tag:blogger.com,1999:blog-8533685731377501768.post7346609957447918540..comments2023-09-17T17:02:41.669+09:30Comments on Restoration Volvo 122S 1969: Dyno - Machining the SU carb needlesGovolvohttp://www.blogger.com/profile/16547683738379667878noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-8533685731377501768.post-12169185764419160052021-11-13T03:44:40.499+10:302021-11-13T03:44:40.499+10:30I had good results with K grind cam and SM needles...I had good results with K grind cam and SM needles. Ported head...David Mhttps://www.blogger.com/profile/13953801695354747826noreply@blogger.comtag:blogger.com,1999:blog-8533685731377501768.post-55291488405147712512017-02-17T09:29:20.025+10:302017-02-17T09:29:20.025+10:30Govolvo; Compliments on a good explanation of Fue...Govolvo; Compliments on a good explanation of Fuel Metering Needles etc...sure the AFR graph from the Dyne tells you where you are lean and rich (and it is important that measurement be taken steady state Throttle/Load condition)...and IF you are able to associate that with an accurate height (MN exposure) you would know where MN needs to be adjusted, but still not HOW MUCH! Please elaborate on process you used! You're Amazon blog is very good and informative. I invite you to contact me through SW-EM.com site. Cheers from Connecticut Ron Khttps://www.blogger.com/profile/00793357641950531048noreply@blogger.comtag:blogger.com,1999:blog-8533685731377501768.post-73117724491102479422015-02-23T20:12:06.466+10:302015-02-23T20:12:06.466+10:30Hi Andrew, you're right, I accidentally put a ...Hi Andrew, you're right, I accidentally put a <= instead of a >=, I've updated it now. Thnx for the tip.Govolvohttps://www.blogger.com/profile/16547683738379667878noreply@blogger.comtag:blogger.com,1999:blog-8533685731377501768.post-13431383736859594522015-02-23T14:10:33.572+10:302015-02-23T14:10:33.572+10:30Hello,
I am a little confused. A lower AFR mean...Hello,<br /><br />I am a little confused. A lower AFR means that there is less AIR to fuel. That means the mix is too rich. If yours was less than 12.5, machining down the needle would make the AFR even lower.<br /><br />AndrewAnonymousnoreply@blogger.com