STS turbo need help making boost
On The Tree
Joined: Dec 2004
Posts: 187
Likes: 1
well something went way wrong on my way home today went to do a pull on the highway to see how the turbo was spoolin and in 4th and 5th gear boost came on strong solid 10psi 11.5afr throughout at end of pull heard a slight backfire when I let off buddy of mine said I was smoking slightly pulled over and SES light was blinking and engine was Idleing weird feels like it is missfireing maybe fouled a plug or O2 sensor Im getting code p1133 which is a o2 low switching code....and on top of all I got alot of smoke coming out of my catch can breather and out of the dipstick tube Im afraid I hurt the motor? or what else could be wrong?
I really wish that you had more contact with the members on this board before you went out boosting.... Practically everything you did to decrease the spool time and up the pressure was terribly wrong. Make sure that when you get everything back together that you follow sound advice first. Last edited by 3800SII; Jul 22, 2011 at 03:21 PM.
yup well you live and you learn right? did compression test and #7 piston compression was non existent gauge didn't even move so safe to say motor is toast had 89xxx miles guess it was going to happen. So now to build it the right way going to use stock manifolds and fab exhaust as far as engine I'm seeing what my options are I'm pressed for time and budget basically I'm at a high performance automotive school in Texas and I can do all my work there but only have 4 weeks left before I go back home. So thinking about a used LQ4/9 longblock and put springs and turbo cam, would I be able to re use my intake and injectors with that motor? and what else would I need for the swap
Decided I'm going to either swap a 6.0 LQ4 longblock with springs and cam or rebuild my LS1 with forged rods and pistons with 317 heads trying to decide what would be a good turbo cam for my setup and also possibly upgrading my turbo but not sure what to go with I want 550-600 rwhp at 10-12 psi
10 Second Club
Joined: Dec 2008
Posts: 330
Likes: 1
yup well you live and you learn right? did compression test and #7 piston compression was non existent gauge didn't even move so safe to say motor is toast had 89xxx miles guess it was going to happen. So now to build it the right way going to use stock manifolds and fab exhaust as far as engine I'm seeing what my options are I'm pressed for time and budget basically I'm at a high performance automotive school in Texas and I can do all my work there but only have 4 weeks left before I go back home. So thinking about a used LQ4/9 longblock and put springs and turbo cam, would I be able to re use my intake and injectors with that motor? and what else would I need for the swap
You could put 20k in the new engine an it will still blow the same way the last did, your stock motor blowing had more to do with, tune and driver. How fast were you going when you decided to boost in 4th and 5th?
I was maybe doing 55-60 the whole pass I watched the AFR and never went lean stayed at 10.5-11...Im changing a few things this time around to help with the boost problems I was having, adding manual boost controller and referencing it all from the intake not the turbo housing also using stock manifolds and 2.5inch Y pipe all wrapped and also adding a MSD fuel pump booster to help out my racetronix 255 at WOT and for the time running 8-9psi with the T60
10 Second Club
Joined: Dec 2008
Posts: 330
Likes: 1
I was maybe doing 55-60 the whole pass I watched the AFR and never went lean stayed at 10.5-11...Im changing a few things this time around to help with the boost problems I was having, adding manual boost controller and referencing it all from the intake not the turbo housing also using stock manifolds and 2.5inch Y pipe all wrapped and also adding a MSD fuel pump booster to help out my racetronix 255 at WOT and for the time running 8-9psi with the T60
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Verdad Gallardo I know I data logged all my dyno runs everything seemed to be going well...I kno I need a new turbo but I gotta get my engine fixed first thats why Im going to run at only 8psi for now untill I can upgrade my turbo
if you nuked the ringland on #7, which odds are you probably did, theres a good chance the debris went through your exhaust and may have killed your turbine wheel on the turbo. Take the turbine housing off and check your turbine wheel.
I hope not didnt hear anything like that turbo seems to be spining fine but will take a look at it tomorrow tho, I just need this turbo to last me a little while untill I can upgrade kinda sinking all my money into getting an engine and my car running again
Turbo is just fine started taking off the exhaust and the turbo checked it all out everything seems fine nothing got damaged, however I am going to upgrade to a bigger turbo to help support the new 6.0 engine going in it don't want risk it
ew, that sucked, hows the car these days? im doing a build myself but im starting with a T76. im starting with the reference in the compressor hosing to get everything started. i might do the long stretch tot he manifold later but for now this is where im referencing mine. i have the option though since i jus got a vacuum manifold with an extra port if needs be. im also having a custom cam speced out for me to help spool a bit, still using my stock bottom ls1 but will run 317 heads to drop the CR to about 9.8 with .040 gaskets
so hey, what did you do exactly to get 10psi on your setup? im running a T76 on my stock ls1 as well. after i fix my leaks id like to aviod hunting spings down and referencing points.
