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Barry

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Posts posted by Barry

  1. Took a trip to Sharjah classic car museum with mrs Barry and my brother in law. All in all, a good experience. I'd recommend you go. Over 100 cars. Most of them are in their original state, i.e. All unrestored, complete with patina. The highlights for me were the French classics, Peugeot 304, Citroen Ds, plus the German vw karmann ghost. Here are a few teaser pics, go see the rest for your self.....

     

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  2. All the rings are metal. If they were made of rubber, they would simply melt as soon as the engine was started. There's a lot of heat inside the cylinder. 

    Lucky for you I'm currently working on an engine with a piston ring problem so I can show you a pic. The engine was overheated and the rings stuck inside the grooves on the piston so they weren't pushing against the cylinder wall and creating a seal. This resulted in the engine losing compression and not starting unless oil was put into the cylinder. 

    You can see from left to right, primary ring, secondary ring and oil ring. You will also notice that the oil ring is grooved to let it carry oil around the base of the piston. 

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  3. Generally, there are 3 rings. The top one is the primary compression ring which holds the compression in the cylinder when firing. In the middle there is a secondary compression ring which acts as a backup for the primary compression ring. The secondary compression ring will be a bit tighter than the primary ring to help with holding the compression in. The bottom ring is the oil ring. This distributes oil right around the circumference of the base of the piston which lubricates and helps to keep the piston cool. The oil ring also prevents oil from travelling up into the combustion chamber. Think of a piston ring a bit like a round spring. It has to be compressed to fit into the cylinder. When fitted, they spring out and press against the cylinder wall and create the seal. If they were made the same size as the cylinder, they would simply slide up and down and not do anything. Hopefully that makes sense to you. 

  4. This should be an interesting one when it comes out. Always loved Supras. Had a chance to buy one dirt cheap from a garage I worked in and always kicked myself that I said no. Stupid british government and their petrol tax. Also had a run in a modified one that was pushing 700 Bhp with nos. that was an interesting drive. 

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  5. @desertdude are you sure? I haven't seen a carb as standard on anything since the early 90s. If anything, it's possible to be SPI which kinda looks like a carb but I'd put money on it being MPI. 

     

    @naeem you need to check the basic things first like spark plugs and air filter. It could also be a problem with a weak fuel pump. There are a lot of possible answers but the best one is to find a good mechanic and take the car to him. 

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