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Je suis un peu déçu de ce cylindre : j'ai une rayure verticale, pas une rainure mais plutôt une épaisseur ; un morceau de mon arbre à cames qui s'est détaché et a fondu ?? dois-je le poncer avec un papier de verre 800 ?

Thanks for the answers, i shoukd finish the job with very thin grinding.

That's it !

Original ones are Chrome-nickel-magnesium-steel made, vs OEM or aftermarket ???

I hadn't put the right photo, I wanted to talk about the seat of the valves...I'm going to have to replace a few of them because after my leak test (compressed air and combustion chamber filled with water), I I have small bubbles. I hope it's not the seat that's damaged...

Je n'avais pas mis la bonne photo, je voulais parler de la portée des soupapes...je vais devoir en remplacer quelques unes car après mon test d'étanchéité (air compressé et chambre de combustion remplie d'eau), j'ai des petites bulles. J'espère que ce n'est pas le siège qui est abimé...

J'ai 3 ou 4 clapets d'admission avec une légère corrosion (pas de trou) qui devrait disparaître avec le travail à la pâte. Je me demande si je dois conserver les originaux ou les remplacer par des neufs de rechange ? thanks

Manual says : Press in the oil seal until the plain face is 1.5mm below the gear cover face. Mine is just at the same level as i use a wooden block, and not a press. If i do more i fear to damage the face. Is it important to go 1,5 mm furthur ?

OK i keep only one on my cover. I put the older one but in good shape. The inner lip is good as the spring. The outer lip (photo) is a little damaged but it doesn't matter for the seal efficiency... agree?

Even if i put grease al other the second one ?

there is a slight distorsion on the right side of the seal (can see on picture) and the WD40 go through.

Thanks a lot ! a bit difference with mines but as kermit said, i began to mesure the thread...

sorry but i don't understand ...end float ?

Hi, Made the mistake to mix the bolts. I will be very grateful if someone keep the assembly plan...

Hi, Remove the old seal...looks quite good. Any more i put a new one but not seems to be perfectly "watertight". Finally, I decided to put side to side the 2 seals, in case the new one is not 100% good . Any suggestions ?

Thanks indeed

In fact i began to change the intake gasket...then i saw that the cam had pitted spots (so new cam and lifters) and the rocker arm really dirty ...so on... i try to do the things in order and take my time... The rockers are still the genuine ones and i know new good ones are quite expensive...

One pad after very soft grinding... What do you think ? still usable ?

The problem is that i should change all stuff , shaft and rockers with OEM or nothing (as camshaft with lifters)

The engine was not noisy or tapping bu i prefer to clean an inspect the 2 rockers shaft that seems to be original (130 000 miles). I wonder if i can grind gently (sans paper 1000) the arm and the rockers...