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muc Started a new thread What's up with my cylinder?
7/28/2021 7:29pm 1984 CR250 Finished assembling engine after 35 years in a box. I've run the engine for about 30 minutes total while trying to sort out the jetting. Pulled the pipe to try and seal up exhaust manifold to pipe with high temp silicone and when I looked inside at the cylinder walls, saw these wear patterns. Pulled the cylinder to...
This forum thread has 17 replies.
muc Added a reply to What's up with my cylinder?
6/25/2021 12:11pm Yes this is a iron sleeve. It had already been bored .25mm over when I got it. I’m guessing the shop that bored it back in 1985 took it to the.75mm over it’s at now was because that’s the piston they had in stock. Remember that this is an engine that ate cast pistons due to the large exhaust port...
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muc Added a reply to What's up with my cylinder?
6/25/2021 11:08am Your experience is different than mine. During the reassembly of this engine I got tired of converting from inches to millimeters so I bought mid level digital caliper when I tested it with my standards from my micrometers, I find it to be off between.0005” to .002” and these deviations are not consistent. But when I test my old starrett...
muc Added a reply to What's up with my cylinder?
6/23/2021 10:03am Can anyone recommend a good shop in central Minnesota?
muc Added a reply to What's up with my cylinder?
6/23/2021 10:01am Before I assembled this engine I took the cylinder, piston and crank to Bill Bune in Anoka MN, talked to Josh. Asked him to check crank and piston to bore fit. He took the parts in back for a few minutes. Told me he couldn’t be sure about the crank because he had another crank in the fixture and because...
muc Added a reply to What's up with my cylinder?
6/21/2021 2:55pm I don’t have a bore gauge. But I can fit a .003” feeler gauge between the piston and cylinder wall a .004” won’t fit.
muc Added a reply to What's up with my cylinder?
6/21/2021 11:17am Wiseco instructions are .011" top and .013" bottom I did .012" and .014"
muc Added a reply to Repairing rubber mounts
3/5/2021 6:48am Works good to cushion between things like the shock reservoir, gas tank and ignition.
muc Added a reply to Repairing rubber mounts
3/4/2021 9:32pm And a cut up mouse pad.
murph783 Liked a reply to forum topic Marvel mystery oil
2/21/2021 5:42pm
It’s awesome for lubricating air tools. Motorcycles not so much
This forum topic has 11 replies.
muc Started a new thread TUSK vs VEVOR
2/1/2021 4:05pm I want to pull the crankshaft on my 1984 CR250R Looking at the TUSK crankcase splitter and crank puller/installer tools. Found what looks like "knock-off" tools made by VEVOR on EBAY for about 1/2 price. I have learned that a lot of times in life "you don't get what you didn't pay for" when it comes to tools (many things...
This forum thread has 4 replies.
muc Added a reply to TUSK vs VEVOR
2/1/2021 3:12pm I ordered the VEVOR. Have never used the TUSK tools but the vevor worked good for disassembly. I will update if there is a problem during reassembly. But so far looks like a good tool.
muc Added a reply to 1984 CR250 Can you help identify this washer?
1/22/2021 3:16pm Thanks for your reply Ed, I don't think it's part of the water pump seal. When I started this job back in 1985, I ordered a gasket kit and some of the seals. I didn't disassemble the water pump back then. It wasn't until last week that I read on this forum about the corrosion issues, so I disassembled that...
muc Started a new thread 1984 CR250 Can you help identify this washer?
1/22/2021 12:25pm I tore this engine down in 1985. 35 1/2 years later I'm trying to put it back together. When I unboxed everything this plastic washer/spacer was with the clutch parts. I've been thru the shop manual page by page, Looked at every parts schematic. I've reassembled the lower end twice trying to find a place for this. Driving me crazy...
This forum thread has 3 replies.