1994 CR250 water pump question

sandman768
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sandman768
Edited Date/Time 10/10/2020 5:03am
Can anyone confirm the year Honda switched to a metal water pump shaft & drive gear. I’m thinking 97 as the part # changed and everything else associated with the pump assy. Stayed the same. Appears both styles are still available from Honda, but I don’t want to order another plastic gear... they crack... see photo.. thanks..
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sandman768
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sandman768 10/4/2020 3:48pm
10/4/2020 3:48pm
I will try the newer style water pump gear & update for future builds...
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Chance1216
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Chance1216 10/5/2020 4:08pm
10/5/2020 4:08pm Edited Date/Time 10/5/2020 4:09pm
sandman768 wrote:
I will try the newer style water pump gear & update for future builds...
I'm curious about this to. I've always wondered why manufacturers would use plastic over some type of metal.
NiekL
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NiekL 10/7/2020 3:44am
10/7/2020 3:44am
Yes, same story on the 125
sandman768
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sandman768 10/9/2020 6:43pm
10/9/2020 6:43pm
97 & up steel water pump drive gear fits perfect... nothing else changed... so for anyone rebuilding 92-96 Cr250, don’t buy the plastic water pump impeller/ drive gear, which they still sell. Buy the 97 & up part.
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JOE_SPROCKETS#1 10/10/2020 3:33am
10/10/2020 3:33am
Wonder if it will fit a 125 as well?
sandman768
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sandman768 10/10/2020 5:03am
10/10/2020 5:03am
JOE_SPROCKETS#1 wrote:
Wonder if it will fit a 125 as well?
Not sure about the 125... I would check all the part #S ...
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689
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689 10/11/2020 1:12am
10/11/2020 1:12am
sandman768 wrote:
I will try the newer style water pump gear & update for future builds...
Chance1216 wrote:
I'm curious about this to. I've always wondered why manufacturers would use plastic over some type of metal.
That Nino out of Italy showed the weight difference and it is pretty significant between the two. Also would be cheaper too.

I suspect they realised it was not that durable so they switched to metal.
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kincadepavich1 3/1/2023 6:57pm
3/1/2023 6:57pm
sandman768 wrote:
97 & up steel water pump drive gear fits perfect... nothing else changed... so for anyone rebuilding 92-96 Cr250, don’t buy the plastic water pump impeller/...
97 & up steel water pump drive gear fits perfect... nothing else changed... so for anyone rebuilding 92-96 Cr250, don’t buy the plastic water pump impeller/ drive gear, which they still sell. Buy the 97 & up part.

Hey there, I'm doing some work on a 1994 CR250 for a customer and the plastic water pump is cracked. Did the 97 water pump shaft end up installing with no issues? Is the overall length and the diameter of the shaft where it sits in the bearing the same? Thanks so much. 

sandman768
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sandman768 3/2/2023 4:52am
3/2/2023 4:52am
sandman768 wrote:
97 & up steel water pump drive gear fits perfect... nothing else changed... so for anyone rebuilding 92-96 Cr250, don’t buy the plastic water pump impeller/...
97 & up steel water pump drive gear fits perfect... nothing else changed... so for anyone rebuilding 92-96 Cr250, don’t buy the plastic water pump impeller/ drive gear, which they still sell. Buy the 97 & up part.
kincadepavich1 wrote:
Hey there, I'm doing some work on a 1994 CR250 for a customer and the plastic water pump is cracked. Did the 97 water pump shaft...

Hey there, I'm doing some work on a 1994 CR250 for a customer and the plastic water pump is cracked. Did the 97 water pump shaft end up installing with no issues? Is the overall length and the diameter of the shaft where it sits in the bearing the same? Thanks so much. 

Yes, as stated in my original post, it retrofits 100%, same seals, bearings. 

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