New Valves and still no clearance. Crf250r

Sethrich89
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Clayton, NC, USA
Sethrich89
Sorry if I'm beating a dead horse here. Hopefully this will also help others and clear things up.
I have a 2004 crf250r I bought that wouldnt start.

I know these crf250r bikes have head problems. But many forums and articles said I would just need new SS valves and new springs. It seems they have been worked on before. The cam was backwards 180°.

I bought pro-x valves and springs and still have no clearance on the smallest shims.
I even feel like I'm pressing down on the springs when I'm putting in the cam so it's gotta be way way off. I had my machinist take off 10 thousands off the end of the valve stems and it had no effect.

Will new seats fix this problem? I dont really wanna buy a new head but I guess I will if thats what's needed.
If so, can I use my existing exaust valves and springs so all I would need is the head with seats already installed.
Thanks in advance.
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jaredkeller96
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Huntersville, NC, USA
jaredkeller96 10/30/2020 8:04pm
10/30/2020 8:04pm
Sethrich89 wrote:
Sorry if I'm beating a dead horse here. Hopefully this will also help others and clear things up. I have a 2004 crf250r I bought that...
Sorry if I'm beating a dead horse here. Hopefully this will also help others and clear things up.
I have a 2004 crf250r I bought that wouldnt start.

I know these crf250r bikes have head problems. But many forums and articles said I would just need new SS valves and new springs. It seems they have been worked on before. The cam was backwards 180°.

I bought pro-x valves and springs and still have no clearance on the smallest shims.
I even feel like I'm pressing down on the springs when I'm putting in the cam so it's gotta be way way off. I had my machinist take off 10 thousands off the end of the valve stems and it had no effect.

Will new seats fix this problem? I dont really wanna buy a new head but I guess I will if thats what's needed.
If so, can I use my existing exaust valves and springs so all I would need is the head with seats already installed.
Thanks in advance.
You need new seats...theres a reason the old valves went bad..send it somewhere and get some copper seats..waisting money getting new valves if you aren't going to do valve seats
kb228
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kb228 10/31/2020 5:41am
10/31/2020 5:41am
Sethrich89 wrote:
Sorry if I'm beating a dead horse here. Hopefully this will also help others and clear things up. I have a 2004 crf250r I bought that...
Sorry if I'm beating a dead horse here. Hopefully this will also help others and clear things up.
I have a 2004 crf250r I bought that wouldnt start.

I know these crf250r bikes have head problems. But many forums and articles said I would just need new SS valves and new springs. It seems they have been worked on before. The cam was backwards 180°.

I bought pro-x valves and springs and still have no clearance on the smallest shims.
I even feel like I'm pressing down on the springs when I'm putting in the cam so it's gotta be way way off. I had my machinist take off 10 thousands off the end of the valve stems and it had no effect.

Will new seats fix this problem? I dont really wanna buy a new head but I guess I will if thats what's needed.
If so, can I use my existing exaust valves and springs so all I would need is the head with seats already installed.
Thanks in advance.
jaredkeller96 wrote:
You need new seats...theres a reason the old valves went bad..send it somewhere and get some copper seats..waisting money getting new valves if you aren't going...
You need new seats...theres a reason the old valves went bad..send it somewhere and get some copper seats..waisting money getting new valves if you aren't going to do valve seats
X2. You dont put new valves in an old head.
Sethrich89
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Sethrich89 10/31/2020 5:57am
10/31/2020 5:57am
Sethrich89 wrote:
Sorry if I'm beating a dead horse here. Hopefully this will also help others and clear things up. I have a 2004 crf250r I bought that...
Sorry if I'm beating a dead horse here. Hopefully this will also help others and clear things up.
I have a 2004 crf250r I bought that wouldnt start.

I know these crf250r bikes have head problems. But many forums and articles said I would just need new SS valves and new springs. It seems they have been worked on before. The cam was backwards 180°.

I bought pro-x valves and springs and still have no clearance on the smallest shims.
I even feel like I'm pressing down on the springs when I'm putting in the cam so it's gotta be way way off. I had my machinist take off 10 thousands off the end of the valve stems and it had no effect.

