Just holding my reed cage up to the light I can see the reeds are not sealing on their own....any opinions on whether or not they need replacing

I guess it might seem obvious that they do but I did not know if the primary compression was pushing back form the inside of the motor and causing them to seal anyway?

Not to mention I cant find a part number of the parts fiche so assume Honda wanted to sell the whole block....seems a stretch with such a consumeable part?

i think tyga do carbon reeds

The reeds are avaialble on there own. I ordered and received a set last year, there were fairly cheap too.

Do you remember how you found the part number mtec666?

Reeds only 14111KV3832
Looks like a later part no
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Why do things simply when you can complicate them

That helps a lot thanks

So I guess the reeds are the same across the MC18-28..... and only the manifold and stuffer design changed from MC18 to MC21/28?

Yes, the reeds are effectively the same for all NSR250s, and most NF5s. As you say, only the rectifiers (stuffers) differ.
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Andy.
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The reeds not closing will mainly effect the starting and low rpm running.
If they've gone a little soggy then there's a chance of fluttering at high speed, which isn't good.
In the (very) short term you could try flipping them over, but best to replace.

Matt.

Appreciate the responses.....thanks