Blonk Iconoclast Donating Members 4,330 Member For: 20y 2m 3d Gender: Male Location: CH Posted 21/08/07 08:14 AM Share Posted 21/08/07 08:14 AM Great explainations here, but put me down for a simple,The wastegate was a failsafe on the motor vote............ Link to comment Share on other sites More sharing options...
Josh636 Member 65 Member For: 17y 1m 26d Gender: Male Location: Mount Isa Posted 29/03/08 04:53 AM Share Posted 29/03/08 04:53 AM Im having trouble with over boost. running rapid cooler and 4inch dump, with the vac line straight onto the wastegate actuator it holds at about 5psi then when revs get up around 3-3500 just spikes to crazy high. Would it be something todo with the wastegate not being able to flow enough gas to keep boost low at high rpm? was on the dyno with the solenoid hooked up and it was boosting up late then goin upto 15psi and they couldnt control it. I pulled the turbo off and found the wastegate was opening and closing fine, tested with a pump and it held didnt leak. Link to comment Share on other sites More sharing options...
senna_T Forged Member Lifetime Members 15,818 Member For: 17y 9m 22d Gender: Male Location: SW Sydney Posted 29/03/08 05:15 AM Share Posted 29/03/08 05:15 AM I'm guessing it would be different under load, have you got a custom tune? Link to comment Share on other sites More sharing options...
Josh636 Member 65 Member For: 17y 1m 26d Gender: Male Location: Mount Isa Posted 29/03/08 05:44 AM Share Posted 29/03/08 05:44 AM I'm guessing it would be different under load, have you got a custom tune?it was on the dyno yesterday gettin a custom tune but they couldnt get it to hold any boost. boost came on really late then would spike upto 15psi. then they would shut it off. they said it might be the arm fallen off so I pulled the turb off last nite and it was fine. it holds 5psi to about 3500rpm then just goes crazy. thinking maybe wastegate needs to be ported.... Link to comment Share on other sites More sharing options...
Panda Eyes flame magnet Gold Donating Members 5,674 Member For: 16y 6m 13d Gender: Male Location: adelaide hills- 'race air' central Posted 06/01/09 12:02 PM Share Posted 06/01/09 12:02 PM theres a lot of mumbo jumbo on this thread for us guys that are not familiar with the nitty gritty. eg duty cycle .5 , .55 etc.so for the uneducated in custom tuning, what was the simple answer?as many, including myself go the familiar route of intake mods, flash, tune, cooler, injectors, valve springs, fuel pump- is a stronger, say, 12psi actuator a good mod to do, or a waste of money?I'm chasing anything over 300rwkw. will more power be able to be tuned in with one?once again, just for the not-so-educated in intricate tuning proceedures.... Link to comment Share on other sites More sharing options...
Jmpin Member 111 Member For: 17y 2m Gender: Male Location: South Coast NSW Posted 10/01/09 06:45 AM Share Posted 10/01/09 06:45 AM I have found that 16 psi was the maximum I could achieve on the stndard actuator so I upgraded to a 15 psi actuator could run upto 25 psi or so with that one at maximum bleedinteresting... my actuator seems to be failing at a crappy 9psi... the car just bleed boost... the tuner said I would only need a 10psi actuator (as an upgrade) and it would be good for 15-16psi not that I want to run much more than say 12psi... Link to comment Share on other sites More sharing options...
Jmpin Member 111 Member For: 17y 2m Gender: Male Location: South Coast NSW Posted 10/01/09 07:00 AM Share Posted 10/01/09 07:00 AM I cant agree with alot of the comments being made..... I have wog cooler, injectors, heavy duty valve springs, custom tune that has boost serge from 5-10psi! if I dont replace the acuator I cant drive the car on boost cause its a dog.... so not always a cat and dump are first on the list, but hey will be next......... Agreed, rap1d. Forget the actuator; go for a cat and dump, injectors, in tank Walbro pump and limit your self to 14 - 12 psi with safe AFRs (from a good custom tuner) and your wish for 300 will be m o r e than upon you. SAFELY. Link to comment Share on other sites More sharing options...
rhys Member 53 Member For: 15y 11m 9d Gender: Male Location: 2101 Posted 24/01/09 06:24 AM Share Posted 24/01/09 06:24 AM so it depends from car to car whether you need to upgrade it and also on what is done when its tuned. so for someone wanting to make bit over 300kw a 10psi actuator would be a good precaution since its cheap to do?who sells a 10psi actuator and approx how much is it? Link to comment Share on other sites More sharing options...
trevs Member 781 Member For: 17y 7m 9d Gender: Male Location: balmain Posted 24/01/09 08:14 PM Share Posted 24/01/09 08:14 PM so it depends from car to car whether you need to upgrade it and also on what is done when its tuned. so for someone wanting to make bit over 300kw a 10psi actuator would be a good precaution since its cheap to do?who sells a 10psi actuator and approx how much is it? can we do a group buy on these maybe Link to comment Share on other sites More sharing options...
PSIFRK Member 312 Member For: 17y 10m 21d Gender: Male Location: Brisbane Posted 25/02/09 01:56 PM Share Posted 25/02/09 01:56 PM how much would a 10-12pound actuator cost? and also what would someone charge to port the turbo and have the actuator fitted? Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now