Engine went Bang!
#51
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[QUOTE=m1bjr,Feb 15 2008, 03:09 PM]
Hunt about for a GOOD machine shop.
You can fill the head with something (like shaving gel) with the piston at BDC.
Make the insert (one piece sleeve like type best as no tang to snap off) and simply rotate the engine over TDC to expell the swarf. As mentioned, alloy is not too big a deal - recovering a tang end of a traditional helicoil is.
If done properly and bonded in you should get away with it for years and ought to cost less than
Hunt about for a GOOD machine shop.
You can fill the head with something (like shaving gel) with the piston at BDC.
Make the insert (one piece sleeve like type best as no tang to snap off) and simply rotate the engine over TDC to expell the swarf. As mentioned, alloy is not too big a deal - recovering a tang end of a traditional helicoil is.
If done properly and bonded in you should get away with it for years and ought to cost less than
#54
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Originally Posted by eho,Feb 15 2008, 08:34 PM
is the helicoil insert a more permanent / worry free solution?
If it does go wrong in 3-4 years time you will have more than got your 100 notes worth.
Edit: and given that Platinum plugs lasts 70k plus I doubt you will be changing them too often so I doubt you will have further problems
#55
Helicoil is not a solution at all for this application. it is also possible the thread in the head is too far damaged for the helicoil to work.
a solid insert should be used, it would be a one time permanent fix, they are designed for this application exactly a helicoil is a general thread repair solution
a solid insert should be used, it would be a one time permanent fix, they are designed for this application exactly a helicoil is a general thread repair solution
#56
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Originally Posted by C&S Evo7,Feb 15 2008, 11:11 PM
Helicoil is not a solution at all for this application. it is also possible the thread in the head is too far damaged for the helicoil to work.
a solid insert should be used, it would be a one time permanent fix, they are designed for this application exactly a helicoil is a general thread repair solution
a solid insert should be used, it would be a one time permanent fix, they are designed for this application exactly a helicoil is a general thread repair solution
I agree though an insert will be the better option
#57
Like said, depends upon how much meat is left in the old hole really.
Trouble with helicoils is they can pick up, especially with something like plugs that heat cycle and get mucky over time. Agree that if you can engineer it, a proper sleeve insert is a better option.
Worst case it's head off, but I wouldnt go swapping any parts out for exactly the reasons above.
Quite possible to do 'in situ' with a long enough tool
Trouble with helicoils is they can pick up, especially with something like plugs that heat cycle and get mucky over time. Agree that if you can engineer it, a proper sleeve insert is a better option.
Worst case it's head off, but I wouldnt go swapping any parts out for exactly the reasons above.
Quite possible to do 'in situ' with a long enough tool
#58
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i need the head off reguardless, i think it was the spark plug oil gasket that causes this in the first place. the head off option also gives a better repair, (helicoil / solid insert not decided, i talk to the mechanic when the head is out).
while i have the head off im thinking might as well spend a little extra and get it polished.
as regards to the bonnet repair, still awaiting for quote. again if it is too expensive, thinking of spend a little extra and get it carbon. i think i can pick up a carbon for
while i have the head off im thinking might as well spend a little extra and get it polished.
as regards to the bonnet repair, still awaiting for quote. again if it is too expensive, thinking of spend a little extra and get it carbon. i think i can pick up a carbon for
#60
Originally Posted by lovegroova,Feb 14 2008, 10:08 AM
So we have 5 failures, how many have been from people who have either used non-oem plugs, have made serious mods or have done diy maintainance?
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