oops....gasser head bolts used on 81 1.6 NA

[78sharpshooter]

Guy at napa matched my old head bolts and after getting everything back together and killing time on this forum I saw that this is a no no. I have 8 of the old head bolts (chopped and slotted 2 to hold the gasket on when putting the head back on). I have only warmed up the engine and have not driven it yet so would it be wise to replace the head studs with the original ones doing it one at a time?

[Mark(The Miser)UK]

Guy at napa matched my old head bolts and after getting everything back together and killing time on this forum I saw that this is a no no. I have 8 of the old head bolts (chopped and slotted 2 to hold the gasket on when putting the head back on). I have only warmed up the engine and have not driven it yet so would it be wise to replace the head studs with the original ones doing it one at a time?

M11 gasser bolts are 2mm longer than the diesel ones. 
I suspect that this 'swap' may have been the cause of at least some 'block death' 

 I don't know how deep the block holes are on early blocks, but M12 holes with stretch facility' are only about 2 turns from bottoming out

[maxfax]

The holes are plenty deep for the gasser head bolts..   The worry would be whether they and/or the block are strong enough.  The gasser bolts are stretch bolts so they require a different torque procedure..  I think the spec is 54 ft/lbs plus one quarter turn..  I'd be a bit leary of the block cracking on that last quarter turn..   I have heard a few claims of the gasser bolts working okay..  Seems like I get one of these engines in front of me with gasser bolts, the reason I have it is because the HG failed and/or the block is cracked...