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General Chat (Vincent Related)
Monobloc on a '51 Comet
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<blockquote data-quote="Desmond" data-source="post: 138858" data-attributes="member: 4026"><p>Bill: Thank you for that. I have just asked my machinist friend to send me down the 270 main jet out of the Concentric that he had examined and said that it was now junk. That will be a big improvement over the present 230 but I am not really working onff the main jet yet as I am still running in the new top end and not really opening up the throttle---head, piston and barrel all new. Don't think my timing has slipped as--when I did get her started--she ran nicely and sounded good. My first problem had been that my pilot jet was not well seated and she was running VERY rich with black smoke and banging in the silencer. When I know exactly where I am going with this Monobloc, I shall order all new jets and needle from Surrey but, with Brexit, everything is taking a long time to get to us in Ireland although a small envelope of jets and bits might come through fairly easily. I think I have the 389 Monobloc (1 1/8") and I need to find out the exact recommendation of jets etc. I have a good HT lead with wire in the centre and a good non suppressor plug cap. I have a beautiful strong blue spark. No, I don't think I have a rag still at the inlet as I have now run the machine a few times. I did think of that one as well. In the Forum I see some reference to the Greg Brillus modification. What is that?</p></blockquote><p></p>
[QUOTE="Desmond, post: 138858, member: 4026"] Bill: Thank you for that. I have just asked my machinist friend to send me down the 270 main jet out of the Concentric that he had examined and said that it was now junk. That will be a big improvement over the present 230 but I am not really working onff the main jet yet as I am still running in the new top end and not really opening up the throttle---head, piston and barrel all new. Don't think my timing has slipped as--when I did get her started--she ran nicely and sounded good. My first problem had been that my pilot jet was not well seated and she was running VERY rich with black smoke and banging in the silencer. When I know exactly where I am going with this Monobloc, I shall order all new jets and needle from Surrey but, with Brexit, everything is taking a long time to get to us in Ireland although a small envelope of jets and bits might come through fairly easily. I think I have the 389 Monobloc (1 1/8") and I need to find out the exact recommendation of jets etc. I have a good HT lead with wire in the centre and a good non suppressor plug cap. I have a beautiful strong blue spark. No, I don't think I have a rag still at the inlet as I have now run the machine a few times. I did think of that one as well. In the Forum I see some reference to the Greg Brillus modification. What is that? [/QUOTE]
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Monobloc on a '51 Comet
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