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Author Topic: 400/4 bore sizes?  (Read 2060 times)

Offline Matt_Harrington

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400/4 bore sizes?
« on: June 14, 2023, 07:50:50 PM »
Are the bores on a 400/4 (standard) 51mm? Or is that approximate?
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Matt
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CB400F 1976 -  Almost finished
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Offline Deano400

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Re: 400/4 bore sizes?
« Reply #1 on: June 14, 2023, 08:04:12 PM »
51 according to this:
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Offline Matt_Harrington

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Re: 400/4 bore sizes?
« Reply #2 on: June 15, 2023, 08:45:06 AM »
So, A piston (std) is going to be around 50.975mm in diameter? I have some spare barrels and pistons and so I want to mic things up to see what I have...
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Matt
___________________________________
CB400F 1976 -  Almost finished
CB400F 1977 - On the road!
Moto Guzzi Le Mans 2 - 1981 (undergoing a spruce up)
CD175 - To be restored
Triumph Speed 400
BMW F800GT

Offline GC400

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Re: 400/4 bore sizes?
« Reply #3 on: July 05, 2023, 06:28:43 AM »
Piston skirts standard are 50.97 -/- 50.99
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