Does anyone know for sure if 250x rocker arms will work in a 350x?
Got The Holeshot
Arm chair racerJust too addicted
Does anyone know for sure if 250x rocker arms will work in a 350x?
Trikes: Cagiva 200, 85? Tiger 250,(2)84 200x's , (3)86 200x's, 87 200x, (5)85 350x's, (2)86 350x's, (2)85 250r's, 86 Tecate, (3) 85 250sx's Restoring: 83 200x, 86 250sx. Too many utility trikes to list.
Power User
Roostin Away
350x is a 4 valve head. Each rocker arm actuates TWO valves. The 250x (information that I can find online) is a 2 valve head. Nope, not gonna work. What information do you have that says this would work, or why do you think this was possible?
- Frank
1984 200ES Big Red
1985 350X (x2)
1986 350X
1986 250SX
1984 Auto-X
1984 ATC70
1985 ATC70
Got The Holeshot
Arm chair racerJust too addicted
No, the 250x is a 4 valve head. The rocker arms look identical while still installed in their respective covers. I haven't pulled them out yet. Thinking the shaft size might be different or something. They have a different oe part number for some reason. The 250x exhaust rocker arm even has the boss for the decomp like the 350x even tho the 250x dosn't have a decomp.
Trikes: Cagiva 200, 85? Tiger 250,(2)84 200x's , (3)86 200x's, 87 200x, (5)85 350x's, (2)86 350x's, (2)85 250r's, 86 Tecate, (3) 85 250sx's Restoring: 83 200x, 86 250sx. Too many utility trikes to list.
Power User
Roostin Away
Ok, I just googled the Honda 250x and TODAY it's a 2 valve head. (my reference: https://powersports.honda.com/atv/sport/trx250x) So evidently in the past it was a 4 valve head. For my info, what year 250x is it that you have?
Sounds like it might be a match then based on your observation, especially since the tab for the decomp lever is there even though the 250x doesn't use it. Good luck with the swap!
- Frank
1984 200ES Big Red
1985 350X (x2)
1986 350X
1986 250SX
1984 Auto-X
1984 ATC70
1985 ATC70
At The Back Of The Pack
Arm chair racerAt the back of the pack
You are referring to the TRX250X or TRX250EX which was derived from the honda Recon 250 which in no way is related to the 350X engine design. What the original poster is referencing is the TRX250X that Honda sold from 1987-1992. Very similar engine design to the ATc350X. However I can not answer the original posters question about fitment.Originally Posted by wonderboy
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Grizzly700
Got The Holeshot
Arm chair racerJust too addicted
Sorry I didn't know that Honda had renamed the little 250ex to 250x. I have the 87-92 flavor.
Trikes: Cagiva 200, 85? Tiger 250,(2)84 200x's , (3)86 200x's, 87 200x, (5)85 350x's, (2)86 350x's, (2)85 250r's, 86 Tecate, (3) 85 250sx's Restoring: 83 200x, 86 250sx. Too many utility trikes to list.
Power User
The day begins with 3WW
the 350D from a quad is the same rockers if I recall.
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