Adjusting boost??
11-22-2004, 03:07 PM
#1
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Adjusting boost??
Can anyone tell me what direction the bar that screws onto the wastegate should be adjusted if I am not getting enough boost. I have the Banks Six-Gun, Big Head Wastegate and the BD Power Pup and run LP as well. Max boost is 30lbs. A number of guys are getting much more boost than that and I am now wondering if I have everything setup properly. It seems to still be low on EGTs and boost. Once the wastegate was installed I turned it in six turns after it made contact with the pin. Shoud it be six turns out or in. I am thinking I went the wrong way. Thanks.
11-22-2004, 03:48 PM
#2
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If you're talking about the rod that runs from the wastegate acuator (Big Head in your setup) to the flapper on the turbine housing then it needs to be shorter for more boost. Don't go too short or you'll get coil bind in the actuator and the wastegate won't open all the way. The other option is to get an adjustable boost elbow. You can then adjust it with the turn of an allen screw.
John
John
11-22-2004, 04:14 PM
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I hate it when you type something up and before you can hit the submit button someone else beats you to it. 
Yeah, what he said. The correct bar length will ensure the wastegate has full travel available when opening and closing. This ensures drive pressures & boost stays in check when spikes occur. I think you may do better as well sticking in a boost elbow with a bleed port on the side like the TST elbow. It will raise boost, but still allow your wastegate to fully open when spikes are encountered for protection. The TST elbow should be good for 5 to 7 pounds of boost as it comes set. If that is not enough, get after it with a small drill bit and enlarge the bleed port just a smidge at a time until you land at your predetermined sweet spot.
Yeah, what he said. The correct bar length will ensure the wastegate has full travel available when opening and closing. This ensures drive pressures & boost stays in check when spikes occur. I think you may do better as well sticking in a boost elbow with a bleed port on the side like the TST elbow. It will raise boost, but still allow your wastegate to fully open when spikes are encountered for protection. The TST elbow should be good for 5 to 7 pounds of boost as it comes set. If that is not enough, get after it with a small drill bit and enlarge the bleed port just a smidge at a time until you land at your predetermined sweet spot.
11-23-2004, 05:36 PM
#5
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Just some thing to think about. On the 305 motor de-fueling and over-boost codes happen at around 29 PSI. Unless you have a boost fooler you might have some small problems trying to get 30+ PSI. Never mind the six-gun does boost fooling. Sorry should have read sig. better
12-26-2004, 10:51 AM
#6
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I still have doubts that my turbo/wastegate is setup properly. I am not getting high temps at all, most I can muster is 1100 MAX with everything maxed out. That tells me I am not getting the fuel which from what little I understand about the programming is related to the fuel curve and determined mostly by the boost? Is this correct? Some of the guys here are talking about breaking their tires loose and smoking, my truck does neither. The most I can get out of the truck is 32psi, only for a moment. It seems to me like something is setup wrong. Can anyone recommend a shop in the Central NC area that can do some troubleshooting and tuning to find out why it is so lame with all of the upgrades I have done?
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