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Block does not need resizing. I am simply doing a final finish to apply the cross hatching better than it is right now. I dont consider it sufficient at present. With the grade of the hone and time spent in each cylinder, nothing will be made 'sloppy'. This is confirmed by the manufacturers information, and advice from 2x mechanics who have inspected the block is that the final hatching has not been done on the cylinders. I believe this was left for the person doing the assembly, rather that at time of manufacture or machining.
The link I posted yesterday will show the specific info on the hone grade I have purchased. Also, a number of youtube videos on its use confirm my use is appropriate. I will give no more than 10 seconds total in each cylinder.
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Ford CMP, 115" WB,1942 (Under Restoration...still) Medium sized, half fake, artillery piece project. (The 1/4 Pounder) Last edited by Private_collector; 23-06-14 at 22:41. |
#2
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Very interesting Tony. I wonder if it has anything to do with being a military block, which would be going through Army workshops. Or is this standard practice for all new blocks purchased bare? I've only ever fitted rebored blocks, and they've always been finished to spec. The only time I've used a hone is for ring jobs, to deglaze the bores and remove the lip. Afterwards I check the piston clearance to make sure it's still acceptable.
It's quite good fun I think you'll find, although if you have an old block it would be worth practicing on, to get the 60 degree pattern Lynn mentioned. Look forward to more pics as the job proceeds.
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One of the original Australian CMP hunters. |
#3
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Yes, Tony.W., I would recommend a practice. (sheep dag hones are great! They make any bore look good)
Pistons in a set, are not always the same size. In a factory assembly situation the standard pistons used to be graded for size (and or weight) so that an engine might end up with a set about the same. Hopefully the pistons in your set, have been graded (I would expect them to be these days) I would though, measure them. Tony you will no doubt be setting up a financial relationship with an engine reconditioner for at least the sizing of your gudgeon (con rod) bushes, I am sure you can pick up some expert guidance from him/her (you never know) at the same time.
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Bluebell Carrier Armoured O.P. No1 Mk3 W. T84991 Carrier Bren No2.Mk.I. NewZealand Railways. NZR.6. Dodge WC55. 37mm Gun Motor Carriage M6 Jeep Mb #135668 So many questions.... |
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Why on earth would I need someone to mess with the con rods & piston pins?
New pistons, new pins, new con rods with bushes insitu. Following the test shown in factory maintenence manual, everything fits perfectly. Fully expect to call for help with some task or another, but wouldn't have thought they should need to muck around with parts which fit properly already. Funny, for a job that anyone is supposed to be able to do, sure sounds like a lot of things the experts are needed for. ![]()
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Ford CMP, 115" WB,1942 (Under Restoration...still) Medium sized, half fake, artillery piece project. (The 1/4 Pounder) |
#5
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Tony, You obviously have all the bases covered. Good luck with assembling your engine.
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Bluebell Carrier Armoured O.P. No1 Mk3 W. T84991 Carrier Bren No2.Mk.I. NewZealand Railways. NZR.6. Dodge WC55. 37mm Gun Motor Carriage M6 Jeep Mb #135668 So many questions.... |
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Yes, but you're rapidly becoming an expert yourself Tony!
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One of the original Australian CMP hunters. |
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While searching ebay for a couple of bits, I cam across this Chevrolet truck.
http://www.ebay.com.au/itm/1948-GMC-...22e2b8b&_uhb=1 $_57-3.jpg $_57-2.jpg I think this is about the coolest vintage vehicle I have ever seen!!! If only I were rich. Should have listened to Mother when I was young. ![]()
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Ford CMP, 115" WB,1942 (Under Restoration...still) Medium sized, half fake, artillery piece project. (The 1/4 Pounder) |
#8
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I remember many years ago watching an American TV production about 2 characters, they drove a GMC COE type truck, I tried google but couldn't find it.
There was one similar at the 'Kurri Nostalgia' festival this year, cheers Dennis ![]() |
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