Re: [T3] another question - engine assembly

[David Sanderson <porschedave@rennlist.net>]

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So I am confused about these nuts. I appear to have two styles, both 
fit the studs. The first is a regular nut that fits a 15 mm socket. 
The other is larger and fits a 19 mm socket. The other difference is 
the larger nut has a relieved area on one surface suggesting that 
there is  something that is suppose to recess in there, like perhaps 
a small plastic thingy. I don't suppose these plastic bits are still 
around?

Dave

At 8:52 PM -0600 2/8/05, Jim Adney wrote:
> On 8 Feb 2005 at 23:46, Jens Vagelpohl wrote:
>
> >  Please correct me if I am wrong, but from my (non-T3) experience
> >  rebuilding T-1 engines in the mid to late 80s I distinctly remember the
> >  nuts that were provided by VW to go with the cross-crancase bolts
> >  having a plastic insert that you were supposed to mount facing the
> >  crancase. This plastic insert protruded from the nut and provided the
> >  seal, it got compressed during tightening.
>
> Your memory is correct. The nuts with the plastic inserts were introduced in
> '70 or '71 but the engines that came with them also got the O-rings which had
> been introduced a few years earlier. I'm not actually sure whether the late
> nuts were meant to reduce oil leaks or to lock the nuts in place. 
> They actually
> seem to do both.
>
> The one disadvantage of those late nuts is that you are only 
> supposed to torque
> them to a lesser torque. I prefer to use the higher torque and Loctite.
>
> The early (plain) nuts were used with flat washers, while the late 
> nuts used no
> washers.
>
> --
> *******************************
> Jim Adney, jadney@vwtype3.org
> Madison, Wisconsin, USA
> *******************************
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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--
David Sanderson
(604) 822 - 4361 or (604) 255 - 4935 voice
(604) 822 - 6842 fax
porschedave@rennlist.net
1977 911S 3.0 L
1965 Sunroof Notch
1966 Notch
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