rulloyd Posted April 27, 2019 Report Share Posted April 27, 2019 Hi all. Way back in the 80's I fitted a brand new crank into my GT6. I was rebuilding the engine at the time and a local BL dealer was selling NOS cheap. Now I'm rebuilding the engine again. I'm wondering if I should have had the new crank balanced or is this completely unnecessary? Incidentally, the engine was in quite a mess including wear on the crank when taken apart this last time. Thanks for any advice. Rich Link to comment Share on other sites More sharing options...
RogerH Posted April 27, 2019 Report Share Posted April 27, 2019 Hi Rich, the TRiumph cranks were supplied in a balanced condition. Roger Link to comment Share on other sites More sharing options...
Pete Lewis Posted April 27, 2019 Report Share Posted April 27, 2019 There are specialists who can balance to finer tolerances than orig production and will need flywheel clutch and front damper as an assembly , they will spin the whole . Not really neccessary , all down to preferences .it can make for smoother revs. Pete Link to comment Share on other sites More sharing options...
rulloyd Posted April 27, 2019 Author Report Share Posted April 27, 2019 Thanks both. I was wondering because I happened to watch the GT6 episode of Car SOS where the crank was balanced by Jigsaw https://m.youtube.com/watch?v=M17XcEbhcOQ&feature=youtu.be Mind at rest thanks👍 Link to comment Share on other sites More sharing options...
JohnD Posted April 27, 2019 Report Share Posted April 27, 2019 No such thing as a crank "supplied already balanced". It will be statically balanced, by adjusting the counter weights built in, but dynamic balance, when bolted up to the flywheel, clutch cover, front pulley, is a different story. Ideally, this balance that can only be done on a special.rig, should be followed by equalizing the conrod and piston weights, which can be done at home. John Link to comment Share on other sites More sharing options...
Guppy916 Posted April 27, 2019 Report Share Posted April 27, 2019 I had all mine done at http://www.ocservice.co.uk/services/balancing Crank shaft, flywheel, con rods & pistons , dont forget to take your new clutch cover as well Link to comment Share on other sites More sharing options...
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