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GBW

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Everything posted by GBW

  1. GBW

    Timing pointer

    The sketch attached is taken from the BMC 1.5 diesel manual and shows a timing pointer, item 78, which looks the part. https://marinedieselbasics.com/wp-content/uploads/edd/BMC-1.5L-Workshop.pdf page A4. I will order it and report back. I have made one but, if the supplied part is already marked in degrees, it will save effort. Timing pointer .pdf
  2. GBW

    Timing pointer

    I posed this question on the MG Owners Club forum. I quote " the timing marks moved from underneath to pointing at the alternator, according to the books, changing in about 1968 with the 18GG engine." That sounds like a possible solution but it implies that pulleys I found on ebay have the same arrangement. It woiuld be interesting to discover if there are two varieties of pulley. I have made a bolt on joggled plate I can mark with TDC and 22° bTDC which should work. Unfortunately, with the engine on the bench on a support frame, I can't mount the flywheel so the timing will have to wait a bit longer. Thanks again.
  3. GBW

    Timing pointer

    I have compared the pulley with others (pictured on ebay) and the keyway and notch are aligned in the same way. The crankshaft keyway is in line with the big ends which appears correct. Obviously every other engine is wrong! In desperation, I am making up a timing plate to bolt onto the cover and will mark it appropriately. Tony's idea of using the flywheel as a protractor is excellent (and not one I would have thought of). The mystery remains. If I find an explanation, I will post it here. Thanks again for all the help.
  4. GBW

    Timing pointer

    Photos attached. As you say, there is a timing mark on the chain cover (albeit a crude one) shown in the photo. The other photo shows a white marker in the pulley groove and the piston is at TDC. The botl on plate I referred to, is shown if the other photo which is taken from the !.5 manual readily downloadable.
  5. GBW

    Timing pointer

    Thanks.
  6. GBW

    Timing pointer

    Thanks to all. Sorry if I have posted in the wrong forum. All my posts have been about this engine. On the bottom of the chain cover, there is a rather crude minimal pointer. Lining the crankshaft pulley indent with this, puts the crankshaft near bottom dead cent. I have a Wolsley manual with the same engine and that shows a bolt on pointer with two fixing holes to fit over the chain cover. The flywheel is not yet fitted but the head is off so I guess, if I make a pointer as the drawing I have, I can gauge TDC from the piston movement - half way between when it stops coming up and when it stops going down. I use the MG Owners Club spares website as they have a large stock of engine parts for the BMC engines fitted to the MGA and MGB. (They are cheap as well!). I'll take a photo of the Wolsley drawing and (hopefully) post it here.
  7. GBW

    Timing pointer

    (I know, it's taking longer than anticipated!) Finding myself baffled trying to set the injector pump timing, I found the timing mark on the main pulley lined up with the pointer on the underside of the chain cover a long way adrift. Perusing the various documents I have to hand, it appears there is a bolt on pointer which lives in a more rreasonable place. During the closure of my engineering company, it seems to have gone missing. I have not found it listed on the MG Owners Club site (which is my source for spares). Any advice please? Thanks.
  8. Lit (for heat) or unlit for ease of combustion? If the latter, would a cigarette lighter suffice?
  9. My 1.5 BMC in benign temperatures starts fairly easily and, once warmed up, starts instantly, however, in current conditions, ~10°C, it is very reluctant even with one minute of glow plug usage (yes, I know they are working as I monitor the current). Remembering the cautions about the use of Easy Start, I did try a quick squirt into the air intake and was amazed at the instant start resulting. What are current views on the possibility of engine damage from its usage?
  10. One of the "navvies" has managed to make contact with the aforementioned Sykes es employee who has offered to rebuild the pump. Problem solved hopefully.
  11. I now have a little more information. Univac pump p1.pdfUnivac pump p1.pdf Univac 2.pdf I don't understand item 32. The only person left at Sykes with an in depth knowledge of this pump has departed (the company not life). It seems the shaft, item 14, rotates inside the bush item 32. There are shim washers 22-24 which seem to allow the impeller to be moved back and forth relative to the shaft. Maybe these shims provide a seal but it doesn't seem right. The other conundrum is that there seems to be no source of lubrication between the shaft and the bush. Can it be water lubricated? It is ferrous but no signs of rust. The bush is described as a "renewable sleeve". Today is "Canal Day" (the volunteers work on Tuesdays) and perhaps they have discovered more.
  12. I am very much an outsider but I will attempt to find some more details, sizes and photos. It has a vacuum pump and electric start. I have seen it working, lifting around 8 feet and an impressive output. Thanks for all the suggestions. I'll pass them on. Despite the enormity of the task, the volunteers are not overawed accepting that it will be their grandchildren who may see their ultimate rewards. The canal having been taken over by a railway company, it passes through Newent station and there are plans to install an inclined plane to access it and cross a main road. The other little problem is the tunnel under the M50.
  13. I attempt to support the Hereford & Gloucester Canal Trust in their ambitions to recreate the 34 mile link. (This is not a trivial aim!). Our local stretch in Newent has reached a modest milestone with a short stretch now in water. It is filled from a local source using a Lister powered centrifugal pump. The engine is responding well to restoration but the pump seals have failed. The problem is that it has proved impossible to find drawings of said pump to understand the sealing arrangements. I can manufacture the parts but not without drawings. Anyone help please?
  14. GBW

    BMC 1.5 diesel rebuild

    Thanks for the head up. I think I made one - I'll start ferreting!
  15. GBW

    BMC 1.5 diesel rebuild

    Thanks both - money saved!
  16. GBW

    BMC 1.5 diesel rebuild

    Do I need to replace the cylinder head bolts with new? They seem pretty expensive but I don't intend to "spoil the ship".
  17. GBW

    Money saving tip

    In case anyone doesn't know already. There is a lot of commonality between the BMC diesel engines and their petrol equivalents. The MG Owners Club website offers many interchangeable parts at substantial savings. https://www.mgownersclub.co.uk/spares
  18. No, it is clear of the rocker cover. Rusty interior is visible through the hole. There is no machined surface and it is connected to the waterways. This engine is probably as old as I am (do the search!). 5/8" UNF is 18 tpi. this corresponds to a pitch of 1.41mm. For some strange reason, my elderly thread gauge, made in the USA!, does not present 18 tpi. It does offer 1.5mm, but that doesn't quite fit. The plug is short which doesn't help. (I am not going to fire up my 0.00001 measuring microscope1!) 5/8" diameter is 15.875mm. I think I am going to go with 5/8" UNF.
  19. Why? I don't think metric was very common when this engine was built! However, the plug gauge I used which was a very nice fit in the hole, happened to be M16 fine! It had been returned to the wrong drawer.
  20. Thanks. What's it for then? I could use it for an additional water temperature sensor I suppose.
  21. The threaded hole next to the blanking plug (5/8" UNF). It seems to connect to the waterways. Is it usable for calorifier take off (in or out)? The hole next to the blanking plug (tapped 5/8" UNF).Is it usable for calorifier take off (out or return)?
  22. GBW

    Ring gap

    I've found the definitive values in a BMC repair manual. Top ring 0.012-0.017 Remainder0.008-0.013.
  23. Try before you buy. Some can be uncomfortable round the neck after a while.
  24. GBW

    BMC 1.5 stop lever.

    Brilliant Tony - thanks. Now to find a Torx socket!
  25. GBW

    BMC 1.5 stop lever.

    The stop solenoid usually has insufficient pull to close the stop valve. The valve return spring has insufficient push to open it. It would seem the valve is sticky. I have been unable to discover how the shaft is held in the injection pump. Can anyone advise please?
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