thescrapman Posted December 18, 2020 Report Share Posted December 18, 2020 I have a big pile of cam and crank sprockets, the simplex ones are significantly more worn than the duplex ones. i have also stripped off some very floppy and stretched simplex chains. look very closely at the teeth on the sprockets in your engine, check them against what a new one looks like. Link to comment Share on other sites More sharing options...
AidanT Posted December 18, 2020 Author Report Share Posted December 18, 2020 46 minutes ago, thescrapman said: I have a big pile of cam and crank sprockets, the simplex ones are significantly more worn than the duplex ones. i have also stripped off some very floppy and stretched simplex chains. look very closely at the teeth on the sprockets in your engine, check them against what a new one looks like. Can you add some pics? Would be interesting to see Link to comment Share on other sites More sharing options...
Pete Lewis Posted December 18, 2020 Report Share Posted December 18, 2020 worn teeth have a hooked profile the chains dont actually 'stretch' but as the pivots and links wear it does become longer this makes the cam timing l later as this wear take place one good reason to fit a new good chain Link to comment Share on other sites More sharing options...
rogerguzzi Posted December 19, 2020 Report Share Posted December 19, 2020 17 hours ago, Pete Lewis said: this makes the cam timing l later as this wear take place Hello All When I time a camshaft I always try and get 1 to 2 degrees advanced to allow for the chain to wear and get a bit longer. Roger Link to comment Share on other sites More sharing options...
Colin Lindsay Posted December 19, 2020 Report Share Posted December 19, 2020 18 hours ago, Pete Lewis said: worn teeth have a hooked profile Many thanks to Andy / Cookie for having this excellent illustration on his blog: Link to comment Share on other sites More sharing options...
AidanT Posted December 19, 2020 Author Report Share Posted December 19, 2020 Thanks I will see what I've got tomorrow Aidan Link to comment Share on other sites More sharing options...
thescrapman Posted December 19, 2020 Report Share Posted December 19, 2020 Link to comment Share on other sites More sharing options...
johny Posted December 19, 2020 Report Share Posted December 19, 2020 I would do the chain test and decide on that basis whether to replace it. Then of course its well known (certainly in bicycle/motorcycle circles) that its not worth replacing the chain without doing everything as a new chain will wear very rapidly to suit worn sprockets.... Link to comment Share on other sites More sharing options...
AidanT Posted December 20, 2020 Author Report Share Posted December 20, 2020 Advice please on locking the crank so I can get the front bolt out? Pic would be useful. ( note back plate and flywheel already removed) Aidan Link to comment Share on other sites More sharing options...
Colin Lindsay Posted December 20, 2020 Report Share Posted December 20, 2020 I suppose you can't put the car in gear? 1 Link to comment Share on other sites More sharing options...
johny Posted December 20, 2020 Report Share Posted December 20, 2020 Take the sump off and lock the crank with a suitable lump of wood? Link to comment Share on other sites More sharing options...
NonMember Posted December 20, 2020 Report Share Posted December 20, 2020 1 hour ago, AidanT said: note back plate and flywheel already removed Ah, well, that was your first mistake. As Johny says, without the flywheel to lock it with, your best bet is sump off and wedge a bit of wood between the counterweight and the block. Easiest with the engine upside-down so the wood won't fall out. Link to comment Share on other sites More sharing options...
NonMember Posted December 20, 2020 Report Share Posted December 20, 2020 As an alternative suggestion, a strip of 20mm by 3mm steel bar about 20cm long with three holes drilled in the right places, then bolt it to the bottom two flywheel fixing holes in the crank and one of the right hand backplate fixings. You'll need a kink in the bar to line up the offset, and tighten the bolts reasonably tight. The orientation means the bar is under tension when undoing the front pulley bolt/nut. Link to comment Share on other sites More sharing options...
Roger K Posted December 20, 2020 Report Share Posted December 20, 2020 I always used to use the block of wood. Pick a beefy looking part of the block to wedge it in, and use the longest extension bar you can - or you could even risk a bit of scaffolding pole over the end of a big one, but take care - bursting sockets are not unknown. An air impact driver is the best option but I'm going to guess you don't have one. If you do, be doubly certain that you are using it with an impact socket. A burst socket on one of these does much more damage. Link to comment Share on other sites More sharing options...
