poxon 5,731 Posted September 25 Author Report Share Posted September 25 18 hours ago, mC HULL said: finally got time throw this together a f**k about crank case no so get some different then crank id bought wasn’t true so rebuilt crank new rod bearings bottom end gaskets a 3 month wait so have to make em from gasket paper got me pal doing me head in he’s dropped me kxf450 engine that’s locked up want to be out weekend the cases i got lol once vapour blasted Can’t beat a set of vapour blasted cases when assembling an engine just makes the process so much nicer and more enjoyable. Looks good mc I made my own vapour blaster as I didn’t fancy paying about 7k for one I used a eBay special 220l sandblast cabinet and a submersible pump in a plasterers bucket probably cost me about £500 all in to build it and can get the same results as a professional built one. Gunner be starting to put my yz project back together this weekend as I’m due to collect the frame back from the powder coaters on Friday night the Yamaha blue frame colour is a pig to match in powder the closest to the original colour is Bentley blue 1 1 Quote Link to post Share on other sites
mC HULL 12,426 Posted September 25 Report Share Posted September 25 55 minutes ago, poxon said: Can’t beat a set of vapour blasted cases when assembling an engine just makes the process so much nicer and more enjoyable. Looks good mc I made my own vapour blaster as I didn’t fancy paying about 7k for one I used a eBay special 220l sandblast cabinet and a submersible pump in a plasterers bucket probably cost me about £500 all in to build it and can get the same results as a professional built one. Gunner be starting to put my yz project back together this weekend as I’m due to collect the frame back from the powder coaters on Friday night the Yamaha blue frame colour is a pig to match in powder the closest to the original colour is Bentley blue i did the same mate i use to blast in the cabinet with aluminium oxide but the dust lol so i did the same it works a treat like you say much better all round leaves them like new i’m struggling with the blue on this one’s clutch case going to get closest today the frame i’ve just blasted. so 2 k it tomorrow hopefully just getting spokes now i’m dreading 2 Quote Link to post Share on other sites
mC HULL 12,426 Posted September 25 Report Share Posted September 25 stripped me mates kxf 450 down that locked on him head everything ok until i got to the crank big end seized solid lucky the full top end is still like new 1 Quote Link to post Share on other sites
poxon 5,731 Posted September 25 Author Report Share Posted September 25 8 hours ago, mC HULL said: stripped me mates kxf 450 down that locked on him head everything ok until i got to the crank big end seized solid lucky the full top end is still like new How many hours had this engine done what’s the cause of the bottom end locking up? Quote Link to post Share on other sites
mC HULL 12,426 Posted September 25 Report Share Posted September 25 32 minutes ago, poxon said: How many hours had this engine done what’s the cause of the bottom end locking up? not sure mate id say chances are and oil issue i didn’t split the cases need to find the flywheel puller think it’s in me shed i’ll finish it tomorrow few pics up 1 Quote Link to post Share on other sites
poxon 5,731 Posted September 25 Author Report Share Posted September 25 Gotta be oil starvation mate I know a lot of people that have these 4t mx bikes service them but forget to change the oil filter it’s self could be clogged stopping or slowing oil circulation 1 Quote Link to post Share on other sites
mC HULL 12,426 Posted September 25 Report Share Posted September 25 Just now, poxon said: Gotta be oil starvation mate I know a lot of people that have these 4t mx bikes service them but forget to change the oil filter it’s self could be clogged stopping or slowing oil circulation the filter looked ok i’ll see the pick up when i split the case but i think it will be oil caused it 1 Quote Link to post Share on other sites
poxon 5,731 Posted September 25 Author Report Share Posted September 25 Just now, mC HULL said: the filter looked ok i’ll see the pick up when i split the case but i think it will be oil caused it Ya man got lucky when the bottom end locked up usually these 4t take a shit and push the valves in to the piston and mangle the head…..very lucky 1 Quote Link to post Share on other sites
mC HULL 12,426 Posted September 26 Report Share Posted September 26 14 hours ago, poxon said: Ya man got lucky when the bottom end locked up usually these 4t take a shit and push the valves in to the piston and mangle the head…..very lucky i’ve done a few we’re con rod has snapped Quote Link to post Share on other sites
mC HULL 12,426 Posted September 26 Report Share Posted September 26 can’t work out what it is bigger bits elastic but stronger then sealant would be Quote Link to post Share on other sites
mC HULL 12,426 Posted September 26 Report Share Posted September 26 looks like sealant from cases and grit sand maybe that’s passed the seals on the output shaft and gear sensor Quote Link to post Share on other sites
mC HULL 12,426 Posted September 26 Report Share Posted September 26 clean all the oil ways and send crank off get it back with gasket seals bearings etc 1 Quote Link to post Share on other sites
poxon 5,731 Posted October 7 Author Report Share Posted October 7 Quote Link to post Share on other sites
poxon 5,731 Posted October 7 Author Report Share Posted October 7 Just now, poxon said: Having problems adding pictures any ideas lads Quote Link to post Share on other sites
poxon 5,731 Posted October 7 Author Report Share Posted October 7 Quote Link to post Share on other sites
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