also polluting your neighborhood while cleaning you bike -priceless.

I wanted to replace the three O-rings under the cylinder while I was in there but I appreciate the tip.

Excellent tips Curt

Sounds great fun & a triumph when you find that special part!

Old airhead wrench here also. Of course I’m referring to my exhaust flange wrench. It’s hanging on the wall about 5 ft from me.

Good point, I don’t think he checked the ring gaps. The cylinder sounded brand new at 50k miles, which is sone tribute to BMW. But something must be the wear component, and it’s ideally the rings.

Agreed, very “old school”. It’s how I work on my bikes, but I’m in my 60s and have been learning how to use tools for 45years, still learning. Recently elected to rebuilt both wheels on my 1977 Suzuki GT380B. Satisfying to ride a machine you’ve rebuilt from the smallest component back up, and for it to run & ride like it just rolled out of Hamamatsu. Kudos those old design engineers, they did an incredibly sound job. I doubt they expected, when drafting this bike in the late 1960s that there’d be some old guy tooling around on it in 2021!

Mine had over 100k on it and the cross hatching was still there!

Lube those splines!!!

Indeed, we never call these wrist pins.

I’ve sometimes treasured ability to proceed over cost & ordered parts to renew at current bore plus at one over, so when I strip the motor, I’ll be able to take it to my rebore guy if needed. I’m a very long term planner, too. I reason, if not this rebuild, then the next, those oversize top end parts will be there, when they may be unobtanium. My GT380, which is on second oversize, I knew if it develops a rattle, it’s going to be v expensive! No factory parts to go one more oversize, but a genius supplier found that in Italy only, the capacity was a little larger, so I have a stock top end kit from Italy, which I think is +2mm. Finally, I was super lucky five years ago to see advertised a set of new old stock cylinders! They were in Malaysia, still in their original boxes, blackened grease proof paper in the bores. I’ve never seen a single NOS cylinder for the later model, which has thicker exhaust studs, but to find a set is a miracle. So if ever I need to rebore, I‘ll use these! This bike should be in good order when they pop me into a grave.

Yes, all the pieces were still in the groove. Luckily no damage to the cylinder walls.

@@ClassicOctane Yeah its amazing how a piston with fucked up rings or cracked ringland can do no harm. Boggles my mind....✌️

@@y4nnickschmitt only on a four stroke! I’ve had a ring break on a two stroke multi, and if there’s a broken ring, it usually finds it’s way into a port & will trash an entire cylinder quite easily.

@@GT380manTrue. I thought it was fairly obvious that I was talking about 4 strokes though 😉

why

@@matias7497 lets say you're tearing down a left cylinder for any gasket leak, replacing the gasket and reinstall it. Now you do the gasket to the other side and once open you find a cracked piston, a broken ring or whatever damage require to replace parts in both cylinders. That means you'll take off again the first one.

Other parts was still in the ring groove.

The rest is still in the groove.

They rest is still in the groove.

They are on both sides but you only need to remove one side to slide out the pin.

@@ClassicOctane have a look around 14 minute mark. Verify piston pin circlips on both sides. Maybe some camera magic in video, or my old eyes, it appears piston pin pushed in from camera side, and clip installed only on opposite side. Good luck withvthe bike. I remember unboxing a new one at the dealer! 👍

Trying To Escape by Arc De Soleil

@@stefanpia5419 Great thank you so much.

@Scott Riverwood yes until you ordered new rings for 1 piston which were broken but 1st cylinder you reused rings.