Question about 1998 BMW 5 Series

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I have striped head bolts on1998bmw there a helly coil solution?

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Yes, you can use a heli-coil kit to repair the threads in the engine block, make sure that you do use the right size drill bit that is required by the heli-coil kit, and be sure to use steel thread inserts.

Posted on May 10, 2010

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Hi...yes there is but make sure that you get a professional to put them in as they are very awkward and sometimes they do not take very well...hope this helps

Posted on May 10, 2010

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Yes there are many different types of coils that you can replace it with, if it were me i would google the thread size to find the same type. if you can't find the same thread then you can replace it with a standard coil

Posted on May 10, 2010

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Need head bolt size on 280ZX , need heli coil size

Heil coil sizes are not exact if you understand what they are made to do . If it fits it will work to a point . But your talking head bolts that need to be torqued twice and in sequence This Is a datsun vary cool car i would try to retape the block first . But you would need to pull the head off to do this . Idon't know how it got striped but your best bet is to fix the threads in the block even if you have to drill and oversize it and up size the bolt . Not a lot of easy ways out of this if i understand you correctly

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Two bolts are striped on 1983 280ZX, what size are head bolts to get right size heli coil and how hard is it to install heli coil in block ?

You should take the stripped bolts with you to purchase the new bolts at the auto store at the same time you buy the heli-coil inserts. While I could give you a possible size, (some are shorter, some longer in some engines) you have the exact part right there with you. Go ahead and take a good head bolt with you too.

The inserts are of brittle steel and must be installed carefully, but, this is done frequently for the same reason you need them without any problem.

There is also the option of tapping the damaged threads up to the next size, and using a different size head bolt, but you have to decide which is best based on your experience level and the availability of parts.

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My 99 cavalier is leaking from the top of my fuel tank... one of the bolt that holds the strap is striped... how do i remove the bolt with out making a spark... what would leak on the top of the fuel tank

most likely the leak is the tank its self, dirt sets on top of the tank holding moister on the top of the tank causing little rust pin holes. did you strip the bolt head or the threads? if just the bolt head they make a strip out socket you can get them from your local snap-on tool truck or some sears stores keep them and all can order them, but if you striped the threads you will have to cut the bolt head off and i suggest you have a pro do it for obvious reasons.

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