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Enduro Engine - 2 stroke Cylinder, Piston, Tranny, Bearings, Clutch, Pipes & Silencers, etc.


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  #1  
Old 06-16-2019, 12:23 AM
Jim_C Jim_C is offline
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Default 250 to 300

Men,

I have a 2012 EC250R and was wondering if a 300 cylinder/rod/piston/head will fit on my bottom end? It's time to split the case for a complete rebuild. I ride Arizona single track, moto some and have raced 2 out of the last 3 years in the Idaho City 100.

What advantages if any is the 300 in your opinions? I did swap frames about a year ago and found a 300 frame from GoFasters. My 250 frame broke in three places.

Running Metamucil in the CamelBak,

Jim


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  #2  
Old 06-16-2019, 03:30 AM
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Rod is the same.. 300 is a pussycat but can still RIP.
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Stinger T125 Suzuki
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Old 06-16-2019, 04:49 AM
fred99999au fred99999au is online now
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I'm more interested in the contents of your camelbak?
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Old 06-16-2019, 10:53 AM
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Zman Zman is offline
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The 300 is a bit easier to ride as you can ride it a gear higher and lug the engine. The 250 and 300 share the same bottom ends. The CDI is different and you can run the 250CDI on a 300 but the 250 CDI is more aggressive advance curve than the 300 CDI.
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Old 06-16-2019, 02:03 PM
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I thought I'd had a look and the cdi part number was static for quite a range.
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'07 EC300
496 CPI Cheetah RZ/RGV hybrid
675 Street Triple R
RS125 framed MB100 racer
Stinger T125 Suzuki
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Old 06-16-2019, 03:09 PM
Jim_C Jim_C is offline
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Quote:
Originally Posted by Zman View Post
The 300 is a bit easier to ride as you can ride it a gear higher and lug the engine. The 250 and 300 share the same bottom ends. The CDI is different and you can run the 250CDI on a 300 but the 250 CDI is more aggressive advance curve than the 300 CDI.
Thanks Zman. That's the info I was looking for. The 250 CDI on the 300 jug might just be the combination I'm looking for.
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Old 06-16-2019, 03:11 PM
Jim_C Jim_C is offline
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Quote:
Originally Posted by fred99999au View Post
I'm more interested in the contents of your camelbak?
I'm 57 and ride/race the 50+ class.
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Old 06-16-2019, 03:13 PM
Jim_C Jim_C is offline
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Quote:
Originally Posted by (F5) View Post
I thought I'd had a look and the cdi part number was static for quite a range.
What do you mean "static for quite a range"?
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Old 06-16-2019, 06:27 PM
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Every one needs 1-250 and 1-300
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Old 06-16-2019, 08:15 PM
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Sorry bad choice of words. When I was looking into whether I was up the a cdi I thought I'd seen same part number for 250 and 300 for years and years. I've lost the bit of paper so would take research of parts books again to confirm..
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496 CPI Cheetah RZ/RGV hybrid
675 Street Triple R
RS125 framed MB100 racer
Stinger T125 Suzuki
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