Trigga Posted November 3, 2008 Share Posted November 3, 2008 does anyone have any experience in changing a cambelt on a 1600 '81 ex? i cut mine when i was taking the engine out for some stupid reason, now ive put the engine back in but need to change the cambelt any help would be sweet cheers Quote Link to comment Share on other sites More sharing options...
fuel Posted November 3, 2008 Share Posted November 3, 2008 mate it's a piece of piss. There are alignment notches on the crank and cam pulleys, and oil pump drive. If yours has balance shafts there will be alignment marks on them too. Just align everything up to TDC and whip the belt on and over the tensioner, then push on the tensioner a little to tighten up the belt and tighten up the tensioner bolt. If yours has balance shafts, the shaft driven off the oil pump is at a 2:1 ratio, you'll need to take the bung off the inlet side of the block and put a 8mm philips screwdriver in to make sure the balance shaft is the right way when you align up the oil pump drive, otherwise the balance shaft will be 180deg out and will cause vibration issues. This page is for cambelt replacement on a FWD 4G63 DOHC, ignore mostly everything except for the bit about the balance shaft (ie the bung in the block, alignment etc) if yours has balance shafts - http://www.vfaq.com/mods/timingbelt-1G.html Here is an online manual for the 4G63 and 4G64 engines, both SOHC and DOHC, the section about the 4G63 and 4G64 SOHC 8V will be almost identical to your 4G32 - http://www.scribd.com/doc/4570538/Mitsu ... G64-Engine Quote Link to comment Share on other sites More sharing options...
Trigga Posted November 4, 2008 Author Share Posted November 4, 2008 cheers mate gonna give it a go sometime this week when i get the parts Quote Link to comment Share on other sites More sharing options...
rwdlancer Posted November 4, 2008 Share Posted November 4, 2008 im having the sam sort of problem with my 4g32. lost the timing when i took the cylinder head off. except i have no timing belt cover wich makes things real hard. plus i think my crank pulley has been put on the wrong way round.anyone got a spare timing belt cover? Quote Link to comment Share on other sites More sharing options...
fuel Posted November 5, 2008 Share Posted November 5, 2008 you don't need a timing belt cover to fit a new cambelt, the notches are cut into the pulley and there are raised markers on the oil pump housing for the crank timing, and for the cam timing there is a notch in the cam gear which lines up with a notch at the top of the steel sandwhich plate behind the cam gear. The timing marks on the plastic cover are for spark timing if you're using a timing light. Also I'm pretty sure you can't put the crank pulley on the wrong way around as there's a keyway for the cambelt pulley, and a dowel pin for the outer pulley. Quote Link to comment Share on other sites More sharing options...
rwdlancer Posted November 6, 2008 Share Posted November 6, 2008 ohkae this is what i needed to know thankyou! just tried getting the ex goin before. where exactly are these marks on the oil pump housing? is it lyk u long lump bowt 6mm wide along the pump? i need to get this thing going its been to long!!! Quote Link to comment Share on other sites More sharing options...
fuel Posted November 6, 2008 Share Posted November 6, 2008 yeah it's a raised up triangle (could be a rectangle on older engines) about 5mm wide at the most. There will be a notch on the crank pulley and oil drive pulley to match. Quote Link to comment Share on other sites More sharing options...
rwdlancer Posted November 6, 2008 Share Posted November 6, 2008 and are they suppose to line up together? Quote Link to comment Share on other sites More sharing options...
fuel Posted November 6, 2008 Share Posted November 6, 2008 that's generally what they do.. Quote Link to comment Share on other sites More sharing options...
Trigga Posted November 10, 2008 Author Share Posted November 10, 2008 had a go today, couldnt get the cam cover off so smashed it to pieces wrong cambelt sent by the guy i brought it from so that'll go back and ill get one from repco or supercheap so i need to line up all the markers facing the same way? whats TDC? cheers Quote Link to comment Share on other sites More sharing options...
fuel Posted November 10, 2008 Share Posted November 10, 2008 did I not just answer that question two times above already? TDC = top dead centre, ie when #1 piston is at the very top, beginning of the inlet stroke. Number #4 will also be at TDC at the same time, except it will be at the start of the exhaust stroke. Quote Link to comment Share on other sites More sharing options...
LAN_KILLA Posted November 10, 2008 Share Posted November 10, 2008 did I not just answer that question two times above already?TDC = top dead centre, ie when #1 piston is at the very top, beginning of the inlet stroke. Number #4 will also be at TDC at the same time, except it will be at the start of the ignition stroke. Quote Link to comment Share on other sites More sharing options...
rwdlancer Posted November 10, 2008 Share Posted November 10, 2008 churr for the help got myne running yesterday.was simple as in the end just wasnt looking in the right place for the timing marks. now off to put my twin carbs on..... Quote Link to comment Share on other sites More sharing options...
Trigga Posted November 11, 2008 Author Share Posted November 11, 2008 where did u find the timing marks bro? is it the letters like A etc? Quote Link to comment Share on other sites More sharing options...
rwdlancer Posted November 11, 2008 Share Posted November 11, 2008 its quite hard to explain but il gve it a go.if you take the water pump pulley off you can get a better look at it.just along a bit from the oil pump drive thers a raised up triangle thng tht lines up wth a cut in triangle on the smallest crank pulley.nd the one on the cam pulleys easy to see.a little white dot on the face of it. clean all around ur oil pump nd crank pulley and youl find it Quote Link to comment Share on other sites More sharing options...
Ke36 Posted November 11, 2008 Share Posted November 11, 2008 did I not just answer that question two times above already?TDC = top dead centre, ie when #1 piston is at the very top, beginning of the inlet stroke. Number #4 will also be at TDC at the same time, except it will be at the start of the ignition stroke. o shit, u didnt just do that, the world is about to end, run for cover Quote Link to comment Share on other sites More sharing options...
fuel Posted November 11, 2008 Share Posted November 11, 2008 sweet then, I'm just not going to hand out advice anymore whatsoever. Quote Link to comment Share on other sites More sharing options...
rwdlancer Posted November 11, 2008 Share Posted November 11, 2008 don't see why I should give advice if it's not appreciated. if that's being emo then so be it. I'm keeping my mitsi knowledge to myself now cunts haha. noooo dont do that.my car wouldnt be goin nw if it wasnt for you. help is much apreciated Quote Link to comment Share on other sites More sharing options...
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