daverclasper Posted September 19, 2020 Author Report Share Posted September 19, 2020 (edited) Thanks. It runs on 99 and has had different fill ups from different areas of the country. Pretty sure it's not pinking , as had pinking on this car before (more of a tinkling sound to me) while messing with timing, though will try backing it off. My original shaft was very worn and had some non existent oil scrolls and not delivering oil through the holes on a good few rockers. That was a about 4 thousand miles ago and replaced shaft with a new, though cheapi. Old shaft didn't seem to be causing noise and I couldn't hear any difference with new one. I assumed that the rockers are always in tension with shaft (on that lower/back area of shaft, that was the worn area on mine, hence no noise), though not dismissing this, as no idea at this point (without stripping it) if the new shaft has worn quickly. Some how, I think maybe not usual tappet noise, as had that before and like Iain says, I could hear it at idle as well higher revs. As I can only hear it while driving it's a bit more difficult to try and pin point it. Edited September 19, 2020 by daverclasper Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 19, 2020 Report Share Posted September 19, 2020 is the tap regular & rythmical or erratic tappet noise is half engine rpm so there is a frequency to the tapping does it change or stay constant Pete Link to comment Share on other sites More sharing options...
daverclasper Posted September 21, 2020 Author Report Share Posted September 21, 2020 It is rythmical and regular. I have noticed a bit of a rattle/knock at the bottom, rear of engine with bonnet open. Whipped the GB cover off and louder inside car. Think it's clutch/front of GB area. Dissapears when clutch pedal down. Will go for a drive with cover off and see if I can get more of an idea if this may be it. Any idea what this noise may be?. Cheers, Dave Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 21, 2020 Report Share Posted September 21, 2020 what happens with a light touch on the pedal just to add a small pressure not operate the clutch ?? after that how old is the disc it may have a broken torque damper spring in its hub pete Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 23, 2020 Report Share Posted September 23, 2020 just been talking to Gully who has been chasing a tappet noise and reckons a pushrod has attached itself to the tappet spherical and the tap is from the pushrod tapping the cam follower , , you need to have the rocker in the check gap position and feel if the rod will lift/ drop the 0.010" or is it got some spherical lock on the tappet screw guess the solution would be a small flat on the tapper screw spherical to relieve the Fit ????? gully can read but cant post since the upgrade Pete Link to comment Share on other sites More sharing options...
daverclasper Posted September 23, 2020 Author Report Share Posted September 23, 2020 Thanks for that Pete. No time recently to mess about, will take a look when have some time. Cheers, Dave Link to comment Share on other sites More sharing options...
Gully Posted September 24, 2020 Report Share Posted September 24, 2020 Thanks for posting that, Pete. I can post from my up to date devices - just the old iPad 2 that I generally use for the forum (running iOS 9.3.5) won't allow me to participate any more! Gully Link to comment Share on other sites More sharing options...
daverclasper Posted September 24, 2020 Author Report Share Posted September 24, 2020 Welcome back Gully. Dave 1 Link to comment Share on other sites More sharing options...
Adrian Cooper Posted September 24, 2020 Report Share Posted September 24, 2020 Gully, can you say more about your sticking pushrod theory? You may just have found the explanation to the mystery noise that has had me baffled for nearly 20 years! Adrian Link to comment Share on other sites More sharing options...
Iain T Posted September 24, 2020 Report Share Posted September 24, 2020 On the pushrod issue, I did notice one of my rods was perilously close to the head casting. I meant to check it out but in my enthusiasm to finish I forgot, a common occurrence now! Something to do tomorrow....where are my Post-Its? Iain Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 24, 2020 Report Share Posted September 24, 2020 best explained by stanley unwin or magnus pike Pete Link to comment Share on other sites More sharing options...
Gully Posted September 25, 2020 Report Share Posted September 25, 2020 21 hours ago, Adrian Cooper said: Gully, can you say more about your sticking pushrod theory? You may just have found the explanation to the mystery noise that has had me baffled for nearly 20 years! Adrian Hi Adrian, I'd set my valve clearances and still had one distinct tappet sound, so I ran the engine with the rockers exposed to try the feeler gauge test. Whilst looking along the line it was clear one pushrod / tappet adjuster looked different in motion - the ball and socket of the push rod and adjuster weren't separating. As a result, the push rod was 'tapping' on the cam follower - quite a hard metallic sound. I'm yet to try a solution, but my intention is to take a small amount of material off the ball of the adjuster - it seems to be simply surface tension from the oil as opposed to any form of interference fit between the two parts. Gully 1 Link to comment Share on other sites More sharing options...
daverclasper Posted September 25, 2020 Author Report Share Posted September 25, 2020 (edited) Hi gully. Interested in this as trying to trace a "maybe tappety noise" (although maybe odd, as not apparent, until about 1500 rpm when moving?). I've never known where exactly usual tappet noise comes from, as in what metal parts are contacting each other?. Cheers, Dave Edited September 25, 2020 by daverclasper Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 25, 2020 Report Share Posted September 25, 2020 its run for 50 years and you wonder where tickety tock is coming from all that moves rotates ,rocks back and forth , jumps up and down the list is endless ....i think you could be chasing your tail and unless you spend unlimited £££s there is a reality that compromise sometimes happens utopia costs much more have you had a passenger have a listen to your clatter to help detect where this is emanating from pete Link to comment Share on other sites More sharing options...
