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Amal 370/1

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Amal 370/1

Post  Geoff on Tue Sep 30, 2014 10:54 am

My 1959 Light Cruiser currently has an Amal monobloc carb. The instruction manual specifies a 370/1. I've picked up one of these as I'd like the bike to be as close to original spec as possible. This 370, however, puts the float bowl and carb body at an angle of about 45 to the vertical which doesn't seem right. Can anybody advise?
Thanks
Geoff

Geoff

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amal 370/1

Post  MoscowFlyer on Tue Sep 30, 2014 12:42 pm

Hi Geoff, you must have bought the wrong carb, if you look at the diagram below you can see the fixing stub is at 45 degree angle. Mike

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Amal 370/1

Post  Geoff on Tue Sep 30, 2014 2:17 pm

Thanks Mike.
I suspect I'm being thick but the 370 I've got is exactly as that in your diagram with the fixing stub at 45 degrees. What isn't at 45 degrees are the corresponding studs on the cyclinder inlet.
I may well have picked up the wrong carb and it runs fine with the monobloc but I am intrigued as to the angle of the fixing stub on the carb.
Thanks again
Geoff

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Amal 370/1

Post  MoscowFlyer on Tue Sep 30, 2014 3:35 pm

Hi Geoff, the part number for the cylinder is 041610. The flange on the cylinder should be at an angle too. Mike
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carb woes

Post  piston 197 on Tue Sep 30, 2014 5:02 pm

If your bike has a horizontal carb fitting then the cylinder is from a 20T 199cc engine, as must be the cranks as it has a longer throw ( stroke) to suit the longer barrel and to give the difference from 171cc to 199cc, other than this the engines are more or less identical, so either you have a 20T engine with 17T number stamped on it , or you have a 17T engine with a 20T crank and barrel, pistons after engine No 17T 3032 are identical in both models
JH
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Thanks

Post  Geoff on Wed Oct 01, 2014 8:51 am

Mike & Piston,
Thanks - this has also answered another question of mine. Although the bike is registered as a 175 the engine is stamped 20T7800. The reg.document says 17T2505 so there's been some swapping around in the past.
Once again many thanks. I appreciate the advice.
Geoff

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