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Post by novafrk on Sept 11, 2013 10:40:11 GMT -4
Does anyone have a pair of 210 or 220 mains I can buy / borrow before Friday morning? Please let me know.
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Post by triumph803 on Sept 12, 2013 16:21:15 GMT -4
Eric, I've got a set of 220's. I'll be at Brockway this evening(Thurs. night),I'll bring them with me,so if you show up,they are yours. If you can't make it,but can find someone to pick them up,that would be O.K. Jack
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Post by novafrk on Sept 16, 2013 16:25:44 GMT -4
Hey Jack,
Thanks for the offer Jack. Sorry I didn't see it before I drove out to Bainbridge. I was able to get a set and the bike loves them. I just have a slight stumble with some detonation right at 1/4 throttle... I'll get that figured out though. Need to research if I need to change the needle when I change the needle jet.
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Post by triumph803 on Sept 17, 2013 11:08:19 GMT -4
Eric, the needles are stainless steel,the needle jet is brass. the jet gets worn but the needle doesn't. The jet for your bike should be a 106. If a .1065 pin gauge will go in it, it needs to be replaced. Jack
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Post by hogsausage on Sept 18, 2013 9:24:34 GMT -4
I know I have a new 105 and 106 if you want to try those.
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Post by novafrk on Sept 18, 2013 10:25:18 GMT -4
The carbs were brand new with 106 needle jets. The bike has responded well to bigger jets / richer slides so I'm gonna go with the 107 needle jet. If I understand it correctly right at 1/4 throttle it's transitioning from the slides/pilot circuit to the needle jet. I'd have to look at the chart again though so don't quote me. Thanks though man!
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Post by triumph803 on Sept 20, 2013 0:40:22 GMT -4
Eric, FWIW,I think you will find the 107 WAY TOO RICH. The jump from 106 to 107 is alot more than it sounds like it is. to make a change that is in line with say a main jet change of 200 to 210, the change is done with the needle. Jack
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Post by novafrk on Sept 23, 2013 9:01:11 GMT -4
That is good to know Jack. By needle change do you mean a clip adjustment or a different needle? If it's a different needle can you suggest a pn? Thanks for your help!
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Post by triumph803 on Sept 23, 2013 10:08:36 GMT -4
Eric, clip adjustment. The needle used on the '71's works fine for the 30 mm amal on a 650 triumph.Besides the clip,you can also make changes in the mixture by adding thin washers to the jet holder and needle jet. Jack
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