Cylinder cleaning

[fosterboy]

Hello I just ordered a cylinder from Alan Buehner and he told me to post on the site to find the best way to clean the Sachs cylinder up after being machined. A new liner was installed and it has oil and chip mix in it! Thnx All

68 SACHS 100, 69 SACHS 125

[454MRW]

Transmission fluid works well too. Thats what they taught us in Automotive class. I always wiped mine down after that with spray carb or brake cleaner followed by motor oil to keep it from immediately rusting. Mike

Michael R. Winter
1974 250 Harescrambler
1975 250 HS Project
1977 250 MC5 Project
1978 250 MX6  
1979 250 KTM Project
1980 250 MX KTM

[Kip Kern]

Wash very well in parts washer, wash very well in hot soapy water (liquid laundry detergent) rinse very well in hot water and blow dry with compressed air!;)

[john durrill]

We use Kips method.
  Cast Iron is very porous . It holds a lot of oil and grind stone from the honing. The transfer ports will hold a lot also ( up in the curves that are hard to get too). We clean the cylinder good in parts cleaner, blow dry, then use a bucket or sink of the hottest water we can handle and soap to scrub the cylinder and ports out. I have good luck with johnson and johnson baby shampoo. It leaves no residue when rinsed off and cuts through any oil left in the cylinder walls. We use  clean hot water to do the rinse and hit it with WD 40 or CRC to displace moisture and stop rust.
 If you clean one with just parts cleaner. Then do the soap and water you will see all the grit and dirt that was left in. If Its a 175 early cylinder use some wire brushes in the transfer ports. We found a lot of rust had collected up in the top curve of the transfers that would have come loose over time and gone through the engine on my sons bike.
John D.