Starting the tune up: primary gear.

 So, all the parts are here, now it's just a matter of putting them in place. Right!? Easiepeasy, yeah.... wrong...

Let me tell you where we are at now.

In the previous posts you have seen we disemsambled the old ACMA engine, so we have an empty case that is in good nick. All the performances parts are at the ready, first step replacing the primary gear. For this we need to seperate the two protective plates that hold the primary gear and the springs in place. They are rivetted together so we need to drill out the rivets.

The new primary is from Bollag and has nice racing yellow reinforced springs (which will never be seen again!). These springs suck up part of the beating the primary gear gets when changing gears. I bought a kit to replace the gear that came with new shiny plates springs and rivets. After opening up the old gear indeed three of the old springs were broken, so replacement was necessary. 

Unfortunately the new shiny plates were too big.... so I decided to reuse the old, not so shiny, plates. But damn... those rivets are a bastard I managed to ruin the ones supplied without even getting close to attaching the plates. So the weekend was spent driving to Rijen to pick up a new set of plates and rivets. Unfortunately the plates they had were also too big but I needed the rivets antways. So inded up by the kit with plates and springs just for the rivets. Buying a 1000 rivets would actually have been cheaper!!!!

But this time with a bit more patience and slightly shorter rivets we were succesfull. New priamry with racing yellow springs is good to go!

Next step: the gears and shifting cross.