steve327H Posted September 9, 2019 Report Share Posted September 9, 2019 Hi all, got a strange noise from the engine on my13/60 Herald which I'm hoping someone my be able to identify. It sounds just like a noisy layshaft bearing, but the gearbox is a freshly rebuilt 1500 unit with overdrive and the noise is still there with the clutch in and free wheeling but revving the engine. I've got good oil pressure and the engine ticks over lovely, just very rough sounding when revving. These engines are supposed to be good at revving but at 4000 it sounds aweful. I do have 0.035" thrust play, but there is no noise when using the clutch and even using a stethoscope there's no undue noises from the engine. This is my first Triumph so no idea how they should sound, but in all my experience on BMC A series I never had this issue. Are these engines just noisy? Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 9, 2019 Report Share Posted September 9, 2019 can you record and post the racket and no the engines are not noisy, even at more than 4k. thrust clearance is 0.006" to 0.014" 0.035" is wildy excessive and you may have serious trouble with the locations on the rear main getting worn away... its a sump off and look see let us know whats going on , you can take sump off without removing engine Pete Link to comment Share on other sites More sharing options...
steve327H Posted September 9, 2019 Author Report Share Posted September 9, 2019 I'll try and record the noise and have already purchased a full gasket set ready for a full strip/inspection and rebuild. Just trying to see if anyone has any ideas before I delve inside. There's an old receipt for work done in the past for when it dropped the thrusts, but did they rebuild using "standard" thrusts? May need some special solid ones, i.e from Custom Thrust Washers - but are they UK based? Link to comment Share on other sites More sharing options...
steve327H Posted September 9, 2019 Author Report Share Posted September 9, 2019 Are there are any knowledgable chaps in the Derby area? Be nice to get another set of ears to listen to it. Are there any local(ish) meets where triumph owners regularly congregate? Link to comment Share on other sites More sharing options...
dougbgt6 Posted September 9, 2019 Report Share Posted September 9, 2019 Derwent Valley Area meet near Derby. Have a look on the front page under Areas, Midland for details. Doug Link to comment Share on other sites More sharing options...
Pete Lewis Posted September 9, 2019 Report Share Posted September 9, 2019 if the crank contacts the rear main it can chew the lugs off the bearing cap and then theres even less to stop the half moon falling out many years ago i repaired a 1300FWD for thrusts in the sump and the fly wheel up against the back plate we had weld built up to re produce with some fettling the location lugs .. otherwise its a scrap block it lasted for over 10years theres been a few on here with the thrusts fitted about face including my engine . pete Link to comment Share on other sites More sharing options...
steve327H Posted September 10, 2019 Author Report Share Posted September 10, 2019 Thanks for the advice guys, looking forward to taking the Herald to the next club meet. Link to comment Share on other sites More sharing options...
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