culp Posted December 4, 2011 Share Posted December 4, 2011 I have a MK3 GT6 1971. I tried adjusting the ignition timing at idle yesterday, and I noticed the timing was wandering. I was setting it to 7 degrees BTDC but it wa wandering by a couple of degrees. Worn distributor? It has a Lucas distributor which is not right for. A GT6 it should be a deco remy I think. Link to comment Share on other sites More sharing options...
tiggrr1 Posted December 4, 2011 Share Posted December 4, 2011 You will always get a few degrees of wander/movement in a distributer system,the more worn any parts are the worse it will get.First thing I would check would be the distributer main shaft for any excess play.there is no way you will stop it moving a couple of degrees here and there.Unless you fit a MegaJolt system (but that is another story all together) ;) Link to comment Share on other sites More sharing options...
tiggrr1 Posted December 4, 2011 Share Posted December 4, 2011 Oh yeahYour correct in thinking the original would almost certainly be a Delco, possibly a d206 I can't remember the number.I'm sure someone more knowledgable will be along soon. Link to comment Share on other sites More sharing options...
TimW Posted December 4, 2011 Share Posted December 4, 2011 yep D206 delco as standard but the lucas is much better Link to comment Share on other sites More sharing options...
rotoflex Posted December 4, 2011 Share Posted December 4, 2011 Are the marks on the front pulley (harmonic damper) your reference for the timing wandering?It is known that the rubber inside the damper deteriorates, letting the inner part move independently of the outer part, & throwing timing marks out of their correct position. Link to comment Share on other sites More sharing options...
GT6 M Posted December 4, 2011 Share Posted December 4, 2011 worn dissy base plate, loose fitting points base, or worn timing chain.is there any side ways play int dizzy shaft, non,then rule oot that.wabble the base plate about,and see if there is alott of movement in the points, are all the screws that hold the base plate in, aftually thea, and if they are,are they tight,.M Link to comment Share on other sites More sharing options...
Pete Lewis Posted December 5, 2011 Share Posted December 5, 2011 also make sure the end of the spring from the vac unit is a neat fit over the post on the moving plate Pete Link to comment Share on other sites More sharing options...
don cook1 Posted December 6, 2011 Share Posted December 6, 2011 I made a pig's ear out of fitting a Lucas to my GT6, I retained the Delco locking plate, which didn't do the job, mega ignition wander. Not fixed until I fitted the proper locking plate. Link to comment Share on other sites More sharing options...
rotoflex Posted December 6, 2011 Share Posted December 6, 2011 Don, don't feel badly about that.My GT6 has had a Lucas distributor since we met in 1975. Two years ago I just couldn't get the clamp to hold, & a friend identified it as a Delco clamp. New (to me & the car) Lucas clamp, & all was better. Link to comment Share on other sites More sharing options...
don cook1 Posted December 6, 2011 Share Posted December 6, 2011 Ha-Ha, so I'm not the only one! Link to comment Share on other sites More sharing options...
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