I like many other stag owners have started the winter repairs . In my caise I have a cooling header tank which is pressurising in 30 to 40 seconds on a cold engine . Yes you've got it , it's that head gasket time again !
I am a Saab Master Technician by trade and yes I am old enough to have worked on Saab 99's with half of the V8 engine fitted . Now Saab have had many years more experience in the delights of head bolt siezure and falseably removing a stuck head with all manner of pullers pushers saws etc., and eventually came up with a way of successfully removing seized head bolts that I have used ever since . Now I have done my Stag I can confirm that it still works on my heads , with all the long seized head bolts removed successfully . ( The most difficult bolt took approximately 8 mins to remove conpletly ) .
So what do you need tool wise to succeed ?? Well it's all done by ultra sonicsc !! The special tools needed apart from the usual spanners etc.are :- a compressor , air chistle and a rivetting head for the chistle .
You quite simply lock the bolt with two nuts leaving the top 6 or 7 mm of stud exposed ( say the top 2 threads plus the sloted bit ) . Then you apply the air chistle to vibrate the bolt . A well stuck bolt looks like it's on fire with smoke streeming out of it . With your spanners on the lock nuts you GENTLY try to undo it . IF it's tight - vibrate some more - if it's lose then undo it , sometimes applying a bit more vibration if it goes tight again . Full job on one bolt is between one and eight minutes , I have yet to exceed ten minutes on a single bolt .
I hope this helps those who are having problems
Sonett
I am a Saab Master Technician by trade and yes I am old enough to have worked on Saab 99's with half of the V8 engine fitted . Now Saab have had many years more experience in the delights of head bolt siezure and falseably removing a stuck head with all manner of pullers pushers saws etc., and eventually came up with a way of successfully removing seized head bolts that I have used ever since . Now I have done my Stag I can confirm that it still works on my heads , with all the long seized head bolts removed successfully . ( The most difficult bolt took approximately 8 mins to remove conpletly ) .
So what do you need tool wise to succeed ?? Well it's all done by ultra sonicsc !! The special tools needed apart from the usual spanners etc.are :- a compressor , air chistle and a rivetting head for the chistle .
You quite simply lock the bolt with two nuts leaving the top 6 or 7 mm of stud exposed ( say the top 2 threads plus the sloted bit ) . Then you apply the air chistle to vibrate the bolt . A well stuck bolt looks like it's on fire with smoke streeming out of it . With your spanners on the lock nuts you GENTLY try to undo it . IF it's tight - vibrate some more - if it's lose then undo it , sometimes applying a bit more vibration if it goes tight again . Full job on one bolt is between one and eight minutes , I have yet to exceed ten minutes on a single bolt .
I hope this helps those who are having problems
Sonett
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