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suffolkpete
YaBB God
Posts: 544
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« Reply #3 on: June 22, 2010, 10:27:08 pm » |
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I took out the screw and put a punch against the threaded bit it locates into and tapped it, not too hard, but that didn't move. Is that what you suggest? Yes it was, but I think I'd use something flat, the pointed end of a punch might do some damage. I'm getting a bit out of my depth with the bearing shells. There are two sizes of standard, slightly different in diameter, colour-coded red and blue and replacements must be of the same type. It sounds as if you have blue. Mine were red, identified by a splash of red paint on the con-rods. I got all the parts I needed from my local motor factors, Motor Parts Direct. It took about 4 days but they had everything I needed. Be very careful when you talk to them, Rootes/Chrysler (predecessor of Talbot in the UK) produced a 1592 cc engine which is completely different from the Simca unit. Also make sure they understand the difference between red and blue shells. Their engine specialist at the Ipswich branch was very helpful though. One of the Simca Club's parts specialists is Colin Hill who lives a short distance from me, although I've never met him. I think he may even have owned my car for a time. I think at times like this we need Roy, although Spyros, who mostly frequents the Bagheera forum, seems very knowledgeable about these engines.
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suffolkpete
YaBB God
Posts: 544
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« Reply #11 on: June 29, 2010, 09:49:31 am » |
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I've measured the spigot bush again, and it's more like 12mm - it's hard to measure with the flywheel in situ. I ought to excavate the spare gearbox and try to do an accurate measurement. Not sure what the running clearance should be. You may not need to replace it, though if they're easily obtainable and you can get the old one out,it's worth doing. The Simca/Talbot crowd assure me that standard shells are standard I was moved to go back through my emails after reading that and this is what Roy wrote to me You need to measure the con-rods accurately unless you can see any colour coding on them. The big ends are rated red or blue depending on their bore size (the place where the shells fit). If they are 43.997 to 44.005 they are red; 44.005 to 44.013 are blue. In other words the blue shells would be slightly larger diameter on the outside where they fit in the con-rod which was machined very slightly bigger. So although you may only want standard shells in terms of the crank pin diameter, you will want either red or blue to fit the actual con-rods.
The dimensions Roy gives are in mm Haynes states that the blue crankpins are 0.0004" smaller than the the red, but that the shells are 0.001" thicker. I suspect that both Roy and Haynes are correct (I'm certainly not going to disagree with Roy!) but I'm not sure what, if anything, would be the consequence of using the wrong ones.
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