Mi16 copper head gaskets
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  1. #1
    Fellow Frogger!
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    Default Mi16 copper head gaskets

    Howdy,
    I've been looking at cheap ways to boost the compression up in my series one mi16 and it looks like a copper head gasket is the way. Has anyone else done it? Is it that dangerous? Power outputs?

    Thanks in advance,
    Lewis


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  2. #2
    Fellow Frogger! DjB8V's Avatar
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    Google search Taylor Enginnering.

    On Peters website he goes through the different methods of uping your c/r. All your answers will be there.


    Chris

  3. #3
    1000+ Posts PeterT's Avatar
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    It's a great idea providing you take it off every 3 years.

    '92 205 Mi16
    '90 Mi16x4

  4. #4
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    Kermit has had a copper head gasket for some 5 years with no problems. If you need to have the head off ensure you apply a heat source to the gasket to enneal it by applying heat.

  5. #5
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    Make sure you get the head o ringed or it will not seal....
    Adrian Wuillemin

  6. #6
    1000+ Posts pgti6's Avatar
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    Who can you recommend to 'O' ring the head Adrian? I had coolant leaks previously only solved with liberal amounts of 3Bond & a liner protrusion of 0.004".
    405 Mi16 2.2 litre race car up for sale soon. For details contact me on 0438 106 430.

    Lap times- Sandown 1 27.9
    Phillip Island 1 53.8

    Previous Frenchies-
    1988 205 Gti
    1998 306 GTi6
    1997 306 N5 sedan
    1996 306 N3 XT hatch
    1976 Renault R16TS manual in Avocado
    1976 Renault R16TS manual in Trak Yellow
    1975 Renault 5 Guernsey, Channel Islands
    1972 Renault 4 Guernsey, Channel Islands

  7. #7
    1000+ Posts PeterT's Avatar
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    I've had great success on XU9 engines without o-ringing but others haven't. I think if liner protrusion is too high or too low you'll have problems - 0.004" is certainly on the upper end of the scale. It works well on liner engines because the liner bites hard into the copper. You definitely need to o-ring on XU10 engines. I'd check liner protrusion before doing it. Otherwise, contact Ridgecrest and ask for a 405 gasket in what ever thickness you want - 0.5, 0.7 or 1.0mm.

    '92 205 Mi16
    '90 Mi16x4

  8. #8
    1000+ Posts PeterT's Avatar
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    Quote Originally Posted by Colin Rose View Post
    . If you need to have the head off ensure you apply a heat source to the gasket to enneal it by applying heat.
    I would argue that on a liner engine it's a once only application, especially if you move the liners. For the sake of ~$100 when rebuilding an engine it's small change.

    RAMS Head Service at Windsor do the o-ringing.

    I haven't tried the thinner Cometic gasket yet but this might be safer for you:

    http://forum.205gtidrivers.com/index...owtopic=128397

    '92 205 Mi16
    '90 Mi16x4

  9. #9
    1000+ Posts pgti6's Avatar
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    Perhaps my lack of success was down to 2 issues-

    1. The copper gasket even though re-annealed was it's second use, &

    2. I used the 25, 50, 75 ft lbs method of torquing the head down.
    405 Mi16 2.2 litre race car up for sale soon. For details contact me on 0438 106 430.

    Lap times- Sandown 1 27.9
    Phillip Island 1 53.8

    Previous Frenchies-
    1988 205 Gti
    1998 306 GTi6
    1997 306 N5 sedan
    1996 306 N3 XT hatch
    1976 Renault R16TS manual in Avocado
    1976 Renault R16TS manual in Trak Yellow
    1975 Renault 5 Guernsey, Channel Islands
    1972 Renault 4 Guernsey, Channel Islands

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