sam1904 Posted December 30, 2020 Share Posted December 30, 2020 (edited) All, I am a little confused which will come as no suprises to those off you who have read other posts of mine! I am installing a pair of 40 DCOE's and using Ireland 4" velocity stacks. When I remove the stock horns there is a sleeve that slides into the carb that the stacks don't have and the location diameter is about 2mm larger (A vs. b. ) When I mate up the stacks they are diametrically very loose. I am sure the tabs may center then a little but this and the lack of sleeve doesn't seem right?? Do I have the right parts? Thanks Sam Edited December 30, 2020 by sam1904 Correct Quote Link to comment Share on other sites More sharing options...
sam1904 Posted December 30, 2020 Author Share Posted December 30, 2020 it looks like if the right size the 45DCOE stacks above are more in line with what came off? Quote Link to comment Share on other sites More sharing options...
visionaut Posted December 30, 2020 Share Posted December 30, 2020 (edited) Your style 40 DCOEs should use the slot-in style trumpets as shown on the right in your first pic. To use that bolt-on style ‘velocity stack’ you’d need to find DCOE 40 insert sleeves. You need the insert sleeve or slot-in style trumpets to fix/hold the Aux Venturis in place. Tom Edited December 30, 2020 by visionaut Quote Link to comment Share on other sites More sharing options...
sam1904 Posted December 30, 2020 Author Share Posted December 30, 2020 (edited) Thanks! Edited December 31, 2020 by sam1904 Quote Link to comment Share on other sites More sharing options...
TobyB Posted December 30, 2020 Share Posted December 30, 2020 What Tom said- you need the sleeved velocity stacks. Many of us are not surprised- at this point, call them, talk to Jeff, and get him to send you the right parts. If they have them. In my recollection, what they have as labelled for 45's are the way 40's work, and vise-versa. t 1 Quote Link to comment Share on other sites More sharing options...
visionaut Posted December 30, 2020 Share Posted December 30, 2020 12 minutes ago, TobyB said: In my recollection, what they have as labelled for 45's are the way 40's work, and vise-versa. My thInking exactly, Toby, looking at the IE part pics. 40s use the slot-in style, 45s don’t. The design seems backwards - at first it thought they were just mislabeled pics, but they also refer to their distance/length measurements, and the ones labeled 45/5.5 do look bigger... Both are not very ‘aero’ looking to me either. Quote Link to comment Share on other sites More sharing options...
halboyles Posted December 30, 2020 Share Posted December 30, 2020 If you can't get a quick response from IE, I have some short 40 DCOE stacks that might work until you can get the curved version. Quote Link to comment Share on other sites More sharing options...
sam1904 Posted December 30, 2020 Author Share Posted December 30, 2020 Do you wear a cape? Let me know what you have and if it works I will just return the IE parts.... P.s linkage is on a and seems to work great! Quote Link to comment Share on other sites More sharing options...
halboyles Posted December 30, 2020 Share Posted December 30, 2020 2 minutes ago, sam1904 said: Do you wear a cape? No, but I do wear a mask! Here are some that should be short enough to clear the brake booster. Do you have the retainers to hold the stacks in place? See first pic. Like visionaut said, you can't really run the 40 DCOEs without these. 1 hour ago, visionaut said: You need the insert sleeve or slot-in style trumpets to fix/hold the Aux Venturis in place. 1 Quote Link to comment Share on other sites More sharing options...
sam1904 Posted December 30, 2020 Author Share Posted December 30, 2020 thanks but those are what came on the carb and I have. Am looking to add a filter and need an angled stack toclear the booster. Sam Quote Link to comment Share on other sites More sharing options...
halboyles Posted December 30, 2020 Share Posted December 30, 2020 Sorry, but I don't have any of the angled versions on the shelf. As far as clearing the booster, I will have a batch of rebuilt ti/tii boosters available later next month if you want to eliminate that fitment problem and install a rebuilt booster at the same time. Quote Link to comment Share on other sites More sharing options...
kbmb02 Posted December 30, 2020 Share Posted December 30, 2020 (edited) 1 hour ago, sam1904 said: thanks but those are what came on the carb and I have. Am looking to add a filter and need an angled stack toclear the booster. Sam Mildly-angled stacks like this work/fit pretty well (shown next to 'standard' DCOE stack), though filters require some creativity -KB Edited December 30, 2020 by kbmb02 - 1 Quote Link to comment Share on other sites More sharing options...
sam1904 Posted December 30, 2020 Author Share Posted December 30, 2020 This is my road car and it’s really dusty around here so I was looking to run the filter set up shown in the picture below. I spoke to someone at IE (the owner?) and he stated that these parts are for the 40s, the sleeve is not needed and any small amount of air that bypasses the Stack because of the excessive diametral gap will not be an issue... Not sure if I should cut the sleeves off the original trumpets and slide them in the gap to plug the hole? Quote Link to comment Share on other sites More sharing options...
visionaut Posted December 30, 2020 Share Posted December 30, 2020 It ain’t just the ‘leak’ at the outlet caused by the mismatched diameter to worry about. It’s your Aux Venturii rattling around inside because there’s nothing holding them in place. The long sleeves on the proper slot-in style stacks for your 40 DCOEs do that. Since you want to retain your stock non-tii brake booster, you’re going to see clearance issues. If it were me, I’d look at ‘stubbie’ stacks with a flat-style air filter. Tom Quote Link to comment Share on other sites More sharing options...
sam1904 Posted December 30, 2020 Author Share Posted December 30, 2020 On the afore mentioned call it was also mentioned the aux venturis are held in by a screw... I don’t like it but it will get me down the road. Quote Link to comment Share on other sites More sharing options...
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