[michiganman]

does anyone have a 1987 trx250x they are parting out or just have some spar top end parts? My intake valves are leeking and my cam has flat spots and the rockers have bad wear spots. does anyone have a complete head. As far as the leaking valve I found it was leaking by pouring gas into the intake and it slowly leaked past the valve

 

[TRX2fiveO]

the valves are cheap bro I screwed up a ported head because I used old valves... buy new valves. I have a couple of cams if I can find them they are stock though. adn I may have a set of Rockers too. Pm me with an offer and I will see what I can do.

 

[Billy250X]

well thats nice to offer moose.I never part with anything.lol

 

[michiganman]

wouldn't i most likely need the valve seat reconditioned

 

[Helmut]

If you're going to get used parts, I would try to find the whole head, valves and all.

 

[TRX2fiveO]

If you're going to get used parts, I would try to find the whole head, valves and all.

Yeah I went that route look at what it got me....LMAO
When you say leaking do you mean they leak oil and it smokes some or do you mean leaking Compression?

 

[Helmut]

If you're going to get used parts, I would try to find the whole head, valves and all.

Yeah I went that route look at what it got me....LMAO
When you say leaking do you mean they leak oil and it smokes some or do you mean leaking Compression?

Yeah, but you removed and replaced the valves. Chances are if you buy the head with the valves already installed, it will be fine. I've done this many times and I've never had a problem.

Moose, how did you remove your valve cotters? I remember that you said that you didn't use a spring compressor to put them back in. You didn't, by chance, put an old socket on the top of them and hit it with a hammer, did you? If you did, you might have damaged your valves when you did that, if your head was sitting on something.

 

[TRX2fiveO]

If you're going to get used parts, I would try to find the whole head, valves and all.

Yeah I went that route look at what it got me....LMAO
When you say leaking do you mean they leak oil and it smokes some or do you mean leaking Compression?

Yeah, but you removed and replaced the valves. Chances are if you buy the head with the valves already installed, it will be fine. I've done this many times and I've never had a problem.

Moose, how did you remove your valve cotters? I remember that you said that you didn't use a spring compressor to put them back in. You didn't, by chance, put an old socket on the top of them and hit it with a hammer, did you? If you did, you might have damaged your valves when you did that, if your head was sitting on something.

OH NO no no no Never would I do that to such a weak valve system (compared to autos) I took a rubber grommet like you would put in a swaybar link placed it underneath on the valve face and i took my thumbs and pressed the springs down and took my index finger and raked the Keepers out, I marked the valves and their location I taped the springs, keepers and valves together and stuck them in a piece of cardboard. I reinstalled them the same way I do this all the time at my shop at work. It was just a bum valve and I overlooked the deterioration on one side. The head I used was complete it was from my other engine I've got stashed in a box in the shed.

 

[Helmut]

Yeah I went that route look at what it got me....LMAO
When you say leaking do you mean they leak oil and it smokes some or do you mean leaking Compression?

Yeah, but you removed and replaced the valves. Chances are if you buy the head with the valves already installed, it will be fine. I've done this many times and I've never had a problem.

Moose, how did you remove your valve cotters? I remember that you said that you didn't use a spring compressor to put them back in. You didn't, by chance, put an old socket on the top of them and hit it with a hammer, did you? If you did, you might have damaged your valves when you did that, if your head was sitting on something.

OH NO no no no Never would I do that the such a weak valve system I took a rubber grommet like you would put in a swaybar link underneath on the valve face and i took my thumbs and pressed the prings down and took my index finger and raked te Keepers out, I marked the valves and their location I taped the springs, keepers and valves together and stuck them in a piece of cardboard. I reinstalled them the same way I do this all the time at my shop at work. It was just a bum valve and I overlooked the deterioration on one side.

Yeah, it probably just had a stress crack and was ready to go anyway, then.

 

[TRX2fiveO]

I know you can imagine how pissed at myself I was, and still am. I was trying to build a budget head and cheaped out on the most important part of the head...lol I can promise you I won't do that again.

 

[Helmut]

By the way, Snapon makes a valve spring compressor tool that works like hitting them with a socket and hammer. You sit the tool on top of the valve and hit the tool with a hammer to remove the cotters. To put them back on, you put some grease up in the tool and stick the cotters to it and sit it back on top of the valve and just hit it with the hammer, again. It works real good too. The tool will work on any valve. It don't matter if it's on a car or ATV and you don't have to remove the head. It won't work on small engines, like lawnmowers though, because you can't get to the top of the valves on most of them.

 

[raciea]

There is a guy on ebay that sells both intake and both exhaust for $50. They are Shindy valves. I have used them with no problems whatsoever. The valve seats are pretty tough on the heads. Most the time it will wear the valve before it will wear the seat. As long as your guides are decent, just buy a new set of valves and hand lap them. You can get the lapping compound at autozone or advance.