James Posted May 7, 2009 Share Posted May 7, 2009 I have a ton of timing scatter even though I have a 123 ignition - which means that I have a dodgy timing chain? Does this make it worth changing even though I am going to Megajolt? Does that mean the cam is fluttering about just as much?Currently I have the radiator out and the pulley nut off - so I am thinking it can't be too much more work to get to the timing chain... question is; is it worth the effort? Will it be a complete pain in the arse whilst in the car? Link to comment Share on other sites More sharing options...
AlanChatterton Posted May 7, 2009 Share Posted May 7, 2009 If the pulley is off and the rad is out, I would do it.Undo all the bolts and screws holding the timing cover on, and it will take 5 minutes to replace!From experience,Make sure you replace the bolts and lock tabs with new ones........... I have seen original ones reused that sheared!Whilst you are there, replace the timing cover front seal.... rubber push in lip seal.I would also recommend, that unless the timing tensioner is totally mullered, you reuse the original. The replacement part is of inferior quality, and reusing the old one was recommended to me by Chris Witor when I changed the cam in mine.However, I can't imagine that even a worn chain would cause timing scatter.................. unless its REALLY bad! Link to comment Share on other sites More sharing options...
James Posted May 7, 2009 Author Share Posted May 7, 2009 Well this is what I am wondering Alan - what is causing the scatter if I have a 123. It was doing it with the dizzy before too.I haven't got the pulley off yet - it refuses to move... Link to comment Share on other sites More sharing options...
mark spit Posted May 7, 2009 Share Posted May 7, 2009 The scatter could be from a stretched sloppy chain, wear in the crank and cam sprockets, wear in the cam to dizzy/oil pump drive as well.If the chain wear isn't bad you could leave it, megajolt does away with the mechanical drive path and triggers of the crank pulley. As long as that doesn't wobble - goodbye scatter and compromise ignition curve.Mark Link to comment Share on other sites More sharing options...
DJB_Harvey Posted May 7, 2009 Share Posted May 7, 2009 Always better to re-new the chain..especially on single row versions,a worn chain gives timing scatter and often causes the engine to run on..on severe cases it can easily wear through the cover as well ! but do check the distributor drive gear as well as stated- often the pin is loose especially on PI versions.Also check the condition of the gears ,the crank one is often worn and needs replacing. Link to comment Share on other sites More sharing options...
James Posted May 7, 2009 Author Share Posted May 7, 2009 So the consensus is to replace chain and chain wheels.Being a lazy sod - do I need to remove the water pump or anything else?Just got to decide if it's worth the extra effort or not... I guess it won't be too bad... hope I don't screw up the timing etc Link to comment Share on other sites More sharing options...
DJB_Harvey Posted May 7, 2009 Share Posted May 7, 2009 SOMETIMES you can get away without removing the water-pump housing ..but its easier if its out the way ...if you dont move anything when the chain is removed you cant mess the timing up...also my tip is if theres no leaks from the front DONT change the oil seal without putting a new collar on...if everythings dry just re-assemble in the same order. To hold the timing chain tensioner back ty-rap it back to one of the holes in the cover ,then when the covers nearly fully home cut it and remove ...saves a lot of fiddling about. Link to comment Share on other sites More sharing options...
Lord Sorbington Posted May 7, 2009 Share Posted May 7, 2009 Resto can do it ergo it must be quite easy. Link to comment Share on other sites More sharing options...
owen1183 Posted May 7, 2009 Share Posted May 7, 2009 sorbs wrote:Resto can do it ergo it must be quite easy. lol!! Faith in Resto I see! is his BMW still sounding rough as ever?!? Link to comment Share on other sites More sharing options...
Deleted User Posted May 7, 2009 Share Posted May 7, 2009 sorbs wrote:Resto can do it ergo it must be quite easy. And he probably did from inside the engine by inserting a couple of bent coat hangers through the sump plug :P Link to comment Share on other sites More sharing options...
Lord Sorbington Posted May 7, 2009 Share Posted May 7, 2009 357 wrote:lol!! Faith in Resto I see! is his BMW still sounding rough as ever?!?I adjusted those valve clearances, but had to set them using a sponge on a stick. It wasn't easy. Following the quill shaft / big hammer incident, the sponge on a stick is the only tool I'm allowed to use when I'm anywhere near his cars. Link to comment Share on other sites More sharing options...
Greeks Posted May 8, 2009 Share Posted May 8, 2009 Very dissapointed in this thread, I thought it was all about playing whist in a grey saloon... :P Link to comment Share on other sites More sharing options...
James Posted May 8, 2009 Author Share Posted May 8, 2009 There are no leaks - so it should be good to go.Mmmmm decisions, decisions... Link to comment Share on other sites More sharing options...
thescrapman Posted May 8, 2009 Share Posted May 8, 2009 Is it not the ideal time to convert to a duplex chain??No more stretching issues.......:-)Colin Link to comment Share on other sites More sharing options...
Craig Gingell Posted May 8, 2009 Share Posted May 8, 2009 Greeks wrote:Very dissapointed in this thread, I thought it was all about playing whist in a grey saloon... :Pyou mean a whist drive? Link to comment Share on other sites More sharing options...
James Posted May 8, 2009 Author Share Posted May 8, 2009 thescrapman wrote:Is it not the ideal time to convert to a duplex chain??No more stretching issues.......:-)ColinIf it's reasonable cost then yes - but I'd imagine the engine will go bang before that ever happens...Lucky the cam is too long to come out or else this would turn in to a big project... Link to comment Share on other sites More sharing options...
Tim Bancroft Posted May 8, 2009 Share Posted May 8, 2009 Just keep the car on the road and get the Spittie done, full marks Jemes for using the mk1 as your daily car. Link to comment Share on other sites More sharing options...
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