R16 Mod to Postively Locate Camshaft
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  1. #1
    Tadpole Al_R8's Avatar
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    Default R16 Mod to Postively Locate Camshaft

    Hi folks,

    First, a little bit of background for those who don't remember me from before all the early posts were deleted from the servers. I've got a Mexican A110 I've built up to more or less 1973 Group 4 factory spec - it's a gravel rally car and it's caused me no end of heartache. In April 2010 it ingested a huge amount of dust, and at the same time broke all the inlet manifolds. At about that point I ran out of money and motivation.

    But with encouragement from my RCCQ mates, things are moving again, and today I dropped the head and related parts off to Liddle's here in Brisbane. Peter Liddle told me of a mod he'd seen in about 1968 on a Formula 2 car whereby there was a sort of aluminium cradle fitted in the head to hold the camshaft in place.

    I wonder if anyone is familiar with this mod, and what the thinking is on how necessary it might be. Perhaps the need for it comes from very high-lift and aggressive camshaft profiles.

    Regards,

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    Al Kelly
    Coming soon to a forest near you - Alpine A110 1600S Group 4.

  2. #2
    1000+ Posts Frans's Avatar
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    Al,

    I see that there is no reaction to your question. Neither do I know what it is. I assume that it is a 16TS 807 motor because they are the only ones with cam issues when the valve train is upgraded. If so there is a thread that I started to tell you how I sorted a problem that we experienced on the Targa in NZ. IMHO it was very successful because at one stage we did two Targas without refreshing the motor. That equals about 1500km racing and 4500km cruising inbetween.

    http://www.aussiefrogs.com/forum/sho...petition-motor

    Maybe that will be of a help if you follow that procedure but it has nothing to do with a cradle fitted on the cam.

    Regards

    Frans
    Old enough to know better
    Young enough to do it anyway.

  3. #3
    Tadpole Al_R8's Avatar
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    Thanks Frans. I've had a look at your article. Anything that will make the motor more reliable...

    I think the "cradle" mod, or whatever it was, may have been a one-off. Peter said he saw it on an F2 car at Globe Engineering in Adelaide in about 1968, and thought the driver may have been Colin Bond. Globe, best known perhaps for mag wheels, apparently did a lot of stuff with aluminium, so it would have been well within its scope.

    Regards,

    Al
    Coming soon to a forest near you - Alpine A110 1600S Group 4.

  4. #4
    Simon's Avatar
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    Quote Originally Posted by Al_R8 View Post
    Thanks Frans. I've had a look at your article. Anything that will make the motor more reliable...

    I think the "cradle" mod, or whatever it was, may have been a one-off. Peter said he saw it on an F2 car at Globe Engineering in Adelaide in about 1968, and thought the driver may have been Colin Bond. Globe, best known perhaps for mag wheels, apparently did a lot of stuff with aluminium, so it would have been well within its scope.

    Regards,

    Al
    I'm probably way off with this reply, but some things just are seeming to cross over to me. In 1968 Colin Bond was campaigning the ex-Bob Holden Lynx-Peugeot in hillclimbing (Bond was 1965/66/67 NSW Hillclimb Champion) between other jobs in rallying and Bathurst. This is where things could get fuzzy from my point of view, if you squint slightly, a Peugeot hemi-head motor could be confused with a Renault 16TS hemi-head motor (after all they are both French!). The Peugeot motors sometimes created separate intake ports in the head by filling in the intake ports. My (totally guessing) thoughts, being that your man has mixed the filling of the Peugeot heads to create separate ports with a special device to support the camshaft in a 16TS motor. And also may have mixed Lynx (who dabbled in cast aluminium) with Globe. I'm hoping that I'm totally wrong, and the 16TS mod is a new discovery of a period modification!
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  5. #5
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    Globe used to run a twin cam Escort with some success, way back when, drive by Paul Basset,it had a alfa 5 speed and used to do well against the v8s at the time ,i remember reading a sticker on the dashboard that read LOOK AFTER IT IT PAYS YOUR WAGE ,PUGS The locking device could have been used to lock the cam whilst timeing the engine like on the Cleo twin cam .

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