fuddy-mucker Posted March 6, 2015 Share Posted March 6, 2015 Hi everyone, its been a while since my last visit due to financial and housing changes etc. My last post was about 5-6 months ago when my 6 month old mta4 S28's engine had seized. I managed to "un-seize" the engine due to rust on the lower internal parts it was subsequently stripped and cleaned and then re-assembled. now it turns over with lots of compression and seems okay. Except on one part of the rotation of the engine it appear to "stick" as if there is rust in the bigger main ball bearing race in the bottom of the crank case. so having googled all over the place i can't find this standalone bearing so... fear my engine is duff. theres also wear to the piston liner. can anyone point me in the right direction for a new s28 engine (not bothered for the s50 engine as I just want to get it running again correctly) and a screw set for the whole truck? if anyone has a spare "known to be working in good condition engine" I may well be interested pro 28bdr however. Thanks in advance Rob Quote Link to comment Share on other sites More sharing options...
chrisp Posted March 7, 2015 Share Posted March 7, 2015 http://www.ebay.co.uk/itm/Thunder-Tiger-MTA4-S28-Pro-28-4-6cc-Dual-Start-Engine-/351199905558?pt=LH_DefaultDomain_3&hash=item51c5254716 tis is complete engine Quote Link to comment Share on other sites More sharing options...
jordanp Posted March 8, 2015 Share Posted March 8, 2015 get a bearing pusher and push it out then maybe buy a broke engine for spares the the bearings fine and put that in there instead Quote Link to comment Share on other sites More sharing options...
fuddy-mucker Posted March 9, 2015 Author Share Posted March 9, 2015 Thanks guys, Ive seen the complete engine on ebay at 104 quid. That would be the easiest option bar none as all i would have to do is strip n seal it with hylomar engine sealent and reassemble and tune and break in. Having thought about it, this would probably be the best option as my current cylinder line has signs of scoring too. I have looked around for that bug ball bearing race for the crankshaft inside the crankcasing but cant find where i can buy just that bearing from. Although... i have found this! http://www.robinsonracing.com/catalog/gt.html A steel spur gear for the s28!! No more plastic breaking lol! Rc10 gt machine steel spur with clutch bell. Should fit shouldnt it? Thanks rob Quote Link to comment Share on other sites More sharing options...
jordanp Posted March 9, 2015 Share Posted March 9, 2015 dont buy it!!! unless you upgrade the main gearbox as some of the cogs are plastic Quote Link to comment Share on other sites More sharing options...
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