Cam grinders for billet cam ????
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  1. #1
    Fellow Frogger! MYT205's Avatar
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    Cam grinders for billet cam ????

    I seem to remember a discussion on this once before but a search produced nothing relevant.

    Does anyone know of any cam grinders who can do billet cams for Peugeots. ie has blanks that a Peugeot cam can be ground from.

    My mechanic's cam grinder doesn't have any blanks suitable for grinding a billet 205 cam so we need to find someone else to grind a cam for us.

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    Thanks guys.

    Darren

    <small>[ 01 May 2003, 10:48 AM: Message edited by: YEL020 ]</small>

  2. #2
    Gone Fishin' Ray Bell's Avatar
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    I'm sure virtually any machinist can turn up a bare cam on a lathe ready for grinding... but it would most likely be steel instead of cast iron. I don't know if that matters...

  3. #3
    1000+ Posts alan moore's Avatar
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    Ivan Tighe Engineering in Brisbane speciallise in cam grinding. My 205 cam was made from a billet of a particular steel(solid rod) and hardened. The cam is a bit easier to make than most as it has no gear drive on it. You can mention me as Dean knows me well.
    Alan
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  4. #4
    Fellow Frogger! MYT205's Avatar
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    Alan.

    How much did this cost you?

    Darren

  5. #5
    1000+ Posts PeterT's Avatar
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    As said, the 205 cam has a very simple layout. I would have thought that any decent machinist could turn up a blank from some medium carbon billet steel (S1030,S1040 or even 3140), then pass it on to a cam grinder. They can't be too keen for business.

    '92 205 Mi16
    '90 Mi16x4

  6. #6
    Gone Fishin' Ray Bell's Avatar
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    I think you'll find that roughing out the lobes is best done on an old machine that can be treated a bit harshly...

    Get the lobes somewhere near the mark and they throw it on a good machine with close tolerances.

  7. #7
    1000+ Posts alan moore's Avatar
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    I talked Ivan Tighe Eng. The material they would use is $200 plus precision grinding of the bearing journals and cam lobes. The cam is then sent off to be hardened and then has to be straightened and then ground the final couple of thou to the final sizes. So the cam and journals get ground twice as the sizes grow about a thou and the surface becomes rough after hardening. About $700 total without seeing the job. Peter is right that the cam is mainly roughed out on a lathe, and could be done by a competent friend. Don't know what saving. Maybe a blank casting or two from England might be cheaper. There is a bit in metallurgy and as usual you get what you pay for, but they would cast hundreds there, like we cast 202s here.
    '56 Renault 4CV (16TS Power)
    '62 Renault Dauphine Gordini
    '82 Renault Fuego GTX
    '89 Renault Alpine GTA V6 Turbo
    '02 and '03 Renault Clios 1.4L
    '13 Renault Megane RS265 Trophee+

  8. #8
    1000+ Posts PeterT's Avatar
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    The dollar is getting stronger. It might be more feasable to buy one from the UK. You'd have to assume they've done all the homework and know the product a lot better than the local grinders.

    '92 205 Mi16
    '90 Mi16x4

  9. #9
    Gone Fishin' Ray Bell's Avatar
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    I wouldn't be so sure about that...

    Tighe's have been grinding cams for a very long time.

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