Pete Lewis Posted December 20, 2020 Report Share Posted December 20, 2020 Ha !! put a 1/2 drive battery impact wrench on your christmas wish list mine does upto 330 lbft when charged and the front bolt is not super tight Link to comment Share on other sites More sharing options...
PeteH Posted December 20, 2020 Report Share Posted December 20, 2020 Yerseee!. So some guy put the R-V wheel nuts on with an Air Impact wrench. Took me, (12st + 1" socket set) extension bar and 6+ feet of scafold pole, to move them!, And the L-H ones are/where L handed!. Pete Link to comment Share on other sites More sharing options...
Andyone Posted December 20, 2020 Report Share Posted December 20, 2020 3 hours ago, Pete Lewis said: Ha !! put a 1/2 drive battery impact wrench on your christmas wish list mine does upto 330 lbft when charged and the front bolt is not super tight +1 had mine off in a jiffy Link to comment Share on other sites More sharing options...
AidanT Posted December 21, 2020 Author Report Share Posted December 21, 2020 16 hours ago, Colin Lindsay said: I suppose you can't put the car in gear? Yes I can put my car in to gear no problem! Not sure that's going to help though 🤔 Aidan https://images.app.goo.gl/NnEssbBKvPpFUokM6 Link to comment Share on other sites More sharing options...
Colin Lindsay Posted December 21, 2020 Report Share Posted December 21, 2020 18 hours ago, Pete Lewis said: Ha !! put a 1/2 drive battery impact wrench on your christmas wish list mine does upto 330 lbft when charged and the front bolt is not super tight The problem there is when the nut remains stubbornly stuck, the wrench rotates and your arms end up looking like corkscrews. (Ok it was an electric drill that suddenly jammed but the experience was the same) Link to comment Share on other sites More sharing options...
Pete Lewis Posted December 21, 2020 Report Share Posted December 21, 2020 there should not be any real reaction to the gun the impact is via the drive not the hand a drill yes thats a wind up waiting to happen the 6pot nut its only 90/100 lbft not that of a gorilla job Link to comment Share on other sites More sharing options...
Nigel Clark Posted December 21, 2020 Report Share Posted December 21, 2020 5 hours ago, Colin Lindsay said: The problem there is when the nut remains stubbornly stuck, the wrench rotates and your arms end up looking like corkscrews. (Ok it was an electric drill that suddenly jammed but the experience was the same) In my experience, the combination of impact wrench and seized fastener is usually a broken fastener! Nigel Link to comment Share on other sites More sharing options...
AidanT Posted December 21, 2020 Author Report Share Posted December 21, 2020 So OIL PUMP Firstly, there's no mesh or filter inside the uptake tube. Is it necessary?? Second see the pic... does this look right with the edges taken off on the outer? The gap seems fine @ .0035 between the inner and outer Let me know 😀 Link to comment Share on other sites More sharing options...
Pete Lewis Posted December 21, 2020 Report Share Posted December 21, 2020 think i mentioned much earlier i have never seen that design of pump pick up as you engine has its from else where or some modification but the rectangular pick up is to me very unusual maybe some has a clue about it Pete Link to comment Share on other sites More sharing options...
NonMember Posted December 21, 2020 Report Share Posted December 21, 2020 14 minutes ago, Pete Lewis said: think i mentioned much earlier i have never seen that design of pump pick up as you engine has its from else where or some modification but the rectangular pick up is to me very unusual I thought the same when I first saw it but have since noticed that the Mk3 GT6 parts catalogue shows one like it, marked "up to KE775E and KF2527E" Link to comment Share on other sites More sharing options...
Iain T Posted December 21, 2020 Report Share Posted December 21, 2020 Have you measured the rotor to body end gap? This is most important. The instructions on Sparky-Spit post shows how to measure. Link to comment Share on other sites More sharing options...
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