Honda-SOHC

SOHC.co.uk Forums => CB350/400 => Topic started by: Matt_Harrington on July 28, 2023, 03:51:58 PM

Title: 400 crankcases....
Post by: Matt_Harrington on July 28, 2023, 03:51:58 PM
I maybe overthinking things but whilst platigauging the crank shells, I noticed that the shells sit everso slightly proud of the half bore. As an experiment, I used a little plastigauge on the mating surface next to where the crank shells fit. Torqued down (without the crank) and then revealed the result.
What would you expect to find?
Title: Re: 400 crankcases....
Post by: robvangulik on July 28, 2023, 04:15:46 PM
0,0
Title: Re: 400 crankcases....
Post by: Matt_Harrington on July 28, 2023, 04:32:31 PM
Was that meant to be 0.0 ?
Title: Re: 400 crankcases....
Post by: Oddjob on July 28, 2023, 04:42:00 PM
I'd imagine a gap at the bottom as the crank pushes the shell into the casing, hence why they stand ever so slightly tall.
Title: Re: 400 crankcases....
Post by: Matt_Harrington on July 28, 2023, 04:45:36 PM
I'd imagine a gap at the bottom as the crank pushes the shell into the casing, hence why they stand ever so slightly tall.
Do you mean a small gap between the 2 small mating surfaces next to the shell housing?
Title: Re: 400 crankcases....
Post by: Oddjob on July 28, 2023, 05:03:53 PM
No I'd imagine right at the bottom of the half circle, where the oil hole is.
Title: Re: 400 crankcases....
Post by: Bryanj on July 28, 2023, 05:36:45 PM
The shells are always slightly proud and turn circular when casings clamped
Title: Re: 400 crankcases....
Post by: robvangulik on July 28, 2023, 06:08:53 PM
Was that meant to be 0.0 ?
Yep, on the continent we don't point but we comma!
Title: Re: 400 crankcases....
Post by: Bryanj on July 28, 2023, 08:01:17 PM
Damn forigners
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