migti 0 Posted May 15, 2007 hi all my 6 was pressurising up and using water, stripped it got head skimmed, new gasket ect rebuilt it today fired up perfect but has a right tap when revving up!!?? i can remember seeing somthing a while back about 6 engines and top end noises but it did not do it b4 strip last week Just to c if anyone can point me in right direction! Cheers Share this post Link to post Share on other sites
migti 0 Posted May 15, 2007 just to add if anyone could confirm how to time up this engine would be much appreciated, i locked cams with pins and bottom end thro hold in pully but have been told pully sometimes not right any info app cheers Share this post Link to post Share on other sites
Richie-Van-GTi 71 2 Cars Posted May 16, 2007 The tap may just be the hydraulic lifters arent full with oil yet, they should fill themselves after a bit of running. Share this post Link to post Share on other sites
welshpug 1,657 Posted May 16, 2007 just to add if anyone could confirm how to time up this engine would be much appreciated, i locked cams with pins and bottom end thro hold in pully but have been told pully sometimes not right any info app cheers you need to loosen the 3 bolts/centre bolt (depends on which version pulley is fitted) on the cam pulley before tensioning the belt, this ensures that the cams are in the correct position here is a pic of the type you loosen the centre bolt. as Richie said, the tap is likely to be empty lifters, just make sure you have a good quality oil filter with a non-return valve to prevent the head from draining when parked up. Share this post Link to post Share on other sites
migti 0 Posted May 16, 2007 cool yet to take it out a run, just somone pointed out that the hold for timing the bottom end is on the outer part of the pulley which is joined by the rubber dampner. an this can move with wear??? start fine so suggest timing not out so ill get her build n out a run lol cheers Share this post Link to post Share on other sites
Alastairh 47 Posted May 16, 2007 Yes your right, it seems the bottom end pulleys on these are a bit shizzel. For instance, mid 6 swap for my 205 at the week, the cam pulleys was out by a 3rd of a turn compared to the bottom end pulley, Anthony was luckily there and said yeah i've heard of it before, and the engine ran before we took it out, so yeah just be careful Id give it a small amount of time, as Richie said it could be the tappets needing time, but these heads have a habbit of tappating due to dodgy valve guides. Couldn't comment further though myself as i've not experienced it Alastair Share this post Link to post Share on other sites
migti 0 Posted May 16, 2007 cheers for reply so does anyone know the bootom end setting for theses 6 engine i.e tdc on no1 or timed safe all 4 level ect just so i can check cheers Share this post Link to post Share on other sites
BuD 0 Posted May 16, 2007 (edited) If the bottom pully rubber has slipped (so the hole is not correct in relation to the recess in the block) you can fit a replacement lower pully to time the crank. Gti6 heads are notorious for tapping when disturbed which comes from the valve guides either not being changed or the valve getting a knock during refitting. Check it out on the 306gti6 forum click me Edited May 16, 2007 by BuD Share this post Link to post Share on other sites
