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Total 28 documents matching your query.

1. Hardened Valve Seats (score: 1): Author: "David Macedonia" <david.macedonia@verizon.net>; Date: Wed, 7 Jan 2004 21:54:43 -0500; While we're on the topic of hardened valve seats, can someone tell me how necessary they really are? When I had the machine shop overhaul the block back in '97, the owner insisted that hardened seat; /html/mgs/2004-01/msg00081.html (7,981 bytes)
2. Re: Hardened Valve Seats (score: 1): Author: "Paul Hunt $T$" <paul.hunt1@blueyonder.co.uk>; Date: Thu, 8 Jan 2004 09:16:35 -0000; When leaded when from Europe a few years ago there was much discussion on this topic. One input, reputedly from BMW, was that if an engine had used leaded for at least 40k and not had new valves or r; /html/mgs/2004-01/msg00082.html (9,193 bytes)
3. RE: Hardened Valve Seats (score: 1): Author: Chuck Renner <crenner@dynalivery.com>; Date: Thu, 8 Jan 2004 11:53:59 -0600; Nor does a car used for regular driving. We've been without lead additives in the US for years, and went through the same kind of hand-wringing about it. The conventional wisdom of lead WRT valve se; /html/mgs/2004-01/msg00088.html (8,202 bytes)
4. Hardened Valve Seats (score: 1): Author: "Lawrie Alexander" <Lawrie@britcars.com>; Date: Thu, 8 Jan 2004 09:56:56 -0800; Having been in the business since 1976, I've seen the insides of a lot of engines. It has been my experience that valve seat recession and burnt valves are most often a problem from the use of unlea; /html/mgs/2004-01/msg00089.html (10,233 bytes)
5. RE: Hardened Valve Seats (score: 1): Author: "Dodd, Kelvin" <doddk@mossmotors.com>; Date: Thu, 8 Jan 2004 10:23:49 -0800; It's a good thing Lawrie posted before I did. His experience is worth listening to, my fatuous comment was going to be "I don't think you have to worry about valve recession if your engine stays on; /html/mgs/2004-01/msg00090.html (9,490 bytes)
6. RE: Hardened Valve Seats (score: 1): Author: jello@ida.net; Date: Thu, 8 Jan 2004 11:28:17 US/Mountain; Ok, I realize that I'mgoingt obe the anomoly here, but here goes. I have a '58 MGA. It has a 3 main B motor, and a 1500 head. When I bought it, it had been driven occaisionally, but not a lot since a; /html/mgs/2004-01/msg00091.html (9,289 bytes)
7. RE: Hardened Valve Seats (score: 1): Author: "Dodd, Kelvin" <doddk@mossmotors.com>; Date: Thu, 8 Jan 2004 10:50:23 -0800; The federal spec. heads for unleaded use had induction hardened seats that required a higher concentration of tin in the casting alloy. BL decided to go this way supposedly after nixing hardened sea; /html/mgs/2004-01/msg00092.html (8,793 bytes)
8. Re: Hardened Valve Seats (score: 1): Author: "Dave Wood" <dwood143@comcast.net>; Date: Thu, 8 Jan 2004 11:19:31 -0800; Did your source say what year engines this started? A BL mechanic told me I didn't have to worry about that with my 72 when they changed over to unleaded gas here in the States. However, I still put; /html/mgs/2004-01/msg00093.html (9,402 bytes)
9. RE: Hardened Valve Seats (score: 1): Author: "Dodd, Kelvin" <doddk@mossmotors.com>; Date: Thu, 8 Jan 2004 11:49:56 -0800; These would be engines fitted with catalytic converters. I can guarantee that a 1972 will have recession problems under normal daily use running straight unleaded fuel. It won't happen overnight, an; /html/mgs/2004-01/msg00094.html (9,121 bytes)
10. RE: Hardened Valve Seats (score: 1): Author: Dan DiBiase <d_dibiase@yahoo.com>; Date: Thu, 8 Jan 2004 13:17:00 -0800 (PST); My God, Kelvin, why??!! ;-) == Dan The Garden State '76 MGB Tourer - Driver - It's getting better all the time.... '65 MGB Tourer Project - Yep, still is.... '04 Audi A4 1.8T q MT-6 - quattro, baby!; /html/mgs/2004-01/msg00095.html (8,808 bytes)
