[T3] 72 MS EFI project

[Jim Adney]

On 5 Jul 2013 at 14:58, Daniel K. Du Vall wrote:

> OK finally getting down to the last few steps. Of the MS EFI project on my 72SB.
> Here are a few more pictures.
> 
> http://volkswageninsanity.us/Postings/FI/IMG_20130705_070242.jpg
> 
> http://volkswageninsanity.us/Postings/FI/IMG_20130705_070302.jpg
> 
> http://volkswageninsanity.us/Postings/FI/IMG_20130705_070357.jpg

The things that strikes me are the hose clamps on the hoses between 
the IAD and the intake air runners. Those are not necessary if you do 
things right, and they are counterproductive because those joints 
need to be able to slide as the engine expands and contracts with 
temp changes.

Those 3 parts should be installed with all their bolts loose and only 
tightened when it's assured that all the parts are aligned. If any of 
the intake pipes won't align, you can actually bend them and align 
them. I like to do this with the 4 hoses actually slid back on the 
runners, then slide them forward onto the IAD once the alignment is 
correct.

It's common for the IAD to be bolted in place and then everything 
else forced to try to conform to it, but if you'll leave the IAD 
loose until the end you'll have much better luck in both the short 
and long run.

This doesn't work well if the hoses have been distorted by a previous 
installation. If you're trying to work with badly warped hoses, you 
can usually get them to seal without hose clamps, if you try 
adjusting as above, AND rotating the hoses to get the offsets in the 
right orientation.  

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Jim Adney, jadney at vwtype3.org
Madison, Wisconsin, USA
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