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Re: [T3] No wonder its sluggish/GEX


On 30 Dec 2001, at 0:43, Bryan Mitchell wrote:

> I retorqued all four nuts under the valve cover. the two on cylinder 1
> did fine but both studs on #2  are pulling the case savers out of the
> case. They are small studs. I tightend them down as much as possible
> and reassembled teh valves. 

Did you use the 8mm torque specs, or were the specs irrelevant 
becasue the studs were already pulling out? We see constant and 
continuing problems on this list becasue of over-torquing of 8mm 
studs. The correct torque is low, so this is easy to do.

The 8mm studs are a good thing, but they are not mentioned in the 
type 3 manuals because they never came as stock on type 3 
engines. The only torque spec in the type 3 manuals is that for 
10mm studs, so you have to go to a beetle manual to find the right 
spec for the 8mm studs. They cannot be torqued to the same spec 
because the same torque produces much more pulling force on the 
8mm stud, because of the different thread pitch.

I can never remember what the right torque is for these, so I always 
refresh my memory with the Bentley manual when I need to know. 
These are critical nuts to torque carefully, so you really need to 
use a torque wrench here.

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

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