6/carbs: ? about tall 2ndary venturi's, rich, I miss you. |
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6/carbs: ? about tall 2ndary venturi's, rich, I miss you. |
brant |
Nov 3 2005, 11:50 AM
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#1
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914 Wizard Group: Members Posts: 11,640 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains |
carbs: ? about tall 2ndary venturi's
Hi all... thanks for the help in advance. I want to try a set of the tall 2ndary's on my IDS-3C carbs. I'm running the stock ones and want to try the tall ones, that I've heard called "906-style" its a race car and withoug re-hashing all of my jetting and dyno history, my questions are: 1) pierce manifold says they have 2 different types in stock a 3.5 size and a 4.5 size. I believe this measurement is in reference to bore and not height. Pierce said that both sizes are the "tall" type. Which do I want? Motor is a 1967 2.0/S motor at altitude. (the pierce catalogue references that the IDS carbs came with 4.5 short, but I'd like confirmation before I order) 2) Does anyone know if these tall secondaries interchange on the IDA carb versus the IDS carb. I would assume so, but I once bought some F33 emulsion tubes from Pierce that do fit the IDA, and found that they would not fit the IDS. I didn't know there was that much difference between the two carbs, which surprised me. But again, before I order do people know if the 906-type tall 2ndaries will fit an IDS-3C body? again, thanks in advance everyone! brant |
Root_Werks |
Nov 3 2005, 12:01 PM
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#2
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Village Idiot Group: Members Posts: 8,337 Joined: 25-May 04 From: About 5NM from Canada Member No.: 2,105 Region Association: Pacific Northwest |
Actually, Jake Raby had a decent write up on stack hieght some time ago. He mentioned going tall made a big difference, but you could also go too tall. I would say go with the 3.5's. I think if you go too tall, you begin to loose the effiency of the volicity effect? ..... I think anyway. (IMG:http://www.914world.com/bbs2/html/emoticons/idea.gif)
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