stevebus Posted March 16, 2022 Share Posted March 16, 2022 Whilst I understand that a cracked head is a cracked head, I have two 200tdi heads here both with small cracks between the injector and heater plug, nothing between the valves. I've been assured that they can be welded but by the man who's doing the job, is this viable or basically are they scrap. All the best Quote Link to comment Share on other sites More sharing options...
hurbie Posted March 16, 2022 Share Posted March 16, 2022 being scarce as they are , i would try welding Quote Link to comment Share on other sites More sharing options...
stevebus Posted March 17, 2022 Author Share Posted March 17, 2022 Thanks Herbie, I'll give it a go Quote Link to comment Share on other sites More sharing options...
stevebus Posted March 17, 2022 Author Share Posted March 17, 2022 On the same subject of 200tdi cylinder heads does anyone know anything about HRC 2123, it's a part number for a cylinder head saying it's for a 200 but can't find bugger all about it, can anyone help Quote Link to comment Share on other sites More sharing options...
L19MUD Posted March 17, 2022 Share Posted March 17, 2022 13 minutes ago, stevebus said: On the same subject of 200tdi cylinder heads does anyone know anything about HRC 2123, it's a part number for a cylinder head saying it's for a 200 but can't find bugger all about it, can anyone help https://www.aulro.com/afvb/technical-chatter/150854-200tdi-cylinder-head-casting-revisions.html This has some info Quote Link to comment Share on other sites More sharing options...
hurbie Posted March 17, 2022 Share Posted March 17, 2022 58 minutes ago, stevebus said: On the same subject of 200tdi cylinder heads does anyone know anything about HRC 2123, it's a part number for a cylinder head saying it's for a 200 but can't find bugger all about it, can anyone help it's not a partnumber , but a casting number , so no use finding the part (except if someone posted a picture were the casting number is visible) 2 Quote Link to comment Share on other sites More sharing options...
western Posted March 17, 2022 Share Posted March 17, 2022 1 hour ago, stevebus said: On the same subject of 200tdi cylinder heads does anyone know anything about HRC 2123, it's a part number for a cylinder head saying it's for a 200 but can't find bugger all about it, can anyone help 200Tdi head part number for a Defender spec engine is RTC6896 taken from the 110 parts book on Retroanaconda.com Quote Link to comment Share on other sites More sharing options...
stevebus Posted March 17, 2022 Author Share Posted March 17, 2022 Ok, the two I have and the one in my wagon is hrc2281 does that ring any bells, cos now I'm even more confused, hope your well, and thanks for getting back once again Quote Link to comment Share on other sites More sharing options...
stevebus Posted March 17, 2022 Author Share Posted March 17, 2022 So looking at what Hurbie put, is hrc2281 a casting number aswell Quote Link to comment Share on other sites More sharing options...
L19MUD Posted March 17, 2022 Share Posted March 17, 2022 HRC 2123 and HRC 2281 are casting numbers. RTC6896 is a part number Quote Link to comment Share on other sites More sharing options...
stevebus Posted March 17, 2022 Author Share Posted March 17, 2022 Thanks L19, nice one Quote Link to comment Share on other sites More sharing options...
western Posted March 17, 2022 Share Posted March 17, 2022 My 200tdi head has HRC2281 on it, you can see it in this photo, taken during the rebuild nearly 4 years ago, engine was bought brand new as. Factory repower kit in July 1994. 1 Quote Link to comment Share on other sites More sharing options...
monkie Posted March 18, 2022 Share Posted March 18, 2022 On 3/17/2022 at 10:53 AM, western said: 200Tdi head part number for a Defender spec engine is RTC6896 taken from the 110 parts book on Retroanaconda.com Are the disco and defender spec 200tdi heads different in any way? I always considered them as interchangeable Quote Link to comment Share on other sites More sharing options...
stevebus Posted March 19, 2022 Author Share Posted March 19, 2022 I don't know Monkie, but give me a week or so and I should be able to tell you, a mate of mine, "the pratt" just boiled his defender 200 he's on the case at the moment dismantling it between working and no workshop, when he's finally got it off he wanted to offer it up to one of mine to check, it does have the hrc2281 number on it so we're assuming it is Quote Link to comment Share on other sites More sharing options...
