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Old 01-04-2017, 02:09 PM   #1
photodude
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Default Opinions on Valve Job

as title suggests.. I'm not going to go into any detail on this at the moment, but just take a look at the photos and give opinions. B25 heads from an EJ257 with 12000 miles on it after rebuild and valve job.

https://goo.gl/photos/tuuTA5DGWZAr1c418
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Old 01-04-2017, 03:27 PM   #2
2milehi
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The intake seats look fine. The exhaust seats looks beat up for 12k miles. You can get a lapping compound kit and hand lap the valves/seats yourself.

What was the valve lash on the heads?
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Old 01-04-2017, 03:33 PM   #3
photodude
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Not sure. The machine shop that did it is no longer talking to me.
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Old 01-04-2017, 03:51 PM   #4
rtv900
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you got all kinds of garbage built up on them already.

Is that why they aren't talking to you? Because you had them build a motor and then ruined it and then demanded they give you a free one?
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Old 01-04-2017, 04:06 PM   #5
photodude
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no.. because they built it, folded an oil ring in Cyl4 in the process, blamed the damage on me using the wrong oil. When I called them about going through 1 quart of oil every 200 miles they told me to just keep driving it. After I completed a compression test and leakdown on the thing and determined that the problem was the rings and called them, they told me to keep driving it.. 12000 miles later I was fed up and took it back to them. I bought case halves, new rings, new bearings and they built it again and it failed again.

I'm not some idiot that doesn't know what they are doing.

https://goo.gl/photos/y2WDnFmCuTVMNzS3A
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Old 01-04-2017, 04:42 PM   #6
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Did you ever get the cylinder/piston dimensions from the shop (Topic: using oil)?

https://forums.nasioc.com/forums/sho....php?t=2768288

You are going to have to cut your losses with this shop. They don't seem interested in addressing the problem with your engine (and their build).
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Old 01-04-2017, 05:12 PM   #7
rtv900
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a quart every 200 miles and it took you 12,000 miles to get fed up and then had them do more work?

ok, well what's the back story on why you pulled the heads again?
What do you expect anyone to tell you based on a pic of a head with a dirty valve? Nobody can tell from the pic if there is any real issue with the valve job or if it's just crudded up with carbon and now won't seat.
And unfortunately carbon build up isn't their fault.

Not sure what you're looking for given zero information.
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Old 01-04-2017, 05:15 PM   #8
photodude
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no, but I did have a different shop measure everything and have had another shop look at photos and have both determined it was a effed up machine job. I'm working on a case now and am looking at taking them to small claims. It will be very hard to prove on the shortblock build, but they cant argue about a ****ty valve job.

measurements Pistons - same size +- .0002
block - cyl 1 - .0022 - .0025
cyl 3 - .0013 - .0026
cyl 2 - .0008 - .0025
cyl 4 - .0013 - .002 - 003
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Old 01-04-2017, 05:23 PM   #9
photodude
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After that build they blamed the issues on me and rebuilt the motor. I had to buy case halves, rings, and bearings. They ate the labor.. That engine lasted 1200 miles and spun a bearing while being full of oil that they recommended. Clearances were not correct obviously, but I cannot prove it now. I pulled the engine again and let a different shop look at it and they determined the failure and shook their heads at the machine work.
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Old 01-04-2017, 08:22 PM   #10
cboggess
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That valve looks to have WAY more than 12k on it, and I'm not too impressed with the seat either.

The ONLY way that I can think it would get that beat in 12K is if you're running some CRAZY HIGH spring rates.
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Old 01-04-2017, 09:02 PM   #11
Shiftace420
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They did not do a valve job. They did a valve lapping and maybe seals at the MOST. Or nothing, same thing really.

Those valves were not touched by anything 12000 miles ago. Period.

I have cut better looking valves on my drill press. Not kidding

The valve on the right had about 145K on it. Yours looks like it has seen more like 200K.


Last edited by Shiftace420; 01-04-2017 at 09:39 PM.
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Old 01-04-2017, 10:16 PM   #12
photodude
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that is my point. I was charged and paid for a 3 angle valve job.
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