Securing timimng chain sprockets when removing the head

kgb123 · Post by **kgb123** » Sun Oct 21, 2012 9:10 am

Hi,
Im taking the head of my engine and have got to the point of seperating the cam shafts from the timing chanin sprockets. My manual(s) suggest fittting a thin 7/16 nut to the threaded centre pin on the sprocket, but mine aren't threaded! See Photos.
Looks like the pin might take a circlip or something like that, but will it work? I obviously don't want to mess with the timimg!!! Anyone seen/addressed this before?
Re the chain tension adjuster. Manual says release center bolt (mine is a nut) depress the plunger and rotate clockwise. This seems to increase the tension and there is not much adjustment movement. Going anticlockwise there is more movement and seemingly less tension in the upper chains??
Any advice greatly welcomed.
Thanks
PS..Cannot workout how to upload images!! please advise and I will post seperately in this thread![/img]

Post by **Heuer** » Sun Oct 21, 2012 10:18 am

To post pictures on the Forum please follow this guide: http://etypeuk.com/forum/viewtopic.php?t=1666

kgb123 · Post by **kgb123** » Sun Oct 21, 2012 10:50 am

Thanks for the assistance on the photo's
Regards
Kevin

265bhp · Post by **265bhp** » Sun Oct 21, 2012 11:16 am

Hi

In this months etype club magazine the use of an R type clip is shown by long term owner and restorer Chris Rooke

Regards
Jonathan

Post by **1954Etype** » Sun Oct 21, 2012 11:34 am

I definitely would not use an 'R' clip - chances of them falling into the front of the engine are high. Use a rubber band to join them or string.

PeterCrespin · Post by **PeterCrespin** » Sun Oct 21, 2012 12:35 pm

As Angus says, don't use an R clip, or E clip or any clip - there is no need to use anything as the sprockets aren't going anywhere. That's why the pins are plain. The head will come off over them as they move towards each other and then you can leave them hanging or better loop them with a rubber band or bit of wire. Seems crazy to risk a heap of trouble dropping something into the engine when there is simply no need?

As for the tensioner, it is an off-centre cam type and works in either direction depending how it was last fitted. Seemingly it was tightened the opposite way to the factory direction but it doesn't matter - just turn it whichever way gives you the slack. And don't panic about losing the cam timing - it's easy to set and you should check it regardless on reassembly.

Pete

kgb123 · Post by **kgb123** » Sun Oct 21, 2012 1:08 pm

Thanks to each for your input, will proceed with the twine or rubber band option I think.
Cheers
Kevin

Dave K · Post by **Dave K** » Sun Oct 21, 2012 1:56 pm

1954Etype wrote: I definitely would not use an 'R' clip - chances of them falling into the front of the engine are high. Use a rubber band to join them or string.

In the practical classics mag the one that shows the green 4.2 being restored by Colin Ford he recommends using an elastic band so that's what I did and it worked OK.

Dave

ChrisC · Post by **ChrisC** » Sun Oct 21, 2012 2:53 pm

Yup - elastic band every time - works a treat

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Securing timimng chain sprockets when removing the head

#1 Securing timimng chain sprockets when removing the head

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