Right , not long had the top end done on the engine , had new valves , valve stem oil seals , new valve guides , etc done and a new timing belt kit as a pulley had sheared and bent the valves , so also put on a z20 let steel head gasket , eventually got it all running etc then had mot work done etc was running really well , not even done more than 300 miles in it since , had a slight oil light prob after a wee while sometimes the light would come on when idleing or it would flicker , but as soon as you touched the throttle it would go away again , so few nights ago had it out a wee spirited drive for 15 mins at the most , everything was fine drove home let it cool down turned it off . fine . next night as it was freezing a thought i would go out and start it up as battery not the best , so turns key , makes a funny metal noise hmmmmm , try starts again and it fires up fine no probs , so let it idle for a bout 20 mins everything fine no oil light or anything turn it off . last night goes out and checks the oil before going to start , oil seems fine not lost any , trys to start makes that funny noise again , but more as if starter was jammed , then batt was going weak , so trys to tow it along the street to bump it in 2nd , front wheels lock up hmmmm , try it one more time as was icy , same thing again locks the wheels up , time to abandon back in driveway anyone any iseas ? bottom end seized ? much would i roughly be looking at to repair a bottom end ? if it can be fixed ? and what parts are needed , or any other suggestions as im stumped and cant get it back over to the guy that usually looks after it at the moment.