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How original bike to go? My 350 sport hoses(engine and heads) go to home made box under seat. Picture somewere?

Holle64 wrote:How original bike to go? My 350 sport hoses(engine and heads) go to home made box under seat. Picture somewere?

from which year is your sport? The early ones vented into the great outdoors... no box
Later ones had a box under the tank, flat plastic thing (I have a few laying around I think)

It's 1981... Second trouble is my engines. I have three engine, two 350 and one 500, I think, but not sure, because Morini is new bike to me. What different is engines to look? Two is fat(bigger start???) and black heads. All engine is very good shape, two engine need carb and exhaust to run.

On my 1982 350K Sport, the two thin breather pipes from the rocker box covers run up then down and exit to the atmosphere below the engine.

The fat crankcase breather pipe behind the rear cylinder barrel runs almost straight upwards, stopping level with the bottom of the seat and under the right hand side panel. It's open to the atmosphere* but there is a baffle device about an inch along the pipe from the crankcase exit.

Here's a picture of its exit point next to the telephone switchboard:

*When I removed the sidepanels and moved the electrics, this left the breather pipe effectively acting as a 'filler pipe' for the crankcases if it rained, which is why, if you saw my bike at the AGM weekend, it had a 90 degree plumbing fitting stuffed in the end. I've now fitted a new, longer, breather pipe which runs to the back of the bike. If it was a racer they'd want a catch tank on the end of the pipe, but there's no sign of anything significant ever having come out of there so I'll probably just fit the breather filter that I know I've got knocking about somewhere.

Holle64 wrote:It's 1981... Second trouble is my engines. I have three engine, two 350 and one 500, I think, but not sure, because Morini is new bike to me. What different is engines to look? Two is fat(bigger start???) and black heads. All engine is very good shape, two engine need carb and exhaust to run.

Not 100% sure what you're asking, but....

A wide right hand outer casing is to make room for the starter motor. The starter has often been removed and sometimes a non electric flywheel and outer case substituted.

Barrels are two fins taller on 500 engines.

Thanks everyone to answer! Yes, that I mean, one engine are without starter, but two engine look same. Is't two taller fins in head or cylinder? Must be look engine in bike, is't 500cc. Perhaps I have three 350 engine...
What is baffle size(hole). Now I need breather box under tank and also storage box under seat. Is it some one? Hendre?

Holle64 wrote:Is't two taller fins in head or cylinder?

Two fins taller on the cylinder barrel.

Holle64 wrote:What is baffle size(hole).

The crankcase breather tube has an 18mm inside diameter.

Holle64 wrote:Thanks everyone to answer! Yes, that I mean, one engine are without starter, but two engine look same. Is't two taller fins in head or cylinder? Must be look engine in bike, is't 500cc. Perhaps I have three 350 engine...
What is baffle size(hole). Now I need breather box under tank and also storage box under seat. Is it some one? Hendre?

did just notice you are from Finland... hyvää päivää! Lived in Turku for 10 months but the climate is much to cold & dark for me... roads and tramps through the forest though are perfect... nice and empty
Tonight I'll have a look in the garage for the breather box, will post a picture and possibly a picture where is should go under the seat

mgelder wrote:On my 1982 350K Sport, the two thin breather pipes from the rocker box covers run up then down and exit to the atmosphere below the engine.

The fat crankcase breather pipe behind the rear cylinder barrel runs almost straight upwards, stopping level with the bottom of the seat and under the right hand side panel. It's open to the atmosphere* but there is a baffle device about an inch along the pipe from the crankcase exit.

Here's a picture of its exit point next to the telephone switchboard:

on all bikes I've seen the breather comes up and goes front to back on the left frame bar facing rear.... blasting all oil fumes behind you butt

I'm not sure if this will help, but the main crankcase breather is the thick brown pipe coming up from behind the rear cylinder and disappearing behind the side panel. It ends just at the top rear of the side panel, with a cable tie to the frame top rail. You must have the baffles in the pipe to keep the crankcase pressure so that oil can get to the rocker assembly. You can see a thin transparent tube from the front rocker cover which then follows the left front tube rail down and ends just below the crankcase. The one on the rear cylinder (just visible if you look closely) follows the right-hand frame downtube by the battery.

Welcome to north Finland now, here is a bright day and night but cold without snow . I take crankcase hose up(like picture) and put 18mm hole baffle to head. Is't right?

Yes! One engine was 500cc and ultralight model Without starter...