[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]

Re: Ammended MC head removal




> -Note:
> -DO NOT REUSE HEAD BOLTS! THEY ARE STRETCHED.

> - -- 
> -Igor Kessel
> -Two turbo quattros

> The Bentley specifically states that it is not necessary to replace the 
> head bolts.  "Polygon cylinger head bolts can be reused after making 
> repairs and do not have to be replaced." 15.4.  Did you have a bad 
> experience with reusing them or ??
> -Matt Martinsen

True in both the 5k and the 200 Bentleys.

I noticed another error in this section...

5k Bentley

MC Engine compression	8-11 bar (116-159.5psi)
			6.5 bar (94.3 psi) wear limit

200 Bentley

MC Engine compression	8.5-12 bar (123-144!!!!!!psi)
			6.5 (92 psi) bar wear limit


Let's try 175 psi for that 12 bar, not 144 and 94.3
is more believable for 6.5 bar, not that a couple of psi
makes any difference!

So, we can probably assume that the lower numbers (116 to 160)
are for the earlier MC and the higher numbers (123-175) are for
the 89.5 on MC.

Orin.