why two part numbers for each size piston rings?

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baldock
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why two part numbers for each size piston rings?

Beitrag von baldock »

Why does the Honda fiche show two different packs of piston rings for each size piston?

The only difference in the part numbers is the last digit.

eg. RINGS A = 13011429003, RINGS B = 13011429005 (both for standard size piston)
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volkerxl
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Re: why two part numbers for each size piston rings?

Beitrag von volkerxl »

Maybe to suppliers?
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baldock
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Re: why two part numbers for each size piston rings?

Beitrag von baldock »

I'm about to fit the barrel (rebored to +0.50)

I have the NOS Honda +0.50 piston (13103429000)

I have the NOS Honda +0.50 set of rings (13031429005)

But CMSL fiche shows 2 original Honda +0.50 sets of rings, mine and the same part number but ending in 3.

There must be a reason for this and I'm reluctant to continue with the assembly until I find why.
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baldock
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Re: why two part numbers for each size piston rings?

Beitrag von baldock »

I found out the reason why.

The 003 set were the original rings that were discontinued and then superseded by the 005. The 005 ones are now also discontinued.
Different part numbers but exactly the same product.
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