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Thread: Egr bolt thread stripped?

  1. #1
    Regular Member felixx's Avatar
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    Arrow Egr bolt thread stripped?

    Just recently.I have been "experimenting" with my old EGR valve and a blanking plate.Anyway,in the course of taking it off and putting it back on so many times,I stripped the thread on the bottom bolt,(the one that helps hold the engine cover bracket on),it would tighten up but would slip at the point when it was at it's maximum torque,(if that's the right term).
    I decided to see if I could find a long bolt as a temp fix,(I was going to get it helicoiled).However,although the head is 10mm,the thread is 7mm,so I went to a local engineering suppliers who stocked them and bought 4,(well you never know if the others would strip),with washers and nuts etc.It fitted fine.(It would appear that when they threaded the hole they did it the full length of the hole which is a lot longer that the existing bolt).
    I tightened the bolt up then secured the EGR valve in place with the washer and bolt then cut the head off the bolt and fitted the bracket.
    I just thought I would share this with you all as I know many of us are having problems with our EGR valves and to get the bolt threads re-tapped or helicoiled could turn out to be a very expensive exercise.FELIXX.

  2. #2
    Regular Member Dan_BlackSRi's Avatar
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    Quote Originally Posted by felixx View Post
    ....and to get the bolt threads re-tapped or helicoiled could turn out to be a very expensive exercise.FELIXX.
    No its not, the kit is about £18 and takes about 30 mins to do all 4. I did mine and was far better than OEM (as helicoil'd holes are anyway).

  3. #3
    Regular Member felixx's Avatar
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    Thumbs up

    Quote Originally Posted by Dan_BlackSRi View Post
    No its not, the kit is about £18 and takes about 30 mins to do all 4. I did mine and was far better than OEM (as helicoil'd holes are anyway).
    That's great to know as when I was in the suppliers getting the bolts and told him what thay were for,he gave me the phone mumber of a mobile engineer who did them,and that they also sold a kit which cost around £20 per bolt.
    When I rang this engineer,he informed me that he charged on "time" and couldn't give me an exact price,Mmmmm I thought,f**k it,I'll give the bolt a try first,I've got nothing to lose!!!!.Thankfully it worked ok.(By the way,at the suppliers,he did say that the fix would make the thread stronger than the original thread,and that Rolls Royce helicoiled all their fittings as standard.) FELIXX.

  4. #4
    Regular Member Dan_BlackSRi's Avatar
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    Vehicle : Vectra SRi

    Trim : XP1

    Engine : 1.9 CDTi 150

    Year : 2007

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    Quote Originally Posted by felixx View Post
    That's great to know as when I was in the suppliers getting the bolts and told him what thay were for,he gave me the phone mumber of a mobile engineer who did them,and that they also sold a kit which cost around £20 per bolt.
    When I rang this engineer,he informed me that he charged on "time" and couldn't give me an exact price,Mmmmm I thought,f**k it,I'll give the bolt a try first,I've got nothing to lose!!!!.Thankfully it worked ok.(By the way,at the suppliers,he did say that the fix would make the thread stronger than the original thread,and that Rolls Royce helicoiled all their fittings as standard.) FELIXX.
    Helicoil is far better than OEM, thats for sure.

    £20 per bolt is very expensive, the helicoil kits have the tools required and a pack of about 20 threads - these are about £20.

    http://www.transtools.co.uk/store/pr...m-x-1-5mm.html

    You may find most places won't helicoil 'in situ' and would require removal of the manifold, but access is fine and can be easily done with a 90 degree drill.

  5. #5
    Regular Member felixx's Avatar
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    Quote Originally Posted by Dan_BlackSRi View Post
    Helicoil is far better than OEM, thats for sure.

    £20 per bolt is very expensive, the helicoil kits have the tools required and a pack of about 20 threads - these are about £20.

    http://www.transtools.co.uk/store/pr...m-x-1-5mm.html

    You may find most places won't helicoil 'in situ' and would require removal of the manifold, but access is fine and can be easily done with a 90 degree drill.
    A great big double thanks for that info.I've saved their inumber and will be contacting them if I have any further problems.(It just goes to show how forums like this,achieve what they set out to do,I've saved loads of money on unnecessary garage bills since joining,and improved the standard of my car!!).Thanks once again.FELIXX.

  6. #6
    Regular Member the-wizard's Avatar
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    Other members have done the exact same thing!, they also have used longer bolts. the egr doesn't need mudering when retightening!.

  7. #7
    Regular Member felixx's Avatar
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    Arrow

    Quote Originally Posted by the-wizard View Post
    Other members have done the exact same thing!, they also have used longer bolts. the egr doesn't need mudering when retightening!.
    Now he tells me!!. FELIXX.

  8. #8
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    I have just came accross the same problem, one of the bolts seem to spin and not tighten, any idea how i would track down this bolt or what you call it? Im not v clued up on engineering etc..

    btw is it still gonna be a tight fit with the 3 Bolts?

  9. #9
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    i no longer have the vanity cover.

    i found replacement bolts in B&Q with same thread and a reduced length ( beacuse i no longer need the bracket for the vanity cover.

    £3.00 for a bag of eight or ten ( can't remember exact number )

    thats cheap....

  10. #10
    Regular Member Dan_BlackSRi's Avatar
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    Vehicle : Vectra SRi

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    Quote Originally Posted by Vizzeh View Post
    I have just came accross the same problem, one of the bolts seem to spin and not tighten, any idea how i would track down this bolt or what you call it? Im not v clued up on engineering etc..

    btw is it still gonna be a tight fit with the 3 Bolts?
    You won't get a proper seal with 3 bolts, but will be more than drivable for sure. If they won't tighten its almost a certainty that the threads in the manifold have been shreaded, the bolt threads should be ok.

    The "actual" bolts are bought from VX (not cheap, about £14 for the 4 needed) although others can be bought.

    Watch out about going to long, as if it hits the bottom of the hole and then it still tightened it can strip the threads, and heli-coiling is needed.

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