Today I bolted the block

  • Thread starter Thread starter Geezer
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Geezer

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After cleaning the inns and outs of the crankcase, today I bolted the monster together. It starts to look like an engine again  :D Have to work this weekend, so next week I will find me some time to put on some other parts. I like this engine  :D :D
 
interesting early cases, with no extra front outside bolts, but does have oil cooler bosses,originally, this would not have had an "O" ring between the case halves, did you machine the slot for it yourself?
engine number must be 1800 or less?
CLEM
 
Don't want to be in any way alarmist here Geezer and it may just be a reflection of the camera flash, but on the No1 big end I have circled it looks like the edge of the bearing cage is showing. Is this just a trick of the light? How much sideways (left right) play do you have on the conrod?


  Keith.
 

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Don't want to be alarmist either, but do make sure you've fitted a new g/box indent spring - annoying if it goes straightaway afterwards and means another stripdown - Regards - Phil
 
CLEMTOG said:
interesting early cases, with no extra front outside bolts, but does have oil cooler bosses,originally, this would not have had an "O" ring between the case halves, did you machine the slot for it yourself?
engine number must be 1800 or less?
CLEM
Click to expand...

Laverda%20engine.jpg


This is an early engine..#2057 with the cooler. Note the twin reinforcement tabs on the engine case  (rather than the three tabs) behind #1 barrel and should have the rubber mounted carbs rather than the solid spigot (late style) solid mounts. Three reinforcment tabs on the engine case appeared at the same time as the solid mounted carbs.
Head with solid mounted carbs is from my 76 model as it made more power.

No "O" ring on the oil pressure tunnel too.

Luciano Zen recommended using a wool thread between the oil tunnel and the exterior of the engine when assembling the cases. Very effective at preventing oil leaks..no machining required.
 
Engine number is 29**,, so according to Parker this must be 1975?? Yes indeed there is a bit of end play in conrod 1, engine has only run for 25.000 miles and this seems to have always been this way. There is no wear on the big end to measure and the crankshaft looks okay.
 
Geezer said:
Engine number is 29**,, so according to Parker this must be 1975?? Yes indeed there is a bit of end play in conrod 1, engine has only run for 25.000 miles and this seems to have always been this way. There is no wear on the big end to measure and the crankshaft looks okay.
Click to expand...

1975 as well (o-ring on the oil pressure tunnel happened for the first time on #2483 in factory archives). I must say that such a play would have scared me!
 
Connecting rod side clearance can be checked with the crank installed. Original spec is .10mm to .29mm when new and the limit of wear is an astonishing .35mm or just under .014 inches. Pretty large gap.
 
Have you replaced the litte return spring that engages the selector fork ?

    Hope you have !  FOR THE WANT OF NAIL THE HORSE WAS LOST.

              Timbo
 
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