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Post by comstar on May 9, 2021 21:42:50 GMT
You can rebuild her Andy....I just know you can.
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Post by duffer on May 9, 2021 21:50:21 GMT
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Post by johnjones on May 10, 2021 7:10:21 GMT
Yep, that's why i Make a drain hole rather than the one honda out there, just like Thier tanks !
Flywheel magnets well and truelly corroded to the stator poles...damage done.
Water and skrubbing brush...more water, hot water, much preying and intelligent use of a socket and bar, but once some movement gained it will free off.
Just be patient...
Hope the rest of the engine is free.
You drained the sump yet and what came out ?
With plugs out and rocker arms off, are all valves closed ?
Rocker arms can be removed without troubling the 4 centre head bolts, but the cylinder "on the rock" may be more "difficult", but adjusting screws can be excersice to show if a valve is stuck or free...
Hope the 4 centre head bolts are not problematic.
If valves free, you can concentrate on the flywheel relatively worry free...
Take your time and enjoy...
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Post by robinbanks on May 10, 2021 7:39:59 GMT
Great info.
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Post by andy1kenobe on May 10, 2021 8:21:00 GMT
Thanks for the encouragement and confidence guys. Also for the offers and advice.
When the cover came off and I saw that I called the thing a cow!
The rusty water was much less than the watermarks and there has been no puddle. I admit that when I saw I half heartedly gave it a turn before putting the cover back on. When laddo is home from school we'll drop the oil, pop the rocker cover off and go from there.
I have only ever had one seized engine, my AP50. The previous owner had put a wrong bearing in seriously restricting oil getting to the crank. Wall & Sager had to send the crank to somewhere in Blackpool to press out the pin and replace the bearing. Took a week and another couple of evenings to rebuild.
I will keep you all informed and add a few pictures. Any advice is gratefully received. Thanks.
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Post by buster on May 10, 2021 11:56:43 GMT
I'v just recently broken a 250 engine, so if you need any bits and pieces give me a shout.
I'll try a risky bold statement, my opinion only this, if you can replace an SD clutch then I reckon you can rebuild an SD engine. other than the centre cylinder studs (b*st*rd bloody things) the fiddly bit is the balance weights.
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Post by duffer on May 10, 2021 17:06:26 GMT
You are building up the tension here Andy.... Drop that sump plug and tell us what fell out !
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Post by CTB on May 10, 2021 17:12:16 GMT
I’m sure collectively we can provide what ever you need to get her going again.
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Post by duffer on May 10, 2021 17:53:29 GMT
Lord Beer has it sorted for you. Bad news...beer ! Good news...more beer 🍺
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Post by andy1kenobe on May 10, 2021 20:07:15 GMT
Ok chaps, here we go. Oil out. Some seriously gloopy stuff came out when draining and you could smell the mix I had put down the bores in it. There was quite a bit of this which looks like bits of grass??? Filter off. Rocker cover off, quite clean. Better than I was expecting. Nice condition with some evidence of oil getting there. I didn't notice this yesterday. Someone has been in here before. Nice use of a screwdriver or chisel. Why? Interesting. Homework got in the way so some more tomorrow. Thank you all for you support and offers. We do appreciate it and no doubt we will need to take you up on said offers. I will post up what we think is needed as we delve into it.
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Post by buster on May 10, 2021 20:38:10 GMT
looks to me like a thugs holding device has been used to tighten the mag wheel back on, hopefully that means the bolt wont be insanely tight. I wondered why a breaker hadnt taken the stator off my own 250 engine, I found out when I stripped it, it was unbelievably tight, I had to get so brutal with it that I snapped the cam chain...
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Post by bawbag on May 10, 2021 20:42:35 GMT
Hmm. Not the sort of grass I'm into either.
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Post by andy1kenobe on May 10, 2021 21:10:15 GMT
looks to me like a thugs holding device has been used to tighten the mag wheel back on, hopefully that means the bolt wont be insanely tight. I wondered why a breaker hadnt taken the stator off my own 250 engine, I found out when I stripped it, it was unbelievably tight, I had to get so brutal with it that I snapped the cam chain... The bolt came out without much force. Then I had the shall I shan't I moment about using the hydraulic puller on it. Shall I won but my legs are too big. I did think of the oil filter bolt but knew that would never shift the thing.
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Post by buster on May 11, 2021 4:50:52 GMT
looks to me like a thugs holding device has been used to tighten the mag wheel back on, hopefully that means the bolt wont be insanely tight. I wondered why a breaker hadnt taken the stator off my own 250 engine, I found out when I stripped it, it was unbelievably tight, I had to get so brutal with it that I snapped the cam chain... The bolt came out without much force. Then I had the shall I shan't I moment about using the hydraulic puller on it. Shall I won but my legs are too big. I did think of the oil filter bolt but knew that would never shift the thing. having done a few I'd say the oil filter bolt is the way if the threads on the mag are clean. once the bolt touches the end of the crank give it a nip up tight (no need to abuse it) then tap round the mag wheel with a hammer, it should come eventually, its a bit like the the barrels on the 400a, I thought they were never going to shift, but just kept tapping away with a nylon hammer until they freed off
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Post by johnjones on May 11, 2021 7:28:29 GMT
Does the flywheel turn ?
A tight taper and all that corrosion to defeat ?
Get the flywheel to turn first is what I would do.
All copper washers on the head bolts, the 4 centre ones ?
Notice the yellow paint, I wonder why that's there 😊?
Flywheel brutality, they tried to hammer it to get it to turn ?
The grass, bits of green gasket maybe ?
Examine that a bit more....
If you are going to use the oil filter bolt to remove the flywheel, make a steel button that fits into the end so that does the force, rather than the thinnish "tube" of the oil filter bolt.
Hydraulic removal, only as a final final final resort......can you get a flywheel and stator ?
Take your time and enjoy.
Ps, carbs and exhaust off yet and how do the ports look ?
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