Posted by big hunter on June 21, 2009 at 09:23:32 from (167.102.156.51):
I took a head to the machine shop to have it worked over and the new parts installed. It orignally had 30 degree valves and 45 degree valves (can't remember which was intake and exhaust off the top of my head) I bought all the new parts in a kit online. The manual for the tractor calls for the 45 degree valves to be changed to 30 degrees. The kit that I bought list all the valves as 30 degree, which would be correct. The machine shop (which has a good reputation) installed the new valves and new seats but ground the 6 valves that were 30 degrees to 45 degrees. When I dropped off the head the owner said he had all the specs. in computer disks. When I picked up the head I asked if there was any problems and the guy said that some of the valves didn't have the right angle so they ground them to 45 degrees. I said well the shop manual says that the service valves are to be all 30 degrees. He said, it doesn't matter what the manual says, thats what was in there and thats what we put back. (they had a pretty stiff attitude)
Anyhow, will the integrity of the valves compremised by them grinding that 15 degrees off. Should I just go on my way and not worry about it. If something were to happen, I would assume that the 12 month warranty would be void.
The main question is...will the integrity of the valves be compremised?
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