DuffyMahoney Posted March 25, 2020 Author Share Posted March 25, 2020 No throttle blade on any carb or throttle body that I have seen is designed to seat 100%. On carbs that I have rebuilt you can see damage from people trying. I got it to run and idle down, but butterflys stick almost fully. I will fix it right and get an IAC that closes 90-100%. Really I want the IAC off after it's warm. OEMs that do ITB use a large balance log just like this, bmw etc.. Quote Link to comment Share on other sites More sharing options...
tioga Posted March 26, 2020 Share Posted March 26, 2020 6 hours ago, Derek said: In theory the butterfly's should be closed at idle and all of your idle air controlled by the valve. 6 butterflies slightly cracked is not a dependable metering method for the air. It can also build up gunk over time but I doubt that will ever be a problem with Mr " I can eat of my motor because it's so clean" Yes I'm jealous . in theory yes but in practice no. You want enough base idle in the butterfly to have a low idle and then the stepper goes from there. Today’s efi is much better and I am sure Duffy’s stand alone is more than capable of quick response but I spent most of the 80’s-90’s cleaning throttle plates and setting base idle to keep every car running a BOSCH fuel system from start stalling in the morning. Saab and Volvo were the worst. Quote Link to comment Share on other sites More sharing options...
tioga Posted March 26, 2020 Share Posted March 26, 2020 That vdo valve for the bmw has a adjustable air bleed on it for a base idle adjustment. Quote Link to comment Share on other sites More sharing options...
DuffyMahoney Posted March 26, 2020 Author Share Posted March 26, 2020 5 minutes ago, tioga said: That vdo valve for the bmw has a adjustable air bleed on it for a base idle adjustment. I bought the vdo. Thanks for the help! Now I need to find a pigtail first the harness Quote Link to comment Share on other sites More sharing options...
tioga Posted March 26, 2020 Share Posted March 26, 2020 Can prob buy the Connector housing and terminals from bmw. It fits a 84 e30 bmw 325e I can give you the last 7 of a vin tomorrow. I have one at the shop now. Quote Link to comment Share on other sites More sharing options...
DuffyMahoney Posted March 26, 2020 Author Share Posted March 26, 2020 Internet is coming up with zero on the plug. Quote Link to comment Share on other sites More sharing options...
tioga Posted March 26, 2020 Share Posted March 26, 2020 Porsche/Mercedes round pin connectors should be the same. They were used everywhere on those cars in the 80’s I can try to double check tomorrow. I think I actually have one at work in a box of connectors. Look for Mercedes idle motor it temp sensor connector housings Quote Link to comment Share on other sites More sharing options...
tioga Posted March 26, 2020 Share Posted March 26, 2020 https://www.pelicanparts.com/More_Info/0125450428.htm?pn=012-545-04-28-M22 https://www.pelicanparts.com/More_Info/0035452626.htm?pn=003-545-26-26-M22 housing also comes in a 90* version if that is better. https://www.pelicanparts.com/More_Info/0115457128.htm?pn=011-545-71-28-M22 Quote Link to comment Share on other sites More sharing options...
tioga Posted March 26, 2020 Share Posted March 26, 2020 That terminal might be for the 90* housing but will prob work in either looks a little shorter than I remember. They just solder on. Quote Link to comment Share on other sites More sharing options...
DuffyMahoney Posted March 26, 2020 Author Share Posted March 26, 2020 Thank you so so much. Ordering now Quote Link to comment Share on other sites More sharing options...
DuffyMahoney Posted March 28, 2020 Author Share Posted March 28, 2020 E31 is back from final surfacing! Vapor blasting it was tedious. But results areawesome. Quote Link to comment Share on other sites More sharing options...
madkaw Posted March 29, 2020 Share Posted March 29, 2020 4 hours ago, DuffyMahoney said: E31 is back from final surfacing! Vapor blasting it was tedious. But results areawesome. Why so tedious? Quote Link to comment Share on other sites More sharing options...
DuffyMahoney Posted March 29, 2020 Author Share Posted March 29, 2020 19 hours ago, madkaw said: Why so tedious? It probably took 5 hours to vapor blast all of it. Lots of surface area. Quote Link to comment Share on other sites More sharing options...
DuffyMahoney Posted March 31, 2020 Author Share Posted March 31, 2020 Well the 80s bmw iac is awesome, smaller and nice looking. Let’s no air or minimal amount by when physically closed. Now to find out what pin is positive. Quote Link to comment Share on other sites More sharing options...
madkaw Posted March 31, 2020 Share Posted March 31, 2020 On 3/29/2020 at 4:27 PM, DuffyMahoney said: It probably took 5 hours to vapor blast all of it. Lots of surface area. I had no idea it would take that long , but I know you are using a homemade version . Quote Link to comment Share on other sites More sharing options...
tioga Posted March 31, 2020 Share Posted March 31, 2020 (edited) I can check a bmw tomorrow if you like. Edited March 31, 2020 by tioga Quote Link to comment Share on other sites More sharing options...
DuffyMahoney Posted March 31, 2020 Author Share Posted March 31, 2020 6 minutes ago, tioga said: I can check a bmw tomorrow if you like. Well I wanted it flawless. So it takes a while. my system uses the exact pumps and nozzles as the top system on the market. Quote Link to comment Share on other sites More sharing options...
tioga Posted March 31, 2020 Share Posted March 31, 2020 I don’t understand this comment Quote Link to comment Share on other sites More sharing options...
DuffyMahoney Posted March 31, 2020 Author Share Posted March 31, 2020 44 minutes ago, tioga said: I don’t understand this comment My comment wasn't directed at you. Quote Link to comment Share on other sites More sharing options...
DuffyMahoney Posted March 31, 2020 Author Share Posted March 31, 2020 PCV question. This isn’t a debate about the need for a PCV vs a catch can. I want true postive vent. I decided I want to use my exhaust to pull the fumes out, to keep the dirty fumes out of my intake. But since I have Fujitsubo. I have true dual exhaust. Is plumbing to one good enough? Should I still use the stock check valve? I would guess it holds back a tiny bit of pressure before popping open? My plan was to weld this bung at a 45 just past my o2 bungs on my exhaust. With the stock check valve in line. Quote Link to comment Share on other sites More sharing options...
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