Re: [T3] a few questions

["Jim Adney" <jadney@vwtype3.org>]

On 1 May 2001, at 23:43, Benjamin Hess wrote:

> Just a couple of questions: first, I seem to be having trouble putting
> my heads back on. I have upgraded to 1835cc jugs and cylinders. When
> putting the rockerarms back on they hit the 2 center head studs. Has
> anyone else had this problem? I have a thin and thicker spacer under
> the rockers. Is this right, because there is nothing said about
> spacers in any book that I have?

I don't see how this could be unless these studs are not screwed 
all the way into the case, especially since you mention that you 
have added shims under the rockers. Did you shorten the pushrods 
rather than modify the rockers for swivel foot adjusters? You need 
to make all your changes here carefully.

Rocker geometry has a BIG effect on valve guide life. This is not 
covered well in ANY of the books I have come across, although 
there is a hint in the Bill Fisher book. The best advice is to stick to 
the stock geometry as long as you're using stock valve springs. If 
you change springs you need to redo the calculations, which are 
involved and I have not done that for non-stock springs.

> Next, I am going to be running the same duel carbs that were on the
> 1776cc, do they need to be rejetted? 

Probably, but only because you have probably changed the 
compression ratio.

> Ok last one, I am going to put pop outs in my 71 square, does it
> already have the holes for the screws and hinges? 

Early 71s have the holes but not the reinforcing plates; late ones 
do neither.

-
Jim Adney
jadney@vwtype3.org
Madison, WI 53711-3054
USA

-------------------------------------------------------------------
Search old messages on the Web!  Visit http://www.vwtype3.org/list/