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Showing posts from May, 2018

Honda CT90 Engine Reassembly

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I have one 1971 CT90 where I was going to rebuild the clutch because the kickstarter just wasn't turning over the engine like it used too,  and I also had a Big Bore kit from DrATV that I wanted to install. My intent was to just do the top end and rebuild the clutch with new disks, but when I opened up the cases to rebuild the clutch pack I found a slick black slime in the bottom of the case.  I didn't like the idea that there could be black slime in the rest of the engine, so I decided to disassemble the entire engine to make sure I cleaned everything out.  Since I was tearing everything apart I thought I would document step by step how everything goes back together in this post in case others were interested in knowing what the inner workings of a CT90 engine look like. Links to Related Posts: My Honda CT90 Clutch and Headset Nut Tool Cut Away of a CT90 Engine - CT90 Engine Exposed! Repairing Damaged CT90 Spark Plug Threads Using a Time-Sert Thread Insert CT90 Clutch P

Honda CT90 Engine Reassembly

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I have one 1971 CT90 where I was going to rebuild the clutch because the kickstarter just wasn't turning over the engine like it used too,  and I also had a Big Bore kit from DrATV that I wanted to install. My intent was to just do the top end and rebuild the clutch with new disks, but when I opened up the cases to rebuild the clutch pack I found a slick black slime in the bottom of the case.  I didn't like the idea that there could be black slime in the rest of the engine, so I decided to disassemble the entire engine to make sure I cleaned everything out.  Since I was tearing everything apart I thought I would document step by step how everything goes back together in this post in case others were interested in knowing what the inner workings of a CT90 engine look like. Links to Related Posts: My Honda CT90 Clutch and Headset Nut Tool Cut Away of a CT90 Engine - CT90 Engine Exposed! Repairing Damaged CT90 Spark Plug Threads Using a Time-Sert Thread Insert CT90 Clutch P

CT90 Clutch Pack Assembly Detail Build-up

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All CT90's at some point in their life will have the clutch start to slip and require the clutch assembly to be rebuilt. Links to Related Posts: CT90 Engine Reassembly Making a Low Cost Clutch Holding Tool for Your CT90 Shift Drum Stopper Replacement When Doing a Clutch Rebuild I have one CT90 where I could tell the clutch was starting to slip because the kickstarter just wasn't turning over the engine like it used too, so I decided to rebuild the clutch.  I don't normally tear the whole clutch pack apart when I install new clutch disks, but when I opened up the cases on this bike I found a slick black slime everywhere, so I decided to disassemble the entire clutch assembly (and actually the rest of the engine...) to make sure I cleaned everything out.  Since I was tearing everything apart I thought I would document how everything goes back together in this post in case others were interested in knowing what the inner parts of the clutch pack look like. I have als

DURO HF307 Tires for a Honda CT90

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I was recently looking for an inexpensive all around tire and when I found the DURO HF307's in a 2.75 x 17 for only $23.12 at Cedar Rapids Tire I decided to give them a try.  The DURO HF307 is DOT approved and has a trials style tread pattern which is just what I needed for my casual around town riding.