Thursday, May 6, 2010

Day 8: The Top End

The main reason this Montesa Cota did not run for years was rings. They are very difficult to find. I have gotten a stock set and each one has broken without the slightest hesitation. I don't know if it is from sitting on a shelf for 30 some odd years or if some other factor is involved. They were handled with the up most care.
I wanted something better for the old girl. I did some extensive research and found that I could use a pair of 1985 Honda CR125 rings. I specifically used Wiseco (part#: 2126CS) because I have always had good results and it is a solid product.
Another purchase I made at the same time was a ring installation tool. Probably the last one I will ever have to buy unless I am working on a V8 or larger. I have no information on the product at all except for the sticker on the package. That reads as follows: WPS 39-1005 Ring Installer. I would have to assume, which I do not enjoy doing, that the WPS is for White Power Systems, a well known motorcycle supplier. The tool performed very well and it was extremely simple to use.

All of these parts I got from the Vancouver Pro-Caliber Motorcycle. I have only two things to say about them. There is nothing that is even remotely close to being "Pro-Caliber" about that company and they will never get another dime of my money. Save yourself the nightmare people and shop somewhere else! You have been warned!

The next step was getting new nuts for the studs holding the head on and the top end together. Not so easy folks! The holes for the nuts to attach the studs are not big enough to get a tool on. A bit more research is needed. I do get all my nuts and bolts from Vancouver Bolt. They have taken care of myself and many friends for years! I think, at this point, I will just take the whole engine down there so they can find me a good solution to this problem. Sadly; Vancouver Bolt could not supply me with actual parts, but that is not to say that they didn't help. After consulting with their knowledgeable and friendly staff, I know exactly what I need. The actual nuts are 8mm @ 1.25 thread pitch, Allen nuts with enough room for 1/2 inch stud. It is the only thing that will fit down the very narrow 3 inch deep access hole and still be able to get a tool on it.
Folks, if you don't know what the heck you need and are starting a project, I highly recommend starting at Vancouver Bolt.