No subject

at about 105 to 125 lbft. Once the torque levels off, I halt each angular 
step in  fitting the  cylinderhead.  Retorquing to plastic at the next stage 
seems limited to about 100 lb ft. That is why I suggest taking bolts to 90 
lbft
[ I read somewhere that a bolt taken briefly into plastic range and left for 
a while can actually get stronger than one torqued to it's final level all 
in one go... Not sure if that applies to 'plastic' bolts or high tensile 
ones though]
 I can reuse the bolts simply because I haven't stretched the bolt very much 
:o) Torquing slowly avoids hydrolock as the oil squelches out. Solid baked 
crud is clearly another matter. A 12mm 'stretched by the book' bolt leaves 
about 3 turns space at the bottom IIRC. My way of torquing to yield only, 
leaves me more space...

Does anyone know how many teeth on a Quantum /Dasher flywheel? I have a 
spare somewhere but it's buried under my obsessive collecting :o)

Mark


----- Original Message ----- 
From: "William J Toensing" <toensing at wildblue.net>
To: <vwdiesel at vwfans.com>
Sent: Monday, November 02, 2009 4:23 AM
Subject: [Vwdiesel] Smokey, bubley engine


>
> Mark, you suggested loosen & re-torque to 90 # psi, nothing to loose. My 
> question is, at what point will the bolts or studs brake, or the block 
> crack or the threads strip? On my '81 Dasher diesel, I torqued the 
> original head bolts to the factory/Bentley recommended 50 or 55 #psi, 
> would have to look back in the bentley,but the right front bolt caused the 
> block to crack. On my Model A Ford, several years ago, I was torquing to 
> the recommended (50#psi, I think) & a couple of the studs broke. China or 
> Taiwan sourced from Sacramento Vintage Ford. They replaced the broken 
> studs but not the new gasket I had to buy. That is why I am afraid of 
> over-torquing. From what I recall, on the Model A, it took progressively 
> more strength to bring it up to 50 #psi & then it started getting easier. 
> If that happens again, I will stop when that happens. I raise this 
> question because I think allot of you are far more experienced than I, & 
> would like comments on this as I haven't started trouble sho
> oting my Mercedes SD 300 yet. I first plan to check the glow plugs & do a 
> compression check but do suspect a blown head gasket as the prior owner 
> said it "did over heat a little bit", & can see where re-torquing might 
> correct this but I don't like dealing with broken head bolts or studs, 
> especially when they break off in the block.
> Bill Toensing, Nevada City, CA
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