11. Re: Hardened Valve Seats (score: 1): Author: Max Heim <mvheim@studiolimage.com>; Date: Thu, 08 Jan 2004 13:32:42 -0800; My motor is a BMC "Gold Seal" rebuild of unknown internal configuration. I found it in a 72 GT, sporting sidedraft Webers and headers. The parts broker stated that the previous owner claimed less th; /html/mgs/2004-01/msg00096.html (10,327 bytes)
12. Re: Hardened Valve Seats (score: 1): Author: "Rick Lindsay" <rolindsay@stoolhead.com>; Date: Thu, 8 Jan 2004 17:27:32 -0500; Dave, et al., I have had old cars (British and other) for years and have never used additives OR worried about valve seats. My general opinion is; Drive it as is, using the highest octane fuel avail; /html/mgs/2004-01/msg00097.html (9,238 bytes)
13. Re: Hardened Valve Seats (score: 1): Author: Rocky Frisco <rock@rocky-frisco.com>; Date: Thu, 08 Jan 2004 17:40:18 -0600; I have two more to match yours. I've built a number of Mini engines in the last seven years; none of them had hardened seats; none of them has showed any sign of recession, even though they were driv; /html/mgs/2004-01/msg00098.html (10,469 bytes)
14. Re: Hardened Valve Seats (score: 1): Author: "Paul Hunt $T$" <paul.hunt1@blueyonder.co.uk>; Date: Fri, 9 Jan 2004 09:29:59 -0000; Per head!? pounds.; /html/mgs/2004-01/msg00102.html (8,718 bytes)
15. Re: Hardened Valve Seats (score: 1): Author: "Paul Hunt $T$" <paul.hunt1@blueyonder.co.uk>; Date: Fri, 9 Jan 2004 09:31:43 -0000; The factory *did* fit heads which were tolerant of unleaded fuel on all cars originally fitted with a catalytic converter. 1975 model year on for California, 1976 model year on for the rest of USA, s; /html/mgs/2004-01/msg00103.html (8,900 bytes)
16. Re: Hardened Valve Seats (score: 1): Author: Hans Duinhoven <h.duinhoven@planet.nl>; Date: Fri, 09 Jan 2004 18:56:42 +0100; Hardened valve seats are needed when driving on LPG (Liquified Petrol Gas) Some MG's in the Dutch MGCC run on this nice fuel. Very cheep to run, clean for the engine and very environment friendly Che; /html/mgs/2004-01/msg00106.html (10,947 bytes)
17. Re: Hardened Valve Seats (score: 1): Author: WSpohn4@aol.com; Date: Sat, 10 Jan 2004 12:27:30 EST; If it has 'Webers' plural, it must be an alloy crossflow head, and would have hardened seats by definition. I don't see how it applies to the current discussion. Bill; /html/mgs/2004-01/msg00112.html (8,389 bytes)
18. Re: Hardened Valve Seats (score: 1): Author: MGBnutt@aol.com; Date: Sat, 10 Jan 2004 13:06:24 EST; Can't you put side-draft Webers on regular head? Thanks, donny v 1978 MGB I don't see how it applies to the current discussion. Bill; /html/mgs/2004-01/msg00113.html (8,221 bytes)
19. Re: Hardened Valve Seats (score: 1): Author: WSpohn4@aol.com; Date: Sat, 10 Jan 2004 13:10:17 EST; It's a bit hard to use more than one DCOE series on a head that just has 2 ports! And before some smart guy brings up the use of two DCOEs in 'split' configuration, I am aware of that, it is more com; /html/mgs/2004-01/msg00114.html (8,524 bytes)
20. Re: Hardened Valve Seats (score: 1): Author: Max Heim <mvheim@studiolimage.com>; Date: Sat, 10 Jan 2004 14:13:21 -0800; Are you saying that you cannot attach dual sidedraft Webers to a regular iron 1800 head? I seriously doubt that contention -- I can recall seeing that setup many years before the crossflow heads were; /html/mgs/2004-01/msg00118.html (8,999 bytes)

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