GTi6 Cambelt Change Question
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Thread: GTi6 Cambelt Change Question

  1. #1
    1000+ Posts pgti6's Avatar
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    Default GTi6 Cambelt Change Question

    Bit of advise needed please.

    I'm doing a cambelt change on my GTi6 atm. Have got to the point where I need to undo the 18mm bolt on each of the cam gears. The only way I can see to hold them is by using the locating pins. There might be a hex cast into the cams themselves like Mi16's have, but didn't really want to disturb the covers.

    I cant find a torque figure for these bolts either or whether they're threadlocked, but suspect it to be around 40Nm (30 ft lbs), so should I swing a spanner on the bolts & hope for the best? The pin engagement into the head is only around 8mm.

    Thanks

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  2. #2
    Fellow Frogger! young 4 old pug's Avatar
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    Default GTi6 Cambelt Change Question

    Why do you want to undo them?
    Current stash
    too many.

    Passed over stash
    lots.

  3. #3
    1000+ Posts pgti6's Avatar
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    I was under the impression that on these engines both cam gears are in 2 pieces so that the belt tension can be equalised between the gears without changing the timing when adjusting the belt.

    I was following this guide on the 306 site-
    http://www.306gti6.com/forum/showthread.php?id=40662
    See post #7
    Last edited by pgti6; 8th December 2012 at 01:52 PM. Reason: more info
    405 Mi16 2.2 litre race car for sale.
    http://www.aussiefrogs.com/forum/car...-car-sale.html
    https://www.my105.com/ListingDetails...d/518/id/22164


    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

  4. #4
    1000+ Posts pgti6's Avatar
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    Default

    My cam gears are similar to these with slightly different webbing-

    405 Mi16 2.2 litre race car for sale.
    http://www.aussiefrogs.com/forum/car...-car-sale.html
    https://www.my105.com/ListingDetails...d/518/id/22164


    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

  5. #5
    1000+ Posts pgti6's Avatar
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    OK, I've managed to answer my own question.

    1. You DO need to undo the 18mm cam bolt to allow the outer part of the gears to rotate &....
    2. You DONT use the locking pins to hold them.

    This is what's needed-



    and as luck goes, I have something similar which will do the job.

    That link above to the guide on the 306 forum is the butchers version for a cambelt change & I'm glad questioned aspects of the 'advise'.
    Last edited by pgti6; 8th December 2012 at 04:40 PM.
    405 Mi16 2.2 litre race car for sale.
    http://www.aussiefrogs.com/forum/car...-car-sale.html
    https://www.my105.com/ListingDetails...d/518/id/22164


    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

  6. #6
    Contented Peugeot Driver addo's Avatar
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    Hi Jeff, I have frequently used the cam wheel holding tool for these "slip and grip" type events. Here's a typical one.

    http://www.tridon.com.au/Products/Pr...&G=557&P=64435

    Afterwards I check twice that timing is right (ie; pins out, 1520 rotation, pin up, unpin, repeat, unpin and complete assembly).

  7. #7
    1000+ Posts pgti6's Avatar
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    Ha, thanks Adam. I was just looking at one of those on Fleabay UK. Nothing showed up on Service Box. Will get one & give it a go.

    Any idea what they're worth? They want 14 quid from the UK. Even if I use it once every 4 years it'd make the job a lot easier.
    405 Mi16 2.2 litre race car for sale.
    http://www.aussiefrogs.com/forum/car...-car-sale.html
    https://www.my105.com/ListingDetails...d/518/id/22164


    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

  8. #8
    Contented Peugeot Driver addo's Avatar
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    You want a sturdy one with the shortest lugs suitable for the job - they still ideally have a slight hook on them to avoid unintended donations of blood and skin. No idea what it's worth (and my mate usually buys from the toolie so he overpays). I'd be surprised if you blew more than $90 on it.

    FWIW ours is bent from abuse! Not actual FT on the bolts, but "bloody tight" with a KC Tools long uncranked ringy similar to this: http://www.austectools.com.au/shoppi...er-set-metric/

    I suppose you noticed the colour coding to the indexing tabs, being different for intake and exhaust on most engine. A real head**** when someone dismantles a car then goes on holiday.

  9. #9
    1000+ Posts pgti6's Avatar
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    I've got a 'Y' shaped tool I used to hold the end plate on my accumulator when I changed fittings, which I'll try to modify first, otherwise another tool for the workshop to add to the collection.
    Thanks.
    405 Mi16 2.2 litre race car for sale.
    http://www.aussiefrogs.com/forum/car...-car-sale.html
    https://www.my105.com/ListingDetails...d/518/id/22164


    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

  10. #10
    1000+ Posts pgti6's Avatar
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    Thought I'd do an update on a successful completion of the cambelt change on my GTi6 with pics of tools used along the way. I won't go into a step-by-step procedure as you can read up on it from the link to the download below.
    _____________________________________________

    Download the 'XU10J4RS Technical Info' from here-http://www.306gti6.com/downloads/ & familiarise yourself with it beforehand.
    _____________________________________________

    There was no need to remove the top engine mount & lower it down as all could be done with the engine in situ.

    Firstly, thanks to Addo for the tip on a cam gear holding tool. Without that you'd never be able to slacken the 18mm bolts holding the gears to the cams.

    ****Don't fall for the 'advice' on the 306 FAQ of fitting the pins and attempt to undo the cam bolts.

    I made my pins from 2 x 6mm cap head screws & cut off the threads which were a perfect fit through the gears into their correct castings in the head. For the crank pulley, I had an 8mm pin my Dad machined up for me years ago which was a Datsun 1600 clutch slave cylinder rod, but you can also use a suitable 8mm bolt pictured.

    Conveniently, there is access to holding the flywheel at the back of the block where you can slip in a screwdriver blade to undo/do up the 22mm crank pulley bolt.

    I also ground 2 allen keys to 8mm square 45 degrees apart to fit into the tensioner square hole. Addo, couldn't find a 13mm flat extra long spanner to adjust the tensioner from above & with the allen key inserted there wasn't enough room to get on a ring spanner, hence the 13mm open ended one was used.

    The long extension was used to wind the engine over 1540 degrees through the wheel arch. I'd replaced the crank pulley last belt change, but decided to mark it this time as a visual check for any slippage of the outer.

    ***If you suspect yours has slipped the easiest way to check is that the woodruff key on the crank should be facing the rear of the engine at 9 o'clock-parallel to the bottom of the block.

    Threadlock on the crank pulley bolt torqued to 110Nm when you're satisfied everything lines up again & all the pins fit easily into their slots. That leaves the p/steering pump cover (not all engines have these), the inner wheel arch cover & undertray to fit.

    All up, a relatively easy job as long as you're patient.





    choonsta likes this.
    405 Mi16 2.2 litre race car for sale.
    http://www.aussiefrogs.com/forum/car...-car-sale.html
    https://www.my105.com/ListingDetails...d/518/id/22164


    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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