 jetting question |
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| last337 |
 Apr 28 2013, 07:17 PM
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Member  Group: Members Posts: 421 Joined: 4-December 12 From: New Orleans Member No.: 15,221 Region Association: None  |
Okay so I had another thread troubleshooting these carbs but I've found the jetting to be the culprit. I am looking at Bob Tomlinson's suggestions and he is suggesting bw a 1.45 and 1.55 for the main jet. I currently have only a 1.15. I have a 52 for the idle and he recommends a 55. What do you guys think? I am running a stock 2.0.
Also, any suggestions on a vendor for jets? |
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| ThePaintedMan |
Apr 28 2013, 07:47 PM
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Advanced Member Group: Members Posts: 3,887 Joined: 6-September 11 From: St. Petersburg, FL Member No.: 13,527 Region Association: South East States 
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QUOTE(last337 @ Apr 28 2013, 09:17 PM)  Okay so I had another thread troubleshooting these carbs but I've found the jetting to be the culprit. I am looking at Bob Tomlinson's suggestions and he is suggesting bw a 1.45 and 1.55 for the main jet. I currently have only a 1.15. I have a 52 for the idle and he recommends a 55. What do you guys think? I am running a stock 2.0. Also, any suggestions on a vendor for jets? As long as you still have some adjustment (at least 1-1.5 turns out) on the idle mixture screw, the idle jets should be fine. Glad you took Kevin's advice! It wasn't till I read Tomlinson's manual that carbs started to make a whole lot of sense to me - and jetting logic becomes a piece of cake. The 1.15s are stock main jets for most new Webers or knockoffs - way too small. Whether you go with 1.45 or 1.55 is more dependent on altitude and ambient temperature. With a 2.0 at sea level, probably just split the difference and go with 1.50. If you buy from Aircooled.net, you'll pay a tad more, but John has a return policy that lets you swap out jets if you decide that 1.45 or 1.55s are more what you need. |
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Posts in this topic
last337 jetting question Apr 28 2013, 07:17 PM
rhodyguy easier to keep track of what's happening and w... Apr 28 2013, 08:00 PM
last337
easier to keep track of what's happening and ... Apr 28 2013, 08:03 PM last337 So do you guys think a 150 is what I should go wit... Apr 29 2013, 02:29 PM michael7810 My 1911 has 135 mains and AF is 12.5 at WOT (IDF40... Apr 29 2013, 03:49 PM last337 I spoke to a guy at dirtyracingandrods and he seem... Apr 29 2013, 04:39 PM ThePaintedMan
I spoke to a guy at dirtyracingandrods and he see... Apr 29 2013, 05:04 PM last337 Well from what I understand the main circuit picks... Apr 30 2013, 07:14 AM rhodyguy what is the venturi size? :unsure: engine off, loo... Apr 30 2013, 08:01 AM last337 Currently this is everything I verified
115 main
5... Apr 30 2013, 08:12 AM rhodyguy thomlinsons base line guide for dual idf 1835-2000... Apr 30 2013, 08:33 AM last337 What does the main air correction jet do? Apr 30 2013, 09:25 AM rhodyguy p. 59. Apr 30 2013, 09:39 AM last337 So I talked to john at air cooled.net and he said ... May 1 2013, 05:45 PM yeahmag I think you really need an LC-1 or LM-2. The LC-1 ... May 1 2013, 05:58 PM 396
I think you really need an LC-1 or LM-2. The LC-1... May 1 2013, 08:05 PM ThePaintedMan
I think you really need an LC-1 or LM-2. The LC-1... May 1 2013, 08:29 PM jmill
So I talked to john at air cooled.net and he said... May 1 2013, 08:39 PM jmill
A change in air correction jets results in a rich... May 1 2013, 08:49 PM |
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