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Re: 4K tranny - .75 or .80 5th??



At 11:56 AM 1/23/01 , Brett Van Sprewenburg wrote:
> > In a message dated 1/23/01 12:03:12 AM Pacific Standard Time,
> > thescirocco@juno.com writes:
> >
> >
> > > I'm deciding between .71 and .75 for my 3.94:1 2H, and I'm leaning
> > > towards the .71 5th gear, out of my RIP '81 S.
> > >
> > > With 3.67:1, I'd use the .75 or .80 5th gear.
> > > With 3.89 and 3.94:1, I'd use a .71 or .75 5th gear.
> > > ...Depending on if I want an overdrive 5th gear or not.
> > >
> > >
> >
> > Another consideration is that the .75 is a fine tooth gear and is more 
> likely
> > to break. The .71 should be a coarse tooth...not sure about the .80, but I
> > suspect it isn;t quite as fine as .75 ...but it depends on the tooth count.
> >
> > Mike
> > http://www.geocities.com/vwmikel
>
>I heard this also, and when I got the .75 gear, looking at it you could tell
>it was a slightly 'finer' cut gear, but didn't appear weak because of it
>though.  I have heard of very high HP cars stripping gears occasionally,
>and all of our cars probably chip a reverse gear (a straight cut non-syncho
>mesh gear), but how much torque could we possibly be putting on 5th?  Enough
>to cause helical cut mesh gears to break off?  Seemed an unlikely enough
>occurance to me, I'm not worried about it, especially because it's 5th...not
>one of the gears I'm likely to _really_ bang around anyway.  I'll be the first
>to report it if I blow out my 5th gear though! :)

Exactly -- if you're grinding gears on the 4th to 5th shift, it's time to 
go and buy a fucking automatic.

Sheesh.

Jason









----------
1987 Scirocco 16v
1988 Mercedes 190E Sport Euro


http://www.scirocco16v.org


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