R8/R10 cylinder head studs.
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  1. #1
    1000+ Posts Frans's Avatar
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    Default R8/R10 cylinder head studs.

    Hi all,

    Has anybody seen studs for the manifolds available that is a reducing stud? M10/M8 studs. M10 to screw into the head after a thread repair and then return to M8 for the nuts that pull the manifolds up to the gasket. Or is it something that I will have to make?

    Regards'

    Frans.

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  2. #2
    1000+ Posts robmac's Avatar
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    Quote Originally Posted by Frans View Post
    Hi all,

    Has anybody seen studs for the manifolds available that is a reducing stud? M10/M8 studs. M10 to screw into the head after a thread repair and then return to M8 for the nuts that pull the manifolds up to the gasket. Or is it something that I will have to make?

    Regards'

    Frans.
    Something like this ?

    ONLINE SALES Engine & Kart Part Catalogue

    Also available of ebay but at greater cost.

  3. #3
    1000+ Posts Frans's Avatar
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    Thanks Robmac, spot on. I will place my order with them.

    Regards
    Frans.
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  4. #4
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    HI Frans,

    The studs you want are also used on the 1800-2000 cc aircooled VW motors for the exhaust. Probably some around over there.
    Cheers Jaahn

  5. #5
    Too many posts! JohnW's Avatar
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    Quote Originally Posted by Frans View Post
    Thanks Robmac, spot on. I will place my order with them.

    Regards
    Frans.
    Spot on indeed. Thanks again Robmac! I'd never seen that site.
    JohnW

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  6. #6
    1000+ Posts geckoeng's Avatar
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    Hi Frans,
    I have been using Heli-coils for years, with great sucess. But there comes a time when the base material is so damaged that it will not take a Heli-coil. When I was overseas I was shown another helper, known as a Keysert. They were fantastic for fixing damaged threads in Aluminium, and were very durable.

    Thread Repair , Helical Inserts, Keyserts, Keenserts | Keysert Range Kits | Buy Rivets | Rivet tools - Rivet Nuts & Other Specialty Fasteners

    I realise the stepped stud is a good fix, but I believe a repaired and restored thread is better.

    Ray
    Ray geckoeng

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  7. #7
    1000+ Posts Frans's Avatar
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    Hi ray,

    I have been using a similar insert but the one that cuts its own threads. I am building another motor (the dry sump one) and the head I have sourced has been abused liked almost all heads nowadays. The extractor side studs looks like craters and the smallest thread that I could cut is M14. An insert of M14 gives you stud size of M10. That is why I need the reducing studs.

    I hope you're keeping well and I just had Harry over here for a visit.

    Regards.

    Frans
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  8. #8
    COL
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    Frans

    Have you thought about drilling the damage holes and then either mig or tig up the holes and then machine flat and then redrill back to standard size.
    Regards Col

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  9. #9
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    Default A good supplier of inserts of interesting types !!

    Hi
    Here is a local supplier, to me in Newcastle, who I have used in previous times. Crosstools; Home

    Various types of thread inserts for all occasions, taps of all types, lefthand drills, TC bits, etc etc. They also supplied cheap parts boxes and other usefull stuff, before the internet made it easier. I see now they have diversified a bit.

    They also had a newsletter with heaps of good information and tips on new stuff and amusing wall charts of odd engineering impossibilities that was always good to get a laugh. I have some put away somewhere ?? I might look at their current newsletters to see if they still have a laugh on them.
    Cheers jaahn
    Last edited by jaahn; 12th November 2014 at 11:00 AM.

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