SOHC.co.uk Forums > CB350/400

Con rod stamp markings

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beemsquar:
Maybe it was the engineer who stamped them then. I've been over all my photos I took before I gave it to them and can't see these marks.

They are a professional engineering company and have all the equipment to do that kind of work,  I paid them to check the crank was Ok and to work out which bearings I needed.

I have all the bearings now based on their measurements, but need to work out how it goes back together.
Am I right in saying piston one would be on the left? Is this how you would normally refer to it?
I can't see the number 2  in that picture,  let alone the other con rods, that's why I sent it to be measured.

NigelWilmshurst:
I also gave my stripped engine to a very reputable engineer to measure all the bearing journals etc, and my con rods were marked the same, he also gave me a diagram for re assembly, I will check my rebuild photos and get back to you, make sure you have a parts washer to clean all the engine parts and blow off cleaning fluid with an air line, oil all bearing surfaces during assembly and only rebuild in a very clean dust free area, don't forget to service the oil pump.

Follow the manual word for word and you will have no problems.

Bryanj:
Way back when you used to do that to mark which bore but on a new higher stressed (relatively) engine I would never do that as it creates stress points

beemsquar:
Cheers for your help guys.

I will contact the engineer this morning to see if he can shed some light on it.
It was nearly 3 months ago now though,  as that's how long it's taken to get all the shells together,  seemed to be a European shortage or something!
I have got a small parts washer, I washed most of the parts last night, dried them off with an airline and bagged them all up to keep them clean.
A newbie question for sure, but can anyone shed any light on which bore is number 1? Is it the same on any vehicle?  It's a steep learning curve but I'm getting there.

I would love to know if anyone has any recommendations for engineering books etc that give the basic terminology and procedures to follow when building an engine.

hairygit:
Number one cylinder is the left hand end one as you sit on the bike.

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