MRC Forum- brought to you by www.morini-riders-club.com

A guy from NSW Australia posted a question on Facebook about removing the cam belt pulley from his 1976 3 1/2 Sport. The picture he posted shows the exact same case as mine! Looks like a few transitional bikes were sent to Australia. I gave him the correct answer (and threw some more business Ralph ...

Is yours like mine with the ball/roller bearing main on the flywheel side? If so it sounds like that inner race may be tight on the crank axle. Heating the case won't help as the bearing is retained by a plate inside.

Is this correct? Pictures I have seen show no retainer on the flywheel side...

My crankcase separating tool arrived. https://live.staticflickr.com/65535/51527991155_c125582915_b.jpg The M6 threaded rods are mild steel, so they bend, and the threads stripped when torque was applied. I have ordered some stainless steel M6 rod. https://live.staticflickr.com/65535/51527120996_5eff...

My 3 1/2 is an Australian delivered bike with an Australian compliance plate. I'm the 2nd owner. I met the original owner, who confirmed the bike had not been altered. His only comment was "It was always a pig to start!". Funnily enough, the brake light was only connected to the rear brake...

is it stamped A, K or J (250-2C) lower left side, or nothing at all. This is the only thing stamped on the cases (other than the "S" under the front cylinder). I also solved the mystery of the flywheel markings not aligning. I was reading through "The Blue Book", and discovered ...

That’s an impressively clean tool board by the way. Thanks! I retired almost 2 years ago and we finally moved into our very own home in the countryside. After years of renting, it's nice to set up a permanent garage! I decided I wanted a really big peg board. I joined two small benches together, bu...

Well, I bought a welder, but now I have a welder! The other bits & bobs probably came to less than $50.00.

Thanks! I wonder if my bike is a bit of a factory "bitza", because the timing marks on the flywheel are not where they should be!

1976 model.

I ended up buying a really cheap "Proworks" engine stand, which came from Poland. $110.00 AUD delivered to my door. I'd already contacted the supplier to get the dimensions, so I knew the motor would fit, however, I also knew surgery would be required to make it work (this gave me an excus...

I'm not sure what sort of bearing is on the flywheel side, but the crank aint moving! Spins nicely though. After I split the cases, the tool will actually come in very handy for pushing the crank through the (disintegrating) bearing on the oil pump side. I don't think it will push out that side very...

After searching YouTube I decided to buy a crank case splitter/separator tool. Yet another tool required for this bloody bike!

Yes, around the casing for the crank.

I'm having a heck of a time trying to separate the crankcases on my '76 3 /12 Sport. The front & rear dowels have been removed, and "yes", so have the two "hidden" cap head screws. I have a few mm gap all around, but the blessed thing seems to be sticking at the crank. Any su...