DickL or anybody else

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?

thank you very much

Seems like nobody really had the specs written in stone.Why anybody would grind a brand new valve is beyond me.If there is a margin left on the valves it will not be a problem.

I don't know WHY he didn't tell us what the head is from... if a diesel, all the mucking around likely would have the valves so "high" in the head compression ratio will be reduced, leading to harder starting.

B Hunter,

Not to be insulting , but the first mistake
is to not to buy the parts from the shop that is
doing the work ,that is a good way to ruffle the
feathers . Second thing is ,if the seats you
bought were all 45 deg ,then he didn't have much
choice but to make the valves match. You can
regrind the angle on the seat , but that lowers
the valve into the head and defeats the reason
for replacing the seats.
All said , machine shop should do the parts
ordering after disassembly , that way you get
the right parts .

george

George, so your saying that I should expect to get screwed if I don't buy parts from the machine shop...thats just not right. 2nd they suppied the seats, and like I said they told me they had all the specs. for the engine. 3rd like I said, I had the right parts. 4th you didn't even bother to answer my question.

Good point, but I'm guessing it's for a little Allis, a B, C or CA, since he directed the question at DickL. DickL is probably the most knowledgeable feller on these forums WRT the little Allis engines.

I did not answer your question , because from
here I cannot see how much margin is left.

Most machine shops can supply parts as cheap
as you can buy on line.

The other comment about being screwed ,, well
you don't take your eggs to Mc Donalds to have
them cook the eggs for you.

There is not enough money in doing machine
shop labor alone , if you can't sell parts ,
you might as well close the door. That is why
machine shops are disappearing at an alarming
rate.

george

Yes and there is really so much more to it than that;how much stem sticking up affecting spring tension,rocker arm geometry etc.Sometimes a simple answer isnt really the whole big picture.