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adjusting waste gate
Posted: Mon Jan 07, 2008 10:54 pm
by dirtyhandssubaru555
im not sure if i have the was gate adjusted right. what would be the correct way to adjust it? it should be open at an idle right?
Posted: Tue Jan 08, 2008 12:30 am
by Arctic Assassian
I think it's closed at idle... because the actuator doesn't run off vacuum, its is opened by pressure, and at idle there is lots of vacuum.
Posted: Tue Jan 08, 2008 2:11 am
by Legacy777
Yeah....it shouldn't be open at idle. And you really shouldn't have to adjust anything. Maybe put a little bit of tension to make sure it's closed
Posted: Tue Jan 08, 2008 4:15 am
by dirtyhandssubaru555
ok i got things right. i have some tension on the actuator, but im not sure how much would be good, what would happen if i had to much? besides that fact that it wouldn't open. higher boost? damage?
Posted: Tue Jan 08, 2008 4:47 am
by vrg3
Get a little hand pump and see how much pressure it takes to open. If you get it up to your target boost and the wastegate hasn't even moved yet, you'll overboost.
If it doesn't open, you'll overboost, and all kinds of damage associated with overboost can happen. If you haven't messed with the ECU's control, it should cut fuel if you overboost above about 13 psi for more than about 3 seconds, so that would be a last-resort failsafe.
Posted: Wed Jan 09, 2008 7:16 am
by mgroshong
can i use a bike tire pump running to the wastegate? then have a boost guage tee'd off the hose to the wastegate to test if my wastegate is sticing shut?
Posted: Wed Jan 09, 2008 9:55 am
by vrg3
Yes, if you can work the plumbing out.
I've never heard of a wastegate sticking.
You could check if it's stuck shut by unbolting the rod and trying to open the flapper; it should open easily. Or just push the rod by hand; it'll take a lot of effort but you should be able to get it to move.
Posted: Thu Jan 10, 2008 6:34 am
by mgroshong
well i hit fuel cut while part throttle driving the other day out of no where.... and i'm still having problems with it creeping up on me
Posted: Fri Feb 22, 2008 6:39 am
by sublunacy
sorry to hijack
i want to add ive had many usuall legacy problems
and im getting them sorted anyway my wastegate deffinately
WAS stuck shut untill 2 weeks ago.... but cause my turbo is done
for it doesn't get use much I guess, anyway I got REAL frustrated
cause liquid wrench did nothing when i torqued it so i torqued ti harder and it came loose, now its smooth opperator
Turbo still sucks thou