Tim D. Posted October 19, 2014 Report Share Posted October 19, 2014 Hi chaps As you may have worked out I am servicing my engine while the body is off the car. As part of this I am redoing the core plugs. Particularly those at the rear of the engine that are tricky to get to normally. Anyway got carried away and started trying to remove the one that blanks the back of the camshaft. Didn't get far before I realised that it probably wasn't a good idea. Anyhow. The plug did move in by about 1mm until it stopped. The plug is still seated square and not damaged. Is it an issue that it moved in? Cheers Tim Quote Link to post Share on other sites
BlueTR3A-5EKT Posted October 19, 2014 Report Share Posted October 19, 2014 Risk is you may have driven it in so it is touching the back of the cam - not good engineering practice. Quote Link to post Share on other sites
Tim D. Posted October 19, 2014 Author Report Share Posted October 19, 2014 Thats what I thought. Hmmmm bu$#er. Tim Quote Link to post Share on other sites
RogerH Posted October 19, 2014 Report Share Posted October 19, 2014 Hi Tim, rewplacing your core plug should be straight forward with the engine out. On Thursday I start work on a friends 4A to replace/ diagnose the cam core plug - GB out etc. Bu99er. Roger Quote Link to post Share on other sites
TriumphV8 Posted October 20, 2014 Report Share Posted October 20, 2014 Hi Tim, as the the cam plug is not affected by water from the rear I would leave him where it is until I want to fit cam bearings and need the opening for drilling the block. As the **** had happened I would press the plug out now from inside to outside what best could be done with an old cam. No good idea to fiddle on the plug with cam still in place although one could try to weld a ring to the plug and use a puller from coachwork but thats not recommended. From two reasons it is not good to leave it as it is: The plug might touch the cam and it might let the oil behind pass. Quote Link to post Share on other sites
Tim D. Posted October 20, 2014 Author Report Share Posted October 20, 2014 Hmmmm. The plug moved in by less than 1 mm. If it is touching the end of the cam i guess that if it did wear the plug at most it would only be to the level dictated by the endfloat on the cam? Tim Quote Link to post Share on other sites
RogerH Posted October 20, 2014 Report Share Posted October 20, 2014 Hi Tim, not sure how the TR6 oil system works but on the 4A the rear bearing of the cam allows oil to pass up to the rocker shaft etc. The core plug acts as an oil seal apart form other things. If it has moved then the seal has been broken and will leak if similar to the 4A. Roger Quote Link to post Share on other sites
TriumphV8 Posted October 20, 2014 Report Share Posted October 20, 2014 Yes Roger, that is the point. From the distance difficult to judge and if back in the car not possible to repair. So to be on the safe side I would replace the plug but anyway there is not the full pressure on the cams back, otherwise it would pop out of the engine. There is a pressure release bore but there is a lot of oil and all should be tight. So its like chess: If you grab it you have to move it...... Quote Link to post Share on other sites
Tony Millward Posted October 20, 2014 Report Share Posted October 20, 2014 So its like chess: If you grab it you have to move it...... :lol: that sums up Triumph ownership.. Andreas, put your name on the bottom of your posts cause people don't know what to call you. Cheers Tony Quote Link to post Share on other sites
TriumphV8 Posted October 20, 2014 Report Share Posted October 20, 2014 Will do so Tony! Early up to catch your birthday presents? Maybe another nice Triumph? All the best to you from here again! Cheers Andreas Quote Link to post Share on other sites
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