Main Motorcycle: 1970 Triumph Bonneville
Join Date: Jan 2013
Location: Pollock Pines, CA, USA
Other Motorcycle: None at this time
Rebuilding My T140V Engine
Been tearing down my T140V engine that I have in my 70 Bonneville. The barrel and head are at the machine shop (Raber's Parts Mart) in San Jose, CA. They told me the head needs new valves, guides, springs and seats. They said the cylinders need to be bored .040 over. Cost? = $1450.00. Ouch!!! Oh well, it has to be done and I don't know anybody better that can do it.
While the machine shop is busy with the head and cylinders I'm proceeding to split the cases and pull the crankshaft. Just about ready to pull the engine out of the frame but still need to get that nut and gear of the crankshaft on the timing side. Also noticed in the manual that the gears on the camshafts should have threaded holes in them to screw the puller bolts into. My gears don't have any holes in them at all. Hmmm???? Hopefully they'll pull off by hand!???
I also have my tank and fenders over at the painters and should be getting those back any day now. At first he said that he'd have them finished be April 7th and I made the mistake of telling him I wasn't in a hurry. I thought maybe the following weak he'd have them done but didn't hear from him. He finally called me last Wednesday and left me a message saying they've been primed and the red is painted. He thought the scallops would be painted the next day but it was depending on how many insurance jobs he had coming in. So I guess he's doing them in his spare time. As you can see I won't be ready for them for quite a while but just kind of itching to see what they look like.
When I took my primary cover off I notice that the primary chain was real lose. After a closer inspection I noticed that the new tensioner I put on about a 1000 miles ago was broken. The two curved ends on the forward end of it snapped off. What the heck would cause that? I check the chain for wear when I installed it so didn't have to put a lot of stress on the tensioner to get the right tension on the chain. Hopefully it was just a defective tensioner and I wasn't doing something else wrong.