western Posted March 19, 2022 Share Posted March 19, 2022 Can't see any reason why the Disco & Defender 2000Tdi heads should be different, it's the main folds, turbo, injection pump & injectors that make them different for each vehicle. Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted March 19, 2022 Share Posted March 19, 2022 The heads are the same. Mo Quote Link to comment Share on other sites More sharing options...
stevebus Posted March 19, 2022 Author Share Posted March 19, 2022 Tell you what I do know, which I think L19 brought up on a link he sent me is the hrc2123 water channels as opposed to the hrc2281 channels are to be honest alarmingly tiny, I bought a 2123 head today of a fella, no cracks anywhere but I compared it with the two 2281 heads I have and your talking maybe a 10mm hole on the 2281 and a 3mm hole on the 2123 head, and also a lot of corrosion and pitting around the 3mm hole I'm assuming where the gasket had the 10mm hole, I'm lucky in geography I'm close to Turner engineering so sometime next week they are going to get an hour of me if she doesn't tell me to F&€× off in the meantime, all the best guys, have good weekend 1 Quote Link to comment Share on other sites More sharing options...
monkie Posted March 19, 2022 Share Posted March 19, 2022 9 hours ago, western said: Can't see any reason why the Disco & Defender 2000Tdi heads should be different, it's the main folds, turbo, injection pump & injectors that make them different for each vehicle. That's what I had always assumed. It was just the talk of different numbers on here made me remember that I had a few gaskets left over in my 200tdi top end gasket set. This made me wonder of there are some subtle differences such as the thermostat housing maybe? Quote Link to comment Share on other sites More sharing options...
Snagger Posted March 20, 2022 Share Posted March 20, 2022 17 hours ago, monkie said: That's what I had always assumed. It was just the talk of different numbers on here made me remember that I had a few gaskets left over in my 200tdi top end gasket set. This made me wonder of there are some subtle differences such as the thermostat housing maybe? I don’t think so. I have a Discovery engine (Defender manifolds) and it appears to have the same thermostat housing. I think the temperature sender for the gauge may be the key - it’s in the thermostat housing on the Discovery engine, but I suspect it might be in the head of the Defender engine, like on the 12 and 19J. Edit: the thermostat housing bottoms are different because of the differing water pump positions, but they should be interchangeable as they are bolted to the front of the head. The top of the housing is the same between vehicles, differing only for the tappings if you have AC. Quote Link to comment Share on other sites More sharing options...
western Posted March 20, 2022 Share Posted March 20, 2022 Temp sender on a Defender spec 200tdi is on the the stat housing & a 5/8unf thread, Quote Link to comment Share on other sites More sharing options...
Mo Murphy Posted March 20, 2022 Share Posted March 20, 2022 … the thermostat housings are different between the 2 and IIRC the discovery thermostat housing fouls the Defender timing case. HTH Mo Quote Link to comment Share on other sites More sharing options...
stevebus Posted March 20, 2022 Author Share Posted March 20, 2022 23 hours ago, monkie said: That's what I had always assumed. It was just the talk of different numbers on here made me remember that I had a few gaskets left over in my 200tdi top end gasket set. This made me wonder of there are some subtle differences such as the thermostat housing maybe? Sorry I haven't got back sooner, I've been grafting today, there's a massive difference in the thermostat housing, same gasket face, and I did have a quick check and the 2281 one does fit, and if I look down the 3mm waterway holes I was on about it almost looks like they're only 5 to 6 mm deep and it seems like it might open up underneath, my trip to Turner's I'm going to ask if they cant be drilled out, (would also get rid of that horrible pitting I was on about) cos on the otherside they are 10mm holes, so somewhere in the casting they change diameter, I'll take some photos tomorrow and post them to you all, I'll keep you posted Quote Link to comment Share on other sites More sharing options...
stevebus Posted March 20, 2022 Author Share Posted March 20, 2022 5 hours ago, western said: Temp sender on a Defender spec 200tdi is on the the stat housing & a 5/8unf thread, Yeah it is, very different to what I have on mine 1 Quote Link to comment Share on other sites More sharing options...
stevebus Posted March 22, 2022 Author Share Posted March 22, 2022 I don't know how many of you were interested but here's those photos I promised, hopefully they are clear enough the cotton bud and sim card bit are just to put it all in to perspective and as you can see the thermostat housings are massively different 1 Quote Link to comment Share on other sites More sharing options...
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