Stormin 9,981 #1 Posted May 31, 2019 About 3yrs ago I acquired a rather sorry '75 Raider 10. A none runner but complete. I got it going but it only ran briefly before stopping and refused to restart. After the usual spark and fuel test, and having no cover on the flywheel I tried to turn it over by hand. Turned one way but locked up the other. Off with the head and the piston was at the top of the bore. Pressed down on the piston and down it went with no resistance. Yes, you've guessed it, broken rod. On stripping the engine I found the sump had quite a lot of sludge in it. When the oil was last change is anyone's guess. So most likely that was why the rod broke. Anyway, the engine has been sitting completely stripped on a shelf and the rest of the tractor stripped and in a heap in a corner. This morning I thought it was about time I did something about the engine. The crankshaft has been checked and is fine. So is the bore. So I did the valves and started cleaning up other parts. Finally the turn of the head. The gasket was still attached and had to be pried off with a scraper. No wonder really, as it was stuck to the head with SILICONE. So out with a piece of plate glass and sheet of 180 grit. The first photo shows the start of fattening the head. The second after about 2hrs. I did bit more after the last photo' and it looks a bit better. There's still a bad patch at the bottom between the two bolts holes, but most of the rest is mainly clear. I'll finish it of tomorrow and order rod, rings, seals and gaskets next week. 5 2 Share this post Link to post Share on other sites
ebinmaine 69,049 #2 Posted May 31, 2019 Nice job and good show of determination and patience there Norm. just think. With all the metal you're removing. Maybe you'll get 11 horsepower??? 1 2 1 1 Share this post Link to post Share on other sites
WHX?? 49,534 #3 Posted May 31, 2019 Keep sanding Norm... you'll have her at 12:1 in no time! Hopefully this motor has ACR! 3 3 Share this post Link to post Share on other sites
adsm08 2,252 #4 Posted May 31, 2019 2 minutes ago, WHX22 said: Keep sanding Norm... you'll have her at 12:1 in no time! Hopefully this motor has ACR! Well if it has ACR will it even need gasoline, or can it just fly like Ironman? 1 Share this post Link to post Share on other sites
WHX?? 49,534 #5 Posted May 31, 2019 6 minutes ago, adsm08 said: fly like Ironman? Naw I think he is making a diesel out of her! 2 Share this post Link to post Share on other sites
formariz 11,988 #6 Posted June 1, 2019 I do them the same way on a piece of 5/8 thick plate glass with a whole sheet glued to it.However when they are that bad I start with 60 or 80 grit progressively going up to 220. It goes a lot faster that way. 2 Share this post Link to post Share on other sites
ebinmaine 69,049 #7 Posted June 1, 2019 7 hours ago, formariz said: when they are that bad I start with .....80 grit progressively going up to...... Us too but we go to 400 for just a few minutes. Share this post Link to post Share on other sites
Stormin 9,981 #8 Posted June 1, 2019 180 grit is the coarsest I have. I did find some 120 sandpaper in Carol's studio. Don't think she'll miss a couple of sheets. Finally got it finished today. It's probably take something like 5hrs total. Worst bit was the patch in the first photo'. With a straightedge across you could see daylight. The second photo' is how it looks now. I decided to temporary fit the head just to keep things together, till I get the parts I need. That is when I found another PO's bodge. One of the head bolt holes by the exhaust valve, has been tapped out the 3/8th UNC. Plus the bolt used is slightly longer with a longer shank. Not much I can do about the hole, but the bolt I will cut down to the length of the others and run a die down the shank, to get the same amount of thread. 2 Share this post Link to post Share on other sites
