K1 full restoration begins

[WestYorkshireBiker]

Thanks. Head has a K3 stamp in it but not sure if that helps!

A head skim and those valve seats need a regrind, also check the valve guides . Are you sure it is a K1 head ?

It just came with the original engine in bits as the bike has a K6 in it. The bike is a 1971 but not sure tbh. What else will show if it's a K1 or not?

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Head and barrels are different on a K1 to K6 

Show me a picture of the head side on and the top face and a front, top and side picture of the barrels and i will tell you if they are K1.

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[Trigger]

Barrels are not K1, Head looks K1 but, i need a picture straight down of the top of the head

[WestYorkshireBiker]

Barrels are not K1, Head looks K1 but, i need a picture straight down of the top of the head

Like this?

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[Nurse Julie]

Could you post a clearer picture of this jet for Trigger please. I've tried blowing it up on my phone, (the pic that is 😁😁😁) but it's quite blurry

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[WestYorkshireBiker]

Could you post a clearer picture of this jet for Trigger please. I've tried blowing it up on my phone, (the pic that is ) but it's quite blurry

(Attachment Link)

Here you go. I removed the o ring and placed it next to the jet.

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[Trigger]

Yep, That is a K1 head with a pepper pot jet. DO NOT Damage the jet as these cost ££££ 

[WestYorkshireBiker]

Thanks. Appreciate the help. On with the bottom end tomorrow. Micrometer at the ready!

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[Trigger]

Looks like that needs a new set of gearbox bearings, remove all the oil way bungs and give it a good clean 

[WestYorkshireBiker]

Looks like that needs a new set of gearbox bearings, remove all the oil way bungs and give it a good clean 

Yeah it's getting all bearings / o-rings etc etc replaced. Been stood for God knows how long. No rust I can see as it had some oil in but not much. Total restoration and rebuild.

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[WestYorkshireBiker]

Looks like that needs a new set of gearbox bearings, remove all the oil way bungs and give it a good clean 

Yeah it's getting all bearings / o-rings etc etc replaced. Been stood for God knows how long. No rust I can see as it had some oil in but not much. Total restoration and rebuild.

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So I was looking at the con rods today and found that none of the usual 1,2 or 3 markings are stamped on. Any idea what the stamps in the pic actually mean (there's no markings on the other side of the rods). I've got the chart to get the correct bearings using the rod and crank journal from the Hondaman book and some plastigauge but not sure why all the rods have these different markings!
Yours sincerely Worried from West Yorkshire.
(Also not sure if it's a '2 or 7' in the pic)

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[Trigger]

Early con rods are weighted differently to the later type and have different markings.
Make sure you know what journal they cam from and what way round that they came off. Do not get these mixed up 

[WestYorkshireBiker]

Early con rods are weighted differently to the later type and have different markings.
Make sure you know what journal they cam from and what way round that they came off. Do not get these mixed up 

Thanks again Trig. I've marked all the rods as I took them off so all ok there. Just got thrown by the lack of markings! Ta.

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[Trigger]

Does the other side of the rod have Japanese markings on them ?

[WestYorkshireBiker]

Does the other side of the rod have Japanese markings on them ?

Not that I could see. They were all blank.

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[Trigger]

Any markings that look like these