28v6r 0 Posted September 8, 2004 Report Share Posted September 8, 2004 Just got the VR back from an independant specialiist and was informed that one of the plugs had been Helicoiled, meaning that somewhere in a past life some "Ar**" bandit has cross threaded the plug and stripped it's thread...Now my question is thisa/ How safe is Helicoiling, especially on a pressurised part i.e plug??And b/ How many of you on the board are aware that your car may have had this and have it currently on their car??Otherwise the Ol' Gal passed a major service and was told hat she was in good nick for her year '94. Incidentally the car was in for a MAJOR service, water pump & timing belt.Otherwise quite a happy Bunny.... Link to post Share on other sites
SankysVR6 1 Posted September 8, 2004 Report Share Posted September 8, 2004 Otherwise the Ol' Gal passed a major service and was told hat she was in good nick for her year '94. Incidentally the car was in for a MAJOR service, water pump & timing belt.Otherwise quite a happy Bunny....dont they have timming chains Link to post Share on other sites
SankysVR6 1 Posted September 8, 2004 Report Share Posted September 8, 2004 Otherwise the Ol' Gal passed a major service and was told hat she was in good nick for her year '94. Incidentally the car was in for a MAJOR service, water pump & timing belt.Otherwise quite a happy Bunny....dont they have timming chains Link to post Share on other sites
acf8181 0 Posted September 8, 2004 Report Share Posted September 8, 2004 er...yeah, i was about to ask how they managed to change the timing belt...as they dont have one! Link to post Share on other sites
28v6r 0 Posted September 8, 2004 Author Report Share Posted September 8, 2004 Ahhhh... but that was done to see if anyone out there was paying attention .... now about this helicoiling bit... :? :? Link to post Share on other sites
acf8181 0 Posted September 8, 2004 Report Share Posted September 8, 2004 i think its pretty foolproof. if you're really worried then a new head will be needed. Link to post Share on other sites
Coddy 0 Posted September 8, 2004 Report Share Posted September 8, 2004 If a helicoil is fitted correctly there is absolutely no reason it should cause any problem. Also it would be virtually impossible for anyone to notice it during an inspection or when changing the plugs. Link to post Share on other sites
tandino 1 Posted September 9, 2004 Report Share Posted September 9, 2004 Only problem with helicoiling in some instances is if its a steel helicoil in a alloy head the heat transfer between these two materials is not great - this can lead to plug breakdown through overheating because the plug cant disperese heat quickly enough.This is highlighted more in forced induction cars...Pete. Link to post Share on other sites
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