ahhh i know the problem....
need to add more boost.... i think i run about 86psi on my turbo.....
:p lol
Hey guys i am just wanting to know if this is a big turbo for 4agte. Ive got my t28 turbo hiflow to this and it seems to be very lagging ..I am leaning towards actuator is faulty but i am getting full boost at 6000rpm in 1st 5200rpm in 2nd/3rd so its seems weird when the suppiler rekons i should be full spooling by 4000rpm
Ive check for leaks and removed my MBC but its still not boosting properly.. I am using a stock 7psi t28 actuator that i put on with not knowing the condition before hand. It opens fine but might be opening under boost pressure to easy ? causing it to lag all the way to high boost
SO any info is appreciated
Comp wheel:
T3 super flow wheel
48.3 inducer, 60mm exducer, 12 fins 6long 6 short Trim 65
Turbine:
65mm TB34 11 fin turbine wheel,
Internals:
T04E 360 degree thrust bearing
Last edited by reecegze; 9th March 2009 at 10:37 PM.
ahhh i know the problem....
need to add more boost.... i think i run about 86psi on my turbo.....
:p lol
Hey mate
How much boost does it get at 6000 rpm?
What size is the A/R exhaust housing?
Should be cast on the outside or stamped on the inside.
To check wastgate diaphram, suck on the hose to it
then block it with your tongue and check if it holds vacuum.
If it holds vacuum then adjust the actuator thread so it's
a bit shorter then test drive. If it gets more boost sooner
keep winding till it reaches your max boost level.
See how you go
hey mate thanks for your quick reply.. I am only boosting 10psi.. its a .64 housing but hiflow obviously.. What do you mean by that.. stick a hose onto it and block the hose to see if the actuator has a vaccum ? Also this actuator is none adjustable via thread. Should i upgrade to a 14psi actuator ?
Fit a vacuum hose on the actuator long enough
for you put it in your mouth, then suck on it to
create some vacuum then block it with your tongue
for about a minute. If it pulls vacuum and holds
it you will know when your tongue gets sucked into the hose.
If the actuator is faulty it won't suck your tongue into the hose.
You have to check the actuator first before you go out and buy a new one
to pinpoint the problem. It could be that the actuator has got enough tension
on the wastegate flap, is it hard or easy to open the wastegate flap?
you need to add pressure via the vacuum line, usually by using something like a cooling system pressure tester.
This way, you can see what the actuator is doing under boost, what happens under vacuum is irrelevant, unless it is a dual diaphragm actuator
its seems pretty stiff when using hands on the rod to pull it open ill try this tomz thanks mate .. Stressing![]()
ill nitro test it tomorrow using gauge lines.. I am hoping that its f$cked or i am f@cked for having such a laggy turbo.. Anyone got some insite on the specs of the turbo ???
test the actuator, all your cooler pipes, anything boost related, do a comp test, if all is ok with that then take your turbo back to the dude that did it, and tell him it doesn't work.
As for size, i can't comment. I don't know whats done to it.
better yet, get a good tune, that might wake it up.