Will new seats fix this problem? I dont really wanna buy a new head but I guess I will if thats what's needed.
If so, can I use my existing exaust valves and springs so all I would need is the head with seats already installed.
Thanks in advance.
jaredkeller96 wrote:
You need new seats...theres a reason the old valves went bad..send it somewhere and get some copper seats..waisting money getting new valves if you aren't going...
You need new seats...theres a reason the old valves went bad..send it somewhere and get some copper seats..waisting money getting new valves if you aren't going to do valve seats
Ok thanks. Just to make sure. These valves will work as long as they are for the bike and i get new seats.
I've heard others say if they change their intake they had to change the exaust as well.
But now I cant find anything else on that. And I couldn't find a complete set from KW. Plus my exaust are fine.
Also who should I send it to?
Sethrich89
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Sethrich89 10/31/2020 6:01am
10/31/2020 6:01am
Sethrich89 wrote:
Sorry if I'm beating a dead horse here. Hopefully this will also help others and clear things up. I have a 2004 crf250r I bought that...
Sorry if I'm beating a dead horse here. Hopefully this will also help others and clear things up.
I have a 2004 crf250r I bought that wouldnt start.

I know these crf250r bikes have head problems. But many forums and articles said I would just need new SS valves and new springs. It seems they have been worked on before. The cam was backwards 180°.

I bought pro-x valves and springs and still have no clearance on the smallest shims.
I even feel like I'm pressing down on the springs when I'm putting in the cam so it's gotta be way way off. I had my machinist take off 10 thousands off the end of the valve stems and it had no effect.

Will new seats fix this problem? I dont really wanna buy a new head but I guess I will if thats what's needed.
If so, can I use my existing exaust valves and springs so all I would need is the head with seats already installed.
Thanks in advance.
jaredkeller96 wrote:
You need new seats...theres a reason the old valves went bad..send it somewhere and get some copper seats..waisting money getting new valves if you aren't going...
You need new seats...theres a reason the old valves went bad..send it somewhere and get some copper seats..waisting money getting new valves if you aren't going to do valve seats
I meant to reply to you. The other rich guy can go the fuck on with that shit.
I just Googled what he said and all i got was: "how to install new valves", "how to lap your new valves"... etc lol.

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walent215
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walent215 10/31/2020 6:51am
10/31/2020 6:51am
Sethrich89 wrote:
Sorry if I'm beating a dead horse here. Hopefully this will also help others and clear things up. I have a 2004 crf250r I bought that...
Sorry if I'm beating a dead horse here. Hopefully this will also help others and clear things up.
I have a 2004 crf250r I bought that wouldnt start.

I know these crf250r bikes have head problems. But many forums and articles said I would just need new SS valves and new springs. It seems they have been worked on before. The cam was backwards 180°.

I bought pro-x valves and springs and still have no clearance on the smallest shims.
I even feel like I'm pressing down on the springs when I'm putting in the cam so it's gotta be way way off. I had my machinist take off 10 thousands off the end of the valve stems and it had no effect.

Will new seats fix this problem? I dont really wanna buy a new head but I guess I will if thats what's needed.
If so, can I use my existing exaust valves and springs so all I would need is the head with seats already installed.
Thanks in advance.
jaredkeller96 wrote:
You need new seats...theres a reason the old valves went bad..send it somewhere and get some copper seats..waisting money getting new valves if you aren't going...
You need new seats...theres a reason the old valves went bad..send it somewhere and get some copper seats..waisting money getting new valves if you aren't going to do valve seats
Sethrich89 wrote:
I meant to reply to you. The other rich guy can go the fuck on with that shit. I just Googled what he said and all...
I meant to reply to you. The other rich guy can go the fuck on with that shit.
I just Googled what he said and all i got was: "how to install new valves", "how to lap your new valves"... etc lol.
$280 shipped for a new Cylinder Works head, if interested pm me.
Tomok
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Epping, NH, USA
Tomok 11/1/2020 7:11am
11/1/2020 7:11am
I cut it twice and it's still too short.Sad
Sethrich89
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Sethrich89 11/1/2020 11:25am
11/1/2020 11:25am
Tomok wrote:
I cut it twice and it's still too short.Sad
Cut what twice and what's too short?
krgperformance
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Sterling Heights, MI, USA
krgperformance 11/2/2020 9:45am
11/2/2020 9:45am
KRG PERFORMANCE can replace the valve seats 80.00 a hole for copper seat
Sethrich89
Profile picture for user Sethrich89
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Clayton, NC, USA
Sethrich89 11/9/2020 6:24pm
11/9/2020 6:24pm
krgperformance wrote:
KRG PERFORMANCE can replace the valve seats 80.00 a hole for copper seat
Thanks. I think I'm just gonna get that new head from CW.

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