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As far as I know tere are two diferent casing for Street- and Enduromodels. And of course the casings for the Kokussan alternator

Hi Tom,

I would take the sport seat.

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No, as said above, it´s a 500 (478ccm) 6 gear bottom end with 501 cilinder an heads plus a L5 cam. The rims are brandnew ones from Morad/Spain bought 15 years ago.

My tuned 500W has 501 barrels, 501 heads, a L5 cam and of course PHBH 28. But as said, these parts are dificult to find and not cheap! This motor will end in what probably will be my last project: a "pensioners bike " with heated grips, electric starter (my fist one ever) and after more th...

It´s not that easy! The 501 cylinders have a 71mm bore and Nikasil-cylinder liners that require special pistons (less clearance) and rings. You cannot combine for example iron cast liners with rings for Nikasil cylinders. The 501 cylinder does not enter in the original 478 cm case. So you have to bo...

That will be dificult to buy only a 501 motor in Spain. Like Mickey said, it would be easier to find a complete (no running?) Excalibur

As far as I know, the L5 was only in motors of the 501 (Camel and Coguaro, not in the customs). The cams of the 500 and 501 have a samller "ground diameter" (350: 20 mm, 500/501: 17,5 mm). 350 cams like the M don´t fit in a 500 motor because they woudl hit the connecting rods, meanwhile yo...

The L5 (II) is very nice as well and obviously the best for 500/501 (a M won´t enter in them) I´ve never tried a L5 in a 350. I know some people who prefer the M inspite of the S in their 350 circuit runners. The great advantage of the M is a good tourque all the way without any leak at mid range, i...

For me the M-camshaft is the best one

That´s true.
Since decades I only use the all aluminium ones.

Normaly I reuse the gaskets several times as well.
In former times I checked the torque after 500 km. To save some work (taking off the rocker blocks etc.) lately I do the same: a bit more torque, leave it some hours and then the torque recomended.

That´s great, grazie mil!!!!!!!

After a 50ccm Zündapp scooter my first real bike was a Suzuki GT 250. Two years later in 1980 my first 4 stroke bike a Morini Tremezzo Sport. Since then up to now only Morini 72°V (1988-1999 without bike). And probably I´ll keep on like this. Don´t realy need other thing. Actually I´m going to build...

Afriend of mine had this problem with another model (Scrambler?) on the motorway leavin the tunel in Hamburg. He was lucky not to fall. There has been a long long dicussion in the german forum also with specalists envolved and invetigacton in the labatory of an university (not ofically of course) It...

You can try a thread file if it is not damished en all the thread. Don´t remember the tread an in the moment I´m in Cadiz so cannot look. But I´ve cured the thread of a 500 with this file