my valves stuck open and the piston struck them, effectively bending them (the shaft of the valve, not the plate)

can i use a knife and/or sandpaper to clean the gunk from the old valve seats and just replace the valves or do i need to replace the whole head?

unlikely i know, but can i just pull the old valves and use a hammer to bend them back straight? i know the timing and seats have to be perfect, but would i be able to bend the valve close enough to oem specs to be able to run decently?

this is on a 1987 trx 200sx (fourtrax)

 

Neither. Just buy new valves and have a shop do a nice 3 angle seat grind on the seats and assemble. (might want to replace the piston also; or have a good long look at it.

Sorry, but that can't be done, your going to have to buy new valves.

 

yea hes rite and you sound like the cheap type and liek you would try to seat them yourself and you cant do that you need a machine shop or else it will happen again

 

yes, i have no money. now that we've pointed that out....


would it be cheaper to take it to a machine shop and have them do the work or buy a new head? a new head is about $200. i am already replacing the piston.

thanks for the help so far [img]i/expressions/face-icon-small-smile.gif[/img]

 

Just buy new valves and have the machine shop do the seat work. With work, valves, gaskets, and maybe a few beers, you will be into it for under $100 bucks. And with the $100 you saved, you will be able to buy two gallons of gas. [img]i/expressions/face-icon-small-wink.gif[/img][img]i/expressions/face-icon-small-wink.gif[/img][img]i/expressions/face-icon-small-wink.gif[/img]

 

haha lol[img]i/expressions/face-icon-small-happy.gif[/img]..damn those gas prices[img]i/expressions/face-icon-small-disgusted.gif[/img]