Author Topic: Ring end gap?  (Read 1075 times)

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Offline Slapguts

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Ring end gap?
« on: February 27, 2006, 04:23:33 pm »
Finally got a set of rings for the old 750, and they seem awful close when in the bore. Checked my manual, and it lists nothing about what is too tight a gap, just what is too big.

Anyone know how much of a gap I need? They're NOS rings, standard bore. I thought they'd be right out of the box, but...
Current-
'76 CB550 Cafe project

Past-
'98 Triumph Speed Triple-Stolen
'76 CB750 Cafe Racer-Sold
'78 CB400T Crash Victim-Traded for a tattoo

Offline bwaller

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Re: Ring end gap?
« Reply #1 on: February 27, 2006, 04:34:16 pm »
I always used 0.018" ring end gap, what have you got?

Offline Slapguts

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Re: Ring end gap?
« Reply #2 on: February 27, 2006, 04:48:20 pm »
I always used 0.018" ring end gap, what have you got?

Not sure, but it has to be less than that. .018 sounds good. A set of valve springs and some gaskets, ans I have an engine again. Woo-hoo!
Current-
'76 CB550 Cafe project

Past-
'98 Triumph Speed Triple-Stolen
'76 CB750 Cafe Racer-Sold
'78 CB400T Crash Victim-Traded for a tattoo

Offline MRieck

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Re: Ring end gap?
« Reply #3 on: February 27, 2006, 06:20:00 pm »
.004" for every inch of bore in general
Owner of the "Million Dollar CB"

Offline bryanj

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Re: Ring end gap?
« Reply #4 on: February 28, 2006, 06:28:35 am »
If they are original Honda i doubt that the gap is wrong
Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

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