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Re: [ihc] 152/196 Flywheels
At 8:23 PM 7/3/04, JefGruwell@domain.elided wrote:
SV = Small V-8, which means the 266/304/345/392 V-8's.
"Bob weight" is a specific term referring to the technique used to balance
any V-8 engine which has a 900 crankshaft design (as opposed to a 1800, or
'flat' crankshaft design).
inline fours, inline sixes, straight eights, flat crank V-8'x, & V-12's do
NOT need any bob-weight in order to balance them. (Although one should note
that inline fours and flat crank V-8's are only in 'primary' balance, they
have 'secondary' imbalances.
Do not confuse 'bob' weights with counterweights--they look the same, but
serve entirely different functions.
Greg
>In a message dated 6/5/2004 8:14:36 AM Pacific Standard Time,
>bearbvd@domain.elided writes:
>>From: <JefGruwell@domain.elided>
>>To: <tsm1@domain.elided>
>>Cc: <ihc@domain.elided>
>>Sent: Friday, June 04, 2004 13:16
>>Subject: Re: [ihc] 152/196 Flywheels
>>
>\>
>>> I recall reading some where that the IHC 4 cyl are externally balanced
and
>>> v8s are internally balanced but I'm not sure IIRC.
>>
>>I think you've got it backwards... generally, Inline engines tend to be
>>internally balanged due to their design...
>>
>He DOES have it backwards. The SV8's have some of their bob weight
>external, which is, CONTRARY to magazine writer and hot-rodder wisdom, a
>GOOD thing.
>
>The IHC fours based on the SV's have no need for bob-weights, and therefore
>have no external balance weights. NO I-4 or I-6 engine NEEDS any bob
>weights.
>
>Greg
>Hey Greg,
>
>Please help me understand if you have time. I'm not sure what your reffering
>to as bob weights. The harmonic Balancers on my IHC 152/196 have bob wieghts
>180 degrees apart from each other, where as my 304, and all the other IHC V8
>engines I've had did not have these counter weights.
>
>What am I missing?
>
>What does SV mean?
>
>Thanks
>Sincerely,
>Jeff Gruwell
>
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>charset=US-ASCII">
><META content="MSHTML 6.00.2600.0" name=GENERATOR></HEAD>
><BODY style="FONT-SIZE: 10pt; FONT-FAMILY: Arial; BACKGROUND-COLOR:
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><DIV>
><DIV>In a message dated 6/5/2004 8:14:36 AM Pacific Standard Time,
>bearbvd@domain.elided writes:</DIV>
><BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue
>2px solid"><FONT face=Arial>>From:
><JefGruwell@domain.elided><BR>>To: <tsm1@domain.elided><BR>>Cc:
><ihc@domain.elided><BR>>Sent: Friday, June 04, 2004
>13:16<BR>>Subject: Re: [ihc] 152/196
>Flywheels<BR>><BR>\><BR>>> I recall reading some where that
>the IHC 4 cyl are externally balanced and<BR>>> v8s are internally
>balanced but I'm not sure IIRC.<BR>><BR>>I think you've got it
>backwards... generally, Inline engines tend to be<BR>>internally
>balanged due to their design...<BR>><BR>He DOES have it backwards. The
>SV8's have some of their bob weight<BR>external, which is, CONTRARY to
>magazine writer and hot-rodder wisdom, a<BR>GOOD thing.<BR><BR>The IHC
>fours based on the SV's have no need for bob-weights, and
>therefore<BR>have no external balance weights. NO I-4 or I-6 engine NEEDS
>any bob<BR>weights.<BR><BR>Greg</FONT></BLOCKQUOTE></DIV>
><DIV>Hey Greg,</DIV>
><DIV> </DIV>
><DIV>Please help me understand if you have time. I'm not sure what your
>reffering to as bob weights. The harmonic Balancers on my IHC 152/196 have
>bob wieghts 180 degrees apart from each other, where as my 304, and all
>the other IHC V8 engines I've had did not have these counter
>weights.</DIV>
><DIV> </DIV>
><DIV>What am I missing?</DIV>
><DIV> </DIV>
><DIV>What does SV mean?</DIV>
><DIV> </DIV>
><DIV>Thanks</DIV>
><DIV>Sincerely,</DIV>
><DIV>Jeff Gruwell </DIV></BODY></HTML>
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