45 dcoe help!

djjjr42 · 04-23-2008, 04:24 PM

I'm glad you see a difference. It goes to show what a small change can do. As far as changing the venturis, it's actually not that bad. Just loosen the 4 screws underneath (a pair for each barrel) that are connected with a little metal strap for each pair. Then reach in and pull out the aux venturies, and then the main venturis are behind them. Make sure when you replace them that you've got the little dimples lined up with the holes. After you get those screws out and pull the aux venturis you will see what I'm talking about. Also be careful when putting them back in, if you over tighten the screws you can crack off a piece of the barrel body. Don't ask me how I know! I also suggest using a bit of teflon tape on the threads when you put them back in, and keep the metal straps that link each pair, on. Keep in mind that when you change the venturis, whatever jet combo you're currently running will not be optimal. So you may want to hold off until you can get a wideband. Or, you can do a lot of trial and error with different combos, and keep a log of your findings.
Regarding the plugs, you can't really get an accurate reading if you drove it hard and THEN came home and checked them. You'd actually have to pull off on the side of the road after running it hard to read them. Like I said that method is pretty impractical and a PITA.
I was supposed to tell you what jets I have, but I got sidetracked with another FB that came into my collection last Friday. The Sterling is going in that one!

I'm pretty sure my biggest airs are 205 and the biggest mains are 195. I think I have an assorted range of about 50 below each. And the DCOE is on a stockport 12A in an 83 GS with 45k original miles on it.

04-23-2008, 04:24 PM	#14
djjjr42 Rotary Fan in Training Join Date: Feb 2008 Location: Bishopville, SC Posts: 32 Rep Power: 0	I'm glad you see a difference. It goes to show what a small change can do. As far as changing the venturis, it's actually not that bad. Just loosen the 4 screws underneath (a pair for each barrel) that are connected with a little metal strap for each pair. Then reach in and pull out the aux venturies, and then the main venturis are behind them. Make sure when you replace them that you've got the little dimples lined up with the holes. After you get those screws out and pull the aux venturis you will see what I'm talking about. Also be careful when putting them back in, if you over tighten the screws you can crack off a piece of the barrel body. Don't ask me how I know! I also suggest using a bit of teflon tape on the threads when you put them back in, and keep the metal straps that link each pair, on. Keep in mind that when you change the venturis, whatever jet combo you're currently running will not be optimal. So you may want to hold off until you can get a wideband. Or, you can do a lot of trial and error with different combos, and keep a log of your findings. Regarding the plugs, you can't really get an accurate reading if you drove it hard and THEN came home and checked them. You'd actually have to pull off on the side of the road after running it hard to read them. Like I said that method is pretty impractical and a PITA. I was supposed to tell you what jets I have, but I got sidetracked with another FB that came into my collection last Friday. The Sterling is going in that one! I'm pretty sure my biggest airs are 205 and the biggest mains are 195. I think I have an assorted range of about 50 below each. And the DCOE is on a stockport 12A in an 83 GS with 45k original miles on it. Last edited by djjjr42; 04-23-2008 at 04:26 PM.