matt gti78 0 Posted September 16, 2006 Guys, I'm miffed at the moment , over the last 3 weeks bit by bit I took the cylinder head off, to replace the valve oil seals and all the gaskets. While following the haynes manual on refitting the cylinder head bolts, it states the following, though some of you might know already: Stage 1 - 60nm Stage 2 - After slackening - 20nm Stage 3 - Angle 300 deg's While doing stage 3 on the back right headbolt (No.9) it went to far and stripped the bolt, at this time I thinking the engine is F****d, but someone has told me about a recoil kit which I thought you could never use on something like a cylinder head. So what I need to know please, is can a recoil kit be used to create a new thread and will it hold and will I need to replace all the headbolts again. Also is there another way of tightening the bolts other than using haynes instructions . Share this post Link to post Share on other sites
PumaRacing 2 Posted September 16, 2006 You might wish to read my website. Share this post Link to post Share on other sites
matt gti78 0 Posted September 16, 2006 I'm sorry I missed lead you, it's the threads in the block that has stripped out. My Father suggests using a re-coil kit with a coil length of approx. 25mm. But worries if this will hold using the Haynes method in tightening the head bolts. But thinks your method would be a better option of tightening the headbolts. Share this post Link to post Share on other sites
inferno 1 Posted September 16, 2006 generally i tend not to use helicoils for anything! although a mate who works with ducatis swears by time serts... aparently they can hold a 916 head together. so i used one on a clio 16v gearbox mount, and it appeared to be ok! the bolt must of cused damage for a reason... was there water in the hole? or was it the bolt that needs a spacer? as for using a helicoil on it, ill leave that to some1 with more experience... id say no ... but it may have been done. Share this post Link to post Share on other sites
M3Evo 0 Posted September 17, 2006 None of the holes are blind so water being in one is a non starter. matt gti78, look at Pumaracing's website for info on torquing the head as he says, there is another way from the Haynes! Share this post Link to post Share on other sites
gtimon 0 Posted September 18, 2006 None of the holes are blind so water being in one is a non starter. Hi, I'm new to this site and reading various topics, but I don't understand the meaning of the above quote ?? Share this post Link to post Share on other sites
jim21070 2 Posted September 18, 2006 Hi, I'm new to this site and reading various topics, but I don't understand the meaning of the above quote ?? Hi and welcome! What is meant here is that all the head stud holes go right through and are open at the end, therefore it is not possible for water to settle in them and cause a hydraulic lock when torquing down the studs and stripping the threads as a result. If you look on the block, you can see the very ends of each head stud poking out of their respective holes. Hope that helps... Share this post Link to post Share on other sites
