BIMOTA DB4 PROJECT: PART TWO, THE CLEANING.

As part if getting to know a new project bike, I find giving it a good clean helps you to understand what will be needed.

2w ago
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Diving right into this project. Have already ordered some basic items that I know I will need. Service parts, brakes, tires and a few other small bits. As you could see in Part One, the bike has some dirt and grim on it from normal use. This bike has about 7k miles so some dirt is to be expected. From my experience this dirt can be hiding issues, or be used to hint at existing issues that need fixing, like weeping seals. As such I find that a deep clean at this stage in a project is very helpful. It accomplished a few things. First it forces you to go over the whole bike. This lets you better understand where all the components are and how they fit together. Second it lets you find any red flags showing deferred maintained, or someone that ignored a leak. Third it literally gives you a clean slate for the future. If there ends up being a leak or issues, you know how everything looked when you first started riding the bike. And finally it just gives you something to do while waiting on parts.

For all my projects I tend to break things down into the sub systems. I remove the brake calipers, fuel system, and a few other items. It is easier for me to work on a bench and with the smaller components in my hand it is easier to scrub.

Some light degreaser and an acid brush cuts through most of the dirt. I have an ultrasonic tank for the really stubborn stuff. Brake lines get taken off to be properly flushed. Masters stripped for rebuilding.

Rather satisfying process really. Good news to report is that the brakes are in great shape. Just a good cleaning, fluid flush and fresh pads is all this bike will need. Many overlook flushing all the old brake fluid from the system. Over time it jells up and can reek havoc.

It is important to stay organized as the shear number of small parts can become overwhelming. I have grown to love these small silicon trays. But old take out trays work well too!

Controls and other plastic parts are treated to a brush down with some water and a little soap. Nothing fancy, but these little details now really pay off with the final product.

All the bodywork is treated to a nice detail. First a wash, then some clay bar to remove all the old contaminates. After that I like to seal the paint with Jescar, and top with Colinite 845. I do this on all my bikes. It gives a deep rich shine that is easy to maintain and long lasting.

The engine was scrubbed with a bit more vigor as the dirt is more caked on. A few its with the pressure washer were needed to really knock everything loose. Not looking to make everything perfect and "as new" Just want to show it for the well loved used machine that it is.

Overall things are turning out well. Have not found any major old leaks or anything to worry about yet.

The rearsets, exhaust, and clip ons all got the same love. All of the billet parts were also wiped down with some Autosol polish to lock in that beautiful shine. The frame was cleaned and protected as well.

I will do the wheels when I change the tires. Next step is to rebuild the carburetors.

Anyone else go through this ritual with a new project?

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