Pinned So what have you done to your bike today?

she's an angry little thing and punches way above her weight class.

 

Got an MC22 engine in at work (yay 250 nostalgia), customer races them and had a mechanical over-rev and it dropped valves, he bought a spare engine with a good bottom end and made a good top end and threw it together.

Brought it to us for clearances and some thread repairs as he just chucked whatever shims he had in wherever. As usual start running out of 185, 180, 175 shims as they seem to be the most used sizes.

#4 inlet valves had huge clearance, as in, visibly it looked like at least 5mm. I put the biggest shims I had in there and the clearances didn't change. Pulled the rags out of the ports that the customer put in there, #4 inlet valves are more bent than most politicians.

One of the thread repairs is easy enough (cam cover bolts, 6x1 helicoil will fix it) but the other is for the idler gears between cams and crank. That assembly looks to be bolted down with the head bolts, so if one of those is gone it's a thread repair in the block.

It'd have to come apart anyway to sort out the valves and do the thread repair on the block. But the Honda's don't have a removable cylinder block, the pots are part of the top crankcase like most modern bikes. Just waiting to see what he wants to do with it.

 

Linkin, that will teach you for being a Mechanic.

 

Got my brothers old RT100 going yesterday, and fanged around the yard on it. Chucked the daughter on the seat with me a putted around slowly, now I think she (3) wants a PW50.

Sounds good to me!

 

Slung the radial master around in the back of the truck a few more times. really need to get that into the garage and cleaned out so I can test in on the zx4r. Life is still in the way of my riding/wrenching so not much happening other than keeping batteries charged and occasionally warming up the ones that run in the garage

 

or make a simple dyno if you have skills.. i dont. My mate Gyro has been talking about it .

 

That page is reminiscent of the boost bottle
https://motocrossactionmag.com/forgotten-motocross-tech-the-boost-bottle-craze/

The FZR's with the EXUP already have an RPM dependent servo motor, that could have another drive wheel and cable attached to it to manipulate something in the airbox

 

Bought another set of plates for the bandit to get that polished look.
This time no Scotch Brite.

 

Working on a YZF-750SP at work today. A whole bunch of custom work was done to it here 3 years ago before I started, to fit some marchesini wheels and a Yamaha factory racing swingarm. It has a nice set of Keihin FCR's on it.

Unfortunately it looks like it has sat outside ever since, the fuel is rotten and the tank has had a previous repair on the bottom which is now leaking.




Here's what it looked like at the time it was done

 

Messed with the radial master cylinder for a bit. Noticed it's missing a part. Buddy has it, but its a 2hr slog away comfort on the new whip shall come soon, but not soon enough.

 

I got the 750 running with some fresh fuel on remote reservoir and a set of plugs. The old plugs were wet, black and finger tight.

She's running rich as with black smoke and after fires out the exhaust.

The flat slides are noisy as hell with the airbox removed.

Got to see what the customer wants to do with it now