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CW2 Ryno 
Bronze Level
Joined: 17 Aug 2020
Location: Nebraska
Points: 55
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 Topic: Would ya use this?
Posted: 12 Jul 2023 at 11:03pm |
Purchased reman head, not impressed with the quality working with the supplier on remediation. I have concerns about the seat with casting missing around it plus all the others that are peened in. What do you folks think? 50C83635-60D6-4031-9F8E-AF819DD9A8BC.jpeg46FBACE2-735C-4FAA-9F02-47282F87389A.jpegD5C5B6F4-BFE4-4821-AA4B-EEF6D37EA2F6.jpeg
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DrAllis
Orange Level Access
Joined: 12 Sep 2009
Points: 21935
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Posted: 13 Jul 2023 at 6:21am |
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Exhaust seat?? My luck would be it wouldn't last a day in the field.
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CW2 Ryno
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Joined: 17 Aug 2020
Location: Nebraska
Points: 55
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Posted: 13 Jul 2023 at 6:29am |
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Thanks! That was my opinion and gripe with the supplier about.
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PaulB
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Joined: 12 Sep 2009
Location: Rocky Ridge Md
Points: 5112
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Posted: 13 Jul 2023 at 6:35am |
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I would have to agree that would not be a good head to use. The rebuilder has already center punched around the seats. That tells me they already knew there is a problem.
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If it was fun to pull in LOW gear, I could have a John Deere.
Real pullers don't have speed limits.
If you can't make it GO... make it SHINY
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HudCo
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Joined: 29 Jan 2013
Location: Plymouth Utah
Points: 3916
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Posted: 13 Jul 2023 at 9:52pm |
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that would be sent right back and with some storng words to go with it
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JC-WI
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Joined: 11 Sep 2009
Location: wisconsin
Points: 34340
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Posted: 13 Jul 2023 at 10:22pm |
Those
inserts need to be snug... as in putting them in dry ice or freezer and the
head warmed up and be a snug fit while pressing them in quick... and that
6 punched seat, the head should have been built up and cut down before putting that
seat in. Sorry, but thats shoddy work.
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He who says there is no evil has already deceived himself
The truth is the truth, sugar coated or not. Trawler II says, "Remember that."
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Codger
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Joined: 23 Dec 2020
Location: Utopia
Points: 2458
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Posted: 13 Jul 2023 at 10:25pm |
That head for the most part is scrap with the "staking" of the exhaust seats into place. In automobiles this creates hot spots which usually show up as cracks through the seat and non sealing valves as a result.
The head is salvageable if a rare item. The existing seats and surrounding area would need "cored", and another cast iron insert shrink fitted into it. Not all automotive machine shops have that capacity but one that builds high performance, ($$$) engines may. I can't say these days for sure. For a short time in the late 1970's I worked a shop that could do that work and you'd never have a problem with it. Valve recession was a big thing in those days as unleaded gasoline was not in full force yet, and regular leaded was still routinely available, but it was rapidly becoming understood what the lack of lead in gasoline was doing to non hardened valve seats.
Edited by Codger - 13 Jul 2023 at 10:26pm
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That's All Folks!
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KJCHRIS
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Joined: 21 Dec 2015
Location: WC Iowa
Points: 960
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Posted: 13 Jul 2023 at 11:12pm |
NO!, If I put that on it'd have a hard time surviving the first day. The seat in pic #1 appears to be out of round, I'm not sure they'd stay staked in to get those seats trued up. Use your best judgement it's your project. Sent a head that'd dropped 2 seats / holes out of round over to Nevada, IA to get redone. It came back couldn't tell which ones had dropped, 10 years later that engine was still going. |
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AC 200, CAH, AC185D bareback, AC 180D bareback, D17 III, WF. D17 Blackbar grill, NF. D15 SFW. Case 1175 CAH, Bobcat 543B,
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farmtoybuilder
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Joined: 11 Sep 2009
Location: Dresden,Ohio
Points: 1457
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Posted: 14 Jul 2023 at 8:10am |
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Scrap! Can't believe they would send it to someone. Get another one.
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5 different TT-10's,5 TT-18's Terra Tigers,B-10,2 B-207's,B-110,2 B-112's,HB-112,B-210,B-212,HB212,2 Scamp's & Homilite T-10. Still hunting NICE HB-112 & anything Terra Tiger & Trailers for them.
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