daverclasper Posted September 25, 2020 Author Report Share Posted September 25, 2020 That's what I wanted to hear Pete. Got spoiled as it was Sooo quite until recently. I'll just put it down to a few character rattles and carry on driving. Cheers, Dave Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 26, 2020 Report Share Posted September 26, 2020 have you looked at the dizzy drive gear endfloat controlled by shiming the dizzy pedestal they can set up a clatter if its excessive you really need someone else in the car to do a bit of ah well yes urm !!! to eliminate mechanical or pinking as you seem a little unsure easy to retard the dizzy a bit if do better put it back where it came from not to worry but my first car was a long stroke side valve minx with some mods she pulled 7k easy and flew around with a odd tap tap tap running really well then a piston crown detached Oops!! pete Link to comment Share on other sites More sharing options...
ahebron Posted September 26, 2020 Report Share Posted September 26, 2020 My old Mk1 2.5PI Estate had a club footed tappet screw that caused me all sorts of grief till I got it sorted. IIRC it was cylinder 6 exhaust No idea how long it was on the car but depending how it was sitting it would 'drop' the pushrod It also popped all of its clutch springs but that was a bang each time one went. Adrian Link to comment Share on other sites More sharing options...
Mark B Posted September 26, 2020 Report Share Posted September 26, 2020 I have a loud tappet noise in my Vittese. Checked clearences several times. Once you get tuned into the tapping noise it's hard to ignore. I have a worn out Gt6, which runs quiter. Vitesse goes well, but tappetty. https://youtu.be/SXQNV0uxM_I Link to comment Share on other sites More sharing options...
daverclasper Posted September 26, 2020 Author Report Share Posted September 26, 2020 Mark, Are you are aware that the rocker pads can get dished (quite common I understand) and give a false feeler reading. A way to check if this is happening is to put a smaller gauge feeler in the gap when engine running and any too large gaps will quieten down Dave Link to comment Share on other sites More sharing options...
KevinR Posted September 26, 2020 Report Share Posted September 26, 2020 30 minutes ago, daverclasper said: Mark, Are you are aware that the rocker pads can get dished (quite common I understand) and give a false feeler reading. A way to check if this is happening is to put a smaller gauge feeler in the gap when engine running and any too large gaps will quieten down Dave Mark, if the rocker tips are worn by contact with the valve top then you need to think about using an SPQR tappet adjuster as it will cancel out the wear in the rocker tip Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 26, 2020 Report Share Posted September 26, 2020 Mark i dont see any oil coming from the rockers !!!!!!!!!!!!! pete Link to comment Share on other sites More sharing options...
daverclasper Posted September 26, 2020 Author Report Share Posted September 26, 2020 (edited) 13 hours ago, Pete Lewis said: then a piston crown detached Oops!! Always a worse scenario in the luring in the background Pete, as well as a it could be nothing drastic?. I'll take my chances and just look at any cheap/my time options to maybe figure it. Out of interest, is usual valve train wear the rocker/valve tip gap increasing from general wear , rather than valve rescission closing it (unleaded petrol debate aside)?. Cheers, Dave Edited September 26, 2020 by daverclasper Link to comment Share on other sites More sharing options...
NonMember Posted September 27, 2020 Report Share Posted September 27, 2020 10 hours ago, daverclasper said: Out of interest, is usual valve train wear the rocker/valve tip gap increasing from general wear , rather than valve rescission closing it (unleaded petrol debate aside)?. It can be both. It's not unusual for a certain amount of "bedding in" to happen after new valves are fitted (or the seats re-cut) but that's normally fairly short term. After that it tends more to be wear, although I've done quite high mileages on Triumphs without either being evident. Link to comment Share on other sites More sharing options...
Mark B Posted September 27, 2020 Report Share Posted September 27, 2020 13 hours ago, Pete Lewis said: Mark i dont see any oil coming from the rockers !!!!!!!!!!!!! pete Hi Pete That was the initial problem. You can hear the first start up video on YouTube when it was bone dry. Recon head had gunk in the oil way feeding the rockers. Cleaned out with Mig wire. Rockers stripped cleaned and blown through. Oil can now be seen weeping out of the rocker oil holes, but not pouring. I can run the engine with the rocker cover off without fear of oil going everywhere. Done a few hundred miles since rebuild and after a run the rockers look wet through the oil filler cap, but in the back of my mind I am still wondering if I still have oil supply issues. Link to comment Share on other sites More sharing options...
daverclasper Posted September 27, 2020 Author Report Share Posted September 27, 2020 (edited) 2 hours ago, Mark B said: Oil can now be seen weeping out of the rocker oil holes, but not pouring. I can run the engine with the rocker cover off without fear of oil going everywhere. Thanks Rob. Also Mark, that's all mine does and have wondered myself, as folk talk about getting covered in the stuff. Dave Edited September 27, 2020 by daverclasper Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now