[6pack] Engine Front Damper Question

[James Henningsen]

Bob:
Thanks for the input!  Definitely not hitting the 6k revs, although I'd like 
to be able to :) 5300 max for me with current engine.  Looks like I will be 
pulling the extension , installing my new Spal super slim electric puller 
fan, and installing Rick Patten's extension eliminator kit.
Jim Henningsen

----- Original Message ----- 
From: "Robert Lang" <lang at isis.mit.edu>
To: "James Henningsen" <trguy at cfl.rr.com>
Cc: <6pack at autox.team.net>
Sent: Tuesday, January 06, 2009 7:00 PM
Subject: Re: [6pack] Engine Front Damper Question


> On Tue, 6 Jan 2009, James Henningsen wrote:
>
>> Team:
>>
>> There is a kit that allows you to remove the front hub (fan connects to 
>> it)
>> that connects to the harmonic dampener if using an electric fan.  The kit
>> includes a new bolt and small round "whosey watchit" to attach to the 
>> harmonic
>> dampener. Is the front hub needed for additional dampening or is it ok to
>> remove and install this kit?  I had heard that the extra hub was needed 
>> to
>> help dampen the crank.  My engine is tweaked but I never balanced the 
>> crank.
>
> You don't need the weight of the fan extension. In fact, that weight is 
> not damped, it's connected to the crank (as opposed to the actual 
> dampening which is done by the outer ring of the stock dampener.
>
> The power increase the the other Bob refers to is really realized loss of 
> parasitic drag from the mechanical fan (which can be as much as 8 HP - BIG 
> GAINS FOR LITTLE OR NO $$$).
>
> About the only possible issue with the crank extension eliminator is 
> something that you might see if you turn your motor to big revs (like 
> above 6000). I've seen the issue and can discuss off list. Interestingly, 
> if you turn your motor to 6k+, you should be looking at a higher 
> performance aftermarket dampener anyway (unless you're cheap, like me).
>
> :-)
>
>> Thanks in advance,
>> Jim Henningsen
>> Maitland, FL
>> 75 TR6 CF35914U
>
> regards,
> rml
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