way before the 1980-81 change over to 50 oz <A
>HREF="http://www.ventureproducts.com/catalog1382.html";>Harmonic Balancers</A>
>.look at item #V1066 most of the way down the page.(click on the buy/more
>info black box for a larger picture once you are there)
> Have a Great Day!
>Tony
Robert L. Palmer
UCSD, Dept. of AMES
619-822-1037 (o)
760-599-9927 (h)
rpalmer@ucsd.edu
rpalmer@cts.com
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