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Re: [T3] another question - engine assembly


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.

-- 
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Jim Adney, jadney@vwtype3.org
Madison, Wisconsin, USA
*******************************

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